Silica Fume(Microsilica)

Silica Fume(Microsilica)£¬ They used in concrete. It can improve concrete¡¯s properties such as compressive strength, bond strength, and abrasion resistance; reduces permeability; and therefore helps in protecting reinforcing steel from corrosion. At the same time, ,silica fume can still be used in the production of refractory and porcelain; to raise intensity and durability, it also can be used in paint, coating, resin, rubber and other high molecular as a filler material to improve the material overall performance.

Silica Fume Silica Fume microsilica microsilica
The Biggest Producer and Supplier in China,Stable Supply, Competitive Price.

Physical Properties

Existence Form Ultra-fine amorphous (non-crystalline) powder
Color Grey white£¨White natural state, with the density increase, the color gradually deepen£©
Specific Surface 15 ¡« 27 m2/g
Bulk Density 500-700kg/m3
Activity ¡Ý85%

The main chemical components
SiO2 £¬content from 82 to 95% £¬the elements include: Fe2O3 ¡¢Al2O3 ¡¢ CaO ¡¢ K2O ¡¢ Na2O ¡¢ MgO ¡¢ C etc.

Used in cement or concrete

SiO2 CaO MgO LOI Moisture Bulk Density Size Packing
82% Min 3% Max 3% Max 6% Max 3%
Max 		550-700KG/M3 >0.044Mm 10% Max 850Kg OR 900Kg Big Bag
SiO2 CaO MgO LOI Moisture Bulk Density Size Packing
85% Min 3% Max 3% Max 6% Max 3%
Max 		550-700Kg/M3 >0.044mm 10% Max 850Kg Or 900Kg Big Bag
SiO2 CaO MgO LOI Moisture Bulk Density Size Packing
88% Min 3% Max 3% Max 3% Max 3%
Max 		550-700Kg/M3 >0.044mm 10% Max 850Kg Or 900Kg Big Bag
SiO2 CaO MgO LOI Moisture Bulk Density Size Packing
90% Min 2% Max 3% Max 3% Max 1%
Max 		550-700KG/M3 >0.044mm 10% Max 850Kg Or 900Kg Big Bag

Used in refractory material

SiO2 LOI Moisture Ph Retain On Seiveno Bulk Density MgO CaO Packing
90% Min 3% Max 1%
Max 		5-10 325:10%
Max 		200-350KG/M3 3% Max 2% Max 500Kg Big Bag