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Silica Fume For Decorative Concrete

Silica fume, also known as microsilica, is a byproduct of producing silicon metal or ferrosilicon alloys.

Descrizione

Products Description

Micro silica ,also called silica fume or micro silica, is a byproduct of production 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, silica fume consists primarily of amorphous(non-crystalline) silicon dioxide(SiO2),its average granule diameter is 0.15~0.20um,specific surface area is 15000~20000m2/kg,and it has extremely strong surface active.

Specfication

ITEM	VALUE	UNIT
Specific surface area（BET）	150±20	m2/g
pH Value(4%)	3.7～4.5
Drying reduction (drying at 105℃ for 2h)	≤1.5	wt%
Loss on ignition (at 1000℃ for 2h,after drying at 105℃ for 2h)	≤2.0	wt%
Residue on sieve (45μm)	≤0.04	wt%
SiO2 content	≥99.8	%
Tap-Density(after drying at 105℃ for 2h)	40～60	g/L