What are the main factors affecting the efficiency of grinding technology?
The main factors that influence the efficiency of grinding technology are summarized in the following aspects.
(1) The influence of mineral composition and physical properties on the ore properties is very great. For example, when the ore stone minerals is coarse and loose structure of soft brittle, the grinding is easy. And when the useful mineral particles with a thin skin, the structure is compact, and the hardness is larger, it is more difficult to grind. General speaking, coarse particles in the coarse grinding is easily generated, granularity is faster, and it is hard to fine. Therefore, the grinding technology efficiency of the coarse grinding is higher than that of the fine grinding.
(2) The equipment factors have a certain influence on the grinding efficiency. In addition, with grinding mills constitute closed classifier, when the low classification efficiency, easy over grinding, thus reduce the grinding efficiency.
(3) The influence of operating factors on the efficiency of grinding technology. Such as in closed-circuit grinding, sand returning ratio is too large, and exceed the mill normal through capacity, in grinding ore products "rough running" phenomenon. But the sand is too small, or there is no sand, it is easy to cause the phenomenon of grinding. Therefore, grinding is required to input the ore uniformly and stable.
When the amount is unstable , it will affect the efficiency of grinding technology. If the grinding size is not proper, also affect the grinding efficiency. The grinding concentration has great influence on the technical efficiency of grinding. Therefore, in the operation it should be mastered to adapt to the grinding concentration, which requires strict control of water consumption. In general the coarse grinding concentration is usually 85%-75% fine grinding concentration is generally 75% – 65%.