Firstly, SRF or RDF can be defined by many properties which are mainly; calorific value, grain size (30mm-150mm), moisture content. CL, Fl and Metal levels are also important parameters.
Industrial and bulky waste contain a lot of recyclable materials with a high calorific value like for example cardboard, paper, wood, plastics, minerals etc. All these potential recyclables are taken from the material stream by automatically sorting systems and supplied as refuse derived fuels to coal-burning power plans and/or to the cement industry.
Also on RDF plants, the STADLER ballistic separator has an important function by sorting out the most important material stream for this process, the high calorific flat and light fraction.
All plastics not qualified for the production of SRF/ RDF due to their proportion of contaminant are extracted by near-infrared sensors afterwards. The extraction of environment stressing PVC-parts is very important.
The regularised reduction of the waste quantities (landfill regulations) demands the conception of innovative and modern sorting plants and technologies for the effective treatment of waste. Residues which still have to be disposed are to be limited to a minimum.
The alternative energy production becomes more and more important due to the shortage of fossil fuels.
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