US PATENT SUBCLASS 75 / 495
.~.~.~.~.~.~.~ Direct addition of gas containing gaseous Oxygen or water to shaft furnace (e.g., continuous HyL process, etc.)

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}
488  DF  .~.~.~.~ Reduction to metallic Iron(Fe) within shaft furnace {2}
489  DF  .~.~.~.~.~ Externally supplied gas reductant {1}
490  DF  .~.~.~.~.~.~ Solid Iron(Fe) produced within shaft furnace {4}
495.~.~.~.~.~.~.~ Direct addition of gas containing gaseous Oxygen or water to shaft furnace (e.g., continuous HyL process, etc.)

DEFINITION

Classification: 75/495

Direct addition of gas containing gaseous Oxygen or water to shaft furnace (e.g., continuous HyL process, etc.):

(under subclass 490) Process wherein a gas containing gaseous Oxygen or Water is added directly to the shaft furnace without being admixed with or reacted with another material before the addition.