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2 176 621

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IPC

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Application

2000118590/12, 2000-07-12

(24)

Start date

2000-07-12

(22)

Actual filing date

2000-07-12

(45)

Published

2001-12-10

(72)

Inventor

Pojlov V.Z.Karpov A.A.Amirova S.A.Timakov M.V.Sidel'Nikova Eh.G.Shashin A.K.Vasin E.A.Gruzinskij I.V.Vdovin V.V.Minsadyrov M.M.Kopylova S.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Zavod"

METHOD OF TREATMENT OF SULFURIC ACID SEWAGE WATERS OF VANADIUM PRODUCTION Russian patent published in 2001 - IPC

Abstract RU 2176621 C1

FIELD: neutralization and treatment of sulfuric acid sewage waters of vanadium production for removal of vanadium, manganese, chromium; applicable in various industries for purification of sewage waters from said components. SUBSTANCE: method includes operations of sewage water neutralization and chemical precipitation of vanadium, manganese and chromium compounds by reagents, and subsequent separation and utilization of precipitate. At the first stage, calcium sulfate is precipitated by calcium chloride and separated, while at the second stage, compounds of vanadium, manganese and chromium are neutralized and chemically precipitated by sodium carbonate. EFFECT: concurrent production of well filtered precipitates and utilized technical calcium sulfate and manganese concentrate. 5 cl, 2 tbl, 2 ex

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RU 2 176 621 C1

Authors

Pojlov V.Z.

Karpov A.A.

Amirova S.A.

Timakov M.V.

Sidel'Nikova Eh.G.

Shashin A.K.

Vasin E.A.

Gruzinskij I.V.

Vdovin V.V.

Minsadyrov M.M.

Kopylova S.A.

Dates

2001-12-10—Published

2000-07-12—Filed