World First: TMC and PAMCO Achieve Breakthrough in Commercial-Scale Processing of Polymetallic Nodules, Successfully Producing Calcine

The Metals Company
The Metals Company

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Inspecting the Kiln

One of PAMCO's experienced operating personnel monitors the production of calcine inside the Rotary Kiln Electric-Arc Furnace.
One of PAMCO's experienced operating personnel monitors the production of calcine inside the Rotary Kiln Electric-Arc Furnace.
  • TMC and PAMCO successfully produced calcine from a 2,000-tonne sample of nodules collected during TMC subsidiary Nauru Ocean Resources Inc.’s 2022 test mining, at PAMCO’s Hachinohe Rotary Kiln Electric-Arc Furnace (RKEF) facility in Japan

  • The nodules were heated to remove moisture and initiate the mineral transition to metallic form, producing approximately 500 tonnes of calcine in preparation for smelting

  • In the coming months, PAMCO intends to commence the next phase of the processing trial by transferring the calcine material to its electric arc furnace for smelting into a high-grade nickel-copper-cobalt alloy and manganese silicate product

  • The goal of the commercial-scale campaign is the collection and analysis of process data and operational experience in preparation for expected definitive processing agreements between the parties

NEW YORK, Sept. 09, 2024 (GLOBE NEWSWIRE) -- TMC the metals company Inc. (Nasdaq: TMC) (“TMC” or the “Company”), an explorer of the world’s largest undeveloped resource of critical battery metals, today announced that it had successfully produced high temperature material (calcine) during the first phase of a commercial-scale campaign to process a 2,000 tonne sample of deep-seafloor polymetallic nodules at its partner PAMCO’s Hachinohe Rotary Kiln Electric-Arc Furnace facility in Hachinohe, Japan.

Undertaken on PAMCO’s 131-meter-long #6 commercial kiln, engineers fed approximately 1200 tonnes of nodules into the kiln via conveyor at up to 60 tonnes per hour, and produced roughly 500 tonnes of calcine which will cool slowly before being transferred to PAMCO’s demonstration smelting facility [see video]. With sufficient quantities of calcine material now produced to proceed to the next phase of the trial, PAMCO intends to commence commercial-scale smelting of the calcine into a high-grade nickel-copper-cobalt alloy and manganese silicate in the coming months.

TMC’s Head of Onshore Development, Dr Jeffrey Donald, commented: “After years of carefully-planned development, bench-scale tests, engineering studies and pilot demonstrations it’s very exciting to see the world’s first commercial-scale processing of our nodules. With decades of experience in processing nickel laterite at industrial scale in its Hachinohe facility, and with dozens of highly capable and disciplined technical and operating personnel on our project, PAMCO is the perfect partner to help optimize our near-zero-solid-waste flowsheet in preparation for commercial production. We appreciate PAMCO’s professional efforts and technical contributions to the development of this process.”