Micro-silica fume, also known as silica fume, in the high temperature of 2000 degrees under the oxidation of the formation. Ultrafine high purity amorphous silica, observed under electron microscopy its shape is spherical, amorphous amorphous, the average particle size of 0.2 microns. Has excellent physical and chemical properties.Send Inquiry
Micro-silica fume, also known as silica fume, in the high temperature of 2000 degrees under the oxidation of the formation. Ultrafine high purity amorphous silica, observed under electron microscopy its shape is spherical, amorphous amorphous, the average particle size of 0.2 microns. Has excellent physical and chemical properties.
Micro-silica fume for the improvement of refractory materials have been more than 40 years of history, micro-silica fume for refractory materials will have the following characteristics:
1. To improve the flow of refractory castable, reduce water consumption, making it easy to shape, greatly improve the production efficiency;
2. Due to its ultrafine structure of the interstitial effect, the compactness and strength of refractory material has been greatly improved;
3. Micro-silica fume with high activity, in the presence of Al 2 O 3 composition, the more easy to produce mullite phase, so that refractory high temperature strength, thermal shock significantly improved.
1).Appearance is as grey&white off.
2).High electrical resistivity
4).Superior resistance to chemical attack from chlorides,acids and sulfates
5).Low chloride ion diffusion
6).High reactive Pozzolan
7).High temperature strength
8).Improved stability ingeothermal environment
Microsilica in application of Refractories
Traditional refractories in many pores,microsilica fume filling in the pores ,increased bulk density and porosity of lower intensity can significantly enhanced.
Microsilica with strong activity in the water yo form colloidal particles,adding suitable dispersant can be strengthened liquidity, thereby improving performance casting.
Microsilica fume formed easily in the water-Si-oh and has strong hydrophilicity and activity can enhance the coshesion refractories, at the same time, high temperature performance major improvements, and extens the life of refractory products.
Microsilica fume widely used in the refractory industry following.
Replace aluminum oxide mud for refractories.
As additives production unshaped and amorphous refractory products,its strength,high temperature performance greatly improved.
Shing drums for the overall combination of procoagulant casting agent
Other refractory products cohesion agent, binder, procoagulant agent, additives.
Prevents reinforcing steel corrosion in concrete, due to its extremely low permeability to chloride-ion intrusion and high electrical resistivity.
· Greater impermeability, barring the ingress of moisture, chemicals and other contaminants
· High early strengths, assuring increased efficiency and greater cost effectiveness in production of prestressed and precast concrete
· High ultimate compressive strengths (8,000-20,000 psi), proportionate to amount of silica fume and the water-to-cementitious ratio
· Substantially greater resistance to corrosion, abrasion and erosion, chemical attack and freeze/thaw damage.
Techenical Data use for precast concrete with SGS testing
Testing Standrds of Slica fume/Microsilica
Jumbo bag with UV- Proof function and anti-aging character.
20kgs/25kgs Double layers paper bags
10kgs /12kgs water solube paper bag.
It should be stored in a dedicated warehouse that is well-ventilated and dry,and the condition is with waterproof & mostureproof,without ultraviolet radiation attack
Conveniently transport by Road, Railway,Sea, Pay attention to waterproof & moistureproof during transportation.
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Should you have any interest in our rare high purity microsilica / silica fume wt- 97u grade for refractory, welcome to contact us. With over 8 years experience in this field, our factory pays high attention to quality. Please rest assured to buy. Low price, fast delivery and excellent service are offered.