The Research on Formability of Refuse Derived Fuel (RDF-5)
|關鍵字:||垃圾衍生燃料;成形;木屑;稻草;廢紙箱;RDF;formability;saw dust;straw;waste carton|
RDF-5 is a fuel product recovered from combustible wastes. The producing processes of RDF-5 includes crushing, drying, separating and forming. This kind of product not only can solve the problem of municipal solid wastes but also have great advantage in recycling. This research focuses on the formability of RDF-5. After literatures survey, simplified material models such as continuum material and porous material were extruded numerically by FEM to obtain the basic relationships between extrusion pressure and extrusion parameters. On the bases of these relationships, extrusion experiments were conducted on wood saw dust and moisture contents of saw dust, extrusion ratios and half die angles were taken as controlled parameters to explore the formability of RDF-like saw dust. According to the results of experiments, the moisture content of saw dust was found to be the most significant effect on the formation of sound and solid extrusion product, while other extrusion parameters show inrelevant effect. Similar to results of metal extrusion, large extrusion ratio and higher half die angle require large forming pressure. Finally, straw, waste plastics and waste carton, which are typical ingredients in the RDF, were also extruded in the same experiment procedures to explore their formabilities. Similar results as those obtained from dust saw experiment were obtained.