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以首钢炼铁原料为基础,对高炉喷吹煤与废塑料条件下的矿石还原粉化性能进行研究。结果表明:温度是影响炉料低温还原粉化的主要因素,500℃时粉化最为严重,900℃时炉料的低温还原粉化基本结束,在500~900℃,炉料粉化率随温度的升高而降低;相同温度条件下,炉料的低温还原粉化率随H2含量的增加而增加,随CO2含量的增加而减少;喷吹煤与废塑料后,炉料的低温还原粉化性能不会影响高炉的顺行;烧结矿的低温还原粉化率较大,球团矿、块矿较小。
Based on the raw materials of Shougang Ironmaking, the reduction and pulverization properties of ore under blast furnace PCI and waste plastics were studied. The results showed that the temperature was the main factor that affected the low temperature reduction pulverization of the charge. The pulverization was the most serious at 500 ℃. The low temperature reduction pulverization of the charge at 900 ℃ was basically completed. At 500-900 ℃, the pulverization rate of the charge increased with the increase of temperature But decreased with the increase of H2 content under the same temperature conditions, and decreased with the increase of CO2 content. After pulverized coal and plastic scrap, the low-temperature reduction pulverization of the charge did not affect the blast furnace Of the order; sinter low temperature reduction pulverization rate, pellets, lump ore smaller.