氢氧根与硫氢根协同效应对胺法浮选异极矿的影响  

Effect of Synergism between Hydroxy Radical and Sulfhydryl Radical on the Amine Flotation of Hemimorphite

作　　者：陈晔 陈建华[1] 吴伯增[2] 穆枭[1] 魏宗武[1] 

机构地区：[1]广西大学 [2]华锡集团车河选矿厂

出　　处：《金属矿山》2009年第3期65-68,共4页Metal Mine

摘　　要：针对难选异极矿的浮选特点,通过纯矿物浮选、红外光谱测试和实际矿石浮选研究了异极矿浮选中氢氧根离子和硫氢根离子之间的协同效应。研究结果表明,硫化钠中氢氧根离子和硫氢根离子在异极矿的浮选中都具有活化异极矿的作用,但氢氧根离子对矿物活化的选择性和效果不如硫氢根离子,在pH=9～11之间,氢氧根离子和硫氢根离子具有明显的协同效应,提高了异极矿的回收率,降低了硫化钠的活化浓度。实际矿石浮选试验结果证实了纯矿物试验的结论,在减少一半硫化钠用量的条件下,通过添加氢氧化钠可以获得较好的硫化胺工艺浮选异极矿的指标。In light of the characteristics of refractory hemimorphite flotation, the synergistic effect between hydroxy radical and sulfhydryl radical in the process of hemimorphite flotation is studied by flotation of pure minerals and actual ores as well as infrared-spectrum tests. The results show that hemimorphite can be activated by both hydroxy radical or sulfhydryl radical dissociated from sodium sulfide, and the selectivity and effect of hydroxy radical is inferior to sulfhydryl radical in the selectivity and effect of bemimorphite activation. Hydroxy radical and sulfhydryl radical have an obvious synergistic effect at pH 9 - 11, improving the recovery of hemimorphite and reducing the activation concentration of sodium sulfide. These conclusions are further confirmed by the test results of actual ores. Good flotation performance of hemimorphite ore can be obtained using sodium sulfide at a half-reduced amount.

关 键 词：异极矿 氢氧化钠 硫化钠 协同效应 

分 类 号：TD952.3[矿业工程—选矿] TU56[建筑科学—建筑技术科学]