15Jan 2018 by admin

Specific surface area of cement

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The surface area of the cement particles of unit mass is called the specific surface area of the cement. It is represented by square centimeters per gram (cm2/g) or square meter per kilogram (m2/kg). The specific surface area of the cement is related to the fineness of the cement. The thinner the cement grind, the larger the specific surface area,…
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15Jan 2018 by admin

Where to buy silica fume particle size?

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Silica fume is a kind of smoke gray ultrafine powder. With the carbon content, the color changes slightly. The bulk density of white 40-50 is about 200kg / m3, and the true density is 2.2 g/cm3. The vast majority of microsilica particles is less than 1 um, finest is 0.01 um, the measured surface area is 26 - 36 m2…
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11Jan 2018 by admin

Silica Fume Composition

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The primary component of silica fume is amorphous silicon dioxide SiO2 in a range of 85 % - 98 %. The main impurities include carbon, silicon carbide and oxides of alkaline (earth) metals. As silica fume is generated from raw materials which inevitably vary in composition depending on the source, the impurities will also individually vary up to a maximum…
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11Jan 2018 by admin
Physico-chemical of Silica Fume

Physico-chemical of Silica Fume

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Silica Fume is an ultrafine powder. Primary silica fume particles that exhibit a perfectly spherical shape are in the size range of 0.02 - 1.0 µm (average particle size 0.15 µm). During collection, cooling and bagging, the primary particles form larger agglomerates (not aggregates), as shown in the Transmission Electron Microscopy (TEM) pictures. The specific surface area (BET) is typically…
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10Jan 2018 by admin
Low price Microsilica 85 grade

Low price Microsilica 85 grade

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Silica fume is a very fine powder - the particles are approximately 1/100 the diameter of portland cement grains. When used to produce high-performance concrete, silica fume is typically 4-15% of cement weight. The exact addition rate depends upon the specific performance characteristic to be improved. Compared to the other ingredients in concrete, the amount of silica fume used is…
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09Jan 2018 by admin
Undensified microsilica factory

Undensified microsilica factory

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Bulk Density:300-350kg/m3 SiO2: 88% - 97%min 500kgs/jumbo bag, 25kg/PP bag, or as customer's request Introduction Micro silica ,also called silica fume or micro silica, is a byproduct of production silicon metal or ferrosilicon alloys. Silicon metal and alloys are produced in electric furnaces.The raw materials are quartz,coal and woodchips.The smoke that results from furnace operation is collected and sold as…
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08Jan 2018 by admin
China undensified silica fume supplier

China undensified silica fume supplier

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The undensified silica fume is produced by the condensation of gas and dust released by metal silicon at high temperature. It has the characteristics of large specific surface, high activity and strong micro aggregate. Because of its low accumulation density, about 200 kilograms per cubic meter, the volume of densified silica fume is larger than that of the same weight,…
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08Jan 2018 by admin
Low price white microsilica for sale

Low price white microsilica for sale

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According to different application, Henan Superior Abrasives supply different grade microsilica /silica fume. Henan Superior Abrasives white silica fume is applied to the compound fertilizer, pesticide (as adsorbent, or producting silicon fertilizer), coating, paint (as a thickener, anti-sinking agent), rubber (as reinforcing agent), plastic (as the filling agent), special porcelain, can substitute the white carbon black and reduce the cost.…
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08Jan 2018 by admin
Microsilica for castable factory

Microsilica for castable factory

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It is widely used in high performance refractory castables, silicon nitride sintering aids, ladle materials, self flow refractory castables, prefabricated parts, low or no cement castables and dry wet spraying materials, with high quality micro silica fume with ultra-fine particle size, low water storage and high fluidity. The specific performance and effect: can binder as refractory material and kiln materials,…
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