Process of briquetting sponge iron-containing material

Details Process of briquetting sponge iron-containing material Process of briquetting sponge iron-containing material

C - Chemistry, Metallurgy

22

B

53/3

C22B 1/242 (2006.01) C21B 13/00 (2006.01) C22B 1/24 (2006.01)

Patent

CA 1141164

ABSTRACT OF THE DISCLOSURE: The invention is concerned with an improved process of briquetting sponge iron-containing material which has been produced by direct reduction and is in a cooled state and contains a binder added before the material is briquetted. The improvement of the invention being that a dilute sulfuric acid is added as a binder,and the material to which said diluted sulfuric acid is added contains more than 40% metallic iron. The invention enables one to produce in a simple manner briquet- tes which immediately after leaving the press have a high crushing strenght and abrasion resistance and can be transported and charged: to metallurgical furnaces without a further treatment. In addition, the briquettes obtained by the process of the invention are less susceptible to water and have a high dimen- sional stability during subsequent thermal processing.

351768

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