A method of reusing a ferruginous by-product, and a device for it

Japanese Patent JP6097407

B2

The present invention relates to a method for reusing an iron-containing by-product and an apparatus therefor and, more specifically, to a method for reusing an iron-containing by-product, comprising the steps of forming a briquette by mixing an iron-containing by-product with 5-20 parts by weight of carbon per 100 parts by weight of the iron-containing by-product, pre-reducing the briquette at 800-1300°C, and charging the pre-reduced briquette into an electric furnace, and to an apparatus for reusing an iron-containing by-product, comprising a reducing furnace for pre-reducing, at 800-1300°C, a briquette formed by mixing an iron-containing by-product with 5-20 parts by weight of carbon per 100 parts by weight of the iron-containing by-product, and an electric furnace into which the pre-reduced briquette is charged. The present invention can reduce the cost of treating industrial waste by recycling an iron-containing by-product, such as electric furnace dust which is an environmentally regulated substance discharged from an electric furnace, and can simultaneously contribute to reducing the cost of molten steel production by reusing the iron-containing by-product as a raw material for an electric furnace. In addition, the present invention can substitute for the function of a combustion facility for removing dioxin or carbon monoxide contained in the exhaust gas of an electric furnace, thereby inducing the effect of additional cost reduction.

Re, baek
Chai, Su Ho
Shin, Gong

JP2015549257A

March 15, 2017

December 19, 2013

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POSCO

C21B13/14; C22B1/245; C22B5/10; C22B7/00; C22B7/02; F27D17/00

JP2002047507A
JP2002517607A
JP62240708A
JP50083205A

Kyosei International Patent Office

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