The 14th International Mineral Processing Symposium, Aydın, Turkey, 15 - 17 October 2014, pp.793-800
In ceramic production, the cracked or broken tile, which are not accepted as commercial products, are around 5-8 % of total products. There are some attempts to utilize these waste materials by adding to the recipes. Currently, these wastes can only be used partly as raw materials in ceramic factories. Therefore, the huge amount of fired tiles accumulated near factories and subject to environmental problem. The aim of this work is to search the higher rate of the use in economic and technically feasible way.
This paper illustrates the optimum use of wall tile waste in the production of ceramic body. The characterizations of sintered wall tile wastes were carried out by using XRF and XRD. Then the optimum grinding condition was sought by using fully instrumented laboratory ball mill. The wall tile waste is ground to the finesses of 2,0 % residue of 63 micron sieve. The ground powder was added by 10,15,20,25 and 30 % to the recipes of ceramic body composition. XRD and dilatometer, color values, water absorption and shrinkage of sintered bodies were determined.
It has been concluded that the optimum use of wall
tile waste can be as high as 15 % without any problem provided that readjusting
the body composition especially the clay component. The use of larger amount of
sintered tile waste avoids the environmental problems and considerably reduced
to the production costs of raw materials. Additionally, the use of tile wastes
in ceramic production provides a more stable structure as the phase transitions
of tile waste was already completed.