In this study, the effect of specific rates of breakage of nefelinli siyenit, which is a magmatic, feldspathic rock, on technological properties of ceramic bodies is examined. The ceramic material properties considered in this study derived from the application of non-destructive and destructive tests and include firing shrinkage, water absorption, mercury porosimeter and firing strength, while the specific rate of breakage (S_i) determined from batch grinding tests. In order to S_i values, in the range of -63+53 μm mono-size fraction was prepared. The nepheline syenite prepared in these interval were ground with 1/4, 5/16, 3/8, 1/2 and 3/4 inches alloy steel balls for different durations. The results indicate that the technological properties of ceramic materials examined show very good correlation and can be used to predict S_i. Overall, it is deduced that multiple regression analysis involving two independent variables is a reliable approach and can be used to identify correlations between technological properties of ceramic materials and specific rate of breakage values for nepheline syenite.

Keywords: Nepheline syenite, comminution, specific rate of breakage, ceramic materials, technological properties