High Alumina Aggregate Is Indispensable in Making Refractory

High Alumina Aggregates

High alumina aggregate is high grade bauxite aggregate in which the amount of alumina is 55 to 88. It is an indispensable material in making refractory castable. Mixed with high alumina cement, powder according to a certain of proportion, high alumina aggregates can be made into refractory concrete with high strength in our factory.

High Alumina Aggregate Is Indispensable in Making Refractory
High Alumina Aggregate Material

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Description of High Alumina Refractory Aggregates

As the raw material of refractory, high alumina aggregate is made through a series of manufacturing process. With the high amount of Al2O3, it possesses many sound performances such as high temperature and strong strength. High alumina aggregate is widely used in refractory material, refractory concrete and casting field.

High Alumina Aggregate Material Has High Refractory Temperature
High Alumina Aggregate Material of Rongsheng

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For instance, high alumina aggregate can be applied to the construction of heat equipment, the high temperature furnace wall, chimney and inner linings. Due to its features of low bulk density, low thermal coefficient and low water absorption, high alumina aggregate is usually used as the insulation material on furnaces and kilns.

Technical Parameters of High Alumina Aggregates Material

Item Al2O3≥ Fe2O3≤ TiO2≤ CaO+MgO≤ K2O+Na2O≤ Bulk Density g·cm3≥ Water Absorption%≤
GAL-85 85 1.8 4.0 0.4 0.4 3.10 4
GAL-80 80 2.0 4.0 0.5 0.5 2.90 5
GAL-70 70 2.0 4.0 0.5 0.5 2.80 5

Applications of Alumina Aggregates

  • Aluminum Refining Industry: It can be used for national defense, aviation, automobiles, electrical appliances, chemicals, daily necessities.
  • Precision Casting: The alumina clinker which is processed into fine powder and made into cast mould can be used in military, aerospace, communications, instrumentation, machinery and medical equipment field.
  • Refractory material products: The refractory temperature of high alumina clinker is 1780℃ with sound chemical stability and physical performance. For instance, mixed with magnesite, high alumina powder and binder, the high alumina aggregate can be made into refractory castable applied to ladle lining. In addition, it can be made into alumina cement, abrasives and various compound that ceramics industry and chemicals industry to make aluminum.

Manufacturing Process

The making of alumina aggregate takes several steps which is indispensable in the forming of it. Let me give a general description of this process.

First of all, the natural bauxite should be prepared for further manufacturing. And then the prepared material is to be sintered in the rotary kiln in order to make the raw material into bauxite clinker. Thirdly, the clinker will be broken and filtering after selected. Finally, high alumina aggregate with various granularity will be made.

Refractory Alumina Aggregate Supplier

High alumina aggregate boasts good performance such as high refractory temperature. Therefore, it is widely used in the making of refractory material. As a refractory manufacturer and supplier, Rongsheng Kiln Refractory Co, Ltd which plays the leading role in this field can provide high quality products.

With the development during the past two decades, Rongsheng has formed its own complete producing line with professional personnel and advanced technology. It has exported products to many countries such as UK, Australia, South Africa and so on. Much public praise has been gained for Rongsheng’s high quality products and adhering to honesty.

If you want to buy high alumina aggregates, please contact us. We will reply you within 12 hours.

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