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2 245 930

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IPC

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Application

2003128897/02, 2003-09-26

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Start date

2003-09-26

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Actual filing date

2003-09-26

(45)

Published

2005-02-10

(72)

Inventor

Bruev V.P.Kretov S.I.Evstjugin S.N.Gorbachev V.A.Voevodin L.I.Vakhrushev L.P.Leont'Ev L.I.Shavrin S.V.

(73)

Holder

Nauchno-Proizvodstvennoe Vnedrencheskoe Predprijatie

BATCH FOR PELLET PRODUCTION USED IN METALLURGY Russian patent published in 2005 - IPC

Abstract RU 2245930 C1

FIELD: pellet production, in particular method for batch preparation.

SUBSTANCE: batch includes iron-ore concentrate and binding composition containing bentonite and 1-5 wt % of polymer (e.g. polysaccharide-based polyelectrolyte) as bentonite activator. Polymer content in each case is determined according to specific surface of iron-ore concentrate using the next equation: X = (0.5-2.5)xS_s/1000, wherein X denotes polymer content in binding composition, wt %; S_s denotes specific surface of iron-ore concentrate, cm²/g. In addition batch contains 0.5-2.0 wt % of fluxing additive and when pellets are used in metallization furnace batch also contains 0.4-1.1 wt % of bauxite.

EFFECT: pellets of high quality in dry and wet states, optimum reducibility and strength.

4 cl, 2 tbl

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RU 2 245 930 C1

Authors

Bruev V.P.

Kretov S.I.

Evstjugin S.N.

Gorbachev V.A.

Voevodin L.I.

Vakhrushev L.P.

Leont'Ev L.I.

Shavrin S.V.

Dates

2005-02-10—Published

2003-09-26—Filed