(1)Raw material of find chemicals(precipitated silicas,silica gels,colloidal silicas,zeolites and

molecular sieves,silica catalysts,sodium metasilicate and catalyst,adhesives and binders)

(2)as accelerated agent,reinforcing agent,seepage control agent in cement and construction materials;

(3)detergents and soaps

(4)pulp and paper;

(5)drilling;soil stabilization;

(6)high temperature binder in foundry.