Sludge pumps, or slurry transfer pumps as they are otherwise known, are designed for transferring viscous fluids with high solid content. Typically, the sludge transfer pump design is a positive displacement pump to enable the handling of heavy, viscous and abrasive liquids including oil sludge, bio waste, sewage, mud and lime slurry.
Heavy duty sludge pumps often contain a chopper impeller that cuts down the solids into smaller, manageable pieces to allow them to be more easily passed through. Alternatively vortex impellers are installed on abrasive slurry pumps to create a vacuum and allow solids to pass through the pump without interfering with the internals. Slurry pumps are common in mining, construction, agricultural and industrial applications where waste fluids are processed, and are often progressive cavity or peristaltic pumps.
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