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2 266 343

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Application

2003112715/02, 2003-05-06

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Start date

2003-05-06

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Actual filing date

2003-05-06

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Published

2005-12-20

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Inventor

Kozlov Vladillen AleksandrovichKamenskikh A.A.Karpov A.A.Vdovin V.V.

(73)

Holder

Npo

METHOD OF PROCESSING VANADIUM-CONTAINING CONVERTER SLAG Russian patent published in 2005 - IPC

Abstract RU 2266343 C2

FIELD: processing vanadium-containing converter slag.

SUBSTANCE: proposed method includes roasting of slag with reaction additive, leaching-out cinder by soda solution for obtaining vanadate solution and separating vanadium oxide from it. At roasting, waste slag of vanadium process is introduced as reaction additive; waste slag contains hematite and manganese oxide at mole ratio of vanadium to manganese equal to 1:1. Roasting is performed at 800-850°C for 3 h; leaching-out is carried out with soda solution at mole ratio of V2O5:Na2CO3 equal to 1:1.2-1.8 including filtration of sodium vanadate solution and flushing the sediment with water. Vanadium and sodium are separated from solution thus obtained by electrochemical treatment in membrane system, sorption or neutralization by sulfuric acid followed by sedimentation of polyvanadium acid salts.

EFFECT: increased extraction of vanadium products; reduction of waste water disposal.

1 dwg, 8 tbl, 8 ex

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RU 2 266 343 C2

Authors

Kozlov Vladillen Aleksandrovich

Kamenskikh A.A.

Karpov A.A.

Vdovin V.V.

Dates

2005-12-20—Published

2003-05-06—Filed

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