Drying/coating drum for the preparation of bituminous coated pro

Details Drying/coating drum for the preparation of bituminous coated pro Drying/coating drum for the preparation of bituminous coated pro

1990-04-03

1991-01-29

Jenkins, Robert W.

Agitating

Mortar mixer type

With heating or drying

366 58, B28C 546

Patent

active

049882074

ABSTRACT:
The drying/coating drum comprising a burner (20) whose body (19) penetrates via the discharge end (3) of the drum into a zone which is distant from this end. The gases and the solid materials circulate countercurrent-wise in the drum. The body (19) of the burner (20), fixed relative to the drum (1), is disposed inside an outer peripheral sleeve (22) which is free in rotation about the body (19) of the burner (20). The outer sleeve (22) is connected to the casing (1) of the drum. The end of the outer sleeve (22) corresponding to the end (19a) of the burner from which the flame (14) develops carries a plurality of radially directed blades (25, 26) forming a turbine for sucking gas into the mixing zone (30) and a screen against radiation from the flame (14) of the burner (20) during rotation of the drum.

REFERENCES:
patent: 2421345 (1947-05-01), McConaaughay
patent: 3329131 (1967-07-01), Wright
patent: 4095285 (1978-04-01), Malbrundt
patent: 4787938 (1988-11-01), Hawkins

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