NICKEL ELECTROLYTIC PRODUCTION METHOD Russian patent published in 2005 - IPC

FIELD: non-ferrous metallurgy, namely electrolytic production of nickel.

SUBSTANCE: method of electrolytic production of nickel by electrolysis of nickel from nickel electrolytes at adding surface active matter such as sulfonates (alkan- and alkyl aromatic acids salts) is realized at using as surface active matter "Sulphonol-P" (mixture of sodium salts of alkyl benzenesulfonic acids on base of n-paraffins C_nH_2n+1-C₆H₄-SO₃Na where n = 10 - 13) supplied as aqueous solution with concentration 5 -10 kg/m³ to preliminarily cleaned from impurities nickel electrolyte (catholyte). When electrolysis of nickel is realized at using sulfate-chloride electrolyte and soluble nickel anodes, said mixture is supplied to electrolyte in quantity providing concentration of surface - active matter in it 4 - 5 g/m³. When electrolysis of nickel is realized at using sulfate electrolyte and non-soluble nickel anodes above mentioned mixture is supplied to electrolyte in quantity providing concentration of surface active matter in it 40 - 60 g/m³.

EFFECT: lowered consumption of surface-active matter, simplified technique of preparing and metering surface-active matter, reduced separation of nickel aerosols to air of working zone of electrolysis bathes, increased cathode electric current yield.

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