Heating – Tumbler-type rotary - drum furnace – Having combustion products generated in or fed to drum
Patent
1978-05-26
1980-06-10
Favors, Edward G.
Heating
Tumbler-type rotary - drum furnace
Having combustion products generated in or fed to drum
366 25, 432118, F27B 306
Patent
active
042070627
ABSTRACT:
Heating apparatus is disclosed that is particularly suited for use in combination with a drum mixer for treating asphalt aggregate materials to make such materials suitable for being applied to the ground surface. The heating apparatus generally comprises a plurality of flame-emitting gas burners and a combustion chamber for producing hot gases. A refractory lined plate assembly with an array of gas distributing ports is provided for spreading out hot gases discharged from the combustion chamber over the surface area of the plate assembly and also for inhibiting the open flames from passing from the combustion chamber. The combustion chamber is constructed to withstand the impacts and high temperatures encountered during operation of the mixer, as during transport, by attaching refractory bricks with metal backing plates to a rigid framework. The plate assembly is constructed in sections that are movable relative to one another to permit expansion and contraction with temperature variations. In the combination the heating apparatus and drum mixer are mounted end-to-end in coaxial alinement and on a vehicle for vehicular movement with the plate assembly between the combustion chamber and the interior of the drum and with the heating apparatus stationary relative to the rotational movement of the drum.
REFERENCES:
patent: 1982250 (1934-11-01), Hallenbeck
patent: 3916807 (1975-11-01), Eiki
patent: 4039171 (1977-08-01), Shearer
patent: 4143972 (1979-03-01), Benson
Moench Frank F.
Moench Lawrence R.
Favors Edward G.
Lewis, Jr. Ancel W.
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