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通过分析高富氧喷煤后焦炭在高炉中的作用及炉内冶炼参数的变化,在富氧、喷煤、风温、装料制度、上下部调剂等方面合理配合条件下,可提高煤粉燃烧率,维持较高的风口理论燃烧温度,减少炉腹煤气量,提高生产效率。高富氧喷煤达到焦比和煤比各占一半时,焦炭量能够满足直接还原和渗碳需求。为了满足焦炭骨架作用,需要使用反应性差和耐磨性好的焦炭。
By analyzing the role of coke in the blast furnace and the smelting parameters after the high oxygen-rich coal is sprayed, the combustion of pulverized coal can be improved under the conditions of oxygen enrichment, coal injection, air temperature, loading system, Rate, maintain a high tuyere theory combustion temperature, reduce the amount of gas bosh, improve production efficiency. High oxygen-rich pulverized coal to achieve coke ratio and coal ratio in each half, the amount of coke to meet the direct reduction and carburizing needs. In order to satisfy the coke skeleton effect, it is necessary to use a coke having poor reactivity and good abrasion resistance.