Silika tozu

Micro silica & Silica Fume
SiO2 85% -95% min
Surface area: 15-27m2/g
Bulk density: 600-700kg/m3

1. Silica fume Introduction:
Silica fume is a byproduct of producing silicon metal or ferrosilicon alloys. One of the most beneficial uses for silica fume is in concrete. Because of its chemical and physical properties, it is a very reactive pozzolan. Concrete containing silica fume can have very high strength and can be very durable. Silica fume is available from suppliers of concrete admixtures and, when specified, is simply added during concrete production. Placing, finishing, and curing silica-fume concrete require special attention on the part of the concrete contractor.
Silicon metal and alloys are produced in electric furnaces. The raw materials are quartz, coal, and woodchips.

2. Silica fume 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. Silica fume Specifications:

Silica fume 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.