KREBS centrifugal slurry pumps are designed for heavy-duty output, abrasive and corrosive duties, mill discharge, and high-efficiency processes. Our pumps are used in hard rock, dredging, pulp and paper, and industrial operations all over the world.
The key advantages of our slurry pump design are lower power requirements (up to 5% to 15% less) and long, even wear life – both of which result in lower cost-per-ton pumped and reduced plant downtime.
Prior to the development of the KREBS product line, slurry pumps experienced two major problems:
1. Flow recirculating back to the impeller eye on the suction side
2. Mechanical grinding of solids between the suction liner and impeller
Conventional slurry pumps can only solve one of these issues – but not both.
To stop recirculation, conventional pumps close the suction-side clearance with a full-face suction liner adjustment or by adjusting the impeller to the suction liner. The side effect of this is that solids build up in the tight gap between the rotating impeller and static suction liner, and are crushed between the two components. Mechanical grinding of these solids consumes power and wears the impeller and the suction liner. As these parts wear, the suction-side gap grows and the slurry is free to recirculate back to the impeller eye. This reduces the flow, head and efficiency of the pump.
Our unique design solves both the grinding and the recirculation problems within the pump. Our range of KREBS pumps feature a proprietary suction-side sealing system – the wear ring – that closes the suction-side clearance at the impeller eye, rather than the entire diameter of the impeller. The wear ring solution stops recirculation, while still allowing for a large gap between the impeller and suction liner – eliminating the grinding of solids.
As the pump wears, the externally adjustable wear ring closes the suction-side gap while the pump is running, restoring performance to an “as new” condition. Pumps without the wear ring feature either have to adjust the impeller and suction liner together (causing more grinding of solids) or increase the operating speed to maintain performance (accelerating the wear on all wet end components). KREBS pumps maintain design performance throughout the life of the pump, without increasing the pump speed. The wear ring feature extends the life of all wet end parts and reduces power consumption.
The millMAX™ centrifugal slurry pump line includes pumps specifically designed for high efficiency, high pressure, high head and heavy-duty applications. The millMAX is commonly used in copper, coal, iron ore, industrial, oil sands and coal power (WFGD) applications.
Benefits of the millMAX include:
Our split-case slurryMAX™ centrifugal pump is the most versatile, efficient and longest-lasting slurry pump of its kind. With a wide range of polymer and metal material options, it is ideal for the majority of applications across multiple industries, including copper, coal, iron ore, industrial and aggregates.
Benefits of the slurryMAX include:
Our gravelMAX™ centrifugal slurry pump is designed for severely abrasive slurries.
Benefits of the gravelMAX include:
The UMD™ pump is our heavy-duty slurry pump, focused on maximising wear life while still maintaining the highest efficiency. High-pressure and rubber-lined UMD pump models are also available.
Benefits of the UMD include:
We developed our vMAX™ line of vertical cantilever hard-metal pumps for conventional clean-up sump and process duties. The vMAX delivers continuous abrasive slurry service in sumps, without the need for sump level control.
Benefits of the vMAX include:
Every application is different, and the correct pump type and model is critical to maintaining an efficient and cost-effective pumping operation. You can count on our pump experts to work with you to address your specific process challenges. Add a KREBS pump to your operation, and watch your total cost of ownership drop.