摘要
针对某大型铜锌锡矿硫化矿浮选作业存在的问题开展浮选流程的优化研究.在工艺矿物学分析的基础上,结合现场生产浮硫尾矿硫砷含量超标致使锡精矿有害杂质过高的现状,确定了磁选除铁—优先浮铜—锌硫砷混浮—锌与硫砷分离的工艺.在确定工艺流程过程中对磨矿细度、浮选药剂制度进一步优化.优化后的浮选流程在原矿含Cu 0.06%、Zn 0.36%的条件下,得到了含Cu16.37%、Zn 7.92%,铜回收率为68.302%的铜精矿以及含Zn 44.44%,锌回收率76.368%的锌精矿,实现了对极低品位的伴生金属的回收.而且优化后的硫化矿浮选流程对硫砷脱除效果更佳,有利于后续锡石重选效率的提高.
According to the situation that current floatation process failed to synthetically recover associated metals, the optimization study of floatation process was conducted. Based on process mineralogy analysis, combined with the situation that the exceeding standard of sulfur and arsenic in floatation tailings may result in the excessive harmful impurities in tin concentrate, a new technological process which includes magnetic separation for deironing, Cu differential flotation, zinc-sulfur-arsenic mixed floatation and finally, zinc-sulfur arsenic separation is proposed. Besides, the study further optimized the grind fineness and reagents rules in the beneficiation process. While the raw ores containing 0.06 % of Cu and 0.36 % of Zn, the copper concentrate containing 16.37 % Cu and 7.92 %Zn with the recovery rate of Cu of 68.302 % and zinc concentrate containing 44.44 % Zn with the recovery of Zn of 76.368 % were obtained after the optimized process, which realized the recovery of low-grade associated metals. Moreover, the sulfur and arsenic removing efficiency of the optimized floatation process is better, which is conducive to next-step improvement of cassiterite gravity efficiency.
出处
《有色金属科学与工程》
CAS
2016年第1期89-95,共7页
Nonferrous Metals Science and Engineering
基金
科研院所专项基金(2010EG115069)
关键词
锡石重选
伴生金属
优先浮铜
流程优化
cassiterite gravity concentration
associated metals
Cu-preferential flotation
process optimization
作者简介
通信作者：陈代雄（1963-），男，教授级高工．主要从事选矿及选矿尾矿综合利用方面的研究，E-mail：chendaixiong888@163．com
