球磨工艺对Mg_2SiO_4合成及其粉碎粒度影响

Effect of Ball Milling Technology on Synthesis of Mg_2SiO_4 and Its Crushed Particle Size

采用固相法合成了纯相Mg2SiO4,并研究了250ml、1000ml球磨罐以及不同的球磨内衬对原料Mg/Si比和球磨时间的影响。实验结果表明,采用橡胶内衬的球磨罐球磨效率要小于陶瓷内衬的球磨罐;1000ml球磨罐的球磨效率要低于250ml球磨罐的球磨效率。采用250ml球磨罐,V料:V水:V球=1∶2∶1,转速为180r/min,对合成的Mg2SiO4粉体球磨粉碎效率进行研究。实验结果表明,在一定球磨时间内,Mg2SiO4粉料粒度分布随时间延长变窄;但球磨时间越长,球磨效率越低,最佳的球磨时间为12h。

Mg2SiO4 was prepared by solid state synthesis process, and the effects of 250ml/1000ml ball mill tank with ceramic or rubber lining on Mg/Si and ball-milling time were studied. The result showed that the milling efficiency of ball mill tank with rubber lining was lower than that of ceramic lining, and the milling efficiency of 1000ml ball mill tank was lower than that of 250m1. The prepared Mg^iO4 was crushed by 250ml ball mill tank with V料：V水：V球=1：2：1 at 180 r/min. The result showed that with the increase of ball milling time, the particle size of Mg2SiO4 decreased and the particle size distribution narrowed. But the longer the ball milling time the lower the efficiency of ball milling. It was suggested that the optimal ball milling time was 12h.