玲珑金矿井下上部中段氧化程度较深低品位残矿浮选工艺研究与实践

Research and Practice on the Flotation Process for Dealing with Deeper Oxidative Low-grade Residual Ore from Downhole Upper Middle of Linglong Gold Mine

为有效地利用矿山资源,实现矿山企业利益的最大化,对进入玲珑选冶厂选矿工艺中的各类矿石开展单独浮选及配矿浮选的试验研究。研究表明,在现行的技术经济条件下,用浮选法处理玲珑金矿井下上部中段氧化程度较深的低品位残矿是可行的;采用现行的浮选工艺,在处理上部中段回收的氧化程度较深的低品位残矿时,当进入选矿流程的残矿数量小于进入流程总矿量的30%时,浮选指标不受影响。2011年,将该项研究成果应用于生产实践,全年共处理残矿27.3×104t,处理残矿的品位为1.1×10-6,所得精矿品位为76.89×10-6,浮选回收率为95.26%,当年企业获利5 000万元,取得了巨大的经济效益。

In order to utilize mineral resources effectively and maximize the benefits,research of separation flotation and ore blending flotation to various types of ores which fed into the process of Linglong concentration plant was introduced in this paper.And the results showed that under the current conditions of technique and economy it was feasible for this flotation method to deal with highly-oxidized low-grade residual ore from upper middle.By using the current flotation technology,the flotation index would not be affected if the amount of residual ore fed into the flotation circuit was less than 30 percent of the total amount of ore.The research findings were applied to actual production in the year of 2011 ,the number of the processed residual ore was 273 thousands tons, the grade of residual ore was 1.1×10-6 and the grade of concentrate was 76.89×10-6, and the flotation recovery rate was 95.26%.Tremendous economic benefits of more than 50 million yuan was obtained in that year.