SiO_2含量对钢渣自粉化影响的机理研究

Study on the Mechanism of SiO_2 Content in the Steel Slag Self-disintegration

依据转炉钢渣化学成分特点，选择了以CaO50％-SiO2 10％-MgO10％-Fe2O3 30％四元简单合成渣系作为试验基础渣系，向其中加入0～18％的SiO2改性，研究了SiO2增加量与钢渣自粉化率的关系。结果表明，较佳SiO2增加量应该在8％～12％左右，即转炉钢渣的二元碱度值为2．5左右，此时0．154mm以下钢渣粉化率能达到94．33％，钢渣自粉化效果较好。

Based on the characteristics of chemical compositions of steel slags, CaO-SiO2-MgO-Fe2O3 slag was chose as four simple synthetic slag acting as experimental basic slag system, Adding 0 - 18 % SiO2 as modifier to basic slag, The relationship between the increase of SiO2 content and the rate of pulverized steel slag was studied. The research results show that, When adding 8% - 12% SiO2,The basicity of actual converter steel slag（R） is about 2. 5, 100 mesh is more than 94. 33% ,the slag pulverization effect is best.