Ball Mill grinding is a continuation of the crushing process, and is the last process of the ore before the sorting process.Grinding operation is to obtain fine or ultrafine grain products. The purpose of a ball mill grinding ore is to make all or most useful component reach monomer separation.At the same time, should try to avoid "excessive grinding" phenomenon. And it can meet requirements of particle size, so as to choose useful mineral from the ore composition. According to actual condition to join for lubricating oil, most enterprises don’t have clear concept. Ball mill equipment manufacture reminds all users according to actual condition of the machinery to join the right amount of lubricating oil, in order to have better maintenance of mineral processing equipment.

Needling preparation equipment in opening mine operations,  there exists  big change between summer and winter temperature, so it needs the lubricating oil viscosity become smaller to change with temperature, and also needs to avoid viscosity becoming high in the low temperature, so that the start and operation have difficulties. And it also needs to avoid in high temperature, oil viscosity is too low, so can't form lubricant film, and not play a role of lubrication. Mining machine volume and the volume of tank are generally small, so it has the less amount of lubricating oil on the outside, but the working oil temperature is higher, so the lubricating oil has good thermal stability and oxidation resistance. Because mining conditions is so bad with much rock dust and water, and lubricating oil is polluted by these impurities, so the lubricating oil is required to have good rust and corrosion resistance, and the performance of resistance to emulsifying.