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Method for producing low chlorine concentration mixed aqueous solution of nickel sulfate and cobalt sulfate
Method for producing low chlorine concentration mixed aqueous solution of nickel sulfate and cobalt sulfate
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机译：低氯浓度的硫酸镍和硫酸钴混合水溶液的生产方法
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摘要
PROBLEM TO BE SOLVED: To provide a manufacturing method of a mixed solution of NiSOand CoSOlow in chlorine concentration by adding sulfuric acid to a mixture containing at least Cl, Ni(OH)and Co(OH)and dissolving a solid component in the slurry, and removing contained chlorine constituent without specific cost increase and efficiency reduction.SOLUTION: There is provided a manufacturing method of a low chlorine concentration mixed solution of NiSOand CoSOfor obtaining a mixed solution of NiSOand CoSOlow in chlorine concentration by holding a temperature of a dissolution liquid for dissolving a solid component of the slurry at 60°C or higher, which is manufactured by adding a slurry making solution to a mixture containing at least 5 to 10 wt.% of Cl, 35 to 60 wt.% of Ni and 1 to 10 wt.% of Co to form concentration adjusted slurry having slurry concentration of 360 g/L or less and then adding sulfuric acid to the concentration adjusted slurry, and controlling pH of the dissolution liquid at 2.0 or less and dissolving the solid component of the slurry to remove Cl contained in the slurry.SELECTED DRAWING: Figure 2
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