Higher pH leads to higher impurities lead to higher losses of REE in removal of impurities.
IXR is low grade and heap leach will be used. Heap leach recoveries tend to be lower than tank leach.
The leaching data you used are for a pH of 1 from the scoping study.
The final recovery data are from the DFS which assumes leaching at a pH of 2 - see below.
MEI leaching tests have been conducted at a pH of 4 which should lead to lower dissolution of impurities and lower losses of payables in their removal.
from the IXR DFS...
Higher pH leads to higher impurities lead to higher losses of...
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