论文名称：Boron removal from silicon by slag refining using Na2O-SiO2 in industrial applications
论文类型：期刊论文
发表刊物：SEPARATION SCIENCE AND TECHNOLOGY
收录刊物：SCIE
卷号：53
期号：13
页面范围：2144-2149
ISSN号：0149-6395
关键字：B removal; metallurgical-grade silicon; slag refining; thermodynamic analysis; kinetic analysis
摘要：Boron (B) removal by slag refining using Na2O-SiO2 was investigated in industrial applications. The experimental results showed that the reasonable ratio range of slag to silicon is about 0.7-0.8; the suitable holding time is about 30min; the concentration of B is reduced from 1.90 ppmw to 0.17 ppmw by three times slag refining; and the removal efficiency of B reaches 91.1%. Moreover, it is discussed that B in silicon is more inclined to be oxidized by Na2O than SiO2 according to thermodynamic analysis and then volatilized to the atmosphere in the form of Na2B2O4 according to kinetic analysis.
发表时间：2018-01-01