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The production of tiling and building ceramics is based mainly on the traditional system clay-silica-feldspar. However, in recent decades it has been demonstrated that some of these raw materials can be successfully replaced by various industrial wastes. Because of the high feldspars price a significant part of these studies was based on the usage of different alternative “amorphous” fluxes (as glass culets, TV cathode ray tubes, basaltic tuffs and others). Unfortunately, the addition of similar materials in amoun...

The largest manufactures of glass-ceramics in the last decades are related to the luxurious Japanese tiling material “Neoparies" and its replicas, developed in China. These marble-like materials are produced by sintering and surface crystallization of glass grains (frit) with original composition, placed in large refractory moulds (up to 1-2 m2) and the subsequent grinding and polishing of final panels in use. Since these products are manufactured in high volumes, the technology seems to be very appropriate for sy...

The materials used for the synthesis are modified waste raw materials in the form of slags (up to 70 % wt.) with addition of quartz sand and calcium fluoride. The initial batch is being melted at 1400 oC and then quenched in water. The resulting glass frit is milled bellow 75 microns, pressed into “green” samples being exposed in a next stage to thermal scanning at different temperatures with different heating rates, holding temperatures and times. In the framework of present investigation is presented analysis of...