What is Microsilica ?

Microsilica (silica rage) is a result from silicon metal or ferrosilicon industries,is an undefined silicon dioxide - SiO2 which is created as a gas in lowered electrical bend heaters during the decrease of exceptionally unadulterated quartz. As the liquid metal is delivered, a silica-based gas is discharged. This vaporous smoke, as it rises, cools quickly and shapes very minute,Amorphous, round particles. The microsilica is gathered in a pack house, a framework for sifting the hot air and gases vented from the heater. This gas fume is dense in pack house authorities as exceptionally fine powder of round particles that normal 0.1 to 0.3 microns in width with a surface area of 17 to 30 m2/g.

Actual qualities:

Variety: dark or dim white powder

Recalcitrance: >1600℃

Mass thickness: 320-700 kg/m3

Synthetic creation:

Items SiO2 Al2O3 Fe2O3 MgO CaO Na2O PH normal worth

content 75～98% 1.0±0.2% 0.9±0.3% 0.7±0.1% 0.3±0.1% 1.3±0.2% neutral

Fineness: the fineness of the silica rage is under 1μm, and the typical molecule size is 0.1 - 0.3 μm, and the particular surface region is 20 - 28 m2/g. The fineness and explicit surface region are around 80-100 times of concrete and 50-70 times of fly debris.