I asked Bill Trenaman (Ivanhoe IR) if Ivanhoe was looking into this new technology for Platreef -

https://www.miningweekly.com/article/new-cost-slashing-platinum-technology-gaining-impressive-momentum-2017-05-18

Bill forwarded my question to Ivanhoe's technical/process engineers in South Africa. Their response -

We sent a sample to Australia to have amenability test work carried out on Kell. Results proved as expected that it was amenable to Kell on lab scale. The next step is to send a further 10Kgs for further testing. We have put this on the back burner while we complete the FS on Phase 1, but intend to follow up after FS completion as we look to the long term.