一种四氯化硅生产食品级白炭黑新工艺

A New Technology of Food-grade Silica Production by Silicon Tetrachloride

以多晶硅生产的副产物四氯化硅和水玻璃为原料,在常规生产条件下,以沉淀法生产工艺,生产出具有气相法工艺产品品质的食品级白炭黑,从工艺上彻底解决了四氯化硅制约多晶硅生产的瓶颈问题。本工艺为国内首创,通过了省级科技成果鉴定,并获市级科技进步奖。

To polysilicon production byproduct of silicon tetrachloride and sodium silicate as raw material, under normal production conditions, precipitation in production process, production have spirit phase method technology issued by the product quality of food-grade white carbon black, the pilot production, process production equipment have been completed, completely solve the silicon tetrachloride from craft bottleneck problem of polysilicon production. The technology for the domestic initiative, passed appraisal of achievement of provincial science and technology, and science and technology progress prize at the municipal level.