Process for recycling waste consisting of polymeric, composite and industrial rubber materials

Method of recycling wastes of polymeric, polymer compound and industrial-rubber materials, under which

• a bath of liquid-metal heat-transfer agent is formed by melting, which consists of one or more metals from the group of lead, bismuth, zinc, aluminium, and copper, and the heat-transfer agent is overheated by 50-150° C. above the melting temperature,
• a separating layer is created on the surface of the heat-transfer agent melt by melting a complex of salts of alkali and alkaline earth metals on the melt surface,
• a refining layer is created above the separating layer by melting active additives consisting of alkali and/or alkaline earth metals,
• and the following conditions are observed:
• The melting temperature of the molten liquid-metal heat-transfer agent is higher than the melting temperature of molten salts of the separating layer, which, in turn, is higher than the melting temperature of the refining layer melt, and the density of the molten liquid-metal heat-transfer agent is higher than the density of the molten salts of the separating layer, which, in turn, is higher than the density of the refining layer melt,
• a weighed sample composed of waste that was previously placed in a container with perforated walls with at least one horizontal partition is fed and pushed through the liquid-metal heat-transfer agent bath
• at the end of pyrolysis, the containers are taken out of the melt,
• concentration of active additives is kept constant by introducing portions of the active additive together with other portions of pyrolyzed waste.