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2 246 545

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IPC

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Application

2003100218/02, 2003-01-04

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Start date

2003-01-04

(22)

Actual filing date

2003-01-04

(45)

Published

2005-02-20

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Inventor

Malygin A.V.Nevraev V.P.Gurkin M.A.Galkin A.I.Romanovskij V.F.Sidorkov N.V.Guljaev V.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo

METHOD FOR AGGLOMERATE PRODUCTION Russian patent published in 2005 - IPC

Abstract RU 2246545 C2

FIELD: metallurgy, in particular manufacturing of iron ore agglomerate for blast-furnace reduction.

SUBSTANCE: claimed method includes charging batch layer, containing iron ore material, flux, additive, recycled material and solid fuel, onto sintering machine; firing; sintering; cooling, and mechanical cake treatment. Iron oxide (FeO) content in finished agglomerate is controlled and regulated according to layer height and batch basic capacity. Rational FeO content (FeO_A) is defined as FeO_A = FeO_B+ K₃(FeO_BI+ FeO_BF), wherein FeO_B= K₁ - K₂.B.Hⁿ; K₁, K₂,_{K_2,and n - empirically determined coefficients, B - batch basic capacity, CaO/SiO₂; H - batch layer height on sintering machine, mm; FeO_BI and FeO_BF - mass FeO content in batch before and after alteration of FeO content in agglomerate. When magnetite concentrates are sintered K₁ = 20.0-22.0; K₂ = 0.25-0.30; K₃ =0.2-0.7; n = 0.5-0.8.}

EFFECT: decreased solid fuel consumption, increased sintering machine capability, agglomerate with improved strength and reducibility.

2 cl

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RU 2 246 545 C2

Authors

Malygin A.V.

Nevraev V.P.

Gurkin M.A.

Galkin A.I.

Romanovskij V.F.

Sidorkov N.V.

Guljaev V.A.

Dates

2005-02-20—Published

2003-01-04—Filed