finally, thank you for sharing some cost figures. Had no idea who was right, one saying HCl 5-10x cheaper the other H2SO4 is cheaper. If HCl is nearly 10x more expensive that would be a good incentive not to use it, IXR had a pretty average DFS and most of the OPEX was in reagents, and then most of that in acid at pH 2 if you read in detail. Will watch from the sidelines on this one until ANSTO cone out with acid consumption rate at pH 0 for this ore which they say they are working on now.
Ann: Very High Metallurgical Recoveries, page-204
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