Features Of Micro Silica (Silica Fume) Micro Silica also known as Silica fume. It is a by product of producing silicon metal or ferrosilicon alloys in smelter using electric arc furnaces. It is a grey coloured powder, pozzolanic in nature. Applications Concrete Industry Refractory Rubber Industry Anti caking agent Pellet Binder
Microsilica (silica fume) is a by-product of silicon metal or ferrosilicon industries, is an amorphous silicon dioxide SiO2. This product reacts chemically with the calcium hydroxide in the cement paste which yields a calcium silicate hydrate gel that significantly enhances strength and durability. The super fine microsilica fills the voids between cement particles creating a very dense, less permeable concrete. Physical characteristics: Color: gray or gray white powder Bulk density: 320-700 kg/m3 Chemical composition: Items SiO2 Al2O3 Fe2O3 MgO CaO Na2O Moisture Content 75-98% 1.0-0.2% 0.9-0.3% 0.7-0.1% 0.3-0.1% 1.3-0.2% Fineness: the fineness of the silica fume is less than 1 1/4m, and the average particle size is 0.1 0.3 1/4m, and the specific surface area is 20 - 28 m2/g. The fineness and specific surface area are about 80-100 times of cement and 50-70 times of fly ash. Maxtech Micro Silica supplies will be as per QCS 2014 (ASTM C1240): SiO2: >/= 92% LOI:
Micro Silica Sand: Micro silica also known as fume, is an amorphous (non-crystalline) polymorph of silicon dioxide, silica. It is an ultrafine powder collected as a by-product of the silicon and ferrosilicon alloy production and consists of spherical particles with an average particle diameter of 150 mm. The main field of application is as pozzolanic for high performance concrete because of its extreme fineness and high silica. Applications : Silica is added to Portland cement concrete to improve its properties, in particular its compressive strength, bond strength, and abrasion resistance. These improvements stem from both the mechanical improvements resulting from addition of a very fine powder to the cement paste mix as well as from the pozzolanic reactions between the silica fume and free calcium hydroxide in the paste. Advantages : Addition of silica also reduces the permeability of concrete to chloride ions, which protects the reinforcing steel of concrete from corrosion, especially in chloride-rich environments such as coastal regions and those of humid continental roadways and runways (because of the use of deicing salts) and saltwater bridges.
Micro Silica
Silica Fume (Micro Silica) is mainly used as cement admixture or concrete binder to improve the performance of cement or concrete with higher strength abrasion resistance, erosion resistance, corrosion resistance and permeability resistance
Micro Silica 30-80 MESH & 150-200 PPM IRON
Micro Silica
Sio2 85% min H2O 2% max LOI 3% max Specific surface Area(B.E.T) : 15,000-22,000sqm/kg Pozz. Activity :110% min Bulk density : 550-700kgs/m3 The high Pozz. activity is easy reactive with cement . when added to cement will greatly improve cement performance. globalsources.com/everwintiles.co Packing : 900-1000kgs/jumboo bag
Product Specification Quality Assurance Product/Description: Microsilica Sl No. Parameters Company Standard 01 Silicon dioxide (SiO2) 88-92% 02 Specific gravity 2.3 - 2.5 03 Fineness passing 45 micron 96-99% 04 Ferric oxide (Fe2O3) 0.10 - 0.20% 05 Carbon (C) 02 -03% 06 Loss on ignition (LOI) 02 -03% 07 Pozzolanic activity 110 - 120% 08 Bulk Density (Lb/ft3) 35 -40 09 Moisture at 1050C 0.3- 0.8% 10 Appearance Grey Powder
The SiO n the micro-silica is an amorphous material so that micro-silica is a small particle with high activity, large specific surface area, and favorable physical and chemical property.
Micro Silica Powder that we offer is well processed and therefore, is the perfect option on which buyers can easily rely. We are named among the renowned Manufacturers, Exporters and Suppliers of Micro Silica Powder. It is formulated under the strict vigilance of experts so as to ensure its accurate composition. One can place retail as well as bulk orders for Micro Silica Powder with us. Description : Silica fume consists of very fine particles. Because of its extreme fineness and high silica content, silica fume is a highly effective pozzolanic material. Being a highly reactive pozzolan, silica fume chemically reacts with the calcium hydroxide present in the cement paste, creating a stronger calcium silica hydrate 'making it sticky'. The result is improved paste to aggregate bond (excellent for shotcrete) and higher concrete strengths. Silica Fume is typically grey in colour and is categorised as a supplementary cementitious material (SCM). Silica Fume is compliant to AS/NZ 3582.3:2002 and is described as a Densified Amorphous Fumed Silica. Typical Uses : Silica Fume can be used to produce all grades of concretes. The chemical and physical properties of Silica Fume can greatly enhance the strength performance and the bonding properties of concrete. Silica Fume can be used in various applications and projects: Commercial, Civil, Mining and Marine projects. Silica Fume is suitable for inclusion in general concrete mix designs and in particular has application in high strength/ performance concretes and shotcrete / spray mixes. Features : The addition of Silica Fume can provide; Increase compressive strength Reduces chloride ion permeability Increase abrasion resistance Enhanced sulphate resistance Improved durability Enhanced resistance to chemical attack and deterioration Increase bond strength
Application of microsilica 1..Microsilica in concrete 2.Microsilica in refactory and ceramics 3.Microsilica in repair products(mortars & grouts) 4.Microsilica in shotcrete 5.Microsilica in oil well groution 6.Microsilica in building external thermalinsulation system 7.Microsilica in active powder concrete rpc cover board.
Multi Minerals Micro Silica is micronized high purity natural crystalline silica. It is inherently bright, white, low in moisture and chemically inert in nature. Due to its hardness, it yields improved durability and burnish resistance. Along with this, our Micronised Silica has excellent anti-foaming properties, sheen control with low resin consumption. Micro Silica Product Range NanoSil 501 (25 Microns | SiO2 97% | Whiteness 93% - 95%) NanoSil 502 (25 Microns | SiO2 95% | Whiteness 90% - 93%) NanoSil 503 (25 Microns | SiO2 95% | Whiteness 85% - 87%) MicroSil 401 (37 Microns | SiO2 99% | Whiteness 93% - 95%) MicroSil 402 (37 Microns | SiO2 98% | Whiteness 90% - 93%) MicroSil 301 (44 Microns | SiO2 99% | Whiteness 93% - 95%) MicroSil 302 (44 Microns | SiO2 98% | Whiteness 89% - 93%) MicroSil 303 (44 Microns | SiO2 96% | Whiteness 85% - 87%) MicroSil 201 (74 Microns | SiO2 99% | Whiteness 93% - 95%) MicroSil 202 (74 Microns | SiO2 98% | Whiteness 89% - 93%) MicroSil 203 (74 Microns | SiO2 96% | Whiteness 85% - 87%) Features: Chemically Inert Controlled Particle Size Naturally Hard Long Self Life
We are exporter of Micro Silica from Turkey . Offering micro silica with 94% - 96% purity. Ideal for various industrial applications. Contact us for details and pricing.
Micro silica from iran
MARKCHEM MICRO SILCIA is composed of silicon dioxide (SiO2), collected from silicon metal and ferrosilicon. Micro Silica will react with the Calcium Hydroxide from the cement, which will form more of the Calcium Silicate hydrate, increasing the strength of the concrete. Using Micro Silica will also increase the durability of the concrete.
a. Name of product : Micro Silica (Silica fume) b. Price of product: negotiable c. Product origin: Kuwait d. Key Specifications/Special Features: SIO2 90-95% e. Harmonization System (HS) Code : f. Minimum Order Size : 100mt g. Packaging details : in bags
We wish to inform you that we have invented a new micro silica powder that has a real chemical effect on concrete, cement and other products. Our factory can make different analyses, purity, density, size as per customer's specifications. Our micro silica powder with silicium criterion of 86 to 94 per cent meets Iranian Standards of 13278 and ASTMC1240 with confirmation from ministry of Road, Housing and Urbanization department. Our product is exported to EU and Asian countries through our offices in Oman, Turkey, Dubai and has got EU approvals. This material is used to protect concretes against corrosion, pressure and electricity conduction and potentially applicable in constructions, hard-melts and polymer industries. Micro Silica is used as a pozzolan material or a part of Portland cement mixture or mineral additives in concrete. Commercially, micro silica is limited to 15-20% of the total mass of cement materials. This amount of micro silica is usually having useful effects in economy, efficiency and cost of concrete, being essential for increasing durability against sulphate attacks, Alkaline Silica extension and thermal cracks.
Silica fume, also known as condensed silica fume or microsilica, is a spherical sub-micron amorphous silicon dioxide used in many applications. Silica fume is a co-product of silicon or ferrosilicon production, consisting of ultrafine (sub-micron), amorphous, non-porous, perfectly spherical silicon dioxide (SiO2) particles, with purity levels of 85 to 99 %. The main effect of these ultra-fine particles is to greatly improve particle packing and produce a highly pozzolanic reaction in concrete and other cementitious bond systems where the silicon dioxide reacts with calcium hydroxide, heightening performance levels and the strength and durability of these materials. Additionally, silica fume, because of its amorphous (non-crystalline) structure and its specific area, provides other useful features to various applications, including improved sintering capabilities and enhanced high temperature performance of refractory castables, resulting in reactions between microsilica and other components of the refractory mix. To summarize, silica fume has two key features which alone or in combination are the basis for its high performance: The nano-sized spherical non-porous particles create an efficient "filler effect" Primary particles have an average diameter of about 0.15 �¼m (150 nanometers) Microsilica is a highly reactive form of silica producing a "chemical effect" Thanks to its amorphous nature and high specific surface area.
Product Description Microsilica 980 U is high purity un-densified product of amorphous type. The extreme fine particle size with average particle Size say around 0.3 Micron & high specific surface area 32.5 m2/kg makes it more vulnerable for its reactivity with cement material attributes higher strength in concrete & refractory products Product Specification Physical appearance : White Ultra fine powder Purity (%) : Min 98 Bulk Density Gm/cc : 0.3-0.6 pH Value : 5.0-6.0 Moisture Content (%) :
