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2 200 062

(13)

C2

(51)

IPC

(21) (22)

Application

2000109205/03, 2000-04-12

(24)

Start date

2000-04-12

(22)

Actual filing date

2000-04-12

(45)

Published

2003-03-10

(72)

Inventor

Dubrovin M.E.Timoshchenko M.I.Katser I.U.Fedorov Ju.O.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

NIOBIUM-CONTAINING ORE CONCENTRATION PROCESS Russian patent published in 2003 - IPC

Abstract RU 2200062 C2

FIELD: mineral dressing. SUBSTANCE: process involves crushing, screening, and magnet separation to give various-quality products, which are then processed utilizing known technologies. According to invention, after magnet separation, nonmagnetic fraction is additionally enriched by means of x-ray-radiometric separation to give tailings and commercial niobium concentrate, this type of separation being conducted according to fineness classes -20+5 mm and assumed algorithm. EFFECT: reduced laboriousness and power consumption and enabled production of commercial Nb2O5 concentrate up to "wet" process limits. 2 cl, 2 ex

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RU 2 200 062 C2

Authors

Dubrovin M.E.

Timoshchenko M.I.

Katser I.U.

Fedorov Ju.O.

Dates

2003-03-10—Published

2000-04-12—Filed

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