组分含量对CaO-MgO-SiO_2-Al_2O_3四元精炼渣系黏度的影响  

Effect of Ingredient on Viscosity of CaO-MgO-SiO_2-Al_2O_3 Quaternary Refining Slag Series

作　　者：张明博[1] 李俊国[1] 马红强[1] 

机构地区：[1]河北联合大学河北省现代冶金技术重点实验室,唐山063009

出　　处：《特殊钢》2013年第2期28-31,共4页Special Steel

基　　金：河北省自然科学基金资助项目(No.E2012401063)

摘　　要：采用三元二次正交设计方法,利用熔体物性综合测定仪对碱度(CaO/SiO_2)1.2～6.0,MgO 1.9%～10%,Al_2O_3 6%～29.1%的CaO-MgO-SiO_2-Al_2O_3四元精炼渣系的黏度进行了测试和研究。实验结果表明.该四元渣1 500℃的黏度为0.129～4.612 Pa·s,随碱度增加,该精炼渣系的黏度先略有下降后快速增加;随MgO含量增加,该渣系黏度呈现快速降低后略有上升的趋势;随Al_2O_3含量增加,该渣系黏度快速降低。综合来看,碱度为4～5、MgO 4.5%～5.5%、Al_2O_324%～27%时,该精炼渣系黏度(≤1.0 Pa·s)较为适宜,具有较好的流动性,促进渣-金之间的反应,提高吸附夹杂物的能力,并为脱硫创造有利的动力学条件。Using ternary-quadratic orthogonal design method the viscosities of CaO-MgO-SiO2-Al2O3 quaternary refi- ning slag series with basicity （ CaO/SiO2 ） 1.2 - 6. 0, MgO 1.9% - 6. 0% and A1203 6% - 29. 1% are measured and studied by using comprehensive meter for melt properties. Test results show that the viscosities of quaternary slag series at 1 500℃ are 0. 129 -4. 612 Pa ·s; with increasing basicity the viscosity of refining slag series decreases slightly at beginning then increases quickly; with increasing MgO content the viscosity of slag series decreases remarkably at first then increases slightly and with increasing Al2O3 content the viscosity of slag series decreases rapidly. It is obtained by synthetical study that the refining slag series with basicity 4 - 5, MgO 4. 5% - 5.5% and A1203 24% - 27% have suitable viscosity （≤ 1.0 Pa · s） which have better fluidity to promote slag-metal reaction, increase ability of absorption of inclusions and create a favorable condition for desulphurization.

关 键 词：CaO-MgO-SiO2-Al2O3精炼渣系 正交回归 黏度 组分 

分 类 号：TF769[冶金工程—钢铁冶金]