From the quarterly:"Plant trials have shown flotation...

From the quarterly:

"Plant trials have shown flotation conditioning and temperature control to be the major causes of poor
performance in flotation. Installation of a temporary static mixer has led to improved mixing and conditioning
and the new heat exchanger installed in December has assisted in stabilising temperature control leading to
significant improvements in crystallisation and chemistry of the flotation feed. Together, these initiatives have
led to a step change in flotation recoveries from 20% in October 2022 to around 50% in January 2023 (albeit
at feed rates below design) versus design flotation recovery rates of 80-90%. As flotation recovery increases
and the plant throughput and performance moves closer to design, temperature control issues are expected
to be resolved."

From the research by SRC:

"12.7 SRC – Phase 2
Following successful completion of the Phase 1 works, SRC was engaged to perform further test
work with the aim of enhancing product recovery. SRC performed the following test work: SOP
conversion & Schoenite Conversion – temperature liquid/solid ratio and time optimization; Flotation
– collector optimization, dosage, direct vs reverse flotation, temperature confirmation; and locked
cycle tests.
Results of the test work included: high grade SOP (>52% K2O being produced); reduced SOP
conversion temperature; ideal schoenite conversion ratio; locked cycle test work verifying the
optimized tests and mass balance; and an overall K recovery of 93.6% without considering plant
handling losses."

Seems odd that only now temperature is being shown to be part of the problem when this was covered during the test work by SRC.