US PATENT SUBCLASS 75 / 503
.~.~.~.~ Reduction in presence of solid Carbon(C) containing material (e.g., coke, coal, carbides, 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}
503.~.~.~.~ Reduction in presence of solid Carbon(C) containing material (e.g., coke, coal, carbides, etc.) {1}
504  DF  .~.~.~.~.~> Including consolidation of solid Carbon(C) containing material with reducible Iron(Fe) compound

DEFINITION

Classification: 75/503

Reduction in presence of solid Carbon (C) containing material (e.g., coke, coal, carbides, etc.):

(under subclass 433) Process wherein an Iron (Fe) compound is reduced to metallic Iron in the presence of a solid containing Carbon. The Carbon may be either in elemental (e.g., coke, coal, etc.) or combined (e.g., carbide, etc.) form.