Method and a system for recycling waste materials including plas

Details Method and a system for recycling waste materials including plas Method and a system for recycling waste materials including plas

1992-08-10

1994-01-18

Rosenbaum, Mark

Solid material comminution or disintegration

Processes

Plural successive comminuting operations

2411522, 241DIG38, B02C 1912

Patent

active

052794652

ABSTRACT:
A method and system for recycling waste materials enables the treatment of masses of waste including thermosetting plastics materials, high-melting thermoplastics materials, aluminum, wood, paper, fabrics, etc. The mass of waste is first subjected to a grinding process, preferably in two stages, to reduce it to a maximum particle size of the order of 10 mm. The granular material thus produced undergoes a heating and mixing process and is then reduced to sheet or strip form and simultaneously cooled in order to undergo a scraping or shaving process which leads to the formation of a mass substantially comparable to a powder with a particle size of between 50 and 1000 microns, including a certain quantity of fibres. The shavings produced can be mixed with a better-quality plastics material, at least some of which may be produced from fairly large articles made of plastics materials which are first separated from the mass to be treated and ground separately, to produce a recycled plastics material in which the fraction of thermosetting materials, high-melting thermoplastics, aluminum, etc. constitute a filler and a fibrous reinforcing structure.

REFERENCES:
patent: 2464746 (1949-03-01), Gering
patent: 2959362 (1960-11-01), Smith et al.
patent: 3797761 (1974-03-01), Neil
patent: 4623515 (1986-11-01), Frei et al.
patent: 5080291 (1992-01-01), Bloom

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