US PATENT SUBCLASS 75 / 528
.~.~.~.~.~ Injecting gas or nonmetalliferous liquid which gasifies into, onto, or through premelted Iron(Fe) or slag layer thereon

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}
507  DF  .~.~.~.~ Melting Iron(Fe) or treating molten Iron {12}
528.~.~.~.~.~ Injecting gas or nonmetalliferous liquid which gasifies into, onto, or through premelted Iron(Fe) or slag layer thereon {5}
529  DF  .~.~.~.~.~.~> With hydrocarbon liquid or gas present {1}
531  DF  .~.~.~.~.~.~> And adding solid agent, slag, or flux to premelted Iron(Fe) or slag layer thereon {5}
548  DF  .~.~.~.~.~.~> Gas contains gaseous Oxygen {4}
558  DF  .~.~.~.~.~.~> Noble gas or inert gas not otherwise identified
559  DF  .~.~.~.~.~.~> Gas compound containing Oxygen (e.g., Carbon monoxide, Carbon dioxide, Water, etc.)

DEFINITION

Classification: 75/528

Injecting gas or nonmetalliferous liquid which gasifies into, onto, or through premelted Iron (Fe) or slag layer thereon:

(under subclass 507) Process wherein a gas or nonmetalliferous liquid that gasifies (e.g., oil, Water, etc.) under the operating conditions is injected into, onto, or through the premelted metal that contains over 50 percent by weight Iron (Fe) or slag layer thereon.

(1) Note. The injection of gas before or during the melting is not considered part of the subject matter under this subclass or the indented subclasses hereinbelow.

SEE OR SEARCH THIS CLASS, SUBCLASS:

571, for a process wherein gas is used to melt or is injected during the melting of a metal that contains over 50 percent by weight Iron (Fe).