US PATENT SUBCLASS 75 / 471
.~.~.~.~.~ Defined composition of reductant

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}
458  DF  .~.~.~.~ Blast furnace reduction to produce molten Iron(Fe) {7}
471.~.~.~.~.~ Defined composition of reductant

DEFINITION

Classification: 75/471

Defined composition of reductant:

(under subclass 458) Process wherein the composition of the reductant of the Iron (Fe) compound is defined as other than nominal coke.

SEE OR SEARCH THIS CLASS, SUBCLASS:

460, for a process of adding carbonaceous material through the tuyeres with the oxygen containing blast, which material may be a reductant.