Generally, a pump suitable for conveying suspended solids in a liquid (water) is called a slurry pump. At present, it is one of the indispensable equipment in each technological process of beneficiation and coal preparation plants.
Type HS, AH and M pumps are cantilevered, horizontal, slurry pumps. They are designed for handle abrasive, high density slurries in the metallurgical, mining, coal, power plant, building material and other industrial departments. The pumps of this type also may be installed in multistage series.
The slurry pump adopts double shell structure, Double-pump casing-structure is safe and reliable. Its outside pump-casing bears pressure, the inside pump-casing bears wear and abrasion. Meanwhile, double-pump casing structure can save cost and make easy maintain by just changing the worn internal parts.
The wet parts for type HS, AH and M pumps can be hard metal or rubber which can make service life longer and more stable. Customer can select material according to media and pipe layout. The installation size of pumps is the same as that of Warman.
A slurry pump is a centrifugal type, specifically designed for hydraulic conveyancing of abrasive and often corrosive solid particles within a carrier fluid. the slurry pump should be of a low specific speed design, allowing slower operating speeds than conventional water pumps in order to reduce the velocity of the solid particles and thereby reducing wear rates. slurry pump components that come in contact with the pumped medium are manufactured from wear resistant metallic or elastomeric materials, selected to suit each particular application.
slurry pumps are used for applications where solids are present in the fluid stream. application based pump and material selections should be made for trouble free performance when handling highly abrasive or corrosive liquids. sulzer offers a complete range of slurry pumps specially designed to handle light to severe slurry duty.
High quality slurry pumps are perfectly suited for mining, metals, fertilizers and any other applications requiring reliable performance when handling abrasive fluids. the optimised hydraulic design delivers superior performance through high efficiency impellers and volutes casings designed for streamlined slurry flow, contributing to low energy consumption subsequent total cost of ownership.
Slurry pump selection
Selecting the right pump for slurries is critical to get the most bang for your buck. basic pump components, such as the impeller size and design, material of construction, and discharge configurations must be considered to ensure the pump will hold up against the wear caused by an abrasive slurry. slurry pumps are generally larger in size when compared to low-viscosity liquid pumps and usually require more horsepower to operate because they're less efficient. bearings and shafts must be more rugged and rigid as well.
Many types of pumps are used for pumping slurries, but the most common slurry pump is the centrifugal pump (pictured above). the centrifugal slurry pump uses the centrifugal force generated by a rotating impeller to impact kinetic energy to the slurry, similar to how a water-like liquid would move through a standard centrifugal pump.
slurry pumping considerations
If you have experience pumping slurries, you know it's not an easy task. slurries are heavy and difficult to pump. they cause excessive wear on pumps and their components and are known to clog suction and discharge lines if not moving fast enough. most importantly, it’s a challenge to make slurry pumps last for a reasonable amount of time. but, there are a few things you can do to extend the life of your slurry pump and make pumping slurry less of a challenge.
slurry pumping components
Slurry pump Impeller
the impeller, either elastomer, stainless steel or high-chrome material, is the main rotating component which normally has vanes to impart the centrifugal force to the liquid.
Slurry pump Casing
split outer casing halves of cast contain the wear liners and provide high operation pressure capabilities. the casing shape is generally of semi-volute or concentric, efficiencies of which are less than that of the volute type.
Shaft and bearing assembly
A large diameter shaft with a short overhang minimizes deflection and vibration. heavy-duty roller bearing are housed in a removable bearing cartridge.
Slurry pump shaft sleeve
A hardened, heavy-duty corrosion-resistant sleeve with o-ring seals at both ends protects the shaft. a split fit allows the sleeve removed or installed quickly.