-
1.发明公开METHOD FOR PRODUCING POLYCRYSTALLINE SILICON FROM A HYDROSILICOFLUORIC ACID SOLUTION AND A PLANT FOR PRODUCING SILICON TETRAFLUORIDE AND POLYCRYSTALLINE SILICON 审中-公开用于生产多晶硅从四氟化硅和多晶硅的制造甲HYDRO FLUOR ACID芯片解决方案和系统
公开(公告)号：EP2172423A4
公开(公告)日：2014-02-26
申请号：EP08826022
申请日：2008-08-15
发明人： CHUKANOV ANDREY PAVLOVICH , SHEVCHENKO RUSLAN ALEKSEEVICH , VAKHRUSHIN ALEXANDER YUREVICH , MANCHULYANTSEV OLEG ALEXANDROVICH , SMETANKINA STELLA VALERIEVNA
IPC分类号： C01B33/033 , C01B33/021 , C01B33/10 , C01B33/107
CPC分类号： C01B33/021 , C01B33/033 , C01B33/103 , C01B33/10705 , C01B33/10794
摘要： This invention relates generally to the area of metallurgy and/ or chemistry and, more particularly, to the technologies and facilities for production of gaseous silicon tetrafluoride and polycrystalline silicon from gaseous silicon tetrafluoride. The technology for production of silicon tetrafluoride from fluorosilicic acid solution includes: generation of acid extract, extract washing, extract drying, extract decompounding, bubbling of unseparated gaseous silicon tetrafluoride and hydrogen fluoride flow through silicon dioxide. The technology of silicon production includes interreaction between gaseous silicon tetrafluoride and magnesium vapour with subsequent separation of the final product. Technical results is as follows: production of silicon with high purity level, increased output of the final product, improvement of environmental friendliness of production process, simplification of the technological process of silicon production, decreased prime cost of the final product.
搜索结果
1 条记录 (耗时 0.008 秒)
