霓石溶出金属离子对镜铁矿、霓石可浮性的影响
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摘要
为了研究霓石表面溶出离子Fe~(3+)、Na~+对十二胺体系中镜铁矿和霓石可浮性的影响,以0.044～0.074 mm粒级镜铁矿和霓石单矿物为研究对象,进行单矿物浮选试验,并通过Zeta电位测量和溶液化学计算研究其作用机理。结果表明:十二胺对镜铁矿和霓石均具有较好的捕收作用;Fe~(3+)对镜铁矿的抑制效果强于霓石,Na~+对2种矿物可浮性均无明显影响;加入Fe~(3+)、Na~+均能使镜铁矿和霓石矿物表面电位发生右移,表面电位升高减弱了十二胺在矿物表面的静电吸附;Fe~(3+)主要以亲水性Fe(OH)_3沉淀形式吸附在矿物表面,使矿物亲水性增大,从而对矿物产生抑制作用。
In order to research the effect of Fe~(3+) and Na~+ dissolved from aegirite on the flotation of specularite and aegirite in dodecylamine system,single mineral flotation experiment was carried out with 0.044～0.074 mm size fraction minerals of specularite and aegirite. The mechanism was analyzed from views of Zeta potential measurement and solution chemical calculation. The results showed that dodecylamine had a good effect on the collection of specularite and aegirite,while Fe~(3+) showed a stronger inhibitory effect on specularite than that of aegirite,and Na+had no significant depression effect on the floatability of these two minerals. The added Fe~(3+) and Na~+ right shifted the surface potential of these two minerals,which wakened the electrostatic adsorption of dodecylamine. Fe~(3+) adsorbed on the surface of these two minerals mainly in the form of hydrophilic hydroxide precipitation,which increased the hydrophilicity of specularite and aegirite and inhibited their floatability.
In order to research the effect of Fe~(3+) and Na~+ dissolved from aegirite on the flotation of specularite and aegirite in dodecylamine system,single mineral flotation experiment was carried out with 0.044～0.074 mm size fraction minerals of specularite and aegirite. The mechanism was analyzed from views of Zeta potential measurement and solution chemical calculation. The results showed that dodecylamine had a good effect on the collection of specularite and aegirite,while Fe~(3+) showed a stronger inhibitory effect on specularite than that of aegirite,and Na+had no significant depression effect on the floatability of these two minerals. The added Fe~(3+) and Na~+ right shifted the surface potential of these two minerals,which wakened the electrostatic adsorption of dodecylamine. Fe~(3+) adsorbed on the surface of these two minerals mainly in the form of hydrophilic hydroxide precipitation,which increased the hydrophilicity of specularite and aegirite and inhibited their floatability.
引文
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[4]Fan X,Rowson N A.The effect of Pb(NO3)2on ilmenite flotation[J].Minerals Engineering,2000,13(2):205-215.
[5]艾光华,蔡鑫,毕康颖,等.金属离子对矿物浮选行为影响的研究进展[J].有色金属科学与工程,2017,8(6):70-74.Ai Guanghua,Cai Xin,Bi Kangying,et al.Research progress on the effect of metal ions on mineral flotation behavior[J].Nonferrous Metals Science and Engineering,2017,8(6):70-74.
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[7]李晔,雷东升,许时.矿浆中金属离子对硅线石与石英浮选分离的影响[J].硅酸盐学报,2002(3):362-365.Li Ye,Lei Dongsheng,Xu Shi.Effect of metal ions in pulp on flotation separation of sillimanite from quartz[J].Journal of the Chinese Ceramic Society,2002(3):362-365.
[8]张晋霞,冯雅丽,牛福生.矿浆中金属离子对蓝晶石矿物浮选行为的影响[J].东北大学学报:自然科学版,2014,35(12):1787-1791.Zhang Jinxia,Feng Yali,Niu Fusheng.Influence of metal ions in pulp on floatability of kyanite minerals[J].Journal of Northeastern University:Natural Science,2014,35(12):1787-1791.
[9]Fomasiero D,Ralaton J.Cu(II)and Ni(II)activation in the flotation of quartz lizardite and chlorite[J].International Journal of Mineral Processing,2005,76(1/2):75-81.
[10]崔瑞,聂新羽,兰星,等.Fe2+/Fe3+对水杨羟肟酸捕收铅矾的影响[J].金属矿山,2018(6):85-88.Cui Rui,Nie Xinyu,Lan Xing,et al.Effect of Fe2+and Fe3+on flotation of lead-alum with salicylhydroxamic acid as collector[J].Metal Mine,2018(6):85-88.
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