ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2014, Vol. 35 ›› Issue (2): 9-12.

• 试验研究 • 上一篇    下一篇

组分和粒度对高碱度精炼渣半球熔点和熔化速率的影响

董方,邓浩华,郄俊懋   

  1. 内蒙古科技大学材料与冶金学院,包头 014010
  • 收稿日期:2013-09-22 出版日期:2014-04-01 发布日期:2022-09-07
  • 作者简介:董方(1964-),男,教授,硕士生导师,1987年东北大学毕业,钢铁冶金研究。

Effect of Ingredient and Particle Size on Semispherical Melting-Point and Melting Rate of High Basicity Refining Slag

Dong Fang , Deng Haohua , Qie Junmao   

  1. School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010
  • Received:2013-09-22 Published:2014-04-01 Online:2022-09-07

摘要: 使用CQKJ-Ⅲ矿渣熔化温度测定仪和MTLQ-RD-1300半球熔点熔速综合测定系统,通过正交实验研究碱度、BaO(6%~14%)、CaF2(0~10%)和Al2O3(18%~28%)对基础精炼渣系CaO-SiO2-Al2O3一MgO-CaF2半球熔点(熔化温度)和熔化速率的影响。结果表明,对高碱度精炼渣熔点的影响因素为CaF2、BaO、Al2O3、碱度(R)依次减弱;对熔速的影响因素为碱度(R)、Al2O3、CaF2、BaO依次减弱,提高精炼渣碱度同时添加适量的Al2O3可以降低精炼渣的熔点和提高熔速,BaO、CaF2的加入也能不同程度的降低精炼渣的熔点,提高精炼渣的熔速;当碱度为4~5,BaO 10%~14%,Al2O3 23%~28%,CaF2 5%~10%时,精炼渣的熔点比较低(约1340℃),熔速比较大(熔化时间<50 s);减小高碱度精炼渣的粒度可以降低熔渣的熔点和提高熔化速率。

关键词: CaO-SiO2-Al2O3-MgO-CaF2基精炼渣, BaO, 组分, 粒度, 熔点, 熔化速率

Abstract: The effect of basicity, BaO(6%-14% ), CaF2 (0-10% ) and A12O3 (18%-28% ) on semispherical melting-point and melting rate of basic refining slag series CaO-SiO2 -A12O3  -MgO-CaF2 has been studied with CQKJ-III mineral slag melting temperature measure device and MTLQ-RD-1300 semispherical melting point (melting temperature) and melting rate comprehensive measuring system and by orthogonal examination. Results show that the influence factors on melting point of high basicity refining slag are CaF2, BaO, A12O3  and basicity R and weaken sequentially, and the sequence of influence factors on melting rate are basicity R, A12O3 , CaF2 and BaO; it is available by increasing refining slag basicity and adding suitable A12O3  to decrease melting point of refining slag and increase melting rate, while the refining slag melting point decreases and its melting rate increases in varying degree by adding BaO and CaF2; with basicity 4-5, 10%-14% BaO, 23%-28% A12O3  and 5%-10% CaF2, the refining slag has lower melting point ( about 1340 ℃ ) and larger melting rate (melting time <50 s); with reducing the size of high basicity refining slag particles the melting point of slag decreases and the melting rate increases.

Key words: CaO-SiO2-Al2O3-MgO-CaF2 Base Refining Slag, BaO, Ingredient, Size, Melting Point, Melting Rate