Silica Grains
We feel proud to introduce ourselves as one of the prominent organizations engaged in offering superior quality Silica Grains. We have installed several checkpoints to avoid any mishandling in the input process. Owing to its purity and accurate composition, this powder is extensively used in manufacturing glass and finds numerous other applications in various industries, such as paint, potteries, glass, and refractory. We are a well-known name in the industry, offering Silica Grains ranging in size from 0.3 mm to 2.5 mm. These grains are processed using pure sand and the latest equipment to obtain pure quartz. To ensure quality and purity, the product is examined using various quality parameters.
Silica Grains / Sand for Foundry Industry
The natural silica sand is the most preferred material in the glass industry, but in some cases where the glass plants are located far away from silica deposits, crushed quartz is also used. For use in the glass industry, the silica sand must be uniform in chemical composition, size, and shape of grains. Uniform grain size promotes even melting in the glass tank. The sand should not be coarser than 20 or 30 mesh, nor finer than 100 to 120 mesh. Very fine sand may be carried away by drafts in the melting furnace. Both angular and rounded grains are used in the glass trade. As a general rule, the grains should be angular rather than rounded, as they melt more readily than the rounded ones.
Silica Grains / Sand for Foundry Industry
Natural molding sand contains variable amounts of clay, which acts as a bond between the sand grains. This sand, therefore, possesses strength, plasticity, and refractoriness to varying extents depending on the clay minerals present. When it contains a greater amount of clay, it is blended with river sand, which is relatively clay-free, to achieve the optimum properties desired in the sand mixture.
Silica Grains / Sand for Sodium & Potassium Silicate Industry
Sodium silicate is produced by fusing silica sand or quartz powder (20 – 100 mesh), analyzing 99% SiO2 and less than 0.25% Al2O3, 0.03% Fe2O3, and combined CaO/MgO content of 0.05%, with sodium carbonate at 1200° C to 1400° C. The ratio of Na2O3 can be varied to obtain a wide range of products.
Silica Grains / Sand for Ferro-Silicon Industry
Quartz suitable for ferro-silicon production should contain more than 98% SiO2, less than 0.4% Al2O3, and not more than 0.2% each of Fe2O3, CaO, and MgO. Neither phosphorus nor arsenic should be present in quartz. These impurities affect reduction in the electric furnace. Alkali has a tendency to promote sticky slag that contaminates the products.
Silica Grains / Sand for Refractory Industry
Quartzite is used in the manufacture of acid silica bricks, as it has high refractoriness. Refractoriness is lowered by the presence of fluxes such as lime, iron oxide, magnesia, and alkalies. The purity of the raw material, i.e., the high silica content, is essential, with the least possible Al2O3. The presence of 0.01% Al2O3 lowers the refractoriness of silica.
Silica Grains / Sand for Iron and Steel Industry
Quartzite is added to the blast furnace charge to correct the silica-alumina ratio. The size of quartzite chips ranges from 10 to 80 mm. The silica content should be 94% minimum, and alumina 1% maximum. Some steel plants also use banded hematite quartzite in place of quartzite.
Silica Grains / Sand for Cement Industry
In the cement industry, silica sand and crushed sandstone are used as additives to make up for silica deficiencies in the raw mill. The silica content should be 65 – 98%, Fe2O3 0.5- 6%, Al2O3 3.58 – 0%, MgO 1- 1.05%. Standard sand as a fine aggregate of particular specification is used for assessing the quality of cement in the laboratory through comprehensive strength tests.
Silica Grains / Sand for Fertilizer Industry
Silica sand is used in the fertilizer industry as a filler to balance fertilizer grades. There are no rigid specifications for this industry. The size of silica sand should be 18 – 100 mesh, with an SiO2 content of 80% minimum and moisture of 1% maximum. In some cases, even river sand is used.
Silica Grains / Sand for Ceramic Industry
Quartz is used in the ceramic industry to reduce shrinkage in drying and firing, and to impart rigidity to the body. Iron is the most deleterious constituent, and it should be as low as possible. If Fe2O3 is more than 0.1%, dots will form on the ceramic body, and in the case of electrical insulators, current may pass.
Silica Grains / Sand for Silicon Carbide and Other Abrasives
Silica sand and quartz are used in the manufacture of silicon carbide grains. The sand should contain more than 99% SiO2, less than 0.1% each of Fe2O3 and Al2O3, and no lime, magnesia, or phosphorous. Similarly, quartz should contain 99.50 – 99.75% SiO2, 0.04 – 0.05% Al2O3, 0.05 – 0.10% Fe2O3, and 1.10% CaO and MgO. Quartz is also used for the manufacture of sandpaper / cloth.
Silica Grains / Sand for Paint Industry
According to the BIS specifications (IS: 67 – 1979), the material should be of two types, namely, crystalline and amorphous. The material shall contain not less than 98% SiO2, and it shall be in dry powder form. The lead content in SiO2 shall not exceed 0.03%. Color, whether natural or dyed, shall not fade with exposure to the atmosphere or when heated to 100° C.
Silica Grains / Sand for Chemical Industry
Quartz with +96% SiO2 is used in the manufacture of phosphorus pentasulfide. Silica sand with +99% SiO2 and free of iron is used in the manufacture of ultramarine blue.
Silica Grains / Sand for Asbestos Products Industry
Silica powder with +97.5% SiO2, 0.8% Fe2O3, and 1.5% CaO is used as one of the constituents in the manufacture of asbestos-cement sheets and pipes.
Silica Grains / Sand for Insecticide Industry
Silica sand with +95% SiO2 is used as a carrier in the insecticide industry. The size of silica sand granules needs to be -15 +30 mesh. However, the specifications for this industry are not very rigid.
Silica Grains / Sand for Electrode Industry
Silica sand or quartz powder is used as one of the components of welding flux mixture in the electrode industry, and for this purpose, the silica minerals should contain 97.5 – 99.5% SiO2, 0.05% (max.) Fe2O3, 0.03% (max.) S, having +100 – 200 mesh size.
Silica Grains / Sand for Coal Washery Industry
In coal washery, silica sand is used as one of the ingredients in the flotation process of coal. Sand with a constant density of more than 2.64 is used. Grains must be sub-angular to round.
Silica Grains / Sand for Paper Industry
Silica sand with +98% SiO2 and -100 mesh size is used in the paper industry for coating paper to provide gloss and smoothness.
Silica Grains / Sand for Battery Industry
Silica sand or quartzite is used as a raw material in the manufacture of battery containers.
Silica Grains / Sand for Electronic Industry
Quartz and high purity silica sand are used in the electronic industry for the production of silicon wafers and other advanced materials.
Silica Grains / Sand for Rubber Industry
Silica sand with +98% SiO2 and -100 mesh is used as a filler in the rubber industry.
