本钢二铁厂3座高炉为了扩大喷吹用煤,试用了太西精煤和本溪竖井精煤按1:1配比进行混合喷吹,收到了很好效果,既保证了生铁质量,又扩大了喷吹煤源,满足了生产急需。煤焦置换比为0.95。太西精煤和本溪竖井精煤的工业分析见附表。以年产生铁270万吨,喷煤量80 kg/t铁 In order to expand the coal used for blowing, three blast furnaces of Benxi Iron & Steel Co., Ltd. were tested, and the mixture of Taixi Jingbin coal and Benxi shaft coal concentrate was mixed and mixed at a ratio of 1: 1. Good results were achieved, which not only ensured the quality of pig iron but also Expanded coal injection source to meet the urgent need of production. Char conversion ratio of 0.95. Taixi coal and Benxi vertical well coal industrial analysis see schedule. With an annual output of 2.7 million tons of iron, coal injection 80 kg / t iron