Here is my guessExtrapolating form the Dumont report I posted earlier, I expect FPX to optimize nickel recoveries using:
1.) Rougher grind size of 150 micron (down from 600 micron)
2.) Regrind size of 50 micron, needed to liberate awaruite for flotation and also just about perfect for making a high-grade magnetite by-product.
Flowsheet order will be:
1.) Rougher grind to 150 micron;
2.) Rougher LIMS;
3.) Regrind LIMS magnetic fraction to 50 micron;
4.) Awaruite flotation;
5.) Possible awaruite scavenger steps;
6.) Cleaner LIMS for magnetite byproduct.
Whatever they come up with for a flowsheet should be immediately tested on the fine grained material from Orca / Wale. Id we can eek out a metallurgical winner at Orca / Wale we are all going to become very rich.