离子交换法脱除硫酸镍电解液中痕量铁
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摘要
采用大孔隙阳离子交换树脂Monophos脱除硫酸镍电解液中的痕量铁,通过正交试验和单因素试验考察了料液浓度、pH、脂液比、温度以及吸附时间对硫酸镍电解液中痕量铁以及镍离子吸附效果的影响。结果表明,影响痕量铁吸附效果主次因素顺序(由大到小)为:时间>pH>脂液比>温度>料液浓度。此外,脂液比是影响除铁率与镍损率的一个重要因素。经过4h的吸附,当脂液比为1∶6时,铁脱除率达到89%,镍损失率为13%;当脂液比为1∶12时,铁脱除率达到76%,镍损失率为7%。
Trace iron was removed from nickel sulfate electrolyte by macro-porous cation exchange resin with trade mark of Monophos.Effects of Ni concentration,pH value,ratio of resin to liquid volume(RR/L),temperature and adsorption time on adsorption of Fe and Ni were investigated by orthogonal experiments and single factor experiments.The results show that affecting sequence on Fe adsorption is from adsorption time,pH value,RR/L,temperature,to concentration.In addition,RR/Lis an important factor influencing both Fe removal rate and Ni loss rate.Fe removal rate is about 89% and Ni loss rate is about 13% after 4 hadsorption with RR/L=1∶6.Fe removal rate is about 76% and Ni loss rate is about7% after 4 hadsorption with RR/L=1∶12.
Trace iron was removed from nickel sulfate electrolyte by macro-porous cation exchange resin with trade mark of Monophos.Effects of Ni concentration,pH value,ratio of resin to liquid volume(RR/L),temperature and adsorption time on adsorption of Fe and Ni were investigated by orthogonal experiments and single factor experiments.The results show that affecting sequence on Fe adsorption is from adsorption time,pH value,RR/L,temperature,to concentration.In addition,RR/Lis an important factor influencing both Fe removal rate and Ni loss rate.Fe removal rate is about 89% and Ni loss rate is about 13% after 4 hadsorption with RR/L=1∶6.Fe removal rate is about 76% and Ni loss rate is about7% after 4 hadsorption with RR/L=1∶12.
引文
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[8]LIU M,ZHOU Y M.Removal of Fe(Ⅲ)from sulphate solutions by synergistic extraction using N235-TBP mixed solvent systems[J].Chinese Journal of Nonferrous Metals,2005,15(10):1648-1654.
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[10]POSPIECH B,WALKOWIAK W,WOZ'NIAK M J.Application of TBP in selective removal of iron(III)in solvent extraction and transport through polymer inclusion membranes[J].Physicochemical Problems of Mineral Processing,2005,39(1):89-98.
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[13]ZHANG K F,LIU Z Q,CAO H Y,et al.Removal of Fe3+from iron rich and high acidity sulfuric acid leaching liquid by extraction of N235[J].Chinese Journal of Nonferrous Metals,2015,25(5):1370-1377.
[14]陈松,王瑞忠,王文祥,等.N235萃取净化氯化镍溶液的有机相组成及其工艺的研究[J].矿冶工程,2001,21(1):56-58.
[15]曾理.酸性溶液中钼、钒、镍、钴的提取与分离研究[D].长沙:中南大学,2011.
[16]李洪桂.冶金原理[M].北京:科学出版社,2005:254-264.
[17]王菲,王连军,孙秀云,等.强酸性阳离子交换树脂对铅的吸附行为及机理[J].中国有色金属学报,2008,18(3):564-569.