SLT silica fume, also known as microsilica, is an amorphous polymorph of silicon dioxide.

It is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production.
Its average granule diameter is around 0.1µm, specific surface area is 15000~ 25000m2/kg and it has extremely strong surface active.

It is a very fine pozzolanic material which can be used in a variety of cementitious products to improve their performances.
(such as concrete, grouts, mortars as well as elastomer, polymer, refractory, ceramic and rubber applications)

SiO2 content: 85%~99.4%

Density: Undensified or densified

              Customer customized  (eg.: 150~200kg/m³,    280~380kg/m³,    600~750kg/m³)

Specific surface area: ＞18000㎡/kg

Particle diameter:  about 0.1μm (average )

Color:  light grey, dark grey etc

SLT Silica fume Application

1) Concrete or Shotcrete

      • Increase its density and strength, improve the performance on its durability,

        impact resistance, corrosion resistance, anti-permeability and frost resistance etc

2) Refractory material & Ceramics material

      • Greatly improve its density, strength and high temperature performance.

3) Cementitous Repair Products (Mortars & Grouts)

       • Low permeability, increase resistance from chlorides, acids, nitrates and sulfate etc

4) Oil Well Grouting

      • Increase durability and compressive strength, decrease permeability, better control of gas leakage

5) Concrete Tile, roofing & wallboard,panels

      • Lightweight and improve the strength

6) Polymers & rubber product

7) other application, such as waterglass industry, thermal insulation material etc.

1. High Silicon dioxide content
      Generally the content is around 94%, also can reach 99%
2. The particle is superfine
      Average particle diameter is about 0.1μm, Only 1% of the cement particles
3. Large specific surface area
      More than 18000m2/kg and with strong surface activity
4. Great fluidity
5. Manufacturer direct and stable quality
      Now we have built 8 production bases with professional laboratory and experienced engineers.
      The annual output of the silica fume amounts to 40000 tons.
      Also we have strict quality control system to make sure the product quality, packing and transportation etc