recovery of gold from ores with chlorine in 1898

[fishaholic5]

Another note:
PGM rich ores will form HexaChloro PGM salts in a concentrated pressurised leach system.
Its better to leach these ores with a more dilute open leach at a near nuetral pH to help avoid this.

Cheers Wal

 

[fishaholic5]

The use of a leach solution charged with a mixture of Calcium Chloride and Sulfuric acid to create Chlorine, added water and then pressurised to around 60psi (4 atmospheres) may have created a leach solution that contains Nitrates, Chlorine and Sulfate that could extract all of the PGM's as well as Gold.


Cheers Wal