偶氮类有机抑制剂对硫化矿的抑制性能

来源期刊:中国有色金属学报2010年第11期

论文作者:陈建华 梁梅莲 蓝丽红

文章页码:2239 - 2247

关键词:偶氮类药剂;有机抑制剂;硫化矿;浮选试验;前线轨道能量

Key words:azo reagent; organic depressant; sulphide mineral; flotation test; frontier orbital energy

摘    要:考察偶氮类药剂对方铅矿、脆硫锑铅矿、铁闪锌矿、黄铁矿和黄铜矿的抑制作用。浮选试验结果表明:单偶氮类药剂对硫化矿无抑制作用,双偶氮药剂的抑制作用较弱或无抑制作用,三偶氮类药剂对硫化矿具有很强的抑制作用。偶氮类药剂的前线轨道能量计算及分子结构与抑制性能关系的分析表明:药剂与矿物的前线轨道能量差值可作为偶氮类药剂抑制性能的一个初步定量判据,偶氮类药剂的抑制性能取决于其分子结构。

Abstract: The depression effects of azo organic depressants on galena, jamesonite, marmatite, pyrite and chalcopyrite were investigated by flotation test. The flotation results indicate that single-azo compounds have no depression effect on sulphide minerals, the double-azo compounds have no or weak depression effect, and the triple-azo reagents have a good depression effect on sulfide minerals. The frontier molecular orbital energy calculation and analysis of relationship between molecular structure and azo reagents depressing effect indicate that the frontier orbital energy differences between reagents and minerals can be a preliminary quantitative analysis criterion. The depressing ability of azo reagents is determined by their molecular structures.

基金信息:国家自然科学基金资助项目

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