黑铜泥浸出工艺研究
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摘要
以铜冶炼黑铜泥为原料,研究氧化酸浸和氧化碱浸过程的酸/碱过量系数、反应温度、液固比、通氧气量、搅拌速度等因素对Cu、As浸出率的影响规律,并确定了最佳的工艺条件。结果表明,黑铜泥氧化酸浸Cu、As浸出率分别为93.15%和94.74%;氧化碱浸As浸出率为90.27%。黑铜泥氧化浸出工艺实现了Cu、As与其他有价金属的有效分离。
Effects of acid/alkali concentration,reaction temperature,L/S,oxygen partial pressure,and stirring rate on leaching rates of copper and arsenic were studied with black copper sludge as raw material. The results show that under the optimum technological conditions,leaching rates of copper and arsenic by oxiditive acid leaching were 93. 15% and 94. 74%,respectively,and arsenic leaching rate by oxiditive alkali leaching was 90. 27%. The effective separation of copper and arsenic from other valuable metals was realized by oxiditive leaching process of black copper sludge.
Effects of acid/alkali concentration,reaction temperature,L/S,oxygen partial pressure,and stirring rate on leaching rates of copper and arsenic were studied with black copper sludge as raw material. The results show that under the optimum technological conditions,leaching rates of copper and arsenic by oxiditive acid leaching were 93. 15% and 94. 74%,respectively,and arsenic leaching rate by oxiditive alkali leaching was 90. 27%. The effective separation of copper and arsenic from other valuable metals was realized by oxiditive leaching process of black copper sludge.
引文
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[2]RANJBAR A R,NADERI M,OMIDVAR H,et al.Gold recovery from copper anode slime by means of magnetite nanoparticles(MNPs)[J].Hydrometallurgy,2014(43):54-59.
[3]王胜,张胜全.铜冶炼烟灰碱浸渣氨浸工艺[J].有色金属科学与工程,2015,6(6):20-23.
[4]LI Y H,LIU Z H,LI Q H,et al.Alkaline oxidative pressure leaching of arsenic and antimony bearing dusts[J].Hydrometallurgy,2016,166:41-47.
[5]GUO X Y,YI Y,SHI J,et al.Leaching behavior of metals from high-arsenic dust by Na OH-Na2S alkaline leaching[J].Trans.nonferrous met.soc.China,2016,26(2):575-580.
[6]YASIN KILIC,GULDEM KARTAL,SERVET TIMUR.An investigation of copper and selenium recovery from copper anode slimes[J].International journal of mineral processing,2013,124:75-82.
[7]吴玉林,徐志峰,郝士涛.炼铜烟灰碱浸脱砷的热力学及动力学[J].有色金属(冶炼部分),2013(4):3-7.
[8]陈文波,鲁兴武,李俞良,等.铜冶炼电收尘烟灰浸出渣脱砷工艺研究[J].无机盐工业,2016,48(5):48-50.
[9]曹军超,左淮书.黑铜除砷生产实践[J].中国有色冶金,2014,43(3):17-20.
[10]朱纪念,张晗.铜电解黑铜渣处理工艺应用研究[J].世界有色金属,2014(10):32-34.
[11]胡斌,姚金江,王智友,等.含砷烟灰脱砷现状[J].湖南有色金属,2013,29(5):41-44.
[12]刘永平.黑铜泥氧压酸浸工艺研究[J].有色金属(冶炼部分),2015(12):13-16.
[13]王玉棉,刘启武,冯福山,等.黑铜泥碱性浸出工艺及机理探讨[J].兰州理工大学学报,2011,37(2):5-8.
[14]王玉棉,周兴,黄雁,等.黑铜泥酸性浸出及铜砷分离研究[J].兰州理工大学学报,2011,37(6):19-22.
[15]周兴,黄雁,王玉棉,等.用黑铜泥制备砷酸钠和焦锑酸钠[J].甘肃冶金,2012,34(1):1-3.
[16]沈忱,闵小波,史美清,等.砷滤饼的铜砷分离[J].中国有色金属学报,2017,27(2):356-362.