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2 240 361

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IPC

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Application

2002129864/02, 2002-11-06

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Start date

2002-11-06

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Actual filing date

2002-11-06

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Published

2004-11-20

(72)

Inventor

Korolev M.G.Kaporulin V.V.Koryshev A.N.Kozlov D.D.Jaroshenko A.V.Lavrov A.S.Bezukladov V.I.Khajbullin V.G.Khrebin V.N.Khokhlov O.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Metallurgicheskij Kombinat"

METHOD OF REMOVING ZINC AND REDUCING IRON OXIDE WASTE (METALLIZATION) Russian patent published in 2004 - IPC

Abstract RU 2240361 C2

FIELD: metallurgy.

SUBSTANCE: method involves briquetting waste, heating briquettes in rotary tubular furnace using solid carbon-containing substance as reducing agent, afterburning of flue gases, cooling and entrapping zinc-containing dust. Waste is briquetted together with solid carbon-containing substance, in particular ground coal or brown coal. Briquettes are transferred into straight-flow tubular furnace heated by fuel-air burners disposed on the charge side of furnace. Temperature of briquettes at the furnace outlet is maintained within the range 700 to 1000^оС. Flue gas velocity in the furnace, reduced to normal conditions, us set to be between 0.3 and 1.0 m/s. Waste, prior to be briquetted, is preliminarily heated in countercurrent tubular furnace to 550-1000^оС.

EFFECT: increased efficiency of recovering zinc from waste and of reducing iron oxides.

3 cl, 1 dwg, 1 tbl

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RU 2 240 361 C2

Authors

Korolev M.G.

Kaporulin V.V.

Koryshev A.N.

Kozlov D.D.

Jaroshenko A.V.

Lavrov A.S.

Bezukladov V.I.

Khajbullin V.G.

Khrebin V.N.

Khokhlov O.V.

Dates

2004-11-20—Published

2002-11-06—Filed