Kyanite

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Description

Specification

Description

Kyanite has the unique property of expanding irreversibly when heated. The degree of volume expansion is dependent upon the mesh size of the kyanite product selected. This predictable expansion helps in offsetting the shrinkage of other raw materials and binders employed in the mix and this makes it an important ingredient in the manufacture of refractories.

APPLICATION

Unshaped refractory products

Kyanite

Specification

	Al2O3	SiO2	Fe2O3	TiO2	ZrO2	Na2O	K2O
Guarantee Data	55%		0.85%
Typical Data	56.78%	36.97%	0.70%	1.42%	3.07%	0.02%	0.03%

Product	Chemical Composition （%）
Product	AL2O3	MgO	SiO2	Fe2O3	B.D（g/cm3）	Moisture Absorption（%）
Ceramic Grade	35-37	11-15	47-51	≤1.00	≥1.80	≤20%
Refractory Grade	35-37	11-15	47-51	≤1.50	≥2.00	≤5.5%