Title: Apparatus for the treatment of powdery or granular material

Abstract: An apparatus for the treatment of powdery and granular substances, which provides for cooling or heating and/or spraying the substances with liquid or molten addition or treatment elements in a vessel rotationally symmetrical to its vertical axis. The substances to be treated are introduced into a vortex flow at the head of the vessel and then carried along by a substantially axially parallel, downward-moving gas stream and are conducted through a spraying zone in which the liquid or molten elements are sprayed thereon. This flow, after a movement undisturbed over a certain interval, strikes upon a counterflow rising from underneath, the velocity adjustment of which is determined by the sifting effect and/or the staying time. The gases, preferably air, enter the vessel in a tempered state in correspondence to the desired result of the process.

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Inventors: Grun, Gustav (6474 Ortenberg 2, DE, US)

Application Number: 761491
Filing Date: 1977-01-21
Publication_date: 1979-02-27
Assignee:
Primary Class(es): 118/303 118/24, 118/DIG5, 426/453, 427/212
Other Classes:
US Patent Ref:

2561394	Jul, 1952	Marshall	427/213.
2799241	Jul, 1957	Wurster	118/24.
3040439	Jun, 1962	Frost	118/DIG.
3110626	Nov, 1963	Larson et al.	118/24.
3196827	Jul, 1965	Wurster et al.	118/24.
3385724	May, 1968	Grun	118/303.
3469562	Sep, 1969	Grun	118/24.

Other Refs: 696248157765643-4482

Oct, 1964	CA
Aug, 1969	FR
Feb, 1968	JP

Primary Examiner: Mackey, Robert
Assistant Examiner:
Attorney: Friedman, Goodman & Teitelbaum