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从高炉风口向炉内喷吹煤粉是六十年代发展起来的一项重大新技术。这一新技术在全国的推广应用,促使焦比大幅度下降,生铁成本显著降低,为我国节约主焦煤,充分利用无烟煤资源开辟了新的途径。但是,一切事物都是一分为二的,我国高炉喷煤技术中存在的一个重要问题是“煤源单一”;各大、中型喷煤高炉几乎全部喷用山西阳泉煤。由于全国高炉喷煤技术发展很快,喷煤量大幅度增长,阳泉煤已趋供不应求,这使我们认识到,靠阳泉煤
Pulverized coal blowing from the tuyere to the furnace was a major new technology developed in the 1960s. The popularization and application of this new technology across the country led to a drastic drop in the coke ratio and a significant reduction in pig iron costs, opening up new avenues for saving primary coking coal and making full use of anthracite resources. However, everything is divided into two parts. One of the important problems existing in blast furnace coal injection technology in our country is “single coal source.” Most of the large and medium-sized blast furnaces spray almost all of Shanxi Yangquan coal. As the national blast furnace coal injection technology is developing rapidly, coal injection volume increased significantly, Yangquan coal has been in short supply, which makes us realize that by Yangquan coal