Latest Inventions  Instruments Production equipment METHOD OF MELTING BITUMEN FROM WASTE BITUMEN ROLL MATERIALS
METHOD OF
MELTING BITUMEN FROM WASTE BITUMEN ROLL MATERIALS
 FIELD:
manufacture of building materials; utilization of waste bitumen-containing
materials.
SUBSTANCE: method consists in forming stack of
cut pieces in cassette in vertical position, placing this cassette in boiler for
thermal treatment, draining bitumen and removing the base; stack is formed at
clearance between cut pieces ensuring circulation of liquid bitumen in heat
treatment medium.
Then, preliminary heating of boiler is performed
and medium for heat treatment is formed; this medium is inert relative to
bitumen and base at temperature below melting point and not above boiling point
of bitumen in which cassette with cut pieces is placed. Vertical stack of cut
pieces is formed by means of rods or hooks; clearance between cut pieces is
ensured at ratio of 1:6 to 1:1 relative to thickness of these pieces.
Preliminary heating of boiler is effected by
heating it with the aid of hot air medium heated to temperature of 100 to 160 C
with the aid of thermal registers; heating medium is formed from liquid bitumen
poured into boiler after preliminary heating before placing the cassette; heat
treatment is effected at constant temperature of 160 to 210 C continued for 1 to
3 hours.
EFFECT: optimization of heat- and mass-exchange
process in processing waste roll materials. 4 cl, 7 dwg
Berestov V.A.,
Koloskov V.N., Korytov Ju.A., Smirnov A.N.
Patent number: 2195475
Publishing date: February 11, 2003
To make the order on reception of the complete information under the invention, interesting for you
Back
| 
