铁矿石品位与焦比、铁水产量关系的研究

Study on the Relationship between the Iron Ore Grade and Coke Ratio,Molten Iron Output

为进一步了解铁矿石品位与焦比、铁水产量的关系,用拉姆计算法对铁矿石品位变化1%对焦比的影响进行计算,对国内某炼铁厂2 500 m3高炉实际生产数据进行统计及理论计算。研究结果表明随着矿石品位的增加,矿石品位对焦比的影响越来越小,铁水产量随铁矿石品位呈线性增长关系。计算得出入炉铁矿石品位为56.4%时,矿石品位增加∶焦比减少∶铁水产量增加=1∶1.6∶1.77,与实际统计得到的1∶1.74∶2.39较为相近,计算结果有效,但与经验关系1∶2∶3有所不同。提供了一种能用于生产高炉分析矿石品位与焦比、铁水产量关系的计算方法,为细化高炉操提供指导。

For a more profound understanding of the relationship between the iron ore grade and coke ratio, molten iron output, based on the Rahm method, the coke ratio reduction can be calculated when iron ore grade 1% changes, the statistical data and theoretical calculation are carried on a domestic 2500 m3 blast furnace. The results show that as the ore grade increased, the effect on coke ratio reduction becomes more and more small, molten iron output grows with the iron ore grade linearly. When the iron ore grade is 56.4% in practice, ore grade increase： coke ratio reduction： hot metal output increase is 1 ： 1.6 ： 1.77, which is similar to the actual statistics 1 ： 1.74 ： 2.39, but is different from the empirical valuel ： 2 ： 3, so the calculation results is effective. And this research provides a commonly calculation method of understanding the relations between iron ore grade and coke ratio, molten iron output in the production of blast furnace.