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2 139 249

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IPC

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Application

98114888/12, 1998-07-20

(24)

Start date

1998-07-20

(22)

Actual filing date

1998-07-20

(45)

Published

1999-10-10

(72)

Inventor

Gordienko P.S.Maslennikova I.G.Laptash N.M.Goncharuk V.K.Smol'Kov A.A.

(73)

Holder

Institut Khimii Dal'Nevostochnogo Otdelenija Ran

METHOD OF PREPARING TITANIUM-CONTAINING STOCK Russian patent published in 1999 - IPC

Abstract RU 2139249 C1

FIELD: finally paint and varnish, ceramic, building, leather and paper industries. SUBSTANCE: method comprises melting titanium-containing concentrates together with ammonium hydrodifluoride, subsequently leaching cake with water, separating ammonium fluoroferrate salts precipitated at pH of 7-8 and crystallizing iron-free ammonium hexafluorotitanate solution. EFFECT: improved quality of main commercial products (iron oxide and titanium pigments, lower power consumption of process and simplified processing of ilmenite stock. 5 cl, 1 ex

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RU 2 139 249 C1

Authors

Gordienko P.S.

Maslennikova I.G.

Laptash N.M.

Goncharuk V.K.

Smol'Kov A.A.

Dates

1999-10-10—Published

1998-07-20—Filed

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