Colored glazes with additions of spent catalysts

At the present time the sattitaryware industry is undergoing all-around conversion to the production of articles from porcelain bodies decorated with colored glazes employing local raw materials and industrial waste. The expansion of the range of colored glazes is possible by two methods: by using pure oxides and compounds Of chemical elements, or by using waste from industry, which is an important national economic resource since together with improvements in quality there is an improvement in the environment.