DRY GRINDING OF WALL TILE WASTES AND THEIR POSSIBLE USE IN THE WALL TILE BODY

In the wall tile production, fired waste tiles of 5-8% occur due to the inappropriate body compositions or operational failures. The use of these sintered hard wastes is limited since it creates problems in the raw material wet grinding stage. The aim of this study is to determine dry grinding properties of these wastes and their possible use in the wall tile body production. Dry grinding experiments were carried out in a laboratory type ball mill and the effect of feed size, ball/material ratio, mill rotational speed and material moisture content on the grinding efficiency was studied. The use of the ground waste in body composition was also investigated. As a result of grinding experiments, the optimum grinding conditions determined as feed size of -2 mm, ball/material ratio of 4, mill rotational speed of 53-46 rpm and material moisture of 0.6%. Ground products (wastes) obtained at optimum grinding conditions were tested in different body compositions and these results revealed that these wastes could successfully be used in the body composition