The ball mill is very important equipment in the process of grinding and classification in Baoshan Mining Co. as well as its energy consumption is the most in the whole plant. Its energy consumption generally accounts for 50%~70% of that of the whole plant. It is of great significance for saving energy consumption to use rolling bearing instead of sliding bearing on ball mill. At present, the five series of secondary mills are transformed and installed with two sets of rolling bearings as well as the operation effect is better so far. The comprehensive energy consumption saving is over 10%, annual electricity fee is saved by about RMB 0.44 million Yuan through comparing the electric current before and after transformation. Moreover, the roughness could be avoided and a lot of lubricating oil could be saved.

sliding bearing  /  rolling bearing  /  service life  /  energy consumption