Granite waste and coffee husk ash synergistic effect on clay-based ceramics

Brazil produces massive amounts of granite sawing waste and coffee husk ash and their inadequate and, often, illegal disposal causes enormous environmental problems. In the past decade, these and other industrial wastes have been intensively studied aiming at determining their potential as alternati...

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Bibliographic Details
Published in:Advances in applied ceramics 2016, Vol.115 (4), p.236-242
Main Authors: Acchar, W., Avelino, K. A., Segadães, A. M.
Format: Article
Language:English
Subjects:
Ceramic fluxes
Clay-based ceramics
Coffee husk ash
Granite
Waste recycling
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Summary:Brazil produces massive amounts of granite sawing waste and coffee husk ash and their inadequate and, often, illegal disposal causes enormous environmental problems. In the past decade, these and other industrial wastes have been intensively studied aiming at determining their potential as alternative raw materials, particularly for the ceramic industry. This work describes research carried out on the joint incorporation of those wastes in ceramic roof tile formulations. The results indicated that the simultaneous use of both materials translates into a very forgivable industrial working range, both composition- and temperature-wise, which, given the technological properties values observed after firing at 1100°C, enables industrial up-grade to wall tile production. As collateral benefits, the use of granite waste and coffee husk ash as alternative raw materials in the manufacture of clay-based products will relieve the stress on feldspars consumption and attenuate waste disposal concerns.
ISSN:1743-6753
1743-6761
DOI:10.1080/17436753.2015.1126989