Road structure – process – or apparatus – Process – Heating
Patent
1984-10-05
1986-10-28
Novosad, Stephen J.
Road structure, process, or apparatus
Process
Heating
404 77, 404 81, 404 91, 404 92, 404108, 366 25, E01C 2314, E01C 1918
Patent
active
046195505
ABSTRACT:
Fragmented old asphaltic concrete or the like is recycled into new hot-mix by temporarily separating larger pieces from the smaller fragments, generating heat internally within the large pieces with penetrating microwave energy, separately heating the smaller fragments by exposure to hot gas, and then recombining and remixing the separately heated components. The old concrete can be heated very rapidly, highly uniformly and economically while avoiding asphalt degradation and pollution problems that can be caused by exposure to extreme high temperature and while avoiding the relatively high costs of heating the entire volume with microwave energy. Sorting, heating and mixing apparatus (11, 11a) embodying the invention may be made transportable to a site at or near a repaving operation or may be travelable along a roadbed to pick up old concrete and deposit new hot-mix or may be integrated into a fixed hot-mix plant (73, 73a, 73b) to enable, among other modes of operation, production of hot-mix wholly from old reclaimed concrete or production of hot-mix from both old and new materials in any desired proportions.
REFERENCES:
patent: 2626875 (1953-01-01), McConnaughay
patent: 2783698 (1957-03-01), Bambi
patent: 3263052 (1966-07-01), Jeppson
patent: 3478900 (1969-11-01), Jeppson
patent: 4000000 (1976-12-01), Mendenhall
patent: 4062127 (1977-12-01), Pfeiffer
patent: 4175885 (1979-11-01), Jeppson
patent: 4189238 (1980-02-01), Mendenhall
patent: 4252459 (1981-02-01), Jeppson
patent: 4252487 (1981-02-01), Jeppson
patent: 4276093 (1981-06-01), Pickermann
patent: 4319856 (1982-03-01), Jeppson
patent: 4332478 (1982-06-01), Binz
patent: 4347016 (1982-08-01), Sindelar et al.
Paper, author not known, "Recycling Systems--How They Stack Up", 2-2-78, 6 unnumbered pages, distributed by CMI Corporation.
Lazar et al, "A New Concept in Blanching", Food Technology, vol. 25, pp. 684-686, Jul., 1971.
Jeppson, "A Total Energy Concept for Mine-site Production of Electric Power and Shale Oil", undated 17 page paper prepared by Applicant in 1976, (see accompanying Information Disclosure Statement).
CD High Technology, Inc.
Letchford John F.
Novosad Stephen J.
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