6 inch mud pump free sample

Explore a wide variety of 6 inch mud pump on Alibaba.com and enjoy exquisite deals. The machines help maintain drilling mud circulation throughout the project. There are many models and brands available, each with outstanding value. These 6 inch mud pump are efficient, durable, and completely waterproof. They are designed to lift water and mud with efficiency without using much energy or taking a lot of space.

The primary advantage of these 6 inch mud pump is that they can raise water from greater depths. With the fast-changing technology, purchase machines that come with the best technology for optimum results. They should be well adapted to the overall configuration of the installation to perform various operations. Hence, quality products are needed for more efficiency and enjoyment of the machines" full life expectancy.

Alibaba.com offers a wide selection of products with innovative features. The products are designed for a wide range of flow rates that differ by brand. They provide cost-effective options catering to different consumer needs. When choosing the right 6 inch mud pump for the drilling project, consider factors such as size, shape, and machine cost. More powerful tools are needed when dealing with large projects such as agriculture or irrigation.

Alibaba.com provides a wide range of 6 inch mud pump to suit different tastes and budgets. The site has a large assortment of products from major suppliers on the market. The products are made of durable materials to avoid corrosion and premature wear during operations. The range of products and brands on the site assures quality and good value for money.

The DAE Pumps Submersible Slurry Pumps are designed for an extensive range of applications. With their robust designs, submersible slurry pumps move slurry, sand, and other material with ease. Heavy-duty submersible slurry pumps from DAE Pumps are capable of pumping solids up to2112 GPM with as much as 102 HP. DAE Pumps submersible slurry pumps are available in a wide range of models in 3-inch, 4-inch, 6-inch, and 8-inch sizes.

Our non-clogging submersible slurry pumps are the toughest in the industry and have the largest apertures to facilitate the handling of slurry with the most challenging solids. The high-efficiency high chrome agitator lifts up to 2.5-inch settled solids. The robust design uses heavy-duty bearings to withstand shocks and overloads and a double silicon carbide mechanical seal for duty application.

DAE Pumps robust submersible slurry pumps are made to perform. The unique sealing system and modular design make them the most flexible pumps on the market. Easy to use and maintain, these pumps provide the optimum maintenance solution and can be easily fitted at the job site. These heavy-duty submersible slurry pumps offer a motor protection system with a built-in starter and optional automatic level control. The hardened high-chrome impellers and adjustable wear-resistant rubber diffuser feature ensure durability in the toughest environments.

At DAE Pumps, we have a complete range of high-quality submersible slurry pumps made for dewatering and dredging the most abrasive media, like sand, with high solid content in quarries and mining operations. The user-friendly design and easy-to-use submersible sand and slurry pumps are why they are the preferred choice for submersible pumps.

Submersible slurry pumps and submersible sand pumps offer the highest in quality and strength over other submersible pumps. They are capable of moving large amounts of sand and slurry with ease and without clogging. DAE Pumps submersible sand and slurry pumps withstand the abrasive material that passes through them on a consistent basis and provide the power to move the material. The following is to help understand pump specifications for selecting the right submersible slurry pump or sand pump for you. A DAE Pumps representative is also available.

The size of the submersible pump is important when connecting the discharge end. The hose or pipe that connects to the pump should match the discharge or the pump. If fitting an adjustment to the end of the submersible slurry pump, the fitting can only work when goes downward in size, not upward. Typically, the pump size limits the gallons per minute a submersible slurry pump is capable of pumping. The larger the pump size, the more allowable volume, and solids sizes.

The power of the electrical submersible slurry pump is determined by the motor size in horsepower. The more horsepower, the more material it can move (volume), and the higher the head of which it can pump. When moving sand and slurry, it is important to take horsepower into consideration. As sand and slurries can be heavy, this causes friction that slows down the movement of the material. If there is too much friction and the submersible sand pump is not powerful enough to push the sand or slurry, the material will start to settle in the hose or piping, and not deliver to the final destination.

When selecting a submersible slurry or sand pump be sure to understand the volume of the material you are looking to move. Submersible pump specifications are typically based on pumping water. When pumping sand, slurry, and other solids, DAE Pumps industrial slurry pumps move between 15% to 30% solids.  Therefore, the remaining 70% to 85% is water.  While a 100 GPM sand pump can process about 15% material, thus 15 GPM of sand, a 100 GPM slurry pump can process about 30% material, thus 30 GPM of slurry. This all varies depending on how aggressive the operator is with the pump. Ensuring the correct power of a sand pump is essential for delivering sand the distance needed because sand is heavy and settles. Not enough power will leave sand in the hose and backup. Knowing the liquid viscosity is important for ensuring proper pumping. Ask DAE Pumps for assistance with a viscosity test to ensure accurate pump selection.

In addition to the amount of material you pump, you want to make sure there is a consistent inflow of water or fluid replacing liquid and material that is being pumped out for the proper operation. Lack of fluid is never good for submersible pumps.

Here are a couple of equations and examples to help figure out how much material a submersible slurry pump can move and approximately how long it will take to move your material.

The head is the height at which the pump can raise water. The weight of a gallon of water at room temperature is 8.33 lbs. If all that is being pumped is room temperature water, the height a submersible slurry pump could pump that water is the max head stated on the pump specifications. However, submersible slurry pumps and submersible sand pumps are pumping more than just room-temperature water. They are pumping sand, silt, rocks, mud, debris, and other types of slurries. These slurries have a different weight that is more than the weight of water. Thus, the head of a pump that is pumping slurries and sand is going to be less than the stated head on a pump.

The size of solids is that can pass through a submersible slurry pump are typically determined by the allowable area between the pump’s impeller and the volute. Submersible pumps are designed with more or less separation for the type of material they are intended to handle. Those with more separation are submersible slurry pumps because they can process larger materials. The submersible pump with less separation is a drainage pump that does not move many solids.

Your dewatering needs are our top priority. Our electrical submersible pumps support all your dewatering application needs for drainage, slurry, and sludge. Visit our dewatering applications section to learn more about various types of dewatering needs.

The non-clogging Miramar Submersible Slurry Pumps are the toughest and have the largest apertures to facilitate the handling of slurry with the most challenging solids. The high-efficiency high chrome agitator lifts settled solids up to 2.5-inches. The robust design uses heavy-duty bearings to withstand shocks and overloads and a double silicon carbide mechanical seal for duty application. The Miramar Slurry Pumps offer 3-inch, 4-inch, and 6-inch models, with the ability to move up to 2112 GPM.

DAE Pumps Miramar L430 Submersible Slurry Pumps are built to move abrasive materials with solids up to 0.8-inches. With a 3-inch discharge, these slurry pumps process material at 247 GPM up to 47-feet via a 5 HP motor.  This 60Hz pump is available in 460V.

The low-cost DAE Pumps Tampa 337 provides ideal suction and movement of solids up to 1-inch through a 3-inch discharge. The ergonomic Tampa 337 submersible slurry pumps transfer solids and liquids at a flow rate of up to 343 GPM and with 5 HP.  Read More…

DAE Pumps Tampa 355 provides reliable suction and movement of solids up to 1-inch through a 3-inch discharge. The ergonomic Tampa 355 submersible slurry pumps transfer solids and liquids at a flow rate of up to 449 GPM and with 5 HP.  Read More…

The durable and efficient DAE Pumps Tampa 437 provides improved suction and movement of solids up to 1-inch through a 4-inch discharge. The ergonomic Tampa 437 submersible slurry pumps transfer solids and liquids at a flow rate of up to 476 GPM and with 5 HP.   Read More…

The durable and efficient DAE Pumps Tampa 437 provides improved suction and movement of solids up to 1-inch through a 4-inch discharge. The ergonomic Tampa 437 submersible slurry pumps transfer solids and liquids at a flow rate of up to 476 GPM and with 5 HP.   Read More…

3The Lansing 340 submersible slurry pump is solid and easy to move slurry, water, or any other material. DAE Pumps’ heavy-duty, submersible slurry pumps can handle up to 2112 GPM solids. They also have a maximum power output of 102 horsepower. DAE Pumps Submersible Drainage Pumps are available in many sizes, including3-inch,4-inch,6-inch, and8-inch.

The Lansing 340 submersible slurry pump has a 4kW or 5.5HP, and it is non-clogging and can handle the most challenging solids. The high-efficiency, high chrome agitator, is capable of lifting 2.5-inch solids. For duty use, the sturdy design incorporates heavy-duty bearings for shocks and overloads.

The rugged DAE Pumps Miramar L540 Submersible Slurry Pumps process abrasive materials with solids up to 1-inch. These durable slurry pumps with 4-inch discharge move material at 308 GPM up to 57-feet via a 7 HP motor.  This 60Hz pump is available in 460V.

DAE Pumps Tampa 455 provides greater suction and movement of solids up to 1-inch through a 4-inch discharge. The ergonomic Tampa 455 submersible slurry pumps transfer solids and liquids at a flow rate of up to 594 GPM and with 7.5 HP.  Read More…

4The Lansing 460 submersible slurry pump is solid and easy to move slurry, water, or any other material. DAE Pumps’ heavy-duty, submersible slurry pumps can handle up to 2112 GPM solids. They also have a maximum power output of 102 horsepower. DAE Pumps Submersible Drainage Pumps are available in many sizes, including3-inch,4-inch,6-inch, and8-inch.

The Lansing 60 submersible slurry pump has a 6kW or 8HP, and it is non-clogging and can handle the most challenging solids. The high-efficiency, high chrome agitator, is capable of lifting 2.5-inch solids. For duty use, the sturdy design incorporates heavy-duty bearings for shocks and overloads.

The reliable DAE Pumps Tampa 475 provides increased suction and movement of solids up to 1-inch through a 4-inch discharge. The ergonomic Tampa 475 submersible slurry pumps transfer solids and liquids at a flow rate of up to 655 GPM and with 10 HP.   Read More…

Offering the same high-quality, the DAE Pumps Miramar L640 Submersible Slurry Pumps move abrasive materials with solids up to 1-inch. With a 4-inch discharge, these heavy-duty slurry pumps process material at 440 GPM up to 75-feet via a 12 HP motor.  This 60Hz pump is available in 460V.

The Miramar L640 is made of aluminum alloy for high corrosion resistance and the high-chrome (55HRC) impellers provide great wear resistance. The wide base is designed for stability while standing in thick material.

The heavy-duty DAE Pumps Miramar L740 Submersible Slurry Pumps transfer abrasive materials with solids up to 1-inch. With a 4-inch discharge, the Miramar L740 slurry pumps move material at 616 GPM up to 85-feet via a 15 HP motor.  This 60Hz pump is available in 460V.

The efficient DAE Pumps Tampa 4110 provides enhanced suction and movement of solids up to 1-inch through a 4-inch discharge. The ergonomic Tampa 4110 submersible slurry pumps transfer solids and liquids at a flow rate of up to 819 GPM and with 15 HP.   Read More…

DAE Pumps Miramar L840 Submersible Slurry Pumps move abrasive materials with solids up to 1-inch. With a 4-inch discharge, these reliable slurry pumps process material at 660 GPM up to 98-feet via a 20 HP motor.  This 60Hz pump is available in 460V.

DAE Pumps Galveston 3304 pumps with a combined strainer with a partially open stand and agitator allows for ideal suction and movement of solids up to 1.5-inches with a 4-inch discharge. The Galveston 3304 submersible slurry pumps transfer solids and liquids at a flow rate of up to 792 GPM and with 30 HP.  Read More…

The high power 4-inch DAE Pumps Miramar L940 Submersible Slurry Pumps move abrasive materials with solids up to 1.5-inches. These 4-inch discharge submersible slurry pumps move liquids and solids at 880 GPM up to 171-feet via a 50 HP motor.  This 60Hz pump is available in 460V.

The DAE Pumps Tampa 6110 provides high suction and movement of solids up to 1.4-inches through a 6-inch discharge. The ergonomic Tampa 6110 submersible slurry pumps transfer solids and liquids at a flow rate of up to 977 GPM and with 15 HP.  Read More…

The Lansing 690 submersible slurry pump is solid and easy to move slurry, water, or any other material. DAE Pumps’ heavy-duty, submersible slurry pumps can handle up to 2112 GPM solids. They also have a maximum power output of 102 horsepower. DAE Pumps Submersible Drainage Pumps are available in many sizes, including3-inch,4-inch,6-inch, and8-inch.

The Lansing 690 submersible slurry pump has a 9kW or 12HP, and it is non-clogging and can handle the most challenging solids. The high-efficiency, high chrome agitator, is capable of lifting 2.5-inch solids. For duty use, the sturdy design incorporates heavy-duty bearings for shocks and overloads.

DAE Pumps Tampa 6150 provides enhanced suction and movement of solids up to 1.4-inches through a 6-inch discharge. The ergonomic Tampa 6150 submersible slurry pumps transfer solids and liquids at a flow rate of up to 1136 GPM and with 20 HP.  Read More…

The highly efficient DAE Pumps Tampa 6150-L provides even greater suction and movement of solids up to 1.4-inches through a 6-inch discharge. The ergonomic Tampa 6150-L submersible slurry pumps transfer solids and liquids at a flow rate of up to 1453 GPM and with 20 HP.  Read More…

DAE Pumps Tampa 6220 provides ideal suction and movement of solids up to 1.2-inches through a 6-inch discharge. The ergonomic Tampa 6220 submersible slurry pumps transfer solids and liquids at a flow rate of up to 1268 GPM and with 30 HP.  Read More…

DAE Pumps Galveston 3306 pumps with a combined strainer with a partially open stand and agitator allows for ideal suction and movement of solids up to 2.5-inches with a 6-inch discharge. The Galveston 3306 submersible slurry pumps transfer solids and liquids at a flow rate of up to 1848 GPM and with 30 HP.   Read More…

DAE Pumps Galveston 3506 pumps with a combined strainer with a partially open stand and agitator allows for ideal suction and movement of solids up to 1.5-inches with a 6-inch discharge. The Galveston 3506 submersible slurry pumps transfer solids and liquids at a flow rate of up to 2112 GPM and with 50 HP.   Read More…

DAE Pumps Galveston 3506-H pumps with a combined strainer with a partially open stand and agitator allows for ideal suction and movement of solids up to 1.5-inches with a 6-inch discharge. The Galveston 3506-H submersible slurry pumps transfer solids and liquids at a flow rate of up to 1848 GPM and with 50 HP.   Read More…

DAE Pumps Miramar L1060 Submersible Slurry Pumps are built to move abrasive materials with solids up to 2.5-inches. With a 6-inch discharge, these slurry pumps process material at 1320 GPM up to 108-feet via a 60 HP motor.  This 60Hz pump is available in 460V.

The Miramar L1060 is made of aluminum alloy for high corrosion resistance and the high-chrome (55HRC) impellers provide great wear resistance. The wide base is designed for stability while standing in thick material.

DAE Pumps Galveston 3756 pumps with a combined strainer with a partially open stand and agitator allows for ideal suction and movement of solids up to 1.5-inches with a 6-inch discharge. The Galveston 3756 submersible slurry pumps transfer solids and liquids at a flow rate of up to 2112 GPM and with 75 HP.  Read More…

DAE Pumps Miramar L1160 Submersible Slurry Pumps offer the ultimate performance in slurry pumping. This top-of-the-line pump easily handles the most abrasive materials with solids up to 2.5-inches. This heavy-duty slurry pump with a 6-inch discharge transfers material at 2112 GPM up to 174-feet via a 101 HP motor.  This 60Hz pump is available in 460V.

The Miramar L1160 is made of aluminum alloy for high corrosion resistance and the high-chrome (55HRC) impellers provide great wear resistance. The wide base is designed for stability while standing in thick material.

The Lansing 8150 submersible slurry pump is solid and easy to move slurry, water, or any other material. DAE Pumps’ heavy-duty, submersible slurry pumps can handle up to 2112 GPM solids. They also have a maximum power output of 102 horsepower. DAE Pumps Submersible Drainage Pumps are available in many sizes, including3-inch,4-inch,6-inch, and8-inch.

The Lansing 8150 submersible slurry pump has a 15kW or 20HP, and it is non-clogging and can handle the most challenging solids. The high-efficiency, high chrome agitator, is capable of lifting 2.5-inch solids. For duty use, the sturdy design incorporates heavy-duty bearings for shocks and overloads.

The reliable DAE Pumps Tampa 8220 provides the highest suction and movement of solids up to 1.4-inches through an 8-inch discharge. The ergonomic Tampa 8220 submersible slurry pumps transfer solids and liquids at a flow rate of up to 1664 GPM and with 30 HP.  Read More…

DAE Pumps Galveston 3508 pumps with a combined strainer with a partially open stand and agitator allows for ideal suction and movement of solids up to 2.5-inches with an 8-inch discharge. The Galveston 3508 submersible slurry pumps transfer solids and liquids at a flow rate of up to 2112 GPM and with 50 HP.   Read More…

DAE Pumps Galveston 3758 pumps with a combined strainer with a partially open stand and agitator allows for ideal suction and movement of solids up to 2.5-inches with an 8-inch discharge. The Galveston 3758 submersible slurry pumps transfer solids and liquids at a flow rate of up to 2112 GPM and with 75 HP.  Read More…

The Lansing 8220 submersible slurry pump is solid and easy to move slurry, water, or any other material. DAE Pumps’ heavy-duty, submersible slurry pumps can handle up to 2112 GPM solids. They also have a maximum power output of 102 horsepower. DAE Pumps Submersible Drainage Pumps are available in many sizes, including3-inch,4-inch,6-inch, and8-inch.

The Lansing 8220 submersible slurry pump has a 22kW or 30HP, and it is non-clogging and can handle the most challenging solids. The high-efficiency, high chrome agitator, is capable of lifting 2.5-inch solids. For duty use, the sturdy design incorporates heavy-duty bearings for shocks and overloads.

DAE Pumps Miramar Submersible Slurry Pumps are economical equivalent pumps to Atlas Copco dewatering slurry pumps. The Miramar pumps offer the same high-quality material and performance as Atlas Copco WEDA series. Contact us today to find out more about how DAE Pumps can help you with all your dewatering and material moving needs.

DAE Pumps dredging equipment is ideal for a variety of applications, including dredging dams, ports, marinas, rivers, canals, lakes, ponds, and more. Ensuring water quality and capacity are essential in hydroelectric and water supply dams, making DAE Pumps dredge pumps perfect for removing excess sand and silt. Clearing sediment and contaminates from riverbeds, channels, canals, and oceans help restore safe navigation and shoreline formations, and dredging lakes and ponds clean and remove contaminants and tailing. As ocean currents move sediments, the seafloor slowly rises, lowering the depth of marinas and ports. Dredging ensures safe access for boats and other water vessels.

Centrifugal pumps from DAE Pumps are perfectly suited for demanding process applications. Their heavy-duty construction ensures long-lasting performance in rugged conditions. The DAE Pumps knowledge and experience building top-of-the-line pumps make our centrifugal process pumps ideal in many markets and applications.

The durable DAE Pumps centrifugal pumps provide a proven ability to handle a variety of applications in the water and wastewater industries. These reliable instruments are perfect solutions for pumping chemicals used to treat water, irrigation, fountains, and much more.

For help selecting the most efficient pump for your project, call us at (760) 821-8112 or submit a request. Find the right pump size, volume, speed that you need. Get a FREE custom pump curve to ensure the right pump.

The motor or engine on a pump is as important as the pump itself. It is the driving force that makes the pump go. DAE Pumps offer a variety of motor choices: electric, diesel, and hydraulic.

Frames and skids hold the pump and motor together to make a complete unit. The frame provides stability for the placement of the pump and motor with the intent of a permanent install or seldom movement. The DAE Pumps trailer brings mobility to centrifugal slurry pumps. The whole unit, skid included, is mounted onto a trailer for mobile accessibility. Many industries use centrifugal pumps for performing multiple applications, and they move from one location to another quite frequently. The trailer provides a tremendous advantage of being on wheels.

Centrifugal pumps come in many shapes and sizes. There are two main parts to a centrifugal pump; the pump and the motor/engine. The electric motor or a diesel engine converts the energy it creates into mechanical energy. This mechanical energy drives the pump and moves the water. The centrifugal slurry pumps pull water and other materials in through the inlet and pushes it out through the outlet/discharge.

The electric motor and diesel engine work relatively similarly. A motor consists of a fan and protective casing mounted at the back. Inside the motor is the stator. The stator holds copper coils. Concentric to this is the rotor and shaft. The rotor rotates, and as it spins, so does the pump shaft. The shaft runs the entire length of the motor and into the pump where it connects to the pump’s impeller.

There are a couple of variations to a centrifugal pump. Some models of centrifugal pumps have a separate shaft for the pump and the motor. The connection between the separated shafts is called the coupling. These coupled pumps will contain a bearing house with bearings. The pump shaft then continues into the pump casing. As it enters the casing it passes through a gland, packing, and the stuffing box, which combined to form a seal. The shaft then connects to the impeller. The impeller imparts centrifugal force onto the fluid that makes it to move liquids through a pipe or hose. The impeller is in the pump casing. The casing contains and directs the flow of water as the impeller pulls it in through the suction inlet and pushes it out through the discharge outlet.

At the pump casing, there is a channel for water to flow along, which is called the volute. The volute spirals around the perimeter of the pump casing to the outlet. This channel increases in diameter as it makes its way to the outlet. The shaft passes through the seals and into the pump casing, where it connects to the impeller.

Liquid engulfs the impeller, and when it rotates, the fluid within the impeller also spins and is forced outward to the volute. As the fluid moves outwards, off of the impeller, it creates a region of low pressure that pulls more water in through the suction inlet.  The fluids enter the eye of the impeller and are trapped there between the blades. As the impeller rotates, it imparts kinetic energy or velocity onto the liquid. By the time the liquid reaches the edge of the impeller, it is moving at a very high speed. This high-speed liquid flows into the volute where it hits the wall of a pump casing. This impact converts the velocity into potential energy or pressure. More fluid follows behind this developing a flow.

The thickness of the impeller and the rotational speed affects the volume flow rate of the pump and the diameter of the impeller, and the rotational speed increases the pressure it can produce.

Net Positive Suction Pressure or NPSH is associated with pump suction. At the end of this acronym are two other letters NPSHR and NPSHA. The R is the required NPSH. Each pump tests for this value. At DAE Pumps, we provide a pump operation chart with all our specs. The R-value is a warning or danger point. As the fluid enters the pump and flows into the impeller’s eye, it experiences a lot of energy due to the friction, giving a pressure drop. At certain conditions, the fluids flowing through this section can reach a boiling point. Once this happens, cavitation may occur.

The last letter in NPSHA stands for Available. The net positive suction pressure available depends on the installation of the pump and should be calculated. NPSHA takes into consideration things like insulation types, elevation, liquid temperature, liquid boiling point, much more. Available pressure should always be higher than the required value. For example, if the NPSHA is 12 for the pump requiring an NPSHR of 4 then the pump should be okay. However, a pump that required an NPSHR of 15 than the available NPSH is insufficient, and cavitation will occur.

DAE Pumps provides custom pump curves per the information you provide. Including as much information about the project allow us to best match a pump with your needs, so the centrifugal pump you get is ideal for the project.

Cavitation in pumps is the deterioration of the pump’s metal due to the overheating of water. Cavitation destroys the pump’s impeller and casing that lead to replacing parts and the pump altogether.

Water can turn from a liquid state into steam or gas and boils at around 100 degrees Celsius at sea level. However, at a higher elevation, water boils at a lower temperature because of atmospheric pressure. If this pressure is less than the vapor pressure of the liquid that is pumping, then the water can reach a boiling point. When this happens, cavitation occurs.

During cavitation, air particles within the water expand, and as they reach the boiling point, they collapse in on themselves very rapidly. As they collapse, they start to damage the impeller and pump casing. This damage removes small parts of metal from the surface, and if this keeps occurring, then it will eventually destroy the pump. Therefore, you must ensure the Available pressure is higher than the Required pressure of the pump.

DAE Pumps provides a full spectrum of centrifugal slurry pumps and accessories for completing all your tough dredging projects.We provide turnkey solutions with complete centrifugal slurry pump systems that includeslurry hoses, slurry flow meters, power units,and more.Choose from multiple sizes of slurry hoses for the transferring of materials, wireless flow meters for measuring the flow rate in gallons per minute of liquid, and power units for operation.Parts are always in stock and available for immediate shipping to anywhere in the US and the world.

The 6-Inch heavy duty lines of slurry pump by EDDY Pump. Close coupled or flex coupled version pumps available in extra heavy duty (HD) class. Also, all of our pumps can be setup horizontal or vertical.

Our industrial pumps are non-clog pumps designed for high solids pumping applications. Our patented pump technology outperforms all centrifugal, vortex and positive displacement pumps in a variety of the most difficult pumping applications.

In harsh conditions with sand, sludge, rocks, slurry, normal dredge pumps clog, wear and fail more often. This leads to downtime for maintenance, hurting your bottom line. This is not the case with EDDY Pumps since we have the tolerance to pump objects up to 12 inches!

The “pond” is actually a man made dam which covers an area of about 40ha and has rockfill embankments of up to 53m high along the southern side that forms the impoundment.  It initially constructed in 1959 to act as a tailings pond to take the bauxite residue (red mud) from the Ewarton Plant situated about 5km away and 300m lower.  The red mud was pumped as a slurry comprising about 20% solids to the pond over a period of about 32 years up to 1991 when the pond was replaced by the Charlemount Mud Stacking and Drying Facility.  During this period the pond embankments (referred to as dams), were raised up to 7 times providing a final crest elevation of 472m.  The pond was however never filled to its final design capacity and the mud beach level remained at about 469m and the central area about 458m leaving a concave depression which held about 1.4mil m3 of water with elevated pH and some caustic content.

The remediation plan for the pond includes the removal of the ponded water and then the regrading of the mud surface to be free draining so that it can be stabilised and vegetated.  About 500,000 m3 of mud will need to be moved over a distance of up to 1km in order to create the required profile.  Due to the very soft nature of the surface muds (shear strength of less than 3kPa) its bearing capacity is less than 20kPa hence it is not accessible using even modified earthworks equipment.  In addition, the muds are thyrotrophic and under any vibration or shear loading, rapidly liquefy resulting in significant reduction in shear strength and loss of bearing capacity.  Using conventional earthmoving equipment would therefore require extensive “floating” haul roads with a high risk of machinery getting stuck or entire plant loss and risk to personnel.  It was therefore decided to investigate the possibility of pumping the in-situ red mud.

A mud pumping trial was undertaken to assess the feasibility of using this technique to do the bulk mud moving.  Pumping red mud is not unusual and the muds were initially pumped up to Mt Rosser Pond.  However, the muds are usually pumped at a solids content of 30% or less.  Once deposited, they can take years to reconsolidate and firm up sufficiently to allow access for light earthworks and agricultural plant.

In addition to the mud pumping, the trial included infilling three small scale geotubes to assess their performance as these may be needed as part of the regrading works.

The main aim of the pump trial was to determine if the muds could be pumped in their insitu state, and if not, what amount of water is required and how the variations in water content affect pump rates.

The mud pumping trial was undertaken using a 4” EDDY Pump.  This pump was recommended due to its ability to handle variable solids and robust operating mechanism.  The pump unit incorporated a hydraulic drive and cutter head.  The unit was mounted onto the boom of a JCB 220 excavator which also supplied the hydraulic feed to power the pump for the required range of 30-40 GPM at 3,500 to 4,000 psi (2428MPa).  The cutter head was powered by a standalone hydraulic power unit capable of providing the required 30gpm at 200psi (1.9 l/s at 13.8MPa).  If mounted on a 30-ton excavator with a System 14 hydraulic system and dual auxiliary feeds to the boom, all necessary hydraulic power for the pump and cutter head can be supplied by the excavator.  This equipment was however not available at the time in Jamaica.

In addition to the pump mounted on the excavator a Long Reach excavator (CAT 325) was used to move muds towards the cutter head but also to loosen up the muds and mix in additional water to facilitate pumping.  Water was added by pumping it directly from the pond using a 3” diesel water pump.

Prior to pumping the muds, the mud pump would operate in recirculation mode in order to prime the pump.  When in recirculation (re-circ) mode, the material pumped would be diverted to a short discharge pipe mounted on the pump directed back parallel to the cutter head. This action would help agitate and stir the muds.

The geotubes for the trials were 6m long and 1m high (filled) and were supplied by Tencate.  The tubes were made from a woven polyester – GT1000M and had a central top filling point.  A set of small bags with a polymer test set was also provided but this was not tried during this occasion.

A geotechnical soils investigation was undertaken on the muds within Mt Rosser pond in 2004.  It showed the material to be predominantly clayey silt with approximately 13% sand, 29% clay and 58% silt using conventional sieve analysis and hydrometer.  Atterberg limits indicate that the material is an intermediate to high plasticity clay.  The muds do however vary across the lake and also vertically. This is mainly as a consequence of the deposition process and discharge location.  Close to the discharge location the courser materials would settle out first and the finer materials would disperse furthest and to the opposite end of the pond.  The results are presented in figure 4.1.

Earlier this year, additional mud samples were tested as it was evident that standard soil mechanics tests did not provide an accurate assessment of this fine material.  This was particularly evident in tests done with dry sieving which shows the material as well-graded sand (see results for samples 5300, 5301, 5302 on figure 4.2).  When dispersed in water, even with an agent, the ‘yield-pseudo-plastic’ rheology of the muds appeared to affect the hydrometer results with large variations between tests (see results of samples PFT4&5 taken during mud pumping trials on figure 4.2).

The additional testing comprised of undertaking gradings using a Laser Particle Analyzer. The results indicated that the muds are predominantly Silt although the silt % varied from 30% to 80% with the material being either more sandy or more clayey (up to 15% clay). See results of samples ending in “L” on figure 4.2 below.

Moisture content tests on the muds taken from within the mud pond but below the ponded water ranged from 100% to 150% (50% to 40% solids).  The muds at the pump test location were 137% (42% solids).

Shear strength was generally very low ranging from 1kPa to 6kPa increasing with depth.  Dynamic probes previously undertaken indicated that the muds are “very soft” to 5m increasing in strength slightly to “soft” at a depth of 9m after which they increase to firm becoming stiff.

The pH of the muds ranged from 10.3 to 11.7, (ave 11.2).  Previous testing indicated that the surface muds have the lower pH although once through the crust, the pH tends to be higher. When doing the trials, the muds up to a depth of about 2.5m was intermixed, hence any stratification in pH could not be determined.

Initially, pumping was problematic mainly due to the excavator being underpowered. This was diagnosed as a hydraulic pump problem and the excavator was replaced.  The cutter head (which also acts to protect the intake) tended to blind with mud (Photo 5.1) and was also not providing enough agitation to liquefy the muds.  This was partly resolved by adding “stirrers” (2 steel loops welded either side) to the rotating cutter head and also a “comb” (Photo 5.2) to keep the gaps within the cutter head open.

Mud pumping rates varied from 21 l/s to 52 l/s (332 – 824gpm) and it was clearly visible that the more liquid the muds were the higher the pump rate was.  Samples were taken at different discharge rates and moisture content and percent solids determined by laboratory testing.  The results are plotted in Figure 5.1 and although scattered, do give an indication of the effects of solids content on flow rates.  The natural moisture content of the muds (insitu) at the test location was 137%, or 42% solids.  This is shown in Figure 5.1 as a vertical line.  Pumping muds close to the percent solids was achieved although flow rates were low.

As mentioned previously, the long reach excavator was used to loosen up the muds.  Water was pumped from the pond using a 3” pump into the excavation and the long reach would then work the muds to mix the water in.  The mud pump would then be used in recirculation mode to further mix the muds into a more consistent state.  Even with this mixing and agitation, the water tended to concentrate on the surface. This aided the initial process of priming the pump and once primed thicker muds at 1m to 2m below the surface could be pumped.  However, it was found that the deeper muds tended to be lumpy and this would significantly reduce or stop the flow requiring the pump to be lifted into thinner muds or having to go back into re-circ mode or having to fully re-prime.  The pump discharge was therefore very inconsistent as the suction intake position constantly needed adjustment in an attempt to get adequate discharge but also pump the thickest muds possible.

Discharge of the pumped muds was through 30m of flexible hose then 60m of 4” HDPE pipe which had an internal diameter of about 87mm (3.5”).    The muds were discharged onto the original mud beach which lies at a gradient of about 9%. On deposition the muds slowly flowed down gradient.  At times the flow would stop and the muds would build up then flow again in a wave motion.  The natural angle of repose would therefore be a few degrees less than this – probably 5% to 6%.

Although the muds have very low shear strength, and on agitation liquefy, the sides of the excavation had sufficient strength to stand about 2m near vertical.  Even overnight, there was limited slumping and the bank could be undermined by about 0.5m with the cutter head/agitator before collapsing.

On termination of pumping, in order to flush the pipeline, thin watery muds were pumped until the line was clear. A “T” valve system was then used to connect the 3” water pump line and this was then used to flush the pipe with water.

Three geotubes (1m x 6m) were filled with red muds pumped using the 4” Eddy pump. Fill rates were about 30 to 40l/s although it was difficult to assess as the flow and mud consistence was not visible.

Tube 1 was filled initially with more runny mud and then thicker muds as the pump operator got a better feel for conditions.  The tube was filled until firm.  The second tube was filled with thicker muds and filling continued until the tube was taut.  These two tubes were positioned on the sloping beach in order to form a small “U” impoundment area that would later be filled with pumped muds.  Although the area was prepared, the sloping ground caused the first tube to rotate through about 20 degrees. The tube was staked and the downslope side backfilled.  A more defined bed was created for the second tube and the same rotational issue was limited.  The two filled tubes with the ponded mud are shown in Photos 5.7 and 5.8.  Other than a small leak at the contact between the two geotubes, the ponding of the muds was successful.

The third tube was positioned on level ground. It was filled with medium runny (but consistent thickness) muds and was filled until the tube was taut.

In all three cases, there was very little mud loss or seepage from the tubes.  When stood on, some red water would squeeze out around the pressure area.  Once filled taut, the entire bag would have small red water droplets form on the outside (visible in Photo 5.11) , but the seepage was in general nominal.

The tubes have been monitored and the most recent photo’s taken on 10 October 2011 (6 weeks after filling) show how the tubes have reduced in volume due to the dewatering of the contained muds.  Volume loss is estimated to be around 30%.  The anticipated moisture content would therefore be about 90% and the solids around 53%.

The muds pumped into the trial pond behind the geotubes were medium thick to thick, probably in the order of 37 – 40% solids.  After 6 weeks the mud has not only firmed-up but had dried out significantly with wide and deep surface cracks as are evident in Photo 5.14 and 5.15.

The muds can be pumped at close to their insitu moisture content and most likely at their in-situ moisture content if they were agitated more and the pipeline system was designed to reduce friction losses.

Be able to access the mud surface and move around efficiently and safely. The suggestion is to have the pump mounted on a pontoon that is positioned using high strength rope (dynema) or steel cable.  The pump system should be remotely controlled as this would limit regular movement of personnel on the muds.

Have sufficient power and volume capacity to pump the muds at close to or at in-situ moisture content and discharge them about 1000m through a flexible pipeline.

It was also evident from the trials that the muds do not slump and flow readily.  It will therefore be necessary to have an amphibious excavator to loosen up the muds in the area around the pump head.  This weakened and more liquid mud would also aid the movement of the pump pontoon.  To also limit the amount of movement the pontoon will need to do, the amphibious excavator could also move muds towards the pump location.

Using the capacity of the 4” mud pump, mud moving would take about 1.5 to 2 years, the pump will however need to be more suited to the task.  A target period of 1 year however seems reasonable.  However, prior to this, equipment will need to be procured and imported into Jamaica. The 6 and 10 inch Excavator Dredge Pump Attachments are also being considered as an option for higher GMP and a more aggressive completion timeline.  A preliminary programme is as follows:

NOV 12-P-160 Mud Pump is rated at 1600 input horsepower (1193 kw) at 120 strokes per minute, with a 12-inch (304.8 mm) stroke. Multiple liner sizes allow pressures and volumes to handle circulation requirements in deep drilling applications.

Flexibility: Compact engineering provides higher efficiency in less space. The NOV 12-P-160 Triplex Mud Pump light weight and flexible design make it easily adaptable to a variety of rig configurations. This provides flexibility as drilling requirements and conditions change.

Fluid End Modules: NOV offers a choice of fluid end modules and valve covers for every P Series pump model to select the fluid end module that exactly matches drilling requirements. All pump models can be equipped with either the standard or premium forged, two-piece interchangeable fluid modules

The 2,200-hp mud pump for offshore applications is a single-acting reciprocating triplex mud pump designed for high fluid flow rates, even at low operating speeds, and with a long stroke design. These features reduce the number of load reversals in critical components and increase the life of fluid end parts.

The pump’s critical components are strategically placed to make maintenance and inspection far easier and safer. The two-piece, quick-release piston rod lets you remove the piston without disturbing the liner, minimizing downtime when you’re replacing fluid parts.

Please try again in a few minutes. If the issue persist, please contact the site owner for further assistance. Reference ID IP Address Date and Time 1ae14a39416563d7fd137514e0bafc1d 63.210.148.230 02/25/2023 04:41 PM UTC

Rig pump output, normally in volume per stroke, of mud pumps on the rig is  one of important figures that we really need to know because we will use pump out put figures to calculate many parameters such as bottom up strokes,  wash out depth, tracking drilling fluid, etc. In this post, you will learn how to calculate pump out put for triplex pump and duplex pump in bothOilfield and Metric Unit.

Bourgoyne, A.J.T., Chenevert , M.E. & Millheim, K.K., 1986. SPE Textbook Series, Volume 2: Applied Drilling Engineering, Society of Petroleum Engineers.

Last month, we started a discussion on drilling fluids viscosity with a look at some terms drillers should know and the basics of viscosity testing. This month, we get into detail to help drillers understand how viscosity affects mud pump performance.

First off, know that all mud pumps are calibrated with water at sea level which, to remind readers, has a 26s viscosity. That means that, at 40s viscosity, you lose 10-15% capacity; at 60s viscosity, up to 30%; and at 80s viscosity, up to 50%. Operators need to take this into account when calculating flow requirements. The gauge on the control panel of the drill does not automatically calculate viscosity, nor is there a magic dial on the pump to take viscosity into account. It is up to us to account for this and apply it correctly.

Here’s an example for a pilot bore of 6 inches in clay. In a perfect world, diameter squared divided by 24.5 equals gallons per foot. Plugging “6” in, we get:

The above example is for a pilot hole. As tools get bigger, the gaps in capacity increase exponentially. For a 16-inch bore, the math calls for 31.34 gallons per foot; however, if you dial in 32 gallons at 40s, you only pump a little over 26 gallons. Adjust up, and dial in 37 gallons. The difference in volume is directly related to failure or success of our bore.

The gauge on the control panel of the drill does not automatically calculate viscosity, nor is there a magic dial on the pump to take viscosity into account. It is up to us to account for this and apply it correctly.

The reverse applies applied to clays where we require less viscosity and gel strength when drilling. The natural clays break down into fines and work in concert with the bentonite. This means the fines will increase our viscosities and, although a filter cake is required, there is less chance of fluid losses in clay. Using a 35s to 40s fluid is recommended. If we use a 60s to 80s fluid, densities skyrocket quickly, and it will be difficult to flow out the cuttings. We would be just re-constituting the ground conditions behind the drill head and increasing the risk of inadvertent returns on the bore path.

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