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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.19 [2012] >
IJCT Vol.19(6) [November 2012] >
| Title: | A novel binder-free and energy-efficient process for making ceramic tiles using red mud and sericitic pyrophyllite |
| Authors: | Khan, Jeeshan
Amritphale, S S
Chandra, Navin
Patel, M |
| Keywords: | Ceramic tiles
Energy efficient process
Red mud
Sericitic pyrophyllite |
| Issue Date: | Nov-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A new process for utilizing the waste from alumina
refinery plant such as red mud in production of ceramic tiles has been
developed. Pyrophyllite mineral has been added to the red mud to improve the
strength properties. The tiles are produced at comparatively lower temperature (950-1000°C) then the conventional process of making ceramic tiles and without
addition of phosphatic binders. Impact strength of the optimized composition of
40-60% (w/w) sericitic pyrophyllite in red mud system meets the acceptable
limit of impact strength (19.6 J/m) and other properties for ceramic. The
achieved impact strength has been attributed to the densification in the matrix
of ceramic tiles due to the formation of new phases like calcium aluminum
silicate, iron silicate, potassium titanium oxide and magnetite by thermal
reaction and transformation of various mineral phases present in the sericitic
pyrophyllite and red mud. The structural features of the red mud have been
studied using scanning electron micrographs, exhibiting rhombohedral shaped crystals
of calcium aluminum silicate and elongated crystal formation of metals
silicates, which provides reinforcement to the ceramic tiles matrix.
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| Page(s): | 420-426 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.19(6) [November 2012]
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