Silica fume, also known as microsilica, is a byproduct of the reduction of high-purity quartz with coal in electric furnaces.

1. Introduction:

Silica fume 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.

2. Usage:

Silica fume can still be used in the production of refractory and porcelain; to raise intensity and durability .it also can improve the material overall performance as a filler, used in paint, coating, resin, rubber and other high molecular material.

3. Specifications:

Grade & Specifications	Composition(%)
	SiO2	Specific surface area	L.O.I	Moisture		CL	CL	Bulk Density (kg/m3)
	%(≥)		%(≤)
Standard	85	6.0	3		0.02	1.2	15000	250~350
Lt	90	6.0	3		0.02	1.0	15000	250~350
Size	On the form of Powder
Packing	In 1MT plastic woven bags or as per requirements.

Package,Storage & Handling:

1. Woven fabric bag with plastic liner.Net weight:15kg +/-0.13kg;

2. It should be stored in a dedicated warehouse that is well-ventilated and dry. It remains effective for two years. At the expration, re-use is allowed if the testing results fall within the established range. In case of humidity contamination, re-use is allowed after drying and crushing.

Silica Fume