For heavy media separation, it adopt advanced mineral processing technology, not only can saving energy and reducing consumption, which can be reduced the loss rate of ore dressing and can quickly recovery processing costs, so as to greatly improve the beneficiation economic benefits. And then we will discuss how to reduce the loss of magnetite in the following sections:

(1)Improve the work effect of the disuse screen. The high efficiency of the sieve and the open hole rate are used. Fixed screen or arc screen in front of the disuse equipment. The density of the bottom flow of heavy medium cyclone is very high, and the effect of the disuse is poor, but a part of the fine coal sieve can be introduced to improve the effect. The product is used to screen water to be sufficient, foot pressure, water to use the pressure water spraying, circulating water can be used without pressure water spraying.

(2)Using thin medium direct magnetic separation technology. According to the practice of the coal dressing plant, the direct magnetic separation of the thin medium and the strengthening of management can reduce the consumption of the medium obviously, and the medium consumption is reduced from 2.23kg per ton of coal to less than 0.77kg per ton of coal. Other coal preparation plants have also received good results after using direct magnetic separation in the final coal system.