High Temperature Castable Refractory Cement Silica Fume

We are engaged in manufacturing exporting trading and supplying an excellent quality High Temperature Castable Refractory Cement Silica Fume to our valuable clients in Luoyang Henan China. Microsilica also called silica fume or micro silica is a byproduct of producing silicon metal or ferrosilicon alloys. Silicon metal and alloys are produced in electric furnaces. The raw materials are quartz coal and wood chips. The smoke that results from furnace operation is collected and sold as silica fume rather than being land filled. Silica fume consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2) its average granule diameter is 0.15~0.20 Aum specific surface area is 15000~20000 m2/kg and it has extremely strong surface active. Microsilica can be used in a variety of cementation products such as concrete grouts and mortars as well as elastomeric polymer refractory ceramic and rubber applications. HS No.: 28112200 China Origin microsilica meets the requirements of ASTM C-1240. Microsilica CAS #: 69012-64-2.