Method for the reduction of metallic compounds
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United States of America Patent
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Nov 2, 1999
Grant Date -
N/A
app pub date -
Aug 28, 1997
filing date -
Oct 31, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The preparation of suitable powdered metal is important in powder metallurgy technology. To date, powdered metals, in particular refractory metals, have been produced using very time-consuming and, consequently, costly methods for the reduction of metallic compounds, e.g. by reducing solid metallic compounds to powdered metal in fluidized bed ovens or pusher-type furnaces. In the present invention, powdered metallic compounds are reduced by retaining the solid phase as a continuous process by particles passing through a reaction chamber to predetermined orbits. The process lasts on average 0.4 to 60 s, and the level of completeness of the process is at least 90%.
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