Refining of Gold at the Rand Refinery - SAIMM
Figure 10.3. Weighing mine bullion on arrival at Rand Refinery. osmium and iridium (osmiridium), which are not removed by chlorination and such deposits must be further refined by electrolysis. The product of the electrolytic gold section (fineness 9999) is delivered to the Coin Bank Com plex for the manufacture of Krugerrand blanks.
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