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2 104 949

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Application

96119145/25, 1996-09-26

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Actual filing date

1996-09-26

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Published

1998-02-20

(72)

Inventor

Vol'Khin A.I.Germashev A.S.Evgenov A.M.Makarov Ju.A.Plekhanov I.D.Sidorenko A.Ju.Shabalin V.M.Sharabrin V.V.Shebolaev S.N.

(73)

Holder

Zakrytoe Aktsionernoe Obshchestvo Medeehlektrolitnyj Zavod"

METHOD FOR PRODUCTION OF PURE NICKEL SULFATE Russian patent published in 1998 - IPC

Abstract RU 2104949 C1

FIELD: production of pure nickel-containing salts, namely, nickel sulfate by using waste electrolytes of copper production. SUBSTANCE: contaminated nickel sulfate is dissolved in water, then it is treated with hydrogen peroxide. Thus obtained solution is neutralized by nickel carbonate, the process is carried out in the presence of phosphorous-containing compound. Phosphoric acid, or potassium dihydrophosphate or sodium orthophosphate is used as mentioned above phosphorous-containing compound. EFFECT: decreased content of zinc, ferrum and copper impurities in desired product. 4 cl

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RU 2 104 949 C1

Authors

Vol'Khin A.I.

Germashev A.S.

Evgenov A.M.

Makarov Ju.A.

Plekhanov I.D.

Sidorenko A.Ju.

Shabalin V.M.

Sharabrin V.V.

Shebolaev S.N.

Dates

1998-02-20—Published

1996-09-26—Filed

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