Seperation & Recovery of Copper & Nickel from Copper Bleed Stream by Solvent Extraction Route
Seperation & Recovery of Copper & Nickel from Copper Bleed Stream by Solvent Extraction Route
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发表时间：
2002
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通讯作者：
Premchand
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作者：
A. Agrawal;S. Kumari;M. Manoj;B. D. Pandey;Vinay Kumar;D. Bagchi;Premchand
对来自铜电解槽的电解精炼步骤的排出流进行处理以将金属回收为高价值产品，例如铜和镍粉末或盐。的
该方法包括对排出流进行部分脱铜，然后结晶铜和镍硫酸盐的混合盐，
加盐、除铁、溶剂萃取分离铜和镍，得到溶液，生产金属粉末。利用部分脱铜的排出流，通过以下步骤获得复合晶体：
结晶含Cu 8.4 - 12.5%，Ni 13.7- 14.38%，Fe 1- 2 pptn为杂质。这种混合盐用水浸提并进行铁处理
降水使用LIX 84和CYANIX 272对纯化的溶液进行溶剂萃取，20%LIX 84在煤油中萃取99.88%铜和0.059%铜。
镍（如果在煤油中的2.5的ct p1 I和5%C）ANEX 272提取98.06%的铜和0.511的镍，则在p！我是4.85 1、L1' 84是usec！用于金属分离
固定器-销售器单元。从反萃回路获得的硫酸铜和硫酸镍的纯溶液被电解以产生纯铜（99.9%）和镍（99.8）粉末;或者纯硫酸盐也可以结晶。
Bleed stream from electro r(fining step of copper slnelter was processed to recover the metals as high value products such as copper and nickel powders or salts. The
process consists of partial decopperisation of the bleed stream followed by crystallisation of a ,nixed salt of copper and nickel sulphate, leaching of the mixed
salt, removal of iron, solvent extraction separation of copper and nickel and winning the solution to produce metal powders. With the partially decopperised bleed stream, the composite crystal was obtained by
crystallisation which contained 8.4 -12.5 % Cu and 13.7-14.38 % Ni with 1-2pptn Fe as impurity. This mixed salt was leached with water and was treated for iron
precipitation. The purified solution was subjected to solvent extraction using LIX 84 and CYANI X 272, A 20% LIX 84 in kerosene extracted 99.88% copper acrd 0,059%
nickel (if ct p1I of 2.5 and 5% C}'ANEX 272 in kerosene extracted 98,06% copper and 0.511, nickel at a p!I of 4.85. 1,L1' 84 was usec! for metal separation in the
,fixer-seiller unit. The pure solutions of copper and nickel sulphates obtained from stripping circuit were electrolysed to produce pure copper (99.9%) and nickel (99.8) powders; alternatively pure sulphate salts could also be crystallised.