FIELD: processing materials, such as roofing bitumen-containing materials.
SUBSTANCE: waste are ground and loaded in bitumen melting boiler for separation of them from cardboard base in presence of liquid contact heat-transfer agent. During heating, flue gas is evacuated from furnace of boiler through box used for reduction of flue gas pressure via pipe line to gas separator for entrapping and settling of soot. Then gas directed to filtering unit where it is cleaned and is discharged into atmosphere in form of clean air. Molten bitumen and cardboard pulp are extracted from melting boiler and are cooled to temperature not above 140oC, after which cardboard pup is washed in bitumen-dissolving reagent and is used for manufacture of roofing materials and/or materials for furnaces; liquid phase remaining after washing is used as base for production of bitumen varnish; soot is used for manufacture of rubber articles or dye or pigment for paints and varnishes. Plant proposed for realization of this method is provided with gas separator, gas filtration unit and bitumen melting boiler.
EFFECT: optimization of process; enhanced ecological safety; increased productivity; reduced usage of materials.
22 cl, 8 dwg
