NiO/Fe_2O_3湿式行星球磨中的噪声能消耗与效率(英文)

Noisy-power dissipation and efficiency in NiO/Fe_2O_3 wet grinding by planetary ball mill

研究NiO/Fe2O3湿式混合与球磨过程中的噪声能消耗、球磨效率及二者之间的关系。结果表明,球磨工艺的最佳工艺参数为:填水率64.10%85.47%,小/大球个数比360/20,球磨机转速300.9 r/min,填粉率约10.88%,填球率20.53%23.88%,球磨时间6 h。引入离散元法（DEM）分析球磨过程中噪声能消耗与球磨效率之间的关系,得到噪声能消耗与填球率关系的经验方程。研究表明粉体的平均粒度随着噪声能的消耗而减小,而球磨效率和球碰撞能的利用率则随着噪声能消耗的增加而减小。

The relationship between the efficiency of NiO/Fe2O3 wet grinding and noisy-power dissipation was studied. The optimal grinding parameters were found as: a slurry water content of 64.10%-85.47%, ball number ratio of 360/20, revolution speed of 300.9 r/min, powder-filling ratio of 10.88%, ball-filling ratio of 20.53%-23.88%, and grinding time of approximately 6 h. The discrete element method(DEM) was employed to analyze relationship between the noisy-power dissipation and the grinding efficiency, and equations describing the relationship were derived. The mean particle size of the ground powder decreased with a decrease in the degree of noisy-power dissipation, while the grinding efficiency and the amount of specific impact power used decreased with an increase in the degree of noisy-power dissipation.