银多金属矿浮选尾矿回收技术研究

Research on Flotation Tailing Recovery Technology of Silver Polymetallic Ore

随着人类对矿山的持续开发的脚步,其周遭的生态环境破坏的日益严重,对矿山废水的回收处理技术受到越来越多的研究者关注。同时,矿山企业对生产用水也需要进行综合回收利用,实现清洁生产。这就需要对矿山浮选后的尾浆废水进行有效处理。而有色金属矿物加工过程中产生的废水含有以下物质的复杂混合物Fe^(2+)、Fe^(3+)、Cu^(2+)、Cd^(2+)、Zn^(2+)、Mn^(2+)、Sn^(2+)、Pb^(2+)、Al^(3+)、Ni^(2+),主要存在浮选后尾浆废液出现胶粒化难以沉降,后续压滤困难,废水回用率不高等问题。目前为止,这些问题仍然是全球整个有色金属采矿业中的普遍级难题。本文回顾总结了近些年来对银多矿山浮选后的尾浆废水的回收工艺方法,包括中和沉淀法、硫化沉淀法、离子交换法以及絮凝剂的应用。

With the continuous development of mines,the damage to the surrounding ecological environment is increasingly serious,and more and more researchers have paid attention to the recycling and treatment technology of mine wastewater.At the same time,mining enterprises also need to comprehensively recycle production water to achieve clean production.This requires effective treatment of the tailing wastewater after flotation in the mine.However,the wastewater generated during the processing of non-ferrous metal minerals contains complex mixtures of Fe^(2+),Fe^(3+),Cu^(2+),Cd^(2+),Zn^(2+),Mn^(2+),Sn^(2+),Pb^(2+),Al^(3+),Ni^(2+),etc.,which mainly has problems such as difficult to settle after flotation of the tailing slurry waste liquid,difficulty in subsequent pressure filtration,and low wastewater reuse rate.So far,these problems remain common problems in the entire non-ferrous metal mining industry worldwide.This paper reviews and summarizes the recovery process methods of tailing wastewater after flotation in silver polymetallic ore in recent years,including neutralization precipitation method,vulcanization precipitation method,ion exchange method and application of flocculant.