PROCESS FOR THE PRODUCTION OF A FIBROUS AND A GRANULAR MATERIAL, SYSTEM FOR THE PERFORMANCE OF SUCH PROCESS: AND USE OF THE FIBROUS AND THE GRANULAR MATERIAL

摘要

ABSTRACTIn order to avoid producing any secondary waste in the pro-duction of a fibrous and a granular material from house-hold, agricultural, forestry waste, organic waste of themanufacturing and/or service industries, the primary wastefirst undergoes an opening treatment in an opening unitand then, after removal of any metallic components by mag-netic separation units, is divided into three fractions.Such division is effected by a fractionating unit into (a)a fine fraction not exceeding the required final productparticle size, (b) a coarse fraction easy to process mecha-nically, and (c) a coarse fraction difficult to process me-chanically. The two coarse fractions are then separatelyreduced to the required final product particle size in re-ducing units optimally suited to the particular coarsefraction. Then all three fractions are dried to a specificmaximum residual moisture content and sterilized in a dry-ing unit by heating and extraction of the resultant steam,are re-united and jointly fractionated by a further frac-tionating unit and air separators into a heavy fractionconsisting chiefly of inorganic granulate, a light frac-tion consisting chiefly of organic fibres, and a dust frac-tion consisting chiefly of organic dust particles.