| Summary: | The aim of this work was to try various disaggregation processes in order to separate vermiculite from quartz, as this reduces its quality in different industrials applications. In order to quantify the quality of the vermiculite and to evaluate the efficiency of the disaggregation operations, thermal expansion tests and mineralogical counting were carried out. Wet and dry separation processes, using as variable the time, there were performed and the products were classified according to their grain size. The thermal expansion tests were made in muffle, a number of variables being analysed such as: grain size and expansion time, at 800°C. These were quantified by an expansion coefficient. The conclusion drawn from analysis of the results is that the best performance is obtained by using dry separation, 30-mesh, an expansion time of 80 seconds and a temperature of 800o C.
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