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High copper refining Flux recipe (1 reply)

S

sarchery

7 years ago

sarchery 7 years ago

Is there a specific flux recipe or extra additive that has been tested to improve the fineness of the gold bars that contain high copper content during smelting.

The current flux constituents are borax, silica and potassium nitrate

David

7 years ago

David 7 years ago

Like

Try adding 5% feldspar.

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