KREBS® - Model millMAX-e -High Efficiency Slurry Pump for Abrasive Slurry

Advanced slurry pump technology

Mining operations around the world rely on the long wear life characteristics of our KREBS® millMAX™ Pumps.

Like all the pumps in the KREBS family, the millMAX-e Pump includes the patented suction side sealing system. This system reduces wear by maintaining suction side clearances within the pump to reduce internal recirculation and eliminate the grinding between the impeller and suction side. The result allows users to maintain constant flow, pressure, and efficiency as the pump wears, without having to speed up the pump. This extends the life of all wet end parts and reduces power consumption.

Minimise cost and maximise efficiency

Our hydraulically advanced, maintenance friendly pump can enable you to downsize your drive motor, which serves to ultimately minimise your cost, while maximising your efficiency. With its low upfront cost and increased power savings, the millMAX-e can pay for itself in less than a year of operation.

Revolutionising slurry pump efficiency

Increased wear life

To stop recirculation, pumps without a wear ring must adjust their impeller and suction liner close together. This can be effective when pumping fluids with no solids; with slurries, however, the solids become caught between the rotating impeller and static suction liner, and are crushed.

Grinding these solids consumes power and wears out the impeller and liner. The millMAX wear ring stops stop recirculation, and allows for a large gap between the impeller and suction liner – eliminating solids grinding.

Lower power consumption

Because the millMAX-e maintains a constant operating speed and does not grind particles, it naturally lasts longer and consumes less power (up to 30% less). Additionally, because the wear ring is adjustable while in operation, you achieve a constant flow and pressure, without having to speed up the pump. This extends the life of all wet end parts and further reduces power consumption.

Increased efficiency

The millMAX-e with its hydraulically advanced impeller is the most efficient slurry pump in its class. Tight clearances between the impeller and casing limit recirculation and significantly increase efficiency. Because the power frame utilises the same bearing and shaft components as the equivalent millMAX™ power frames, the millMAX-e can handle applications requiring high speed and power.

Reduced capital cost

Decreased total weight of the wet end reduces capital cost. At the same time, the hydraulically advanced impeller and overall efficient design delivers a maintenance-friendly pump that will often allow you to downsize the drive motor, further minimising your cost while maximising your efficiency.

Easy operation and maintenance

The millMAX-e has an optimised unlined wet end design to allow for easy maintenance, minimised space requirements, and low replacement costs. The addition of the patented KREBS Pump Belt Tensioning system allows users to quickly change out v-belts without having to realign the sheaves. These features make the millMAX-e easy to operate and maintain.

Our millMAX-e is the most efficient slurry pump in its class

The millMAX-e Pump design includes the following:

• Wear ring: Adjustable wear ring assembly that closes the suction-side impeller clearance during operation. This reduces suction-side recirculation, helping to maintain hydraulic performance. (shown in lower right corner of image below)
• High-efficiency impeller: Increases efficiency, increases wear life, and increases maximum head.
• Reverse-taper roller bearings: Designed to increase the effective load span and improve life. The pumping action of the taper rollers discharges grease to the outside, preventing ingress of slurry and eliminating possibility of failure due to over-greasing. (shown in upper left corner of image below)
• New adjusting screw lock nut: The adjustment lock nut design compresses the wear ring carrier to provide an atmospheric seal, and locks the jacking screw in place.
• Pump sealing options: Options include water flush, centrifugal (expeller), and mechanical.

The millMAX-e is available in the following sizes:

2x1.5     50 mm x 40 mm
3x2     80 mm x 50 mm
4x3     100 mm x 80 mm
6x4     150 mm x 100 mm
8x6     200 mm x 150 mm
10x8     250 mm x 200 mm
12x10     300 mm x 250 mm
14x12     350 mm x 300 mm
16x14     400 mm x 350 mm