Energy solutions group 92 Resources Corp (CVE:NYT) has posted further encouraging metallurgical results from its Hidden Lake lithium project in Canada.
The dense media separation (DMS) mini-pilot plant has now been completed and produced around 40kg of high-grade spodumene concentrate averaging 6.11% of lithium oxide (Li2O).
Whole-rock channel samples, amounting to 400kg of material, were collected from the recently completed summer field program and were used to feed the plant.
The pilot performed in line with expectations, the firm added.
The testwork continues to support that a final overall concentrate grade of between 6% and 6.5% of lithium oxide at high recovery (80 to 85%) is achievable using low-cost and conventional processing techniques.
Although high-grade concentrates at high recovery may be achievable using only a flotation method, a combination of dense media separation (DMS) and flotation is often the preferred approach for spodumene recovery.
This is for various reasons, including that it's typically more cost-effective to operate, easier to control, and has a shorter operational start-up period.
92 Resources also noted that assays for tantalum from the various DMS product streams were pending.
The company currently holds three main assets in Canada - the Hidden Lake lithium property, in the Northwest Territories, the Corvette lithium property, in Quebec, and the Golden frac sand property, in British Columbia.
Shares in the company fell almost 7% % to C$0.20.