Method for recycling silicon carbide
OwnerYu-Lung SUN, Yung-Hao LIUinventors
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Abstract
A method for recycling silicon carbide, comprises a filtrating step, providing a siliceous mortar with silicon carbide, silicon and a buffer, and further filtering out the buffer form the siliceous mortar to obtain a siliceous slurry; a first removing step, heating the siliceous slurry to evaporate the buffer and obtain a mixture of silicon and silicon carbide; a dissolving step, placing the mixture of silicon and silicon carbide in an alkaline solution to dissolve the silicon from the mixture of silicon and silicon carbide into the alkaline solution; and a second removing step, completely removing the alkaline solution containing dissolved silicon, in order to obtain purified silicon carbide.
Claims9
A method for recycling silicon carbide, comprising:
- a filtrating step, providing a siliceous mortar with silicon carbide, silicon and a buffer, and further filtering out the buffer form the siliceous mortar to obtain a siliceous slurry;
- a first removing step, heating the siliceous slurry to evaporate the buffer and obtain a mixture of silicon and silicon carbide;
- a dissolving step, placing the mixture of silicon and silicon carbide in an alkaline solution to dissolve the silicon from the mixture of silicon and silicon carbide into the alkaline solution;
- and
- a second removing step, completely removing the alkaline solution containing dissolved silicon, in order to obtain purified silicon carbide.
Dependencies are inferred from the claim text.