Kyanite/cyanite/disthene   rhoetzite   sappare   /refractory material

Thermal Expansion: In the high temperature volume expansion, when the temperature decreases, the volume change is very small, that there is irreversible transformation of the Department arising from volume expansion properties; stability: the stability of kyanite production of refractory clay refractories than the high one .5 times; refractoriness High: General Clay refractories Refractoriness of 1670-1770 , while kyanite refractories are usually higher than 1790 , the maximum is greater than 1850 ; also has good resistance to chemical corrosion properties .Due to the characteristics of kyanite minerals, so high-level refractory material used to make fine, refractory mortar, cement and foundry-resistant products, and plastic ramming mixes.