Experimental study of charge dynamics in a laboratory-scale ball mill
Experimental study of charge dynamics in a laboratory-scale ball mill
复制标题
实验室规模球磨机中电荷动力学的实验研究
DOI：
10.1177/0954406217738031
复制
发表时间：
2018-10
期刊：
影响因子：
--
通讯作者：
Jie Xu
中科院分区：
文献类型：
--
作者：
Zixin Yin;Yuxing Peng;Zhencai Zhu;Zhangfa Yu;Tongqing Li;Lala Zhao;Jie Xu
为了理解和描述米尔斯中的电荷动力学行为，在实验室规模的球磨机上进行了一系列干磨和湿磨试验。实验结果与研磨介质轨迹模拟结果进行了比较。结果表明，磨削介质轨迹模拟与实验结果吻合较好。台肩角与磨机速度和球填充成正比。前束角与钢球填充量成反比，而撞击点角与钢球填充量无关，与磨机转速成反比。通过对物料的运动分析，得出当钢球填充率在20%~ 40%，磨机转速在70%~ 80%时，可获得较好的粉磨效率。对干法试验，正交分析表明，四个因素对粉质比的影响大小顺序为：装球量、磨机转速、粉磨介质比和提升器型面;四个因素对-0.074 mm成品率的影响大小顺序为：磨机转速、装球量、粉磨介质比和提升器型面。最佳干式试验条件为：临界转速70%、装球率20%、粉磨介质比0.8、波形提升器。相应地，功率质量比可以提高28.27%，-0.074 mm的产量可以提高50.38%。对于湿试验，-0.074 mm屈服对磨机速度和含水量的变化增加到最大值，然后迅速下降。当磨机转速为80%、含水率为50%时，-0.074 mm的产量最大。
To understand and describe the behavior of charge dynamics in mills, a series of dry and wet grinding tests were performed on a laboratory-scale ball mill. The comparisons between experimental results and grinding media trajectory simulations were addressed. Results show that the grinding media trajectory simulations exhibit a good agreement with the experimental results. The shoulder angle was proportional to mill speed and ball filling. The toe angle was inversely proportional to ball filling, but the impact point angle was appeared to invariant to ball filling and inversely proportional to mill speed. By means of motion analysis of the charge, a good grinding efficiency can be obtained when the ball filling ranging from 20% to 40% and the mill speed ranging from 70% to 80%. For dry tests, the orthogonal analysis indicates that the influence order of four factors on power-mass ratio is ball filling, mill speed, powder-grinding media ratio and lifter profile and the influence order of four factors on −0.074 mm yield is mill speed, ball filling, powder-grinding media ratio and lifter profile. The best dry tests are a combination of 70% of critical speed, 20% of ball filling, 0.8 of powder-grinding media ratio and waveform lifter. Correspondingly, the power-mass ratio can increase by 28.27% and the production of −0.074 mm can increase by 50.38%. For wet tests, the variations of −0.074 mm yield on mill speed and moisture content increase up to a maximum and then decrease rapidly. The −0.074 mm yield can reach a maximum at the 80% of mill speed and 50% of moisture content.
登录
查看更多内容
影响因子：
4.8
作者：
Delaney, G. W.;Cleary, P. W.;Loveday, B.
通讯作者：
Loveday, B.
DOI：
10.2472/jsms.28.815
发表时间：
2009
期刊：
--
影响因子：
--
作者：
Yoshiteru;Kanda
通讯作者：
Yoshiteru;Kanda
DOI：
10.1016/0148-9062(94)93077-5
发表时间：
2003
期刊：
--
影响因子：
--
作者：
M. Moys
通讯作者：
M. Moys
影响因子：
4.8
作者：
N. Weerasekara;Lian X. Liu;M. Powell
通讯作者：
N. Weerasekara;Lian X. Liu;M. Powell
影响因子：
4.8
作者：
Gangquan Si;Hui Cao;Yanbin Zhang;Lixin Jia
通讯作者：
Gangquan Si;Hui Cao;Yanbin Zhang;Lixin Jia