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Non-Chemical Melting Copper powder

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hrushi said:
How to melt copper powder which is recovered from iron or Aluminium
tried different ways and flux?
Hrushi
It's not hard to melt. Simply fill a crucible, fire, then add flux when it's molten, or when the material is hot enough to liquefy the flux. If you choose to use anhydrous borax, or borax glass, even that's not a problem. It can be added when the charge is cold, because it's much heavier and doesn't get blown out of the crucible as easily.

Sadly, I think you'll find the damage done to your furnace and crucible due to the use of flux, plus the cost of fuel for melting, will result in a net loss of value.

If you have access to a cupola, it can serve nicely to melt this stuff. Much cheaper to fire, and very adequate for the task at hand.

Harold
 
Cupola furnaces are great because the oxidization stays above the tapping point. They can also be run on cheap fuels.
 
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