96% Undensified Silica Fume
96% Undensified Silica Fume
96% Undensified Silica Fume is a micro-silica fume with 96% SiO2 content, and the Bulk density is 240-320kg/m³.
96% Undensified Silica Fume (Microsilica 96D) is a high-performance pozzolanic material that is produced as a byproduct of the production of silicon metal and ferrosilicon alloys. It is a fine-grained, amorphous powder that contains over 96% silicon dioxide (SiO2). The specific surface area of 96% Undensified Silica Fume is extremely high, ranging from 25,000 to 30,000 m2/kg, making it an ideal additive for a variety of high-performance applications.
You can also choose our dense silicon powder, which can be customized according to user needs.
96% Undensified Silica Fume Properties
Microsilica grade 96 is produced purposely as a separate product, aimed for stable properties and very low impu- rity levels. Our 96% Undensified microsilica is also produced with special attention towards microsilica quality.
The high purity 96% undensified silica fume makes it particularly suitable for its use in refractory applications. The low content of carbon (giving the light colour) ensures good flowability of the castable. The amount of alkalies is also very low, preventing softening at high temperatures.
96% undensified microsilica is the standard high quality grade offered to the refractory industry. It is globally available either as densified (D) orundensified (U). It is a versatile quality for use in advanced refractory products such as low and ultra-low cement castables. The colour is light grey with a low amount of impurities.
Another important characteristic is stable pH-values, giving castables with regular and predictable setting properties.
Ewende 96% undensified Microsilica is manu- factured on a campaign basis. It is particularly suited as a cost-effective alternative for low-cement castables. The colour is light grey, with a control- led and stable chemical composition.
Quality Assurance Microsilica is produced, packaged and shipped under strict control according to the Quality Management System. The system is certified according to the ISO 9000 series.
96% Undensified Silica Fume Parameters
|National Standards for Silica Fume for Concrete|
|National Standards and Organizations||Europe||Norway||France||Australia||United States||Canada||Japan||China|
|Standard Code||CEN EN||NS||NF||AS||ASTM C||CSA||JIS||GB/T||GB/T|
|SiO2 % ≥||85||85||85||85||85||85||85||85||85|
|SO3 % ＜||2||2.5||3||1||3|
|CI－ % ＜||0.3||Report||0.2||Report||0.1||0.1||0.1|
|CaO % ＜||1||2||1|
|MgO % ＜||5|
|Si % ＜||0.4||0.4|
|Na2O+K2O % ＜||4||1.5|
|C % ＜||4|
|Water Content % ＜||2||3||3||3||3|
|Burn Vector % ＜||4||5||6||6||6||5||6||4|
|Specific Surface Area ㎡/g||15-35||≥12||20-35||≥15||≥15||≥15|
|45μm Sieve Residue % ＜||10||10||5|
|Loose capacity kg/m³||Report||Report|
|Specific Gravity g/㎝³||2.1-2.3||Report|
|Water Demand Ratio % ≤||125||125|
|Volcanic Ash Activity Index||%（3d) ≥|
|Water to Glue Ratio||0.5||0.5||0.484||0.5||0.5||0.5|
96% Undensified Silica Fume Application
The high resistivity and low permeability of micro-silica sprayed concrete in the project can reduce the corrosion of steel bars and wire mesh by chlorides, reduce the amount of rebound, reduce permeability, and improve the durability of freezing and thawing. Improved bending and compressive strength.
Micro silica fume can be used as a binder, active agent and mineralizer for refractory materials and kiln furniture materials, which is conducive to improving the solid-phase reaction and sintering driving force of refractory materials, enhancing the reaction speed and sintering density of materials, and is conducive to crystal transformation. performance of the material.
Using silica fume as the main raw material to prepare composite silicate thermal insulation materials has gradually become a hot spot in the application of silica fume. Composite silicate thermal insulation coating is one of the most widely used thermal insulation coatings at present. It belongs to barrier type thermal insulation coating.
Silica fume can improve the performance of concrete mixture, reduce air bubbles on the surface of concrete, improve the strength of concrete surface, make the surface of concrete smooth, inhibit the carbonation of concrete, resist the erosion of harmful external media, and help improve the durability of concrete. help improve the durability of concrete.
By adding micro silica fume, optimizing concrete mix ratio, temperature control and other technical means, the PHC pipe pile can be realized without high-pressure steam curing and energy-saving technology, which not only simplifies the process, but also greatly reduces coal and electricity consumption, and also reduces carbon dioxide. emission.
Concrete mixed with silica fume is mainly used in water cushions, ponds, flood discharge tunnels and other parts. As an auxiliary cementitious material, microsilica fume can significantly improve the strength of cement stone in the concrete matrix, and at the same time greatly improve the relationship between cement stone and aggregate. between the bond strength.
Adding micro silica fume to oilfield cement can improve the thermal stability of oilfield cement, change the C/S ratio of cement, and change the composition and structure of cement hydration products. With the addition of different amounts and ambient temperatures, it can be obtained A series of hydration products with good stability, high strength and low permeability.
There is no fine sand in the permeable concrete, and the porosity is relatively large. A small change in the water-cement ratio of the blank sample can cause a large change in the fluidity of the mixture. The water-cement ratio is difficult to control, and the water-cement ratio can be significantly improved by adding silica fume. workability of fresh concrete mixtures.
Micro silica fume is used in high-grade high-performance low-cement refractory pouring materials and prefabricated parts. The service life is three times that of ordinary castables, the refractoriness is increased by about 100°C, and the high-temperature strength and thermal shock resistance are significantly improved. It has been widely used in ceramic industries.
Micro silica fume is used for agricultural fertilizer and improved soil varieties. Micro-silica fume is mixed with potassium hydroxide or potassium carbonate and heated to make potassium silicate slow agricultural fertilizer. It is not easy to volatilize and lose, can protect the soil, promote the development of crop roots, and inhibit pests and diseases.
96% Undensified Microsilica For Refractory
The use of silica fume in refractory castables provides better particle packing. It allows for less water to be used while maintaining the same flow characteristics. It also promotes low-temperature sintering and the formation of mullite in the matrix of the castable. This produces a castable that has a low permeability to avoid gas, slag and metal penetration. Castables incorporating silica fume are stronger than non-silica fume-containing castables, especially at high temperatures with higher density they attain lower porosity and are more volume stable.
Advantages Of adding Silica Fume ( Microsilica ) In Refractory
● Silica fume in refractory is used in unshaped refractories
● Silica Fume in refractory is used in gunned refractory materials to improve adhesion in castables and minimize rebound
● Silica fume in refractory is used in shape refractory
● Very low permeability to chloride and water intrusion.
● Extremely high electrical resistivity (20 to 100 times greater than ordinary concrete).
● Increased abrasion resistance on decks, floors, overlays and marine structures.
● Superior resistance to chemical attacks from chlorides, acids, nitrates and sulfates.
96% Undensified Silica Fume Packaging
Silicon Powder for Sale
Ewende is one of the leading silica fume suppliers in China, all grades of silica fume for sale are quality assurance, our microsilica price is very competitive in the market, contact us to buy 96% Undensified Silica Fume or get silica fume price per kg now!
Silica Fume Supplier - Ewende
Ewende is one of China’s leading micro silica producing companies. We supply high-performance Silica Fume products to concrete and refractory industries all around the globe.
We specialize in the production of densified and undensified silica fumes. Over time we have established a strong clientele network as a result of our quality products. But what makes us different from other micro silica companies?
Contact Ewende to get your quality silica fumes today.
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