Place of Origin : Zheng Zhou,China
Delivery Time : 45
Product Capacity : 6000
Payment Terms : TT,LC

Silica fume, also known as micro silica, is an amorphous (non- crystalline) polymorph of silicon dioxide. It is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production and consists of spherical particles with an average particle diameter of 150 nm1application is as pozzolanic material for high performance concrete. Silica fume is an ultrafine airborne material with spherical particles less than 1 μm in diameter, the average being about 0.1 μm.