US PATENT SUBCLASS 266 / 172
.~.~ Fluidized zone


Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

168  DF  MEANS FOR TREATING ORES OR FOR EXTRACTING METALS {3}
171  DF  .~ By means applying heat to work, e.g., furnace {10}
172.~.~ Fluidized zone


DEFINITION

Classification: 266/172

(under subclass 171) Device wherein means are provided for introducing a gas into the heating chamber so that the solid material within said chamber is maintained in a fluent condition while it undergoes treatment.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids,

576+, for an apparatus for conveying treated material by means of a fluid current.

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, appropriate subclasses for treating ores in gaseous suspension.

432, Heating, 58, for a fluidized bed in a furnace of general utility.