microsilica

Description:
the silica fume, which 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 landfilled. Silica fume consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2).

The specification as follows:

Physical character: B.E.T Fineness: 15 - 27m2/g

               Bulk density: 350 -400kg /m3  or 550-700kg/m3

               Pozzolanic activity index: 95%

               Water requirement ratio: 125%

               Retained on 45 micron sieve: 10%

               Moisture: 3%

Chemical component: SiO285; Cl0.02;  MgO2.0;  Fe2O30.9;  Al2O30.8;  CaO2.0;  K2O2.0;  Loss on Ignition6.0

SiO2 content: 85% -95%  

Bulk density: undensified  150-200 kg /m3; semi-densified  300-400 kg /m3; densified  550-700 kg /m3  

Usage: In the concrete project, the quantity according to the application, usually suggest to be mixed into 5-10% cementation material, together with water reducing reagent.

Application: when microsilica being mixed into concrete, can improve the intensity and comparatively; also can resist frost, corrosion and scouring abrasion; and make the concrete get early strength.

If you have any questions, please do not hesitate to contact us.

Place of Origin:	China(Mainland)
Brand:	lixinyuan
Model No. :	silica fume
Payment Terms :	T/T or L/C
Quantity:	2000tons/m
Minimum Order :	one container
Price Terms :	FOB tianjin
Packaging:	25kg/bag;800kg/bag or 900kg/bag
Delivery Lead Time :	15days after payment or receiving L/C