1/3焦煤和气煤在首钢的应用实践

 为降低首钢京唐公司炼焦生产成本,采用300 kg试验焦炉分别对1/3焦煤和3种气煤进行了系统的配煤炼焦试验,分析了使用1/3焦煤和3种气煤后焦炭光学显微结构的变化,以及最终引起的焦炭强度的变化情况,通过试验得出在使用1/3焦煤或气煤替代强黏结性肥煤或焦煤时,1/3焦煤比例不大于10%,QM1、QM3(气煤1、气煤3)比例不大于7%,试验结果用来指导京唐公司炼焦生产,2019年节约炼焦配煤成本2 511万元,效益显著。所以,在炼焦配煤中适当提高低变质程度气煤和 1/3 焦煤的比例,对优化配煤结构和降低炼焦成本具有重要意义。

Practical application of 1/3 coking coal and gas coal in Shougang Group

In order to reduce the coking production cost of Shougang Jingtang Company,systematic coking investigations were conducted with a 300 kg coke oven to analyze the variation of coke optical microstructure and coke strength when using 1/3 coking coal and three kinds of gas coal. The results show that the ratio of 1/3 coking coal should be less than 10% and the ratio of QM1 and QM3 should be less than 7% if 1/3 coking coal or QM intend to replace strong cohesive fat coal or coking coal. The result was used to guide the coking production of Jingtang Company, which saved 25.11 million yuan in coking coal blending cost in 2019 with a remarkable benefit. Therefore, it is of great significance to increase the proportion of low rank including gas coal and 1/3 coking coal for optimizing coal blending structure and reducing coking cost.