Variable-speed drive system for high pressure grinding rolls

Reliable high pressure grinding and increased productivity

High pressure grinding rolls (HPGRs), also known as roller presses, are rapidly gaining acceptance in hard-rock processing, primarily due to their energy efficiency when applied in comminution.

Application challenges
Today’s highly competitive mining industry calls for continuously operating high throughput equipment, such as the HPGR, to be designed for maximum availability and reliability. In case of the HPGR the optimum point of operation is widely influenced by ore properties like feed size, hardness and the rate of feed. Energy cost and water savings, smaller plant footprint and extended availability are some of the main reasons why we see more and more HPGRs within crushing and grinding circuits.

Optimizing your HPGR to maximum capacity
To ensure maximum optimization of your HPGR, a variety of critical factors have to be taken into consideration when selecting the drive solution. A ‘fit for purpose’ drive system should:

- Maximize throughput
- Minimize roller wear
- Provide highest degree of operational flexibility
- Maintain high availability
- Ensure lowest operation and capital costs

ABB’s smart solution for HPGRs is designed to deliver on all those key factors, making it the optimal system to enhance grinding productivity of your HPGRS.

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