感应熔炼过程中Al杂质挥发传质行为研究OA
Study of volatile mass transfer behavior of Al impurity during induction melting process
金刚线切割废硅粉(DWSSP)是太阳能电池生产中的常见副产物,其高纯化回收已成为业界关注的重点.废硅粉中的主要金属杂质为Al,由于其高饱和蒸气压和低分凝系数,真空精炼和定向凝固技术对其去除效果显著.分析了真空精炼耦合定向凝固过程中Al杂质在熔体、熔体表面及气相中的传质行为,并建立了相应的传质理论模型.此外,提出 了一种非恒定温度下挥发传质的计算方法,降低了传统Scheil方程在预测Al杂质分布时的误差.
Diamond-wire sawing silicon powder(DWSSP)is a common by-product in the production of solar cells,and its high purification and recovery has become the focus of the industry.The main metal impurity in waste silicon powder is Al.Due to its high saturated vapor pressure and low segregation coefficient,vacuum refining and directional solidification technology have a significant removal effect on it.The mass transfer behavior of Al impurity in melt,melt surface and gas phase during vacuum refining coupled directional solidification process is analyzed,and the corresponding mass transfer theoretical model is established.In addition,a calculation method of volatile mass transfer at unsteady temperature is proposed,which reduces the error of traditional Scheil equation in predicting the distribution of Al impurity.
胡志强;张清平;崔艺荣;李鹏廷
大连理工大学材料科学与工程学院,辽宁 大连 116024||大连理工大学辽宁省载能束冶金与先进材料制备重点实验室,辽宁大连 116024大连理工大学材料科学与工程学院,辽宁 大连 116024||大连理工大学辽宁省载能束冶金与先进材料制备重点实验室,辽宁大连 116024大连理工大学材料科学与工程学院,辽宁 大连 116024||大连理工大学辽宁省载能束冶金与先进材料制备重点实验室,辽宁大连 116024大连理工大学材料科学与工程学院,辽宁 大连 116024||大连理工大学辽宁省载能束冶金与先进材料制备重点实验室,辽宁大连 116024
矿业与冶金
废硅粉Al杂质真空精炼多相迁移
waste silicon powderAl impurityvacuum refiningmultiphase migration
《大连理工大学学报》 2026 (3)
257-263,7
山东省重点研发计划资助项目(2024TSGC0172)辽宁省科学技术计划资助项目(2024-MSBA-08).
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