US PATENT SUBCLASS 75 / 533
.~.~.~.~.~.~.~ With solid entrained in gas or injected by gas pressure

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  DF  .~.~.~.~.~ Injecting gas or nonmetalliferous liquid which gasifies into, onto, or through premelted Iron(Fe) or slag layer thereon {5}
531  DF  .~.~.~.~.~.~ And adding solid agent, slag, or flux to premelted Iron(Fe) or slag layer thereon {5}
533.~.~.~.~.~.~.~ With solid entrained in gas or injected by gas pressure {6}
534  DF  .~.~.~.~.~.~.~>.~ Boron(B) or compound thereof used in process
535  DF  .~.~.~.~.~.~.~>.~ Metal halide used in process
536  DF  .~.~.~.~.~.~.~>.~ Carbide used in process
537  DF  .~.~.~.~.~.~.~>.~ Elemental metal or elemental Silicon(Si) used in process
538  DF  .~.~.~.~.~.~.~>.~ Iron(Fe) containing compound used in process
539  DF  .~.~.~.~.~.~.~>.~ Alkali metal compound or Alkaline earth metal compound used in process

DEFINITION

Classification: 75/533

With solid entrained in gas or injected by gas pressure:

(under subclass 531) Process wherein a solid agent is entrained in or injected by gas pressure.

(1) Note. In this and the herein below indented subclasses, classification is based on the solid treating agent, slag, or flux added to the premelted metal or slag layer whether or not the solid is the entrained solid.