论文部分内容阅读
通过建立高炉冶炼预还原炉料数学模型,计算了原料铁品位、预还原炉料金属化率和铁的存在形态对高炉冶炼能耗的影响,比较了高炉冶炼预还原炉料和传统高炉的能耗。计算结果表明:针对不同铁品位原料,有一个适合高炉冶炼的炉料最佳金属化率,使高炉冶炼焦比最低;预还原炉料中的铁以硅酸铁形式存在时,主要进行直接还原,冶炼焦比较高;与传统高炉相比,高炉冶炼预还原炉料,可以大幅度降低焦比,但燃料比升高。
The mathematical model of blast furnace smelting pre - reduction charge was established. The influence of raw material iron grade, the metallization rate of prereduced charge material and the presence of iron on blast furnace smelting energy consumption were calculated. The energy consumption of blast furnace smelting prereduction furnace charge and conventional blast furnace were compared. The calculation results show that there is a suitable metallization ratio for blast furnace smelting for different iron grade raw materials, so that the blast furnace smelting coke ratio is the lowest. When the iron in prereduction charge exists in the form of ferric silicate, it is mainly for direct reduction, smelting Compared with the traditional blast furnace blast furnace smelting pre-reduction charge, can significantly reduce the coke ratio, but the fuel ratio increased.