Method of producing coke for metallurgy

C - Chemistry – Metallurgy – 10 – B

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C10B 57/04 (2006.01)

Patent

CA 2304744

In a method of producing coke for metallurgy by carbonizing a coal blend obtained by blending plural raw coals in an coke oven, a coal blend containing not less than 60 wt% of a medium coking coal of middle coalification degree and low fluidity having an inert component content of not less than 30% is used as a coal charged into the coke oven, whereby a great amount of raw coal of a brand being cheap and easily available can be blended in a great amount and hence coke for metallurgy having an excellent quality such as strength or the like can be produced by blending few brands of coals as compared with a coal blend of many brands.

Ce procédé, qui sert à produire un coke métallurgique en carbonisant dans un four à coke un mélange de charbon préparé par combinaison de plusieurs charbons bruts, consiste à utiliser, comme charge de charbon dans le four à coke, un mélange de charbon qui contient au moins 60 % en poids d'un charbon cokéfiable moyen présentant un degré moyen de carbonification et une faible fluidité et contenant au moins 30 % d'ingrédients inertes. Ce procédé peut servir à mélanger une grande quantité d'une marque facilement disponible de charbon brut, et à produire ainsi un coke métallurgique de qualité supérieure, par exemple en terme de résistance mécanique, avec le mélange d'un plus petit nombre de marques de charbon, par rapport au coke produit par un procédé classique utilisant un mélange d'un plus grand nombre de marques de charbon.

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