Micro Silica Fume, Grey or Dark Color, Fine Pozzolanic Material, Used in a Variety of Cementation Pr

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````````````````````````````````````````````````````````````````````````````````Specifications
Micro silica fume
1, high purity.
2, Density: 1600-1700.
3, Best quality, competitive price.
4, As your requirement. Micro silica fume
1, Refractoriness > 1600° C
2, Density: 1600 ~ 1700 kg/m3
3, Best quality, competitive price.
4, As your requirement.
The definition of micro silica fume:
Micro silicon powder is also called the silicon ash or condensed silica fume, is ferroalloy smelting ferrosilicon and
Industrial silicon, silicon metal, ore heat furnace to produce a large number of volatile strong silicon dioxide and
Silicon gas, gas emission and air oxidation quickly after condensation precipitation.
It is a by-product of big industrial smelting, the whole process need to recycle with dust environmental protection
Equipment, because the quality is light, also need to use encryption device encrypted.
Micro silica fume chemical properties:
(1) micro silicon powder: Appearance is gray or gray powder, refractoriness > 1600 ° C. Density: 1600 ~ 1700 kg/m3.
(2) the micro silicon powder fineness: Silica fume in the fineness of less than 1 um accounted for more than 80%, the average particle size in 0.1 ~ 0.3 um, specific surface area: 20 to 28 m2 / g. about 80 ~ 100 times of the fineness and specific surface area of the cement, 50 ~ 70 times of fly ash.
(3) the particles morphology and the ore phase structure, when micro silicon powder is in the process of formation, by phase transformation in the process of the effect of surface tension, formed an amorphous phase and amorphous and the surface is relatively smooth, some are more sphere particles stuck in the aggregate. It is a kind of specific surface area is large, active substances of very high ash. Mixed with micro silicon powder material, tiny globule can play the role of lubrication.
The application of micro silica fume:
(1) used in mortar and concrete, high-rise buildings, harbor wharf, DAMS, water conservancy, sluice gate, railways, highways, Bridges, subway, tunnel, airport runway, concrete road, and mine rockbolt and reinforcement, etc.
(2) materials industry:
(a) high performance low cement refractory casting and casting, the service life is three times that of ordinary castable, refractory degree increases by about 100 ° C, high temperature strength and thermal shock resistance are improved significantly. Has been widely used in: Coke, iron and steel smelting, steel rolling, non-ferrous metal, glass, ceramics and power generation industries.
(b) a large iron ditch and ladle, air brick, daub repair material, etc.
(c) gravity type fireproof materials and dry wet jet construction application.
(d) oxide combined with silicon carbide products (ceramic kiln kiln furniture, muffle board, etc. ).
(e) type high temperature calcium silicate lightweight insulation materials.
(f) electric kilns with corundum mullite push board.
(g)high temperature resistant materials and products.
(h) corundum and ceramic products.
(I) native products. At present except in type casting refractory material widely used, the fused and sintered refractories also get a lot of application AnalysisResultSF85SF88SF90SF92SF94SF96SF97SF98SiO2(%)(min.)85.0588.0599.0592.0594.0596.0597.598.5Fe2O3(%)0.780.440.210.250.200.200.100.20Al2O3(%)0.290.200.210.250.200.200.200.20CaO(%)0.390.300.360.300.300.300.300.30K2O+Na2O(%)0.290.240.220.200.200.200.200.20Moisture(%)3.052.552.052.051.851.251.001.00LossonIgnition(L.O.I)@975OC(%)4.383.382.382.382.281.881.551.50