US PATENT SUBCLASS 75 / 560
.~.~.~.~.~ Treating premelted Iron(Fe) or slag layer thereon by adding solid agent, slag, or flux

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}
560.~.~.~.~.~ Treating premelted Iron(Fe) or slag layer thereon by adding solid agent, slag, or flux {9}
561  DF  .~.~.~.~.~.~> Loose elemental Carbon(C), coal, or coke (e.g., carburizing, etc.)
562  DF  .~.~.~.~.~.~> Sulfur(S) or compound thereof
563  DF  .~.~.~.~.~.~> Nitrate, Chlorate, Permanganate, or Peroxide
564  DF  .~.~.~.~.~.~> Boron(B) or compound thereof
565  DF  .~.~.~.~.~.~> Metal halide
566  DF  .~.~.~.~.~.~> Carbide
567  DF  .~.~.~.~.~.~> Elemental metal or elemental Silicon(Si) {1}
569  DF  .~.~.~.~.~.~> Iron(Fe) containing compound
570  DF  .~.~.~.~.~.~> Alkali metal compound or Alkaline earth metal compound

DEFINITION

Classification: 75/560

Treating premelted Iron (Fe) or slag layer thereon by adding solid agent, slag, or flux:

(under subclass 507) Process wherein premelted metal that contains over 50 percent by weight Iron (Fe) or slag layer thereon is contacted with a solid treating agent, a separately prepared slag, or flux.

(1) Note. Classification is based on the agent, slag, or flux added to the molten metal or slag layer thereon and not on the composition of the in situ generated slag or solid agents initially present before melting or added during melting.

(2) Note. The addition of molten metal to a solid agent, slag, or flux is acceptable to this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

571, for a process wherein a solid agent is utilized during the melting of a metal that contains over 50 percent by weight Iron (Fe).