Abstract
Refractories have been very important for humankind development enabling the manufacturing of a wide range of materials. Primary industries demanding refractories include the manufacturing of steel, non-ferrous metals, glass, lime, cement, ceramics, petrochemicals and incineration. Refractory grade bauxites (RGBs) are high-alumina materials used as aggregates in shaped and unshaped refractory linings suitable to with stand high temperature heating and a corrosive environment. Despite the wide availability of bauxite ores in the world, few countries can supply a bauxite with refractory grades. Guyana, China and Brazil have emerged as suppliers for the refractory industry and the peculiarities of each bauxite from these countries impact directly on the refractory performance.
Highlights
As per the compliance and regulations of: Refractory grade Bauxite: An Overview about the Effects of Different Bauxite Sources and Forming
The impurities varied with the composition: 30%wt. “-6.70|+2.36 mm”; 30%wt. “ samples, where Brazilian Refractory grade bauxites (RGBs) showed a considerable
Mineralogy, chemical composition, firing temperature, particle size, forming process and porosity index will define the performance of the refractory
Summary
As per the compliance and regulations of: Refractory grade Bauxite: An Overview about the Effects of Different Bauxite Sources and Forming. Year 20 91 development enabling the manufacturing of a wide range of range and hostile environments, being a great raw materials. Refractory grade bauxites (RGBs) are high-alumina materials used as glass and metal industries [1]. Regarding to withstand high temperature heating and a corrosive chemical composition, there are several names found in environment. Despite the wide availability of bauxite ores in the the refractory market: siliceous; silica-alumina; high-. This work aims to study different sources of RGB and how the manufacturing process can impact the refractory properties. The Guyanese RGB presented the highest alumina content (~90% Al2O3). A Brazilian RGB with lower alumina content (~85% Al2O3) presented the highest hot modulus of rupture value (HMoR at 1200°C/5h = 5.12 MPa)
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