China's major battery materials producer Huayou will place half of its mixed hydroxide precipitate (MHP) capacity at its Indonesian subsidiary, Huafei Nickel Cobalt, into temporary care and maintenance from 1 May, citing elevated sulphur costs and prolonged high operating rates at the facilities, the company said on 28 April.
The move is described as a short-term response to elevated input costs and deferred maintenance requirements following sustained high utilisation. The company does not expect the temporary suspension to adversely affect its long-term development but did not disclose a timeline for operations to resume.
Sulphur prices have risen significantly because of the ongoing US-Iran war, as nearly half of global seaborne sulphur trade transits the strait of Hormuz. Argus-assessed granular sulphur cfr Indonesia prices at $948/t on a midpoint basis on 23 April, up by $434/t, or 84pc, from $514/t cfr on 26 February, before the outbreak of the war. Sulphur is now estimated to account for 35-40pc of high pressure acid leaching (HPAL) operating costs, up from a more typical 25pc. Indonesia is heavily exposed to the supply shock, having sourced around 75pc of its 5.34mn t of sulphur imports from the Middle East last year.
The temporary suspension has supported MHP market sentiment and prices. Offers for MHP rose to 95pc of London Metal Exchange (LME) nickel prices for nickel payable on 28 April, from 91pc in March, although no deals have yet been concluded at this level.
Huafei secured permits to import sulphuric acid from Jakarta in April, although approved volumes have not been disclosed.
Huayou is also seeking to reduce its exposure to the sulphur market by accelerating process upgrades and expanding sulphur sourcing channels. The company aims to address the issue through the construction of acid production projects using pyrite and phosphogypsum, which are expected to come on stream by the end of 2026. Huayou has not specified which subsidiaries will deploy the technology.
Huafei began production at Weda Bay in North Maluku province in 2023 and has a capacity of 120,000 t/yr of nickel equivalent in the form of MHP. Huafei is Huayou's second MHP project in Indonesia, following Huayue in Morowali, Sulawesi province, which started production in 2021 and has 60,000 t/yr of nickel-equivalent capacity in the form of MHP.
Output at the two projects has exceeded their nameplate capacities. Huayou's MHP shipments reached 236,500 t in 2025, up by 30pc year-on-year, while total nickel production across all products rose by 59pc on the year to 292,500t in nickel metal equivalent.
Huayou's KNI MHP project remains under construction. The project is a joint venture between Huayou, Brazilian multi-metals mining group Vale and US automaker Ford, with planned capacity of 120,000 t/yr in nickel metal equivalent and start-up scheduled for December.
