调浆气氛对黄铁矿浮选电化学性质影响研究  

A STUDY ON THE EFFECT OF CONDITIONING ATMOSPHERE ON THE FLOTATION ELECTROCHEMICAL PROPERTIES OF PYRITE

作　　者：窦增文 魏明安[1] 

机构地区：[1]北京矿冶研究总院矿物加工科学与技术国家重点实验室,北京102628

出　　处：《矿冶》2015年第3期22-24,29,共4页Mining And Metallurgy

基　　金：国家国际科技合作专项项目(2012DFG71060)

摘　　要：基于氧气在黄铁矿浮选电化学反应中的作用,考察了p H为4.00、6.86、9.18、10.01和10.96五种缓冲溶液浮选体系下,矿浆溶氧量(DO)对黄铁矿浮选矿浆电位(Eh)和回收率的影响。研究表明,五种缓冲溶液体系下,Eh均随着DO的增加而增加,碱性条件下DO对Eh的影响较小;浮选回收率随DO的增加呈下降趋势,碱性条件下回收率的变化较大。The effect of dissolved oxygen（DO） in the pulp on the pulp potential （Eh） and flotation recovery of pyrite were investigated. Five kinds of buffer solutions （ pH4.00, pH6.86, pH9. 18, pil10.01 and pill0.96） were used. Experimental results show that the Eh is enhanced with increasing DO and the influence is smaller under alkaline conditions. In addition, flotation recovery is decreased with increasing DO and the change is bigger for al- kaline conditions.

关 键 词：溶氧量 黄铁矿 矿浆电位 浮选回收率 

分 类 号：TD952[矿业工程—选矿]