Effect of Feldspar Content on Electric Arc Furnace Slag (EAFS) Added Tiles

Abstract:

Electric arc furnace slag (EAFS) is a solid waste from steel making industrial. Previously, EAFS was deposited, recycled or used as fertilizer. In present study, EAFS is used as one of the raw materials in ceramic tile production. EAFS added tiles samples have been prepared by mixing of EAFS with ball clay, quartz and feldspar. The feldspar content was varied at various weight percentages (0, 10 and 20 %) to observe their effect on the produced samples. The raw materials mixture was pressed and then sintered at temperature range 1100°C-1175°C for 1 hour. In general, results shows that, sample with higher content of feldspar require shorter vitrification range and having relatively higher density and good strength properties. In addition, MOR value was increasing as the sintering temperature was increasing. However when the temperature reached 1175°C, the MOR was dropped which may be due to the early vitrification of the compositions, resulting in over firing, grain growth and recrystallization. Whereas the density values are relatively higher than the conventional vitreous ceramic tiles due to the presence of high amount of iron oxide from the EAFS.

• Periodical: Advanced Materials Research (Volume 1024)
• Pages: 235-238
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1024.235
• Online since: August 2014
• Authors: Mohamad Hasmaliza*, Anasyida Abu Seman, Wei Long Gan
• Keywords: EAFS, Feldspar, Tiles

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