1.One-stage closed-circuit grinding and grading
The cyclone and the first-stage grinding ball mill form a closed-circuit grinding and classification system, which has the advantages of small footprint, high classification efficiency, easy adjustment of sand return load, and more reasonable overflow particle size composition.
According to the parameter requirements of overflow fineness, concentration, sand return load, grinding concentration, etc., different angles of cones, overflow pipes, and sand sink configurations are selected to meet the production process requirements.
Flat-bottomed cyclone is suitable for working occasions with high concentration, high specific gravity of solid particles and coarse cutting particle size. Overflow fineness requirements - 200 mesh below 60% process requirements. The overflow fineness is the same, the underflow yield is easy to adjust, and the grinding capacity is increased by 10~20%.
2.Second stage closed circuit grinding
At present, most of the closed-circuit grinding and concentrate regrinding processes in the second stage of the concentrator use a cyclone and a ball mill to form a closed circuit. According to the requirements of the overflow fineness of the second-stage cyclone ranging from -200 mesh 55% to 95%, we provide options and Adjustment. The specifications of the cyclone commonly used in the second-stage closed-circuit grinding and classification are 500, 350, 250 in diameter, etc.
For fine (medium) ore regrinding and classification, the commonly used cyclone specifications are 350, 250, 150 in diameter. Small diameter cyclone has high classification accuracy. In most cases, the classification particle size-325 mesh content is more than 90~95% can be completed by cyclone classification.
3.Concentrated tailings concentration and dewatering
The combination of cyclone, concentrator and filter can efficiently complete the concentration and dehydration process. After the concentration and dehydration of the cyclone, the increase of the underflow concentration creates good conditions for filtration, which can greatly increase the filter capacity, and the reduction of the overflow concentration can effectively reduce the load of the concentrator, and can obtain higher underflow concentration and miscarriage rate.