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六十年代以来,我国高炉锰铁冶炼取得了几项重大的技术进步,为今后赶超电炉锰铁开辟了广阔前景。从分析锰的还原条件和生产数据可以看出,进一步降低锰铁焦比的主攻方向应该是提高炉缸温度、供给炉缸充足热量、提高热能利用率,从而降低风口前的炭素燃烧量。富氧鼓风,高风温,脱湿鼓风将是三项主要的技术措施。通过计算可以得出,这三项措施实现后,在喷煤粉243(公斤/吨)情况下,焦比将从目前的1639(公斤/吨)下降到1214(公斤/吨);在维持高炉鼓风量不变条件下,锰铁产量将提高33％。
Since the 1960s, several major technological advances have been made in the ferromanganese smelting of blast furnace in our country, opening up broad prospects for catching up and surpassing the ferromanganese from the electric furnace in the future. From the analysis of manganese reduction conditions and production data, it can be seen that the main direction of further reducing the coke ratio of manganese and iron should be to increase the temperature of the hearth, to supply sufficient heat to the hearth, to increase the utilization of heat energy, and to reduce the amount of carbon burned before the tuyere. Oxygen-rich blast, high temperature, dehumidification blasting will be the three major technical measures. It can be concluded through calculation that after the three measures are implemented, the coke ratio will be reduced from the current 1639 (kg / t) to 1214 (kg / t) at 243 (kg / t) pulverized coal injection; Under constant blast volume, ferromanganese production will increase by 33%.