Cyanide Processes
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THE RECOVERY BY THE CYANIDE PROCESS.
IF by amalgamation of a $40 ore, 70 per cent has been recovered, it is considered excellent work; if now by the cyanide process and use of $12 tailings 90 per cent more is recovered, we can consider it par excel- lent work, since we have recovered all but $1. 20 in the ore.
The Rand Extraction Company of South Africa treats tailings averaging 5 dwt. Of gold to the ton equal by our figures to $5 P er ton. They recover 80 percent of this, or $4 per ton. The wr...iter has known from personal observation of the recovery of 98 per cent from pure quartz carrying gold, and of another instance of 97^ per cent from clayey ore, while on the other hand, for very good reasons, but 20 per cent of the fire-assay value was recovered. From this we deduce that the character of the ore has much to do with the percentage recovered, and moreover that the cyanide process is not applicable to every ore contain- ing gold and silver.
If gold can be extracted economically without too great loss of quicksilver, amalgamation should precede 48 CYANIDE PROCESSES.
What to read after Cyanide Processes?
You can find similar books in the "Read Also" column, or choose other free books by E B Eugene Benjamin Wilson to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
THE RECOVERY BY THE CYANIDE PROCESS.
IF by amalgamation of a $40 ore, 70 per cent has been recovered, it is considered excellent work; if now by the cyanide process and use of $12 tailings 90 per cent more is recovered, we can consider it par excel- lent work, since we have recovered all but $1. 20 in the ore.
The Rand Extraction Company of South Africa treats tailings averaging 5 dwt. Of gold to the ton equal by our figures to $5 P er ton. They recover 80 percent of this, or $4 per ton. The wr...iter has known from personal observation of the recovery of 98 per cent from pure quartz carrying gold, and of another instance of 97^ per cent from clayey ore, while on the other hand, for very good reasons, but 20 per cent of the fire-assay value was recovered. From this we deduce that the character of the ore has much to do with the percentage recovered, and moreover that the cyanide process is not applicable to every ore contain- ing gold and silver.
If gold can be extracted economically without too great loss of quicksilver, amalgamation should precede 48 CYANIDE PROCESSES.
What to read after Cyanide Processes?
You can find similar books in the "Read Also" column, or choose other free books by E B Eugene Benjamin Wilson to read onlineMoreLess
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