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2 215 053

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Application

2002107335/02, 2002-03-22

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Start date

2002-03-22

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Actual filing date

2002-03-22

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Published

2003-10-27

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Inventor

Kozhevnikov G.N.Vodop'Janov A.G.Shavrin S.V.Leont'Ev L.I.Stoljarov Ju.V.

(73)

Holder

Gosudarstvennoe Uchrezhdenie Institut Metallurgii Ural'Skogo Otdelenija RanOao

TITANIUM-CONTAINING SLAG PROCESSING METHOD Russian patent published in 2003 - IPC

Abstract RU 2215053 C1

FIELD: nonferrous metallurgy. SUBSTANCE: method comprises grinding initial titanium-containing slags and successive double-step treatment in nitric acid and sodium hydroxide solutions, which is characterized by that slags to be processed are those originating from blast- furnace production and granulated at temperature above 1300 C. Precipitate after alkali treatment is additionally rinsed with water containing more than 1% sodium hydroxide and then treated with nitric acid solution, precipitate obtained after treatment of slag with nitric acid being treated with alkali solution at NaOH/SiO2 molar ratio above 4.4:1. EFFECT: reduced expenses, increased recovery of metal oxides from slag, and reduced sodium oxide content in titanium oxide concentrate. 2 cl, 1 tbl, 3 ex

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RU 2 215 053 C1

Authors

Kozhevnikov G.N.

Vodop'Janov A.G.

Shavrin S.V.

Leont'Ev L.I.

Stoljarov Ju.V.

Dates

2003-10-27—Published

2002-03-22—Filed

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