镓锗铜萃余液综合回收工艺流程设计与完善  

Design and improvement of the comprehensive recovery process flow of Ga-Ge-Cu raffinate

作　　者：吴才贵 张伟 WU Cai-gui;ZHANG Wei(Danxia Smelter,Shenzhen Zhongjin Lingnan Nonfemet Co.Ltd.,Shaoguan 512300,Guangdong,China;Shaoguan Engineering Technology R&D Center of Rare and Precious Metals Comprehensive Recovery,Shaoguan 512300,Guangdong,China)

机构地区：[1]深圳市中金岭南有色金属股份有限公司丹霞冶炼厂,广东韶关512300 [2]广东省韶关市稀贵金属综合回收工程技术研究开发中心,广东韶关512300

出　　处：《矿冶》2020年第3期58-61,122,共5页Mining And Metallurgy

基　　金：国家重点研发计划项目(2018YFC1900404);国家科技支撑计划项目(2015BAB02B03)。

摘　　要：针对湿法炼锌镓锗铜综合回收系统产出的萃余液,根据溶液含有锰、镉、钴、锌、钠、砷、铝、铁等元素的特点,工艺流程设计采用中和氧化除砷铝铁锰、锌粉置换除镉、有机试剂除钴镍、纯碱法生产工业碱式碳酸锌、高温煅烧生产工业活性氧化锌和一步法生产工业无水硫酸钠,将镓锗铜萃余液中有价离子元素分步分离、富集回收,最终可产出含Cd>20%的除镉渣、含Co>1.2%,Ni>1%的钴镍渣,符合化工行业标准HG/T 2523—2016的工业碱式碳酸锌,符合化工行业标准HG/T 2572—2012的工业活性氧化锌,以及符合国家标准GB/T 6009—2014的工业无水硫酸钠产品,进一步完善了综合回收工艺流程。In this paper,according to the characteristics of the raffinate produced by the zinc hydrometallurgy comprehensive recovery system of Ga-Ge-Cu,which contains Mn,Cd,Co,Zn,Na,As,Al and Fe,etc.,the technological process design adopts neutralization oxidation elimination of As,Al,Fe and Mn,replacement of Cd with zinc powder,removal of Co Ni by organic reagent,soda ash method for producing industrial basic zinc carbonate,high-temperature calcination for producing industrial active zinc oxide and one-step production process for industrial anhydrous sodium sulfate.Cadmium residue containing Cd>20%,cobalt-nickel residue containing Co>1.2%and Ni>1%can be obtained from the separation and enrichment of valuable ion elements from Ga-Ge-Cu raffinate.The industrial basic zinc carbonate meets the standard HG/T 2523-2016.The industrial active zinc oxide and industrial anhydrous sodium sulfate,which meets the standard HG/T 2572—2012,and the national standard GB/T 6009—2014 can be produced,respectively.

关 键 词：综合回收 萃余液 有机试剂 工业碱式碳酸锌 工业活性氧化锌 

分 类 号：TF803.27[冶金工程—有色金属冶金]