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在镜下对 40 6 3m3高炉回旋区残炭的研究表明 ,不同煤岩显微组分所形成的残炭性状不同 ,这些残炭在镜下各有其特征 :喷煤水平在 16 1- 2 14kg/t间 ,随着喷吹量提高 ,回旋区中残炭虽增加 ,但未见堆积 ;未燃残炭绝大部分随上升气流经高炉被消耗掉 ;高炉炉顶逸出粉尘中残炭极少 ,且未发现由烟煤镜质组衍生的残炭 ,由无烟煤和烟煤丝质组衍生的残炭也很少。
The microscopic study of the residual carbon in the blast area of 40 6 3m3 blast furnace showed that the char residue formed by the different micro-components of different coal rocks has different characteristics. Each of these residual charcoal has its own characteristics under the microscope: the coal injection level is 16-1 2 14kg / t, with the injection rate increased, although the residual carbon in the cyclone zone increased, but no accumulation; most of the unburned carbon with the ascending gas flow through the blast furnace is consumed; blast furnace top escape carbon residue in the charcoal Very few, and did not find the bituminous coal derived from the bituminous coal group, anthracite and bituminous coal-derived carbon residue group is also very small.