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Application

98104542/02, 1998-03-25

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Actual filing date

1998-03-25

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Published

1999-06-10

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Inventor

Mizin V.G.Komratov Ju.S.Kuzovkov A.Ja.Poljanskij A.M.Il'In V.I.Chernushevich A.V.Dobosh V.G.Kuklinskij M.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

PROCESS OF WINNING OF VANADIUM-CARRYING SLUDGE WHILE VANADIUM IRON IS PROCESSED BY MONOPROCESS Russian patent published in 1999 - IPC

Abstract RU 2131466 C1

FIELD: ferrous metallurgy, winning of vanadium-carrying sludge during processing of blast furnace pig iron to steel. SUBSTANCE: process includes loading of metal scrap, pouring of pig iron, supply of limestone and fluorite followed by subsequent blow-through with oxygen. Magnesium-carrying addition in the amount ensuring content of magnesium within limits of 6.0-20.0% in vanadium-containing sludge is injected before loading of metal scrap. In the capacity of magnesium-carrying addition there are used magnesium carbonate powder and/or raw and burnt dolomite, dolomite and dunite mixture, iron-magnesium-calcium concentrate, breakage of forsterite-magnesium articles, etc. Proportion of magnesium-carrying material and metal scrap to amount of poured pig iron is established within bounds (0.0068-0.018): 1.0 and (0.21-0.23):1.0 correspondingly. Proposed process makes it possible to increase substantially resistance of lining of converter approximately 1.5-1.8 times and to win vanadium- carrying sludge with higher break-down of vanadium up to 76.8-80.5%. Besides, obtained sludge has considerably lower content of calcium and phosphorus oxides which results in decreased usage of reagents for hydrometallurgical processing. EFFECT: enhanced efficiency. 1 cl, 1 tbl

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RU 2 131 466 C1

Authors

Mizin V.G.

Komratov Ju.S.

Kuzovkov A.Ja.

Poljanskij A.M.

Il'In V.I.

Chernushevich A.V.

Dobosh V.G.

Kuklinskij M.I.

Dates

1999-06-10—Published

1998-03-25—Filed

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