冶金法制备太阳能级多晶硅  

Solar-grade Polysilicon Production by Metallurgy Process

作　　者：姚金江[1] 

机构地区：[1]湖南有色金属研究院,湖南长沙410100

出　　处：《湖南有色金属》2014年第2期52-55,共4页Hunan Nonferrous Metals

摘　　要：作为目前制备多晶硅的主流工艺——改良西门子法,其工业生产技术很成熟,但是高能耗和高生产成本依然是阻碍该过程的主要原因。冶金法具有生产效率高,成本低的优点,这个方法可用来提纯冶金级硅,以制备太阳能级多晶硅。文章介绍了冶金法制备太阳能级多晶硅的主要工艺,结果表明:冶金级硅的各种提纯过程中,没有任何一个能单独制备低价太阳能级硅,但是可以通过把这些过程按照最优化的组合结合在一起,可以实现生产低价太阳能级硅。The modified Siemens process, the main process for polysilicon production, has two main disadvantages： high cost and high consumption which are the challenge for the process development. The metallurgy process, by which the solar - grade polysilieon can by manufactured, is developed under the conditions. And the advantage of metallurgy process is interesting： high effective, low cost. The main method for metallurgy process have been addressed in the paper. The results show that the solar- grade polysilicon can not be achieved by any one method. Therefore, in order to produce solar - grade polysilicon, the methods for metallurgy process should be combined by optimum sequence.

关 键 词：冶金法 太阳能级多晶硅 定向凝固 湿法精炼 

分 类 号：TG11[金属学及工艺—物理冶金]