Ceramic Properties of Alumina and Alumina-Mullite Pressed Bodies Based on Al-Rich Anodising Sludge

M.J. Ribeiro; Joao A. Labrincha

doi:10.4028/www.scientific.net/MSF.587-588.743

Paper Titles

Numerical and Experimental Analysis of Laser Surface Remelting of Al 9wt% Si Alloy Samples
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Numeric Study of PMMA Flow on a Small Dimension Channel: A First Approach
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Modelling of Voids Closure in the Diffusion Bonding Process
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Failure Analysis of Metallic Materials in Sheet Metal Forming Using Finite Element Method
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Ceramic Properties of Alumina and Alumina-Mullite Pressed Bodies Based on Al-Rich Anodising Sludge
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Leaching Behaviour of Industrial Oxidic By-Products: Possibilities to Use as Neutralisation Agent in Bioleaching
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Textural Development of Activated Carbon Prepared from Recycled PET with Different Chemical Activation Agents
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Acid Leaching of Leather Tanning Sludges: Metals Behaviour
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Leaching Studies of Spent Zinc-Manganese Alkaline Batteries with Sulphuric Acid
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HomeMaterials Science ForumMaterials Science Forum Vols. 587-588Ceramic Properties of Alumina and Alumina-Mullite...

Ceramic Properties of Alumina and Alumina-Mullite Pressed Bodies Based on Al-Rich Anodising Sludge

Abstract:

Alumina and alumina-mullite based refractory ceramic materials were produced from formulations based on an industrial Al-rich sludge derived from the wastewater treatment of the aluminium anodising process. Other ceramic raw materials like diatomite was also added, which can be consider as a by-product. Cylindrical samples processed by uniaxial dry pressing were sintered at different temperatures (between 1400-1650°C, 1 hour soaking) to study the ceramic properties evolution. The performance of fired materials was evaluated (firing shrinkage, water absorption, bending strength, thermal expansion coefficient, refractoriness and SEM microstructure) and demonstrated that optimal properties were obtained at 1650°C for alumina and 1450°C for alumina-mullite.