Abstract

Fulfillment of the application sequence of smelting aids (increase in the blast rate, an increase in top gas pressure, and oxygen enrichment) is one of essential factors of blast-furnace smelting and performance indicators of furnaces. The use of smelting aids should be consistent with the change of full mechanical energies of blasting and hearth gas fluxes, whereas avoiding the decrease in blasting consumption and full mechanical energies of blasting and hearth gas rather than the change of the kinetic energy of blasting should be considered during the tuyere diameter choice. The optimal total tuyere section on furnace should also correspond to the increase in the blast-furnace enrichment rather than a decrease in the blast consumption. The route towards intensification of blast-furnace smelting through the increase in the oxygen concentration in blasting without improving the quality of iron ore raw material and coke is ineffective.

中文翻译：

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氧气的富集与爆破和炉膛气体的完全机械能的变化

摘要

满足熔炼助剂的使用顺序（提高鼓风速度，增加最高炉顶压力和富氧）是高炉冶炼的重要因素之一，也是炉子性能指标。熔炼助剂的使用应与爆破的全部机械能和炉膛气体通量的变化相一致，而避免喷砂消耗和爆破和炉底气的全部机械能的降低而不是爆破的动能的变化应与爆破动能的改变相一致。在选择风口直径时要考虑的问题。炉子上的最佳风口总截面也应对应于高炉浓缩的增加而不是高炉消耗的减少。