从单晶和多晶硅切割废料浆中综合回收高纯硅、聚乙二醇和碳化硅,对减少环境污染、提高资源利用率有一定意义,特别是如能将切割料浆中最有价值的高纯硅得以回收并再用于制造太阳能电池,这对缓解我国太阳能多晶硅的紧缺、减少多晶硅的进口量有重要意义和商业价值.本文简述了单晶硅和多晶硅的生产概况及其切割工艺,重点阐述了国内外切割料浆的回收进展,综合了国内外现有的回收专利技术,将回收工艺概括为固液分离和固体提纯两个主要步骤,并对每个步骤所采用的方法进行了归纳和分类,以供相关企业参考.同时,本文也介绍了国内现有的切割料浆回收企业的概况,以及目前从切割料浆中回收高纯硅的研究进展.
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