含铁炉料间高温交互作用对初渣生成行为的影响

Influence of high temperature interaction between iron ores on the formation behavior of primary slags

为了考察高炉内烧结矿与块矿间的高温交互反应对其初渣生成行为的影响,本文采用试验研究结合理论计算的方法,研究烧结矿、块矿及其二者混合炉料的初渣生成行为及其初渣特性.结果表明:单种块矿或烧结矿的初渣生成温度区间宽;烧结矿与块矿间的高温交互反应能显著改善块矿的初渣生成行为,并降低其初渣黏度;铁矿石间高温交互反应程度的强弱受其化学成分、还原性能、气孔率等因素的影响.

To explore the effect of high temperature interaction between sinter and lump ores on the formation behaviors and char- acteristics of primary slags, experimental and theoretical methods were used to study the primary-slag formation behaviors and charac- teristics of sinter, lump ores and their integrated burdens in a blast furnace. The results show that the primary-slag formation tempera- ture intervals of single iron ores are wide. Due to the high temperature interaction the primary-slag formation behavior markedly improves and the viscosity of primary slags decreases. However, the high temperature interaction is influenced by the chemical compo- sition, reducing properties and porosity of iron ores.