Indonesian cobalt production capacity from its high-pressure acid leach (HPAL) operations will more than double to 114,000t in 2027 from 55,000t in 2024, National Economic Council member and executive secretary Septian Hario Seto has said.
But there will probably not be significant capacity expansion beyond 2027, Seto told the Cobalt Congress 2025 conference on 14 May in Singapore. Xu Aidong, cobalt branch chief expert and adviser at the China Nonferrous Metals Industry Association, agreed that capacity will probably stick given slower-than-expected nickel consumption growth and rising costs for HPAL projects that include increasing sulphur prices used in hydrometallurgical production lines. Seto expects cobalt prices to trend up further if the Democratic Republic of Congo's (DRC) cobalt export ban continues but warned that the measure could backfire as it could prompt technology adaptation to lower the cobalt content in batteries.
"I think we [saw] in 2017 and 2018 [that the battery sector] responded with massive adoption of the [nickel-cobalt-manganese] NCM 811, so you are compromising long-term demand of cobalt with this one," Seto said.
Mixed hydroxide precipitate (MHP) production in Indonesia is still able to generate 30-40pc profit margins even with nickel prices around $15,000/t, Seto added, attributing that partly to the cobalt content. The country exported almost 1.56mn t of MHP last year, with cobalt exports up to around 44,350t.
Indonesia previously separated the MHP before further processing into nickel sulphate and cobalt sulphate. "But nowadays, we directly ship the MHP and there is one factory in Indonesia that can process further the MHP going into the precursor without doing the crystallisation of the nickel sulphate," Seto said.
"As long as we are increasing the MHP production in Indonesia, it's not possible to [be asked] to control this cobalt," Seto said, adding that the country does not see cobalt as an "independent mineral" but one closely intertwined with nickel.
Indonesia's position on nickel is very similar to the DRC's position on cobalt, said Seto, where the biggest producer has to be "careful" and "responsible" in ensuring sufficient supply in the market or risk being treated as "not reliable".
A DRC decision on whether to extend the export ban or impose a strict limitation of exports "in part" has yet to be made. The country's mineral markets regulator Arecoms said during the conference that it will communicate its decision as planned at the end of the cobalt export suspension period, at odds with Chinese market participants' expectations for the conference.