FLSmidth Centrifugal Slurry Pump KREBS® UMD™

Key Benefits Increased wear life Lower power consumption Increased mill throughput Reduced cost-per-ton pumped Lower inventory requirements A heavy-duty slurry pump for tough, abrasive applications Our KREBS UMD™ centrifugal slurry pump is the most advanced heavy-duty slurry pump available for mill discharge applications. Optimized hydraulic design delivers the highest efficiency and even wear in the most abrasive mining applications. What we offer Ultimate slurry pumping performance Pumping the discharge from hard rock grinding mills is one of the most high-wear applications due to high concentrations of abrasive solids. Conversely, the hydrotransport process in oil sands deals with a range of particle sizes from very coarse sand and heavy lumps to fine clay and coarse silica sand. Our UMD pump was designed specifically for these highly abrasive and diverse particle size applications. By integrating a superior hydraulic design and the patented millMAX suction-side sealing system, the UMD maximizes wear life and increases efficiency. Applications include: Mill discharge Oil sands hydrotransport and PSV/PSC feed and underflow Tailings Froth Cyclone feed Thickener underflow High-flow applications Other highly abrasive applications Casing symmetry Many customer sites have pumps rotating in both left- and right-hand orientations. This requires keeping different casings, liners and impellers in stock. Our UMD has a symmetric casing, which means for either orientation, it uses the same casing, suction liner, wear ring and back liner, reducing customer inventory requirements. Unique design The UMD’s large clearance between the casing and impeller creates a deep bed of slurry that acts as a buffer zone, shielding the casing from the direct impact of coarse solids. An enlarged cutwater clearance reduces turbulence to extend pump life. Side liners with oversized outer diameters protect the casing from high velocity and turbulence at the periphery of the impeller. The impeller features optimized pumping vane shape, increased shroud diameter, and improved expelling vane shape to bring you the most hydraulically advanced impeller of its kind. The design also accommodates fine solids with durable, replaceable and less expensive liners. We extended the back liner and suction liner diameters to reduce wear and improve performance. Range of options The UMD includes a wide range of pump sizes that can handle flows from 350 to 15,000 cubic meters per hour (1,500 to 66,000 gallons per minute). The UMD high-pressure models are also available for multistage high-pressure applications. UMD-R elastomer lined pump The UMD-R is a fully rubber lined, split case version of the UMD, designed for heavy-duty mill discharge applications. With heavy-duty rubber liners the UMD-R is particularly suited for wide flow ranges and corrosive duties. Product Features Optimized design for the most abrasive applications The UMD pump is the longest-lasting and most efficient slurry pump in its class. This pump is ideal for highly abrasive applications, such as hard rock mining and oil sands, with efficiency, long wear life and reliability. Large clearances The UMD’s large clearance between the casing and impeller creates a deep bed of slurry that acts as a buffer zone, shielding the casing from the direct impact of coarse solids. An enlarged cutwater clearance reduces turbulence to extend pump life. Side liners with oversized outer diameters protect the casing from high velocity and turbulence at the periphery of the impeller. Patented suction-side sealing An adjustable wear ring takes up clearance at the impeller, reducing suction-side recirculation, maintaining hydraulic performance. The extended wear ring diameter is designed to increase the life of the millMAX suction-side sealing system. Four external screws provide online wear clearance adjustment. The suction side clearance is fully adjustable while in operation. Replaceable suction and back liners Replaceable suction and back liners, with patented extended diameters, protect the casing from turbulent wear. High chrome and elastomer liner material options are available, providing the ideal solutions for a wide range of applications and flow. Optimized impeller design We have optimized the shape of the pumping vanes, increased the shroud diameter, and improved the shape of expelling vanes to bring you the most hydraulically advanced impeller of its kind.