Abstract:

The process of producing direct-reduced iron（DRI） with coke oven gas was introduced. The production of DRI with gas-based vertical furnace was characterized by large production capacity, low production cost, flexible and convenient production operation and friendly-environment, therefore HYL-ZR rectifying process was selected first. From the viewpoint of circulation economy,  to produce DRI with large volume of coke oven gas produced in iron and steel long flow production process instead of natural gas can form a new metallurgical process of iron and steel co-existed in long flow and short flow featured in our country, which was the transit selection of actual condition of iron and steel industry development in our country.