METHOD FOR PREPARING HIGH-PURITY QUARTZ SAND FROM WASTE QUARTZ CRUCIBLE, HIGH-TEMPERATURE FURNACE AND METHOD FOR PREPARING HIGH-PURITY QUARTZ SAND AND HIGH-PURITY QUARTZ SAND

A method for preparing a high-purity quartz sand from a waste quartz crucible, a high-temperature furnace and a method for preparing a high-purity quartz sand and a high-purity quartz sand, a method for removing a crystallization layer of a waste quartz crucible and a method for preparing a molten q...

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Bibliographische Detailangaben
Hauptverfasser:	LI, Qiao, CHEN, Yongkang, REN, Weikang, DENG, Hao, LIU, Yang
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOUNDS THEREOF GLASS INORGANIC CHEMISTRY JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL NON-METALLIC ELEMENTS SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Zusammenfassung:	A method for preparing a high-purity quartz sand from a waste quartz crucible, a high-temperature furnace and a method for preparing a high-purity quartz sand and a high-purity quartz sand, a method for removing a crystallization layer of a waste quartz crucible and a method for preparing a molten quartz powder and a molten quartz powder, and a method for removing impurity barium from a crystallization layer of a waste quartz crucible and a method for preparing a high-purity quartz sand and a high-purity quartz sand. The method for preparing a high-purity quartz sand from a waste quartz crucible comprises: subjecting a waste quartz crucible to a pre-treatment to obtain a pre-treated quartz sand; bringing the pretreated quartz sand into contact with a chlorination gas in a high-temperature furnace to obtain a chlorinated quartz sand; subjecting the chlorinated quartz sand to a first heating treatment in a high-temperature furnace in an inert treatment atmosphere, with the pressure in the high-temperature furna