PROCEDE D'OBTENTIONDES BRIQUES SILICA A TENEUR REDUITE DE QUARTZ RESIDUEL

PROCEDE D'OBTENTIONDES BRIQUES SILICA A TENEUR REDUITE DE QUARTZ RESIDUEL

The process comprises homogenising of quartzite with Portland cement or milk of lime and calcium chloride., The proportions give a 1.5-2 percent content of CaO. The formed prods. are dried and fired at a suitable temp. During mixing of the raw materials, a soln.is added of alkaline phosphates or flu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: DRAGOMIR CONSTANTIN,RO, SZABO ANDREI,RO, GHITAU RODICA,RO, PETRUS IOAN,RO, BOGDAN GABRIELA,RO, DARLOGEANU CONSTANTIN,RO, IVASCAN AUREL,RO, CERNAIANU FLORIN,RO, BURTAN NICOLAE,RO
Format: Patent
Sprache:fre ; rum
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:The process comprises homogenising of quartzite with Portland cement or milk of lime and calcium chloride., The proportions give a 1.5-2 percent content of CaO. The formed prods. are dried and fired at a suitable temp. During mixing of the raw materials, a soln.is added of alkaline phosphates or fluorides. This increases the rate of transformation of the quartzite to tridymite and cristobalite.