Method for manufacturing oxygen-free copper
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United States of America Patent
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Aug 6, 1991
Grant Date -
N/A
app pub date -
Nov 21, 1989
filing date -
Nov 21, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method and apparatus for manufacturing an oxygen-free copper having an oxygen content of no greater than 3 ppm by weight are disclosed. In the method, a deoxidizing step is carried out by bringing a reducing gas containing hydrogen gas into contact with a molten copper to react to the oxygen to remove the same. Then a dehydrogenation step may be carried out by bringing a gas of lean hydrogen concentration into contact with the molten copper. Accordingly, the apparatus has a deoxidizing device for blowing the reducing gas into the molten copper and preferably a dehydrogenation device.
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