US PATENT SUBCLASS 75 / 545
.~.~.~.~.~.~.~.~ Alkali metal compound or Alkaline earth metal compound

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}
540  DF  .~.~.~.~.~.~.~ Gas contains gaseous Oxygen {5}
545.~.~.~.~.~.~.~.~ Alkali metal compound or Alkaline earth metal compound

DEFINITION

Classification: 75/545

Alkali metal compound or Alkaline earth metal compound:

(under subclass 540) Process wherein an Alkali metal compound (e.g., Sodium hydroxide, Sodium carbonate, etc.) or an Alkaline earth metal compound (e.g., Calcium oxide, Calcium Carbonate, etc.) is present in the solid agent, separately prepared slag, or flux.