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How to Make a Gold Bar by Casting Gold Bullion Ingot - 911Metallurgist

How to Make a Gold Bar by Casting Gold Bullion Ingot - 911Metallurgist

The operation of refining by one of the methods described above is necessary before gold can be exactly valued. When base metals other than copper are present, segregation occurs and the solidified metal is not uniform in composition. The result is that the exact value of the bullion cannot be determined, and the buyer must ... Read more

911metallurgist.com2016年11月19日

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