铸铁段作为磨矿介质在冬瓜山铜矿的试验研究  

STUDY ON USING CAST IRON SEGMENTS AS GRINDING MEDIA IN DONGGUASHAN COPPER MINE

作　　者：邓禾淼[1] 肖庆飞[2,3] 李博[2,3] 康怀斌[2,3] 王周和 赵红芬[1] 

机构地区：[1]铜陵有色金属集团股份有限公司冬瓜山铜矿,安徽铜陵244031 [2]昆明理工大学国土资源工程学院,昆明650093 [3]省部共建复杂有色金属资源清洁利用国家重点实验室,昆明650093

出　　处：《矿冶》2015年第5期5-8,共4页Mining And Metallurgy

基　　金：云南省科技计划项目(2013FZ022)

摘　　要：以冬瓜山铜矿矿石为研究对象,运用精确化装补球技术,精确的计算出初装球的球径和球比,并根据质量相当的原则,用耐磨铸铁段替换钢球作为磨矿介质,最终确定了50 mm×60 mm∶35 mm×40mm∶30 mm×35 mm=30∶25∶45的球磨机初装比方案,然后通过普通钢球与耐磨铸铁段的对比试验来研究磨矿过程中铸铁段作为磨矿介质的磨矿效果。试验结果表明,在相同的磨矿条件下,铸铁段的中间易选级别比现场方案提高了13.43个百分点,过粉碎比现场方案降低了2.53个百分点,磨矿细度比现场方案提高了7.89个百分点,铸铁段可以取代钢球作为新型磨矿介质。Taking the ore from Dongguashan copper mine as the research object, the method of ＂accurate load- ing and addition of milling bails＂ was applied to calculate accurately the initial filling ball sizes and the proportion of each ball size. According to the mass match principle , the initial loading scheme of 50 mm × 60 mm： 35 mm × 40 mm： 30 mm × 35 mm = 30： 25：45 for the ball sizing was determined, and the contrast test of using cast iron seg- ments as grinding media to substitute steel balls were investigated. Results of the test indicated that under the same grinding condition the proportion of the middle size fraction in the grinding product increased by 13.43 percent points comparing to the current plant scheme, the over-grinding size fraction reduced by 2.53 percent points, and the grinding fineness increased by 7.89 percent points. It was shown that cast iron segments can replace steel bails as grinding media.

关 键 词：铸铁段 磨矿 段氏球径半理论公式 粒度组成 

分 类 号：TD921[矿业工程—选矿]