Comminution Behavior of Using Cast Iron Segment as Fine Grinding Media
This paper presents an analysis of comminution behavior of using cast iron segment (CIS) as fine grinding media with comparison to conventional steel ball. Grinding experiments utilize just one-size medium and mixed size media in laboratory were carried out and its efficiency is expected to be improved.The results show that no matter whether one-size medium or mixed size media employed, grinding efficiency of CIS media can be considerably equal to that of steel ball, on the other hand, grinding product by two kinds of media can conform to Robin-Rammlers size characteristic curve and distribute in function of y = 100exp(-bxn).Comparing with steel ball, the milling capacity with CIS media could be increased up to about 8.6 percent, overcomminution decreased 3.96 in percentage and qualified size increased 3.98 in percentage in case of grinding fineness retained. At the same time, due to the improvement of grinding product size characteristic and its metal distribution characteristic, the grade and recovery of easy to separation size increased 0.24 in percentage and 6.47 in percentage respectively. Based on these results, the CIS media can be employed as novel fine medium for grinding process substituting for steel ball.
Comminution Cast iron segment(CIS) Steel ball Fine grinding media Size characteristic curve Grinding product size characteristic
C. B. Wu S. L. Xiang P. Chen X. X. Duan
Department of environmental engineering East China Jiaotong University, Nanchang, China Department of mineral processing, Kunming University of Science & Technology, Kunming, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
588-593
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）