Paper Title:
Use of Kaolin Processing Waste for the Production of Mullite Bodies
  Abstract

Mullite is a versatile material used in traditional and advanced ceramic, due to low thermal expansion, high thermal shock and creep resistance. The production of waste from ore industry is a problem that is increasing nowadays. The kaolin processing industry produces residue rich in Al2O3 and SiO2. These oxides are good precursors to produce mullite. The aim of this work is to use the residue from kaolin industry to produce mullite ceramic bodies. It was studied alumina, clay and residue from kaolin processing as raw materials. The material was dried and pressing in uniaxial press (30MPa). The samples were sintered at temperatures of 1450oC, 1500oC, 1550oC and 1600oC. The ceramic bodies were characterized by X-ray diffraction. The density was measured by Archimedes method and the flexural strength by the three point bending technique. The results showed that is possible to produce mullite with high amount of waste from kaolin processing.

  Info
Periodical
Materials Science Forum (Volumes 591-593)
Edited by
Lucio Salgado and Francisco Ambrozio Filho
Pages
799-804
DOI
10.4028/www.scientific.net/MSF.591-593.799
Citation
M. I. Brasileiro, R. R. Menezes, M.O. Farias, H. L. Lira, G. A. Neves, L. N. de Lima Santana, "Use of Kaolin Processing Waste for the Production of Mullite Bodies", Materials Science Forum, Vols. 591-593, pp. 799-804, 2008
Online since
August 2008
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