Linings and purification and method further directional solidification of the silicon melt using the crucible for melt for surface of the refractory crucible for purification of silicon melt

摘要

Crucible for molten silicon, and at least one refractory material having an inner surface, colloidal silica It and a lining deposited on the inside surface with a. Method for purifying silicon, the first silicon inside the melting crucible in order to provide a first molten silicon comprising the steps of melting, at least one of which the melting crucible defining an interior of the melting crucible comprising a first refractory material having a first inner surface, the process; the first molten silicon by the directional solidification in the mold to provide a second silicon comprising the steps of directional solidification, the directional solidification molds comprises a second refractory material having at least one second interior surface defining an interior of the mold, the process; and at least one of at least a portion of the first inner and second inner surfaces, colloidal It comprising the step of coating with lining comprising silica.