微粉炭多量吹き込みを併用した高酸素濃度空気吹き竪型炉によるスクラップ溶解

概要

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Scrapmelting test was performed using an experimental melting furnace with coke packed bed injected with highly oxygen enriched air and a large quantity of pulverized coal and the following results were obtained. 1) Scrap (100% of material) was able to be melted by using coke for blast furnace. 2) The pig iron whose quality is equal to that of the blast furnace can be produced with high carburization and high desulfurization. 3) The fuel rate of 240 to 290kg/t and productivity of 14.7t/d/m^3 were obtained. 4) The fuel rate can be decreased and productivity can be increased by post combustion with air injection from the shaft wall. Based on the above mentioned results, the comparison of energy consumption of scrap melting process such as this process, electric furnace and basic oxygen furnace was made and a possibility was confirmed that the energy consumption of this process was the least among them. Therefore it is concluded that this process can be one of the attractive scrap melting methods when the scrap utilization is required in large quantities.
社団法人日本鉄鋼協会の論文
1993-02-01