| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a silicon recycling system capable of recycling unprecedentedly abundant silicon from a silicon sludge discharged during a silicon slicing work and of forming silicon accompanied by scarce impurities led by carbon and oxygen and a method for the same.SOLUTION: The provided system comprises: a recovery device S20 for collecting a silicon sludge from an effluent discharged at the time of a silicon ingot slicing work; a microwave heating device S30 for heating the collected silicon sludge by applying microwave thereto; and a melting/solidifying device S40 for melting and unidirectionally solidifying the heated silicon sludge so as to form a silicon ingot. It becomes possible, furthermore, to recycle, by treating the silicon sludge with these devices in proper order, unprecedentedly abundant silicon accompanied by scarce impurities such as carbon, oxygen, etc.</p> |
