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CMCR mill underflow pumps are primarily used for slurry transport in grinding circuits. Grinding operations are typically characterized by continuous running, fluctuations in slurry concentration, and particle abrasion; therefore, selection should not rely solely on the pump port size or motor power.

First, the slurry conditions must be confirmed, including solid content, density, maximum particle size, particle hardness, and temperature. As mill operating conditions change, slurry concentration and flow rates may also fluctuate, so it is recommended to provide both normal operating conditions and potential maximum operating conditions.

Second, system parameters must be verified, including: normal flow rate and maximum flow rate; required head; pipe length and diameter; number of elbows and valves; discharge terminal pressure; daily operating hours; and whether a standby pump is required.

If the pump needs to feed cyclones, classifying equipment, or other devices with specific inlet pressure requirements, the target pressure and system layout details should also be provided.

For continuously operating grinding circuits, wear parts and standby plans are equally important. During procurement, it is advisable to confirm the supply scope for impellers, pump casings, wear plates, rubber linings, shaft sleeves, and seals, and to establish a spare parts inventory plan based on actual wear rates.

The final CMCR model, rubber material selection, and motor configuration should be determined based on actual operating conditions and performance curves.