Research of Al2O3 Influence on Furnace Burden's Dropping Performance of Vanadium-titanium Magnetite
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摘要: 利用高温熔滴炉模拟实际高炉软熔带的运行情况,探讨Al2O3对含钒钛高炉炉料的软化温度、熔化温度、最大压差等高温物理性能的影响。结果表明:Al2O3含量增加后炉料的软化开始温度(T10)和软化终了温度(T40)升高,软化区间(ΔT1)变窄;炉料的熔化开始温度(Ts)降低,滴落温度(Td)升高,熔化区间(ΔTds)变宽;炉料的最大压差(ΔPmax)升高,熔滴总特性值(S值)增大,熔滴性能变差。试验结果表明Al2O3含量的增加对炉料的熔滴性能产生了负效应。Abstract: Experiments were carried out in the lab to simulate dropping zone of blast furnace by a high temperature oven,and the effect of Al2O3 on charge softening temperature range,melting temperature range,maximum pressure and other high temperature physical properties had been investigated.The results showed that with the increase of Al2O3 charge,both start softening temperature(T10) and the end softening temperature(T40) increased,but softening interval(ΔT1) was narrowed; charge renewed pressure temperature(Ts) were decreased but dropping temperature(Td) were increased,while melting range(ΔTds) was widened; the maximum pressure(ΔPmax) and the total characteristic droplet value(S) were also increased,which resulted in worse droplet performance.It can be concluded that increase of Al2O3 produce negative effect on the performance of the droplet.
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