摘要:
在高炉冶炼中, 碳量消耗决定于热量碳耗与还原反应碳耗之和, 冶炼过程中, 随着铁直接还原度rd的增加, 直接还原碳耗增加, 而且由于反应大量耗热, 使热量碳耗也要增大, 提高了生产成本。因此, 冶炼过程中总希望降低rd值, 降低碳量消耗, 减少成本。通过计算低品位矿高炉碳消耗及铁直接还原度, 得出了碳消耗、煤气利用率与铁直接还原度间的关系曲线。结合冶炼实际, 对入炉物料选择、冶炼条件等方面提出改进措施, 为高炉冶炼降低成本, 节约能源提供依据。
Abstract:
In the blast furnace smelting,the consumption of carbon is determined by the sum of the calorific carbon consumption and the carbon loss of the reduction reaction.During the smelting process,as the direct reduction of iron rdincreases,the direct reduction carbon consumption increases,and as the reaction consumes a lot of heat,calorific carbon consumption should also increase,causing a high production costs.Therefore,reducing the rdvalue as low as possible,in order to reduce carbon consumption and reduce costs during smelting process. In this paper,the relationship between carbon consumption,gas utilization rate and iron direct reduction degree is obtained by calculating the carbon consumption and iron reduction degree of low grade ore blast furnace. Combined with the actual smelting,the furnace material selection,smelting conditions and other aspects of improvement measures for the blast furnace smelting had been proposed to reduce costs and provide the reference for energy conservation.
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