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Silica fume, also known as microsilica, is a byproduct of production of silicon and ferrosilicon alloys. Because of its extreme fineness and high silica content, silica fume is a highly effective pozzolanic material.
HS No. 28112200 China Origin

SiO2:    85 to 97 %

Density: 100 to 650   kg/ m3  
         (Densified Silica Fume and UnDensified Silica Fume)

Packing: Jumbo bags of 900kg/bag (20 bags per 20 FCL) 
         or 20kg or 25kg small plastic woven bags.

Payment: T/T or L/C at sight 
         (or CAD or D/P at sight with 30% deposit before shipmt ). 

Delivery: We have warehouse in Guangzhou, Shanghai, Tianjin has stocks. 
          so that we can load goods into container once we receipt the payment.

silica fume in concrete industry application silica fume in refractory industry application silica fume in rubber industry application silica fume as anti-caking agent silica fume as pellet binders silica fume in water glass industry silica fume in drilling industry and other fields.