摘要:
根据宣钢高炉冶炼条件采用RTW熔体物性测定仪,并以现场含钛高炉渣为基准,进行炉渣的黏度试验;研究不同的碱度、MgO和Al2O3含量对低钛高炉渣流动性能的影响。结果表明:试验用4种不同碱度炉渣黏度η-T曲线具有短渣特性,随炉渣碱度升高,炉渣η-T曲线短渣特性增强;在相同温度条件下炉渣黏度基本随碱度的升高而降低;MgO在一定范围内能起到降低炉渣黏度的作用,但MgO含量超过11%时,炉渣黏度随MgO含量的升高而增大;在试验条件下,低钛炉渣Al2O3含量对炉渣流动性质影响较小,生产中炉渣温度应保证在1400℃以上,炉渣Al2O3含量可以适当选高。
Abstract:
According to Xuan steel’s blast furnace conditions,a RTW melt properties analyzer was used to to measure slag viscosity and then to research the effect of different basicity,MgO and Al2O3 content on flow properties of high titanium-bearing slag of blast furnace. The results show that the slags with 4 different levels of basicity feature short slag viscosity η-T curve. With increasing slag basicity,short η-T curve feature enhanced. At the same temperature the viscosity of the slag decreases as basicity increases. MgO in a certain range is able to play the role in reducing slag viscosity,but when the MgO content exceeds 11%,the slag viscosity increases with increase of MgO content. Al2O3 contenthas little effect on flow properties.Theslag temperature should maintain at above 1 400 ℃,and slag is feasible with higher Al2O3 content.
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