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First Cobalt president and CEO Trent Mell said this would provide the junior with greater leverage to the cobalt market and potentially a greater share of the project economics outlined in its May 4 engineering study.
"With the decision to be a market purchaser of feedstock, rather than a toll refiner, the company has resumed discussions with lenders and intends to move aggressively to advance its strategy," he said.
"I am very appreciative of Glencore's ongoing support and look forward to working towards completing a mutually agreeable cobalt hydroxide supply agreement for our refinery."
First Cobalt said the maturity date on its US$5 million loan with Glencore had been extended by one year to August 2022, which was better aligned with refinery commissioning.
Bench-scale testing of cobalt hydroxide feedstock from Glencore's Katanga operation had yielded recoveries in excess of 97%, higher than the 93% assumption in the May study, First Cobalt said.
The May study had put initial capex at US$56 million, after-tax NPV8 at $139 million and IRR of 53%, assuming a cobalt price of $25/lb.
The company also said it remained "optimistic for a positive outcome" in terms of discussions regarding government support.
It did not anticipate any difficulties securing sufficient feedstock for the refinery's nameplate capacity of 5,000 tonnes per annum and said diversification of supply would help offset the risk of supply interruptions from any single operation.
The permitted refinery was put on care and maintenance in 2015.
First Cobalt was hoping to commission the plant in 2022, according to an October presentation.
Its shares closed unchanged yesterday at C13c, in the middle of a one-year range of 7.5-18c, valuing it at $50 million (US$38 million).