Magnetite Separation Production Line

Process Introduction

1.Processing Technology

According to the ore magnetism, the suitable mineral processing technology is chosen. Magnetic separation is the main processing technology, cooperating with gravity separation, flotation, roasting magnetic separation as joined process method.

2.Strong Magnetic Iron Ore Processing Technology

It is mainly used for low-grade magnetite ore. As for the strong ore magnetism, easy to grind and separate, the coarse-grained magnetite common uses two-stage grinding, othervise the multiple-stage grinding flow is used. At present, Xinhai fine grinding technology can increase 61% concentrate grade to 67%.

3.Weak Magnetic Iron Ore Processing Technology

After magnetic roasting, weak magnetic ore can be separated by strong magnetic separation.

4.Fine Grinding

In the flow of two-stage grinding stage separation single weak magnetic separation, the fine grinding on-screen regrinding re-processing technology is added. It can separate the dissociated fine-grained minerals, reduceing over-grinding and increasing capacity. The concentrate grade can be increase about 2%.

Production instance

Taking a magnetite in Inner Mongolia as an example, the main metal mineral is magnetite, the structure is mainly disseminated structure, the grain size of khenpo is relatively fine, and the average iron content is 12-16%. The dressing plant obtains more than 65% of high-quality iron ore concentrate by adopting the grinding-weak magnetic separation process, and the recovery rate is as high as 90%. After long-term operation, the cost of the plant is relatively high. Therefore, Xinhai is entrusted to do technical transformation. According to the fact that the crushing and grinding process accounts for 70-80% of the beneficiation cost, Xinhai adopts the processes of early harvest and early throwing, stage grinding and stage separation, and successfully reduces the cost of the beneficiation plant under the premise of ensuring the original index.