Sunil Jayasekera1, Simon Donegan1, Tim Harrison1, Ronald Molnar2 and Michael Robart3
1Clean TeQ Holdings Limited, Australia
2MetNetH2O, Canada, Consultant to Clean TeQ
3SGS Canada Inc., Canada
Clean TeQ is developing its Sunrise Project located in New South Wales, Australia utilising its Clean-IX® technology. The DFS currently underway, assesses the economics of producing high purity nickel and cobalt sulphates for lithium-ion battery market. The study also includes the production of scandium oxide.
Clean TeQ has developed a novel hydrometallurgical process flowsheet for direct treatment of its laterite ore to produce battery-grade nickel and cobalt sulphate crystals. The process encompasses pressure acid leaching of the ore followed by resin-in-pulp and the processing of the eluate through solvent extraction to generate nickel and cobalt tenors suitable for crystallisation. This paper discusses the results of a pilot plant campaign conducted at SGS Lakefield, which generated on-spec nickel and cobalt sulphates from Sunrise ore.