Mullite-alumina refractory ceramics obtained from mixtures of natural common materials and recycled Al-rich anodizing sludge

authors	Tulyaganov, DU; Olhero, SMH; Ribeiro, MJ; Ferreira, JMF; Labrincha, JA
nationality	International
journal	JOURNAL OF MATERIALS SYNTHESIS AND PROCESSING
author keywords	mullite; alumina; Al-anodizing sludge; slip casting
keywords	BEHAVIOR
abstract	This work describes attempts to reuse Al-rich sludge produced from industrial anodizing and surface treatment processes in the fabrication of mullite-based refractory materials. The complete characterization of the residue is reported, including physical and compositional parameters. Mixtures with common natural silica-containing materials, like ball clay, kaolin, and/or diatomite were prepared in order to achieve interesting final fired compositions. Rheological characterization of the suspensions, their slip casting performance, the thermal behavior of the consolidated bodies, and crystalline phase evolution are also detailed. From the knowledge acquired, pretreatment operations have been suggested to facilitate the recycling of the Al-rich sludge and to improve the characteristics of mullite-based materials.
publisher	CONSULTANTS BUREAU
issn	1064-7562
year published	2002
volume	10
issue	6
beginning page	311
ending page	318
digital object identifier (doi)	10.1023/A:1023829601833
web of science category	Materials Science, Multidisciplinary
subject category	Materials Science
unique article identifier	WOS:000184428600003