| 75 / | HD | SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES |
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| 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} |
| 513 |  | .~.~.~.~.~ In reverberatory furnace (e.g., open-hearth, Siemens-Martin, puddling, etc.) {9} |
| 514 | DF | .~.~.~.~.~.~> With treating of molten Iron(Fe) with gas outside reverberatory furnace (e.g., in Bessemer converter, etc.) |
| 515 | DF | .~.~.~.~.~.~> With melting Iron(Fe) in shaft furnace |
| 516 | DF | .~.~.~.~.~.~> Using gaseous Oxygen in a higher concentration than in ambient air |
| 517 | DF | .~.~.~.~.~.~> With addition of solid elemental Carbon(C) or employing elemental Carbon furnace lining |
| 518 | DF | .~.~.~.~.~.~> With compound containing Alkali metal and Oxygen (e.g., Sodium nitrate, Sodium carbonate, etc.) |
| 519 | DF | .~.~.~.~.~.~> With Halogen or Halogen containing compound (e.g., Sodium chloride, Fluorspar, etc.) |
| 520 | DF | .~.~.~.~.~.~> With Alkaline earth metal or Magnesium(Mg) containing compound |
| 521 | DF | .~.~.~.~.~.~> With Transition metal compound {1} |
| 523 | DF | .~.~.~.~.~.~> Melting solid Iron(Fe) |