The silicon tetrachloride is produces the polycrystalline silicon the waste material, has the very big destructive effect to the environment, not only can recycle waste to the silicon tetrachloride use, but also can promote the new industrial development.This article according to the silicon tetrachloride and the calcium hydroxide hydrolitic reaction principle, designs the silicon tetrachloride and the calcium hydroxide response prepares the calcium silicate the craft, analyzes in the craft composition comprehensively the silicon tetrachloride hydrolysis system, the ortho-silicic acid dehydration system, the calcium silicate production system characteristic, the research technological process influence factor, through the experiment, the calcium silicate which prepares conforms to the national standards; Has discussed the craft by-product use in this foundation.This article research is helpful to the solution polycrystalline silicon production waste serious contamination concern, also may reduce the polycrystalline silicon production cost large scale, enhances the industrial economic efficiency enormously, to develops our country polycrystalline silicon and the solar energy industry has the extremely vital role.
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