Apparatus for the heat treatment of powdery material
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsTutomu Iwamoto, Kazuhiro Kubouchi
Life of this patent
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Abstract
A method and apparatus for the heat treatment of a powdery material wherein a flow-circling chamber circles round a powdery material-dispersing airflow and subsequently blows the airflow from a circling flow-blowing nozzle round in the proximity of the inside wall of the flow-circling chamber forming a hollow cone flow. A heated airflow conducting means concurrently applies a heated airflow to the periphery of the hollow cone flow and the material-dispersing airflow is conducted into a heat-treatment chamber wherein the heated airflow is conducted in the same direction as the circling direction of the hollow cone flow.
Claims27
An apparatus for the heat treatment of a powdery material comprising
- a flow-circling chamber for circling round a powdery material-dispersing airflow;
- a circling flow-blowing nozzle which blows said powdery material-dispersing airflow round in the proximity of the inside of the wall of said flow circling chamber forming a hollow cone flow of said powdery material;
- a heated airflow conducting means for conducting a heated airflow to the periphery of said hollow cone flow;
- and
- a heat-treatment chamber, wherein said heated airflow conducting means comprises a guide blade which guides said heated airflow downward and in the same circular direction as that of said hollow cone flow, and further comprising an air-flow direction control plate so that the heated air circling flow from said guide blade is narrowed and blown in the axial direction of said circling flow-blowing nozzle.
The apparatus of claim I further comprising a first cooling jacket around said circling flow-blowing nozzle, an air curtain forming means which blows a first cooling air through a gap between said first cooling jacket and said circling flow-blowing nozzle to form an air curtain, and said heated airflow conducting means has a heated airflow blow-off outlet having therearound a second cooling jacket.
Dependencies are inferred from the claim text.