
TSI World Sulphur Symposium 2025
The Sulphur Institute (TSI) held its World Sulphur Symposium in Florence from April 8th-10th.
The Sulphur Institute (TSI) held its World Sulphur Symposium in Florence from April 8th-10th.
Sulphur markets have been on a tear over the past few months, driven by strong demand in Asia, with buyers primarily sourcing from the Middle East and Canada through late 2024 and into the early months of 2025. Steady buying from Indonesia and China, the two largest importers of sulphur, appears to have supported the market, in China’s case mainly for phosphate production as well as a variety of industrial processes, and in Indonesia’s case to feed the high pressure acid leach (HPAL) plants that are producing nickel for the battery and stainless steel industries. Prices saw a notable rally following the Chinese Lunar New Year celebrations. Nevertheless, this momentum finally began to shift as April began ago as the pace of price increases in Asia started to slow. As the spring fertilizer application season in China draws to a close, domestic prices began to drop, reaching the equivalent of a delivered price of around $272/t c.fr. As well as the narrowing window for spring application of phosphates, the decline was also driven by weakening demand amid uncertainty over tariffs and export restrictions. In southern China, phosphate producers continue to purchase import cargoes. A major phosphate producer in southwest China has been reported as having bought mainstream material at a price of $303/t c.fr, according to local market sources. Total sulphur port inventories in China had declined by 22,000 tonnes to 1.86 million tonnes by 16 April 2025. The volume at Yangtze River ports increased to 825,000 tonnes, while the port inventory at Dafeng decreased to 400,000 tonnes.
Verdant Minerals says it has been granted two key productive mineral leases for its Ammaroo Phosphate Project by the Northern Territory government. The company says that this significant milestone advances one of the world's largest undeveloped phosphate resources, located about 220km southeast of Tennant Creek. Acting Chief Minister and Minister for Mining and Energy, Gerard Maley, stated, “This is a significant milestone in progressing a world-class resource project that will support jobs, drive investment, and strengthen the NT’s position as a leader in resource development.”
Samsung E&A has announced the termination of its $1.6 billion contract with the Mexican state-owned oil company PEMEX for a sulphur recovery facility project. Samsung says that the contract, originally signed nearly a decade ago, has faced significant delays and suspensions due to budget cuts imposed by the client. It concerns a hydrodesulphurisation (HDS) facility aimed at removing sulphur components from diesel fuel at the Salamanca refinery in Guanajuato state, central Mexico. In a statement, Samsung E&A confirmed that they have reached an amicable agreement regarding the contract termination, stating, “We have been fully compensated for the expenses incurred during the project suspension, and since this project was not included in our sales or operating profit forecasts for this year, there will be no financial loss due to the contract termination.”
Chinese phosphate and battery chemical producer Chuan Jin Nuo Chemical (KMCJNC) has announced a $265 million plan to build a plant in Egypt to reduce its raw material and export costs. The company will construct facilities in the North African country to produce a range of intermediates and finished products, it revealed in its recent first-quarter earnings report. The plant will have a threeyear construction timeline. Planned capacities for the site are 800,000 t/a of sulfuric acid and 300,000 t/a of ammonium phosphate per year. Other core products will include phosphoric acid and sodium fluorosilicate. At full capacity, the plant is expected to generate over $41 million in net profit, according to feasibility studies.
The Middle East remains the world’s largest regional exporter of sulphur, with additional capacity continuing to come from both refineries and particularly sour gas processing.
• Global sulphur prices are expected to stay relatively stable as purchases in Asia slow down due to the closing of the purchasing window for the Chinese spring fertilizer application season.
TotalEnergies has signed an agreement with the German developer RWE to supply 30,000 t/a of green hydrogen to the Leuna refinery for fifteen years, beginning in 2030. The green hydrogen will be produced by a 300 MW electrolyser, built and operated by RWE in Lingen. Green hydrogen storage will be provided locally. The green hydrogen will be delivered by a 600 km pipeline to the gates of the refinery and will prevent the site’s emission of some 300,000 tons of CO2 beginning in 2030. This is the largest quantity of green hydrogen ever contracted from an electrolyser in Germany.
Astron Energy, a subsidiary of Glencore, says that it will spend $328 million to upgrade its South African crude oil refinery in order to comply with the country’s upcoming cleaner fuel regulations. The investment aims to bring the facility in line with South Africa’s Clean Fuels II standards, which mandate lower sulphur content in both petrol and diesel. The 100,000 bbl/d refinery near Cape Town is one of only two remaining operational refineries in the country. Astron says that construction work is already under way for a gasoline hydrotreating plant that will reduce sulphur levels to Euro 5 (<10ppm sulphur) specifications. The regulations have been delayed to July 2027 due to concerns over the cost of upgrading existing refining infrastructure. n
• Continuing oversupply means that ammonia prices should continue to come under pressure moving into 2H April, though it remains to be seen just how much further values in Asia can decline before producers begin to shutter output.