Process for producing silicon-containing ferro alloys

Details Process for producing silicon-containing ferro alloys Process for producing silicon-containing ferro alloys

C - Chemistry, Metallurgy

21

B

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C21B 3/02 (2006.01) C22C 1/02 (2006.01) C22C 33/04 (2006.01) C22C 38/02 (2006.01)

Patent

CA 1116864

PROCESS FOR PRODUCING SILICON CONTAINING FERRO ALLOYS Abstract of the Disclosure A process for producing silicon-containing ferro alloys consists in preparation of a charge comprising quartzite and a briquetted mixture of an ore carring an alloying element of the alloy to be produced with a carbonaceous reducing agent, charging the resultant charge into a smelting furnace and subsequently carrying out a continuous one-stage melting. The process is characterized by a defficiency of a carbon content in the carboneous reducing agent, which defficiency being 1.03 to 1.25 times as low as that sufficient for the reduction of all the elements in the charge, and an excess of a carbon content, which excess being 2 to 15 times as high as that sufficient for the reduction of the alloying element. The process provides for elimination of both slagging and carbide depositing in the smelting chamber of the furnace, makes it possible to reduce power consumption and to extend the range of commercial grades of ferro alloys thus produced.

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