Dutta, R K and Banerjee, T (1951) Recovery of nickel and zinc from Silver refinery waste liquid - Part II (Chemical Method). Other (TMP). CSIR-NML, Jamshedpur, Jamshedpur.
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A method for recovery of nickel oxide from silver refinery waste liquid having the composition nickel sulphate - 2 gm, zinc sulphate - 2 gm sulphuric acid - 3.6 gm in an aqueous solution of 100 ml has been developed. The method consists in adding the neutral solution of the above mixture (neutralized by caustic soda) to a sodium hypochlorite solution containing an excess of sodium hydroxide with a constant stirring when nickelic oxide is precipitated and a soluble sodium zincate is formed. The filtrate contains almost all the amount of zinc free from nickel and the residue is nickelic oxide to the extent of Ni : Zn = 95:5.
|Item Type:||Project Reports (Other (TMP))|
|Uncontrolled Keywords:||Silver refinery waste liquid ,recovery of nickel and zinc, caustic soda, sodium zincate ,nickelic oxide|
|Divisions:||Information Management and Dissemination Centre|
|Deposited By:||Dr Mita Tarafder|
|Deposited On:||17 Feb 2022 16:06|
|Last Modified:||09 Jun 2022 14:25|
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