sillimanite processing plant manufacturer
Sillimanite Mineral Properties Photos and Occurrence. WebJul 9, 2021 As with andalusite and kyanite, sillimanite is a feedstock mineral for conversion to mullite Al 6 Si 2 O 13 (see extended discussion in Andalusite, Applications chapter). It is considered the best raw material for manufacturing refractory bricks of 55 60% alumina.