Grey micro silica fume for refractory

Description

• Micro silica fume , 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 woodchips. 
• The smoke that results from furnace operation is collected and sold as silica fume, rather than being land filled. 
• Micro Silica fume consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2), its average granule diameter is 0.*5~0.*0 µm,specific surface area is ****0~****0 m2/kg, and it has extremely strong surface active.
• Micro silica fume 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.: *******0 China Origin, micro silica fume meets the requirements of ASTM C****0.
• Micro silica fume CAS #: *********2

• Very low permeability to chloride and water intrusion.
• Extremely high electrical resistivity (*0 to **0 times greater than ordinary concrete).
• Increased abrasion resistance on decks, floors, highways and marine structures.
• Superior resistance to chemical attack from chlorides, acids, nitrates and sulfates.