METHOD OF USE OF SECONDARY PLASTIC MATERIALS AND WASTES Russian patent published in 2000 - IPC

FIELD: use of secondary plastic materials. SUBSTANCE: method consists in depolymerization of secondary plastic materials or wastes at high temperature; if necessary, solvent or mixture of solvents and additional liquid phase are added; gaseous products and condensed depolymerization products (condensates), as well as viscous bottoms phase (depolymerizate) containing depolymerization products which is suitable for pumping is discharge by separate partial flows; condensate and depolymerizate are processed separately; at least one partial flow of depolymerizate is added to coal to be coked for enhancing sintering in the course of coking and is subjected to coking together with coal or to oxidation by means of thermal effect formed at this; it be also used as reducing agent in blast-furnace process or as additive to bitumen and bitumen-containing products. EFFECT: facilitated process. 6 cl, 6 dwg