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The morning of May 23, 2012, SINOSICO passed the acceptance of the national Ministry of science and technology"863" project, which named Research on key technology of polysilicon by-products. This project including two tasks: “research on preparation technology of fumed silica with high performance " and" research on recycling technology of fumed silica surface treatment and exhaust gas ". This acceptance marks the by-product of polysilicon has made breakthrough progress in SINOSICO.
The byproduct of polysilicon –comprehensive utilization of SiCl4 as technical bottleneck in polysilicon production all the time, even adopted by hydrogenation technology, there is still a certain amount of residual liquid SiCl4 needed to process. The two tasks is to study the use of this part of the four chloride silicon production of fumed silica, not only waste to treasure, to extend the industrial chain, can fundamentally solve the problem of the comprehensive utilization of the by-products of polycrystalline silicon, realizing energy-saving emission reduction, cleaner production.
At present, SINOSICO has built two1250tons of fumed silica production line and a1000 tons / year of fumed silica, becoming the typical demonstration in polysilicon by-product surface cyclic regeneration.

 

 


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