VERFAHREN UND VORRICHTUNG ZUR WÄRMEBEHANDLUNG VON GLASMATERIAL UND NATÜRLICHEN MATERIALEN INSBESONDERE VULKANISCHEN URSPRUNGS

A method of heat treatment of glass materials and natural materials specifically of volcanic origin according to which the treated material is exposed to microwave radiation at a frequency range from 1 MHz to 10 GHz and temperature range from the ambient temperature to 1800° C. in a batch or continu...

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Bibliographische Detailangaben
Hauptverfasser:	VOLF, VACLAV, HAJEK, MILAN, DRAHOS, JIRI, VOZAB, JAROSLAV
Format:	Patent
Sprache:	ger
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FURNACES GLASS HEATING JOINING GLASS TO GLASS OR OTHER MATERIALS KILNS LIGHTING LIME, MAGNESIA MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES MECHANICAL ENGINEERING METALLURGY MINERAL OR SLAG WOOL OVENS REFRACTORIES RETORTS SLAG SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	A method of heat treatment of glass materials and natural materials specifically of volcanic origin according to which the treated material is exposed to microwave radiation at a frequency range from 1 MHz to 10 GHz and temperature range from the ambient temperature to 1800° C. in a batch or continuous process. The glass or natural material subjected to a melting and/or refining process contains an inert additive elected from the group comprising carbides, nitrides or borides in an amount from 1 to 100 g preferably 5 to 50 g per 1 kg of the glass or natural material. The apparatus consists substantially of a microwave furnace comprising an outer shell ( 8.2 ) provided with a cover ( 10 ) and an inner shell ( 8.1 ) and at least one micro wave generator ( 1.1, 1.2, 1.3, 1.4 ) with double emission and total power from 0.1 to 1 kW per 1 kg of the treated material.