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.
出处
《特殊钢》
北大核心
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)
