In the grinding process, selective grinding is often needed to achieve the separation of different minerals, prevent the over-grinding of valuable minerals and reduce the over-crushing of vein minerals. In the grinding process, there are many factors affecting the effect of selective grinding, such as the nature of the ore, mill type, operating conditions, etc. Zhongya Machinery will discuss the factors affecting selective grinding through these aspects.

  1. Raw material characteristics is one of the key factors. Different raw materials have different hardness, particle size distribution and chemical composition, these characteristics directly affect the ease of grinding and selectivity. For example, raw materials with higher hardness may require stronger grinding force, while raw materials with uneven particle size distribution may lead to unstable grinding effect.
  2. The performance of the grinding equipment is also critical. The type, size and fill rate of the grinding media of the equipment, as well as parameters such as the rotational speed of the equipment and the intensity of agitation, all have an impact on the selective grinding process. High-performance grinding equipment provides more precise control of the grinding, thus improving the selectivity of the process.
  3. The setting of process parameters should not be ignored. Reasonable adjustment of process parameters such as grinding time, temperature and pressure can optimise the effect of selective grinding. Too long or too short grinding time, too high or too low temperature and pressure may lead to unsatisfactory results.
  4. The skill level and experience of the operator will also have an impact on the selective grinding process. Skilled operators can adjust the process parameters in time according to different situations to ensure the stability and reliability of the process.
ball mill

To sum up, raw material characteristics, grinding equipment performance, process parameters and operator level and other factors, are in different degrees affect the selective grinding process. Zhongya Machinery fully aware of the importance of these factors, research and development of the production of ball mills, rod mills and other models and constantly optimised to improve the efficiency and quality of the selective grinding process.