Ultrafine grinding machine, fine-grinding equipment for tailings processing

Release time:

2026-08-07 08:41

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Increasing attention is being paid to the liberation of residual minerals and their resource‑recovery potential in tailings reutilization. However, many older tailings, after prolonged stockpiling, exhibit a complex particle-size distribution, comprising fine powders as well as coarser particles that have not been fully liberated. When used for tailings processing, powder‑grinding mills must address challenges such as a wide particle-size range, fluctuating slurry density, and variable abrasivity.

If fine‑grinding equipment uses a single‑size grinding media throughout, it can easily result in coarse particles remaining unground while fine particles are subjected to repeated, ineffective grinding. A more rational approach is to configure multi‑grade ceramic balls based on the feed’s sieve analysis, ensuring that particles of different size fractions receive effective grinding action. Employing wet‑process continuous grinding also allows seamless integration with downstream operations such as magnetic separation, flotation, leaching, or classification. Depending on the characteristics of the tailings, the cell mill can be set up for either recirculating grinding or continuous discharge. Prior to investing in a tailings‑processing project, it is advisable to conduct trials using actual ore samples, focusing on obtaining data on feed and product particle sizes, hourly throughput, specific energy consumption per ton of ore, and media consumption, before finalizing the specifications of the industrial equipment.

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