How can we ensure the normal operation of Raymond Mill in daily operation? Here, we summarize three Raymond mill operating principles, which are simply summarized as "uniform ore feeding, large sand return and high concentration".  Correctly following these three operating guidelines can prolong the service life of Raymond mill and help to achieve ideal grinding effect.  Raymond mill operation guideline 1: what is "uniform ore feeding"? "Uniform ore feeding" here contains two meanings: one is to ensure uniform ore feeding particle size; The second is to ensure that the ore feeding speed (ore quantity fed into Raymond Mill per unit time) is constant.  Blindly increasing the feed rate will lead to coarsening the particle size of grinding products and increasing the amount of returned sand.