Summary
Allup is also preparing a drilling program for the project in Q4 CY24 to enable an update of the existing Mineral Resource Estimate (MRE) in early 2025, and to investigate potential to increase the known resource.
Previous IHC Metallurgical Testwork Results
In 2018, IHC completed a metallurgical testwork program on a representative sample derived from a 14-tonne bulk sample from the McLaren deposit. The sample assayed approximately 7.2% heavy mineral. Mineralogical analyses of the heavy mineral indicate it to contain 56.3% ilmenites and higher grade titanium minerals such as Leucoxene.
The IHC metallurgical test work program confirmed the material to be amenable to standard mineral sands processing methodologies, utilising typical mineral sands equipment.
Ilmenite recovery from WCP feed into the CUP Magnetic stream was ~75% of ilmenite, Altered Ilmenite and HiTi minerals. Overall recovery of rutile/anatase from the WCP feed into the non-magnetic concentrate was ~57% Overall recovery of zircon from the WCP feed into the CUP non-magnetic concentrate was ~70%.
Slimes settling was achieved using addition of 3% gypsum, resulting in significant improvement in flocculant dosing rates, down to 150-200g/t.
The test work produced final products of:
Flowsheet Development
The IHC 2018 test work resulted in the development of a conceptual flowsheet using traditional mineral sands separation techniques. It consisted of three circuits, comprising:
The HMC produced in the WCP was processed through the CUP to produce a magnetic concentrate suitable for an ilmenite process circuit and a non-magnetic concentrate containing 90-95% Heavy Mineral.
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