A kind of gold-silver alloy separation and purification process
A gold-silver alloy and alloy technology, applied in the field of metallurgy, can solve the problems of low nitric acid leaching silver leaching rate, difficult gold leaching reaction, etc., and achieve the effect of preventing oxidation
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[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation, but it does not limit the present invention.
[0021] figure 1 It is a process for separating and purifying gold and silver alloys, the main content of which is to separate and purify gold and silver alloys containing 8%-35% silver and 92%-65% gold; including the following steps:
[0022] 1) Remelted alloy
[0023] Put the above-mentioned gold-silver alloy in a graphite crucible, add metal zinc, or metal aluminum, or metal tin, or a mixture of several of them; add the amount to reduce the gold content in the alloy to below 30%; heat up to melt the alloy; At the same time, in order to prevent metal oxidation at high temperature, the entire melting process needs to be protected by an inert gas, such as nitrogen or argon;
[0024] 2) Water quenching
[0025] Slowly pour the remelted alloy into cold water to quench the molten alloy into fine al...
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