The article presents the results of experimental work in the first waste mechanical Pre-treatment Centre in Latvia Daibe. The goal – to detect the main parameters for sorted waste parts and to compare them with parameters stated for refuse derived fuel (RDF) in a cement plant in Latvia (Cemex). Samples were taken in four fractions - coarse, medium, fine, metal. The parameters – upper, lower heating values, moisture, ash content, S, Cl, metals were determined. Results - coarse fraction has greater potential of the production of the RDF, but reduction of its content of Cl would be necessary.