4. Metallurgical apparatus
  5. Means for treating ores or for extracting metals
  6. By means applying heat to work, e.g., furnace

Uoo Chang Chung

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Apparatus for reducing fine iron ore

Metallurgical apparatus – Means for treating ores or for extracting metals – By means applying heat to work – e.g. – furnace
Patent

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Fluidized bed type reduction apparatus for iron ores and method

Specialized metallurgical processes – compositions for use therei – Processes – Producing or treating free metal
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