安宁矿业分公司为了改善磷矿磨矿产品的粒度组成,通过实验室实验对球磨机钢球充填率及级配进行研究,探究合理的钢球添加方案。结果表明,适宜的球磨机钢球充填率为38%,适宜的钢球级配为m(50mm)∶m(40 mm)∶m(30 mm)=30∶45∶25;适宜的钢球充填率及级配,能减轻矿石过磨,提高磨机效率和产能,节约钢球消耗量和药剂用量,为后续的选别作业提供合格的入选产品。 Anning Mining Branch in order to improve the particle size of phosphate rock products, through laboratory experiments on the ball mill ball filling rate and grading to explore reasonable ball addition program. The results show that the ball loading rate of the suitable ball mill is 38%, and the suitable ball grade is m (50mm): m (40 mm): m (30 mm) = 30:45:25. And grading, can reduce ore over grinding, improve the efficiency and capacity of the mill, saving steel ball consumption and dosage, for the follow-up sorting operations to provide qualified selected products.