高炉高铝低钛渣的熔化性

在Al2O3的质量分数为15.14%~18.14%,TiO2的质量分数为2%~5%的范围内研究了普通高炉渣的熔化特性。应用正交试验方法,以水钢现场高炉渣为主要原料,适当配加分析纯的Ca(OH)2、MgO、SiO2、Al2O3和TiO2化学试剂调整炉渣的组成成分,采用炉渣熔化特性测试仪半球点法测定炉渣的熔化温度。试验结果表明:渣中碱度和Al2O3含量增加,炉渣熔化性温度升高;TiO2含量增加,炉渣的熔化性温度明显下降;适当提高渣中TiO2和MgO含量可避免因Al2O3含量升高而引起的熔化性温度上升;炉渣的熔化性温度在1 320~1 400℃之间,熔化性良好。

Melting Property of High-Alumina and Low-Titania BF Slag

The melting temperatures of BF slag containing high-content Alumina and low-content Titania was investigated by means of the method of hemisphaerium temperature.The influence of TiO2,Al2O3,MgO content and basicity on melting property of slag was studied.The tests showed that an increasing in bacisity,as well as Al2O3 content can cause an increase in the melting temperatures of BF slag,but an increasing in TiO2 content can decrease the melting temperatures of slag obviously.Morever,the melting temperatures may be boosted by a higher Al2O3 content,that could be avoided by adding an appropriate amount of TiO2 and MgO.The melting temperature of BF slag ranges from 1320℃ to 1400℃,the melting property is good.