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Magazine: Sulphur

Operations halted at El Teniente mine

The El Teniente mine, located in the O'Higgins region, suffered a collapse on 31 July. The collapse in the Andesita sector of the mine is understood to have been as a result of seismic activity that registered 4.2 on the Richter scale. It remains unknown whether the seismic activity was caused by the mining operations or natural activity, according to industry sources. Underground operations are to be halted for an unknown period of time while the open air sector, which represents around 10% of the total production, will remain open, according to industry participants.

Upcycle launches potassium sulphate project

Upcycle Minerals Inc. has launched a brine to potassium sulphate fertilizer with carbon capture project in south-central Saskatchewan. The company says that it plans to use its mineral assets, including the Tuxford potash mineral permit and the Whiteshore and Lydden Lake Alkali Leases as feedstock for its patented process. Along with the production of potassium sulphate (SoP), the process also generates two co-products with established markets; ammonium sulphate fertilizer and precipitated calcium carbonate. Upcycle says that it intends to become an ecologically conscious, low-cost producer of SoP with low net CO2 emissions.

BADC signs import deals

In addition to the above deal with Morocco, the Bangladesh Agricultural Development Corporation (BADC), part of the Bangladesh Ministry of Agriculture, has signed a contract to import both triple superphosphate (TSP) and di-ammonium phosphate (DAP) fertilisers from Malaysia. The agreement was signed on 17 July 2025 in Kuala Lumpur by Mohammed Ruhul Amin Khan, chairman of BADC, and representatives of Selcra Niaga. Under the contract, BADC will import 280,000 tonnes of TSP and 280,000 tonnes of DAP from Malaysia. According to BADC officials, this landmark deal is expected to play a crucial role in ensuring the timely delivery of non-urea fertilisers to farmers. The move aims to strengthen Bangladesh's efforts toward building an efficient and sustainable agricultural system.

Running the gamut

This issue of Sulphur magazine contains a preview of CRU’s Sulphur + Sulphuric Acid conference in Woodlands, Texas, which is being held from November 3rd to 5th this year, giving delegates the opportunity to meet and discuss some of the trends which are continuing to change the sulphur and sulphuric acid industries. Some of this is echoed in our editorial coverage this issue; the rise of electric vehicles and the continuing electrification of society is changing demand for metals and impacting upon both sulphur and sulphuric acid markets alike. As CRU’s principal analyst Peter Harrison discusses on pages 36-37, battery demand for nickel is leading to a surge in new nickel leaching capacity in Indonesia which is drawing in greatly increased volumes of sulphur, while rising demand for copper is leading to additional volumes of smelter acid from China, India and Indonesia which are impacting the merchant market for acid, as detailed by CRU’s Viviana Alvorado on pages 38-40. In the United States, new lithium mines will require additional sulphur (see pages 22-23). Rare earths and battery metal recovery will form a major topic on the first day of the Sulphur + Sulphuric Acid conference, with speakers from Lithium Americas, one of the pioneers of the new US lithium industry.

Copper output begins at Rio Tinto-backed project

Gunnison has started producing pure copper cathodes at its Johnson Camp Mine (JCM) in southeast Arizona, United States, from a solvent extraction-electrowinning (SX-EW) circuit and using leaching technology from Rio Tinto-owned Nuton. As well as giving Gunnison exclusive rights to deploy the proprietary process on run-of-mine ore, Nuton is a financial partner of the Phoenix-headquartered mine developer which has restarted copper production at past-producing JCM. The company’s next goal is to ramp-up to nameplate plant capacity of 25 million lbs/year (11,300 t/a) of finished copper.