Chlorosilane containing impurities emitted from polycrystalline silicon production is taken as raw materials to explore the effects of different content of surfactants(chitosan)on the perfor-mance of soluble silicon fertilizer.A method of"alkali leaching plus hydrothermal"is adopted for preparing soluble silicon fertilizer.The effects of different chitosan content on the properties of solu-ble silicon fertilizer are explored by XRD,SEM and BET.The results show that when the addition of chitosan is 3％,the particle composition of the sample becomes a finer porous structure.The porous structure makes it easier to extract soluble silicon fertilizer with a content of 28.23％.This study pro-vides theoretical support for achieving deep utilization of silicon resources and improving the green production process of polycrystalline silicon industry.
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