MECHANICAL RECYCLING OF COMPOUNDED POLYMERIC WASTE AND EVALUATION OF BRIQUETTING PARAMETERS

In this contribution the study of recycling technology for refuse derived fuels (RDF) wastes and material valorization by briquetting technology is described. Various type of wastes (wood, carton, paper, plastic, textile) were processed by two-shaft and single-shaft shredders to obtain the output product 1-2 millimeters, which is suitable for briquetting process. For samples manufacturing the briquetting equipment developed in Slovak University of Technology in Bratislava was used. Technological test showed that briquetting of the municipal waste the higher pressing temperature and compacting pressure should be applied. For quality evaluation of the manufactured briquettes the density and strength properties were determined. The mechanical strength of briquettes from RDF increased after mixing it with wood and paper wastes. The influences of the different parameters (fraction size, moisture content, compacting pressure and temperature) to briquette quality were presented. To determine calorific value of briquetting stock (RDF and SLF) the tests in the chemical laboratory of the Department of Thermal Engineering of TUT were performed.