Environmental pollution have become one of the most serious problems today in the world. The basic aim of this study is to contribute preventing environmental pollution. For this purpose industrial wastes were used to evaluate. In this study silica fume and pyrite ash were used as industrial wastes. The wastes were evaluated in producing briquettes as mineral admixtures. It is very significant that utilization of various industrial wastes such as silica fume and)pyrite ash causes to produce useful building materials is an important process because it not only converts the waste into useful materials but it also prevents the environmental pollution. In this study, it was investigated the effects of addition silica fume and pyrite ash on the compressive strength properties of briquettes)y using industrial wastes. Before preparing the briquettes hydrometer analysis, sieve analysis (particle size distribution oy thermal gravinnetric analysis (TG) analysis, IR analysis and tests of consistency limits were performed for clay. After the tests different mixtures were prepared in the ratio of 5%, 10%, 20% with,and without lime. The mixtures were moulded and sintered at 950 and 1000 C-circle in the sintering oven. After sintering of the briquettes, compressive strength tests were performed according to the Turkish Standard(TS 705). It is concluded that briquettes with compressive strength value of 353.72 kgf/cm(2) can be produced. This result was obtained from briquette which was prepared with silica fume in ratio of 20% and the same result was obtained briquette which was prepared with silica fume in ratio of 10% These are very high values because Turkish Standard (TS 705) requires 100-240 kgf/cm2. It is also recorded that compressive strength values at, 1000 degrees C are higher than 950 degrees C for every briquette which was prepared pyrite ash and silica fume. After compressive strength testing of sintered briquettes, XRD analysis of briquettes with 10% pyrite ash and 20% silica fume which have the most compressive strength value were performed.