Refractory clay bricks ( chamotte refractory bricks )are alumina silicate bricks with the refractoriness of SK 32-34 and contain 35-40% alumina. The bricks are made from various raw material s of fire clay, calcined chamotte, soft clay. We manufacture chamotte bricks using thorough quality control. Shapes and properties depend unpon sevice conditions, becuase the bricks […]
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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
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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
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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
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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
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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
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SGS-CSTC Standards ASTM C 1240-11 Microsilica Fume Testing report
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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
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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
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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
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