MOULDING MATERIAL APPLICABLE AT THE TEMPERATURE HIGHER THAN 2000 C DEGREES AND METHOD FOR REGENERATING SAME AFTER USE

A mixt of 0.2-1 mm dia fire-resistant grain and 19.5 % Na20 and 24.5% A1203 comprising sodium aluminate soln is homogenised, Pressed and dried at 250-500 deg. C. The material can be used at temp greater than 2000 deg. C. Regeneration is carried out by crushing and grinding the used material to the o...

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Bibliographische Detailangaben
Hauptverfasser:	PUSKAS,FERENC,HU, PUSKAS,FERENCNE,HU, RACZ,ATTILANE,HU, RACZ,ATTILA,HU, FEHER,FERENC,HU, LEITNER,LASZLO,HU, PUSKAS,JENOE,HU
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE FOUNDRY MOULDING LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A mixt of 0.2-1 mm dia fire-resistant grain and 19.5 % Na20 and 24.5% A1203 comprising sodium aluminate soln is homogenised, Pressed and dried at 250-500 deg. C. The material can be used at temp greater than 2000 deg. C. Regeneration is carried out by crushing and grinding the used material to the original grain size, wetting, determining the Na20 content and making up the loss by addn of fresh sodium aluminate soln