PROCEDIMIENTO MEJORADO PARA PURIFICACION DE CRISTALES DE SILICIO

PROCEDIMIENTO MEJORADO PARA PURIFICACION DE CRISTALES DE SILICIO

A method for purifying silicon comprises extracting heat from an impure silicon in a metal solvent to provide a solid phase containing silicon in crystal form and to concentrate impurities in a molten phase. After a desired amount of heat has been extracted, a substantial part of the molten phase is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: ROBERT KIMBALL DAWLESS
Format: Patent
Sprache:spa
Schlagworte:
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:A method for purifying silicon comprises extracting heat from an impure silicon in a metal solvent to provide a solid phase containing silicon in crystal form and to concentrate impurities in a molten phase. After a desired amount of heat has been extracted, a substantial part of the molten phase is separated from the solid phase. A fraction or portion of the solid phase is remelted for purposes of removing solvent metal, including impurities, from the crystals, end et least one fraction of the remelted material is separated from the crystals.