Process for the continuous blowing of fine-particle reducing...

Details Process for the continuous blowing of fine-particle reducing... Process for the continuous blowing of fine-particle reducing...

C - Chemistry, Metallurgy

21

C

53/89

C21C 5/30 (2006.01) C21B 5/00 (2006.01) C21B 5/02 (2006.01) C22B 5/10 (2006.01) C22B 9/10 (2006.01)

Patent

CA 1178061

ABSTRACT OF THE DISCLOSURE The invention is concerned with a metallurgical process in which fine-particle mineral coal is continu- ously blown into a shaft furnace. According to the invention, the fine-particle mineral coal is mixed with at least one fine-particle solid carrier of carbon in the form of alkaline compost made of rotting household waste sewage sludge or a combination thereof, and the resulting mixture is stored in a bulk store, the quantity of the carbon carrier being sufficient to loosen the said mixture and to prevent it from caking and sticking in the bulk store. The mixture is then withdrawn from the store and blown continuously into the shaft furnace. The invention permits the use of inexpensive fine particle mineral coal and reduces the problems occurring during the storage in storage bunkers of fine mineral coals having a high ash content at least to a tolerable level while completely avoiding the need to fall back on expensive mechanical aids in order to prevent caking and sticking of the mineral coal.

384730

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