Vertical shaft furnace, ferro-coke production facility, and method for producing ferro-coke

Abstract

Provided is a vertical shaft furnace with which the equipment is simplified and the operating conditions are not complicated. A vertical shaft furnace (1) continuously produces a target product by incineration, gasification, and dry distillation or reduction of charging materials charged from the furnace top. Tuyeres (11) and (13) for blasting high-temperature gas are disposed in two steps in the direction of furnace length in order to form a high-temperature soaking zone of a predetermined length below the center position in the direction of furnace length.

Description

Technical field [0001] The present invention relates to a vertical shaft furnace, an iron coke manufacturing facility equipped with the vertical shaft furnace for manufacturing iron coke, and a method for manufacturing iron coke using the facility. The charge is burned, gasified, retorted or reduced to continuously manufacture the target product. Background technique [0002] In the blast furnace operation, metallurgical coke is usually used, which is produced by carbonizing coal in a coke oven. Metallurgical coke has a role as a spacer for good ventilation in a blast furnace, a role as a reducing material, a role as a heat source, and the like. [0003] In recent years, from the viewpoint of improving the reactivity of coke, a technique of mixing iron ore with coal to obtain iron coke for metallurgy has been known. As a technology for producing iron coke by dry distillation of iron source materials such as coal and iron ore as raw materials in a normal chamber coke oven, the fol...

AI Technical Summary

Problems solved by technology

However, when the coal used has a high caking property, the molded carbon is softened and melted in the shaft furnace, which makes it difficult to operate the shaft furnace and causes deterioration of coke quality such as deformation or cracking.

Images