US PATENT SUBCLASS 75 / 453
.~.~.~.~.~ Cyclone apparatus used

Current as of: June, 1999
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75 /   HD   SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

330  DF  PROCESSES {9}
392  DF  .~ Producing or treating free metal {10}
414  DF  .~.~ At 300 degrees C or greater (e.g., pyrometallurgy, etc.) {7}
433  DF  .~.~.~ Iron(Fe) {18}
443  DF  .~.~.~.~ Reducing in gaseous suspension {4}
453.~.~.~.~.~ Cyclone apparatus used

DEFINITION

Classification: 75/453

Cyclone apparatus used:

(under subclass 443) Process wherein gas containing a suspension of Iron compound or reduced Iron compound is introduced into an apparatus tangentially so as to create a swirl. This apparatus may be used to effect reduction or to separate the Iron (Fe) produced from the gas.