从酸性淋洗液中萃取提金  

Recovery of Gold from Acid Leaching Solution by Solvent Extraction

作　　者：柳林[1,2,3,4] 王威 孙启亮[1,2,4] 刘红召 张博[1,2,3,4] 刘磊 LIU Lin;WANG Wei;SUN Qi-liang;LIU Hong-zhao;ZHANG Bo;LIU Lei(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources,CAGS,Zhengzhou 450006,China;China National Engineering Research Center for Utilization of Industrial Minerals,Zhengzhou 450006,China;Comprehensive Utilization Key Laboratory of Gold Resource in Henan Province,Zhengzhou 450006,China;Key Laboratory of Evaluation and Multipurpose Utilization of Polymetallic Ore of Ministry of Land and Resources,Zhengzhou 450006,China)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,郑州450006 [2]国家非金属矿资源综合利用工程技术研究中心,郑州450006 [3]河南省黄金资源综合利用重点实验室,郑州450006 [4]国土资源部多金属矿评价与综合利用重点实验室,郑州450006

出　　处：《有色金属（冶炼部分）》2019年第12期39-43,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：河南省科技攻关项目（182102311075）;中国地质调查局地质调查项目（DD20190186）

摘　　要：某黄金冶炼渣经过高温氯化焙烧处理,金以氯化物的形式挥发到烟尘中,后续被冷却塔喷淋收集,获得金含量1.21 mg/L的酸性淋洗液。采用溶剂萃取的方法回收酸液中的金,研究了萃取剂种类、萃取剂浓度、相比、温度、时间对金萃取率的影响。结果表明:以浓度90%的二丁基卡必醇为萃取剂,在常温、相比O/A=1/4、1600 r/min振荡10 min后金的萃取率可达到99.01%,再用草酸进行反萃可制得海绵金产品。During high temperature chlorination roasting of gold smelting slag,gold was volatilized into dust in the form of chloride.The dust was sprayed in cooling tower to form acid leaching solution with gold concentration of 1.21 mg/L.Gold was recovered from acid leaching solution with solvent extraction.Effects of extractant types,extractant concentration,extraction ratio,extraction temperature and time on gold extraction rate were discussed.The results show that gold extraction rate is 99.01%under the conditions including extractant concentration of dibutyl carbitol of 90%,O/A=1/4,room temperature,oscillation rate of 1600 r/min,and time of 10 minutes.Sponge gold can be obtained by stripping with oxalic acid.

关 键 词：黄金冶炼渣 氯化焙烧 酸性淋洗液 萃取提金 二丁基卡必醇 

分 类 号：TF831[冶金工程—有色金属冶金]