pour la fabrication de mullite réfractaire pour le verre et les usages de fonderie, kyanite brut en gros

• Personnalisation: Disponible
• Fonctionnalité: Bonne résistance à l′acide, Bonne résistance mécanique, Haute réfractarité, Faible conductivité thermique, Résistance aux chocs thermiques, matériaux de longue durée
• Résistance à la chaleur (℃): 1580< Résistance au feu < 1770
• N° de Modèle.: JUCOS
• Forme: Poudre
• Type: matériau réfractaire
• matériau: al2o3
• Marque Déposée: jucos
• Origine: Chine
• Capacité de Production: 2000t/an

Description de Produit

Product Description

Kyanite is a natural refractory raw material mineral with high refractoriness and large volume expansion at high temperature.There are parallel stripes on the crystal plane. The color is light blue or cyan, bright gray and white. Belongs to high alumina minerals. It has strong chemical resistance, high thermal shock mechanical strength, and irreversible thermal expansion. It is the main raw material for the production of unshaped materials, electric furnace roof bricks, phosphate non-burning bricks, mullite bricks, and low creep bricks.

Characteristics
1.Thermal expansionKyanite mineral is converted into a mixture of mullite and kyanite during heating. In this conversion process, the minerals are accompanied by volume expansion, and a good acicular network of inlite is formed, with a volume expansion rate of 16-18%.
2.stabilityThe stability of refractories produced by kyanite minerals is 1.5 times higher than that of clay refractories. Kyanite refractory bricks have a 43% lower loss than clay bricks and have a life span of 150-200 furnaces longer than clay bricks.
3. High refractorinessGenerally, the refractoriness of clay refractory is 1670-1770ºC, while the refractory of kyanite is usually higher than 1790ºC, and the highest is higher than 1850ºC.4. IrreversibilityThe calcining of kyanite mineral into mullite is an irreversible transformation.

Application

mullite manufacture and foundry uses;
refractories and glassmaking refractories;
ceramics coating;
steelmaking;
glass additive.

escripti

Chemical Analysis	Guaranteed	Physical dedscription and properties
Al2O3,%,min	57	Kyanite-Sillimanite,%	93-94
TiO2,%,max	2.5	Melting point,ºC	~1850
Fe2O3,%,max	0.8	Mullite transformation,ºC	1350-1550
CaO,%,max	0.2	Specific Gravity,kg/m³	3200-3500
MgO,%,max	0.4	Bulk density,kg/m³	1860-1920
Moisture,%,max	0.5	Grain size,mkm	63-100

 

 

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