|Andalusite is an alumino - silicate mineral belonging to the sillimanite family, commonly found in metamorphic rocks. |
|Andalusite presents three main properties :|
Andalusite is a prismatic and anhydrous crystal,
Andalusite is a high purity mineral,
Andalusite transforms into mullite at low temperature, between 1200 and 1550░C for micronized grades.
For refractory applications, Andalusite usage provides many advantages :
Very good creep resistance and refractoriness under load,
High thermal shock resistance,
Good chemical attack and slag and metal penetration resistances.
Due to these characteristics, Andalusite is used for a large range of applications. The refractory industry is the main primary user, andalusite being a component of both shaped and unshaped refractories. The steel, glass, aluminium and cement industries are the main end-users. Thanks to a customised range of products, andalusite is also used for technical ceramics and foundries applications.