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Al-Si合金熔渣精炼过程中Al和B在渣金两相间的迁移与分配规律
葛治; 王志; 孙丽媛; 谢克强; 马文会; 钱伟涛
2018-05-15
Source Publication中国有色金属学报
Volume28Issue:05Pages:1016-1023
Abstract

在1500℃下将Al-Si合金与CaO-SiO_2-Al_2O_3熔渣混合精炼,考察了渣金比、精炼时间对体系中元素Al和B在渣金两相间分配的影响,并解析了这两种元素的迁移过程。结果表明:熔渣40%CaO-40%SiO_2-20%Al_2O_3和60%Al-Si合金在渣金质量比为5时,精炼硅中B含量由302.74×10~(-6)降至23.37×10~(-6)。元素Al和B在渣金两相间的迁移规律基本一致,呈现出明显的阶段性特征。合金中Al元素在精炼10 min内相间迁移最为剧烈,Al的转化率达到96.52%,剩余少量Al以Al-Si相或Al-Si-Ca相存在于硅晶界处;而B元素在精炼30 min内向渣中迁移效果最为显著,迁移比分别为12.32、10.96,继续延长时间二者含量均变化缓慢。Al元素的氧化会改变精炼渣的组成,精炼相同时间时,随渣中w(CaO+Al_2O_3)/w(SiO_2)值增大,精炼硅中B含量呈先下降后上升的趋势,B含量在w(CaO+Al_2O_3)/w(SiO_2)值1.24附近有最小值8.01×10~(-6),此时B的迁移比达到37.80。

Keyword铝硅合金 b 造渣精炼 迁移 分配
Language中文
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28900
Collection中国科学院过程工程研究所
Recommended Citation
GB/T 7714
葛治,王志,孙丽媛,等. Al-Si合金熔渣精炼过程中Al和B在渣金两相间的迁移与分配规律[J]. 中国有色金属学报,2018,28(05):1016-1023.
APA 葛治,王志,孙丽媛,谢克强,马文会,&钱伟涛.(2018).Al-Si合金熔渣精炼过程中Al和B在渣金两相间的迁移与分配规律.中国有色金属学报,28(05),1016-1023.
MLA 葛治,et al."Al-Si合金熔渣精炼过程中Al和B在渣金两相间的迁移与分配规律".中国有色金属学报 28.05(2018):1016-1023.
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