Use Of Thermally Inertized Cement-Asbestos For The Production Of Rock/Glass Wool (In Italian)

In this study, the recycling of the product of thermal decomposition of cement-asbestos for the production of rock/glass wool is presented. The material, treated at 1200 deg C displays a full re-crystallisation of the asbestos fibres into innocuous Mg-, ca-rich silicates to be recycled. To formulate the blend for the glass/rock wool production, the thermally treated cement-asbestos was diluted with a low-cost feldspar from Sardina and a low-cost red clay from the Northern Apennines. The mineralogical, physical-chemical and technological properties of the synthesised glasses was tested and it was demonstrated that they are totally comparable with production standards.