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2 065 402

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Application

94032133/26, 1994-09-02

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Actual filing date

1994-09-02

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Published

1996-08-20

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Inventor

Kaplun R.Ja.Ivonin V.P.Elkin M.I.Romanova V.V.Zimnitskij P.V.Zimnitskij B.V.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD FOR ISOLATION OF COPPER SULFATE Russian patent published in 1996 - IPC

Abstract RU 2065402 C1

FIELD: metallurgy, chemical industry, agriculture. SUBSTANCE: origin sulfate solution which contains copper sulfate and nickel sulfate is preliminary heated to temperature being by 10-25 C higher then crystallization point of copper sulfate. Evaporation and crystallization are carried out simultaneously at pressure (-0.92)-(-0.98) kgs/sm2 till ratio of solid and liquid phases is 1:3.5-4.5. Suspension of crystals of copper sulfate is concentrated till ratio of solid and liquid phase is 1:1.4-1.5. Thus prepared concentrated suspension is dissolved in aqueous condensate, the process is followed by recrystallization of copper sulfate. Crystalline copper sulfate is centrifuged of said suspension. EFFECT: improves quality of desired product, increases extraction of copper. 2 cl, 1 tbl

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RU 2 065 402 C1

Authors

Kaplun R.Ja.

Ivonin V.P.

Elkin M.I.

Romanova V.V.

Zimnitskij P.V.

Zimnitskij B.V.

Dates

1996-08-20—Published

1994-09-02—Filed

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