silicon dioxide

Product Description

1. Instruction

• 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 woodchips. 
• 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.*5~0.*0 µm,specific surface area is ****0~****0 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.: *******0 China Origin, microsilica meets the requirements of ASTM C****0.
• Microsilica CAS #: *********2

2. Main function 

• Microsilica in refractory enhancing the fluid of pouring refractory, reducing the volume of used water, be easy to shape, and raising the production efficiency.
• Because of its ultra microstructure for gap filling, the compact and intensity of refractory gain rising by a wade margin.
• Microsilica in refractory is a highly effective pozzolanic material, so it's easy to come into being Mullet Phase, under the premise that Al2O3 exists, enhance elevated temperature strength and thermal shock of refractory.
• Microsilica in refractory is used in Microsilica in refractory is used in unshaped,shaped  gunned refractory materials to improves adhesion in castables and minimizes rebound loss.