白云石的湿法超细粉碎工艺研究

为对白云石进行超细粉碎,利用介质搅拌磨对白云石的湿法超细粉碎工艺进行优化研究。通过对白云石湿法超细粉碎过程中主要工艺参数的优化研究,确定白云石湿法超细粉碎最佳工艺参数。结果表明:当助磨剂为聚丙烯酸钠,用量为白云石质量的0.5%,料浆中物料的质量分数为60%,球料质量比为5∶1,累积研磨时间为3~4h,转速为1200r/min,在此工艺条件下研磨4h后,其d50=0.70μm,d97=1.97μm。

Superfine Grinding of Dolomite Powder in Wet Mode

The superfine grinding parameters of dolomite in wet by a stirred mill was optimized. The optimal parameters of superfine grinding dolomite were determined. The results showed that the grinding agent was polyacrylate whose mass fraction was 0.5%, the slurry concentration was 60%, the mass ratio of ball and powder was 5∶ 1, and the grinding time and rotation speed were 3~4 h and 1 200 r/min, respectively. Under the optimal conditions, the particle size distribution of obtained dolomite powder was d50=0.70 μm and d97=1.97 μm when it was ground for 4 h.