We are exporter of Calcined Alumina. According to different requirements, five series of products have been formed, including dry pressing, hot die casting, refractory, casting and setting, structural ceramic granulator, etc. It can be widely used in electronic equipment, structural ceramics, refractories, wear-resistant materials, polishing materials and other industries.
We are supplier and exporter of Calcined Alumina. Calcined alumina can be used in the polishing of different alumina products(mainly used in middle, fine polishing).It is also widely used in high-class aluminium refractory material, unshaped refractory materials, high aluminium ceramic product and advanced coating, etc, . Item Al2o3 % Na2o % Sio2 % Fe2o3 % D50 A4m 99.8 0.1 0.05 0.02 3.1 Alumina (Al2O3), the industrial Al2O3 is prepared from alumina (Al2O3, 3H2O) and hard alumina, and the Al2O3, which is high in purity, is usually prepared by chemical methods. Al2O3 has many isomorphic crystals, and there are currently more than 10 known types, mainly three types of crystal, namely gamma-al2o3, beta-al2o3, alpha-al2o3.Which structure is different, with different properties in high temperature above 1300 s almost entirely into alpha Al2O3.
Aluminum oxide Alumina powder for Electric vacuum tube shell ceramic Al2O3 item value Classification ALUMINA CAS No. 1344-28-1 Other Names Alumina MF Al2O3 EINECS No. 215-691-6 Grade Standard Electron Grade, Industrial Grade, Reagent Grade Purity 99.5% Appearance White powder Application electronic ceramics Color White Grade Industrail Grade Density 3.5 g/cm3 Melting point 2054 Boiling Point 2980 Molecular Weight 101.96 Shape Ionische Water Solubility Hard Packing 25 Kg Pp Bag or plastic barrel Sample Availiable
Metallurgical Analytical grade calcined Alumina (sandy type) having purity 98.5 minimum
Fire clay & High Alumina bricks are special type of brick which are form of Refractory ceramic material. It is used for inner surface lining of Boiler, furnace, kiln, fireplaces & fireboxes. Quality of Bricks: We offer various quality bricks are IS-6, IS-8, PI - 30% to 90% Alumina offering high temperature resistance of 1100 C to 1700 C. Standard Sizes (inch): 9*4.5*3 / 9*4.5*2.5 / 9*4.5*2 / 9*4.5*1.5 / 9*4.5*1 Side Arch / Side Tapper, End Arch / End Tapper Sizes (inch) 9*4.5*3/2.75 9*4.5*3/2.50 9*4.5*3/2 9*4.5*3/1.5
We deals in the following Chemicals :- Alumina Silica ( Cenosphere ) Powder Fly Ash Powder Ilmenite (Synthetic Rutile) Hematite / Iron Oxide Powder, Iron Oxide ( Ferric Oxide ) Barite Powder, Barite Ore Dolomite Powder Mica Powder, Mica Flakes, Mica Blocks, Mica Sheets Quartz / Silica Powder, Quartz / Silica Lumps, Quartz / Silica Granules, Quartz / Silica Grits Bentonite Powder, Bentonite Lumps, Bentonite Granules, Bentonite Clay Calcium Carbonate Powder Magnetite, Cellulose Fibers, Cellophane Flakes, Walnut Shells
Grinding, blasting, and cutting processes, as well as the production of refractory materials, all employ alumina. We are proud to be the world's largest fused alumina producer and supplier. It is also known as fused aluminium oxide Alumina is found in the regions of Odisha, West Bengal, Kerala, Uttar Pradesh, Maharashtra and Tamil Nadu. There are several physical properties of alumina. It is high in hardness with the value of 9 on Mohs scale. It has sharp-edged grains, a high load bearing capacity, strong shock resistance, and thermal and chemical stability, besides their superior hardness. Alumina, or aluminium oxide (aluminum oxide), is better known in the mineral world as corundum with the chemical formula Al2O3 Alumina has widespread usage in several industries in refractories, sandblasting and abrasives to mention a few. Grinding, machining, blasting, cutting, and the manufacturing of shaped and unshaped refractory materials all employ fused aluminium oxide grits. We offer innovative, brilliant quality alumina mineral with both macro and micro sized that could be used for a wide range of applications. We can add refining procedures to our regular production of alumina mineral to suit the bespoke requirements of various industries and application domains. These various industries are ceramics, sand casting, tiles, enamels, laminates & paints, industrial coatings, abrasives, blasting, concrete & resin components, refractories, insulators and heat conductive to name a few.
What is Alumina? Alumina is a chemical compound that is formed of aluminum and oxygen with the formula Al2O3.It is called Aluminium Oxide. It has melting and boiling points of 2072 C and 2977 C, respectively. Aluminum Oxide has a density of 3.95 g/cm3. Why is Alumina powder used in ceramics? Although Alumina is an electrical insulator, it has a high heat transmission for a ceramic. Water does not melt Alumina. So, it is used in ceramics. What are the specifications of Alumina powder? Specifications of Aluminum Serial No Chemical Descriptions Percentage 1 Al2O3 99% 2 Fe2O3 0.05% 3 Mesh +200 How is alumina powder made for ceramics? Alumina are manufactured in ceramics from white particles or a smooth dense powder purified from bauxite. Alumina is a strong, long-wearing industrial ceramic which can only be produced via diamond cutting. What are the Uses in others? Alumina is a great element for bricks, plastics, polymers, and heavy clayware since it is chemically stable. It is also a popular component in sandpaper and a cost-effective alternative to industrial diamonds. What are the Side effects? Although Alumina is a beneficial metal, it is a skin irritant and it is also harmful for the environment. Itâ??s definitely uncomfortable in some cases
Alumina, synthetically produced aluminum oxide, Al2O3, a white or nearly colourless crystalline substance that is used as a starting material for the smelting of aluminum metal. It also serves as the raw material for a broad range of advanced ceramic products and as an active agent in chemical processing
White aluminum oxide is electrically fused in the furnace with high grade bayer processed alumina as raw material. It has high purity, ability of self-sharpening, better cutting, less heat emit, higher efficiency, acid and alkali resistance, good thermal stability. Abrasives tools made of it are suitable for grinding high-speed, high carbon steel , excite also can be used as materials for grinding and polishing, precision casting, spaying and coating, medium body for chemical industry, special ceramics and high-grade refractory materials, etc.
Brown fused alumina is fused and crystalized under high temperature from a mixture of bauxite and other raw materials. It is characterized by its high hardness, good toughness and sharp shape in size. Abrasives tools made of it are suitable for grinding metals of high-tensile strength such as: carbon steel, general purpose alloy steel, annealed malleable cast iron and hard bronze, etc. It also can be used as refractory materials.
Silica sand, also known as quartz sand, is a naturally occurring granular material primarily composed of silicon dioxide (SiO) in the form of quartz. It is renowned for its high purity, uniform grain size, and various physical and chemical properties,
Alumina ceramics is the most mature of the engineering ceramics, offering excellent electrical insulation properties together with high hardness and good wear resistance but relatively low strength and fracture toughness. High purity alumina ceramics are ideal for environments where resistance to wear and corrosive substances are required. Alumina ceramic has excellent thermal stability, which means that it is widely used in areas where resistance to high temperatures is essential. Alumina ceramic is the material of choice for alumina wear parts. The proven wear and heat resistance of alumina wear parts makes them ideal for the manufacture of wear-resistant components. Alumina has a high melting point, high hardness, although mechanical strength is reduced at temperatures above 1000 C. Due to the relatively large coefficient of thermal expansion, thermal shock resistance is reduced. Alumina is an electrically insulating material, with a high electrical resistivity, increasing with purity. Good chemical stability of alumina leads to high corrosion resistance. It is insoluble in water and only slightly soluble in strong acid and alkaline solutions. Testing has shown that the low chemical solubility of alumina ceramics components makes them highly resistant to chemical corrosion. This is what makes high purity alumina the material of choice for components in a wide range of industrial applications. Alumina Ceramics are generally white and the color is derived from either the sintering additives or impurities in the raw materials. We make and supply alumina ceramic grinding media, abrasion ceramic lining and alumina ceramic parts & components. We also supply zirconia ceramics.
Allied's alumina powders are made to the highest quality specifications and are used for the final polishing of metallographic specimens. Accurately controlled purity levels and particle size distribution assure optimum polishing results. Mix with DI water to produce a liquid slurry. 0.05 particle type/shape is Gamma; 0.3 and 1.0 are Alpha. E.D.S is here to serve you, Provide you information and services for your needs.
Ashapura is India's largest producer of Advanced Refractory Materials with a versatile portfolio of Castables, High Alumina Cement, Calcined Bauxite and Fused Aluminas. High-temperature Calcined Aluminous Clays (Chamotte & Mullite) are used to produce Alumina Refractories for steel, cement and metal industries. Besides having a dominant position in the Indian market, Ashapura is a preferred supplier of refractory raw materials & products in Europe, Middle East and South East Asia. Standing India's largest producer of refactory. Applications Abrasives Refactories Foundries Grinding Road Surfacing
We can supply alumina powder any quantity
Alumina Hydrate : (Aluminium Hydroxide) : Chemical Formula Al (OH)3 U.N.No.2463 Packing : 50 Kgs HDPE Laminated bags with thick inner liner. Physical Property : White Powder containing 4 to 5% moisture. Mesh size 200. Chemical Property : % of material as Al(OH)3 is 94-95%. Na2O contain 0.25 to 0.30%. Silica as SI02 - 0.012 to 0.015%. Fe2O3 0.010 to 0.015%. Uses : Glass, Ceramics, Iron-free aluminum and aluminum salts.
1. low attrition loss 2. high hardness 3. large surface area 4. high bulk density 5. large pore volume 1.1*1.1*1.3m 1 ton, 1 pallet
1. Description White tabular alumina is a kind of pure sintered corundum, which is sintered and completely shrink without adding any additive, such as mgo or b2o3, with coarse crystals and well-developed alpha al2o3 crystal structure. The tabular crystal structure is characterized by narrow pores, with more closed porosity, almost the same apparent porosity compare with fused corundum, high purity, good stability volume density, tiny refiring shrink. After high temperature treatment, tabular alumina is used for refractory and castable characterized by good thermal shock stability and flexural strength. But the price is higher than the other alumina. 2. Performance Tabular alumina is characterized by good heating volume temperature performance and good thermal shock resistance. 3. Usage Tabular alumina is the perfect refractory raw material, which is widely used as the aggregate for producing various alumina refractory, it also can be used in other monolithic refractory. It can replace fused alumina and white fused alumina in some application position, and improve the performance of refractory material. 4. Chemical & typical physical properties Chemical compositions Al2o3 99.20%min Sio2 0.20%max Fe2o3 0.20%max Na2o 0.40%max Bulk density g/cm3 3.50min Absorbing water rate 1.5%max Porosity rate 5.0%max Temperature 1960 degrees celsius Grain size mm 8-5mm, 5-3mm, 3-1mm, 1-0mm Fine powder mesh - 220mesh, -325mesh 1, high purity al2o3, 99.20% 2, pure sintered corundum 3, for refractory bricks and casting 4, supply all the size 8-5mm, 5-3mm, 3-1mm, 1-0mm, -325mesh
Calcined alumina can be used in the polishing of different alumina products(mainly used in middle, fine polishing).It is also widely used in high-class aluminium refractory material, unshaped refractory materials, high aluminium ceramic product and advanced coating, etc, . Item Al2o3 % Na2o % Sio2 % Fe2o3 % D50 A4m 99.8 0.1 0.05 0.02 3.1
