Calcined Alumina Australia

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.

Calcined Bauxite: Calcined Bauxite is obtained by calcining (heating) superior grade Bauxite at high temperature (from 850 oC to 1600 oC). This removes moisture thereby increasing the alumina content. Compared to an alumina content of about 57 % to 58 % in raw Bauxite, Calcined Bauxite has an alumina content of 82 % to 86 %. The heating is carried out in rotary kilns. Calcination is done at different temperatures ranging from 850 oC to 1600 oC depending upon the customer’s application. We export Calcined Bauxite for various applications such as refractory bricks, abrasives, steel polishing, etc. We provide consistency in quality and availability of Calcined Bauxite at extremely competitive prices. Applications of Calcined Bauxite: Refractory Grade Calcined Bauxite (CB - I and CB - II Grade) : To make refractory grade, Bauxite is thermally treated at 1600 oC to produce Calcined Bauxite where the Alumina content is mostly above 82%. Brown Fused Alumina, Proppants and Road Surfacing : To make the above grades, Bauxite is thermally treated at 1000 oC - 1200 oC to produce Calcined Bauxite where the Alumina content is anywhere between 80-88% depending on the requirement. Minimum Order Quantity : 1 Containers

Features Of Calcined Bauxite Calcination is a process of heating, hence calcined bauxite is obtained by heating the high grade ore of the bauxite. Heating further removes the moisture content from the ore and thus results in the increase of the alumina content. Applications Abrasives Refractories Road surfacing

Kaolinite is the mineral that is derived from the rock called â??Kaolinâ?? and from there, it gets its name. It is also commonly known as â??China Clayâ??. Kaolin is mined from the regions of Gujarat, Rajasthan, Kerala, West Bengal and Jharkhand in India The physical properties of Kaolin include high brightness, non-abrasiveness, poor conductivity of heat and electricity and it has naturally fine particles. Kaolin remains white after calcination due to its refractory properties and can be easily dispersed in water. There are several variations within Kaolin such as Hydrous Kaolin, Metakaolin and Calcined Kaolin. We offer a vast range of Kaolin-based minerals to several businesses from paper manufacturing to porcelain tableware, paints, cosmetics, packaging, rubber and pharmaceuticals to name a few. We customize our minerals according to the needs of the industry of our clients. Hydrous Kaolin has fine particles with plate-like shapes and inertness in terms of chemical reactivity, whereas, Metakaolin is created by the process of calcination of Kaolin. It is a white mineral additive which is most popularly used in cement-based products. In contrast to this, Calcined Kaolin is manufactured by heating the finest natural kaolin to high temperatures in a kiln. This calcination process changes the size and shape of the particles, enhances the whiteness and hardness of the mineral and improves its electrical conductivity. Kaolinite is a clay mineral, with the chemical composition Alâ??Siâ??Oâ??(OH)â?? Various Industrial Usages: Kaolin is a very important mineral in the ceramics industry. Itâ??s high fusion temperature and white firing characteristic makes it perfect to be used in the manufacture of sanitaryware, tableware, floors & tiles and refractories. In the construction industry, kaolin is used to enhance the mechanical properties, porosity and look of several types of cement and concrete. It is also an impeccable source of alumina source in the manufacturing of fiberglass. Kaolin is used in paper manufacturing and fiber-based packaging also. Our Kaolin mineral enhances surface functionality when it is used as fillers or coating pigments and thus further helping in reducing the manufacturing cost of the paper or the packaging. Moreover, it is extensively used in decorative paints formulations as it is a natural opacifier and it is the perfect mineral when high gloss is required. Our specialized Kaolin also can be used as multi-purpose fillers to improve the performance of adhesives, plastics and rubber. We are extremely confident in our offering of Kaolin mineral as we understand how Kaolin can optimize the performance, reduce the costs and can achieve minimum carbon footprint in our clientâ??s end products

Calcined bauxite is produced by sintering/calcining with natural bauxite ore of low iron, low alkali at temperatures of 1600 - 1800 degree Celsius in the rotary kiln or round kiln through pre-heationg, calcination, cooling and other processes. During Calcining, it can be removed impurities and improving the content of alumina. Refractory grade bauxite has high refractoriness, good mechanical strength and moderate slag resistance. Therefore calcined bauxite is one of the most important raw materials for the production of shaped and unshaped refractories for the steel industry, foundries, glass and cement plants.

Calcined Clay or Refractory clay is obtained by Calcining (heating) superior-grade Clay at high temperatures (from 850o C to 1600o C). This removes moisture and volatiles which thereby increases the Alumina content. Compared to an Alumina content of about 30% to 40% in raw Clay, Calcined Clay has an Alumina content of 40% to 60%. The Calcination is carried out in Rotary Kilns at different temperatures ranging from 850o C to 1600o C depending upon the customer's application. Product Specification Grade Name PI- 43 PI- 43(M) PI- 50 PI- 50(M) PI- 60 AL203 % 43±1 43±1 50±1 50±1 60±1 FE203 % 1.3±0.2 1.3±0.1 1.4±0.2 1.4±0.1 1.7±0.2 AP % MAX 10 6 10 6 10 BD GM/CC 2.4±0.05 2.42±0.05 2.5±0.05 2.52±0.05 2.6±0.05 PCE o/c 31-32 32-33 33-34 33-34 34-36

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