Metals Company announces production of nickel sulfate from seafloor nodules

TMC announced that it has successfully produced the world’s first nickel sulfate derived exclusively from seafloor polymetallic nodules. The sulfate was generated during bench-scale testing of its hydrometallurgical flowsheet design in partnership with SGS Canada, at their Lakefield, Ontario facility. Undertaken on samples of nickel-cobalt-copper matte produced by TMC in 2021, the Extractive Metallurgy team at SGS tested TMC’s efficient flowsheet to process high-grade nickel matte directly to nickel sulfate without making nickel metal, while producing fertilizer byproducts instead of solid waste or tailings. Following the successful nickel sulfate production, SGS continues testing to produce what TMC believes will be the world’s first cobalt sulfate from polymetallic nodules.