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Duranium

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Reshoring critical metal production

Summer 2025Founded 202510 peopleSan Francisco, CA, USA

About

China and Russia control the world’s critical minerals. We can produce Titanium, Magnesium, Aluminum, Zirconium & Hafnium in the U.S. more profitably than any existing process, and carbon neutrally via co-production. Carbochlorination is the primary process for producing critical metals like titanium, hafnium, and zirconium, and was once the standard for magnesium. The problem: conventional carbochlorination relies on purchasing carbon feedstocks, wastes valuable byproducts, and is highly CO₂-intensive. Duranium changes this with a novel reactor that recycles CO₂ emissions back into feedstock (CO) while generating a valuable co-product (bleaching agents). This closed loop slashes emissions and delivers Chinese-level metal pricing without subsidies — unlocking the full potential of carbochlorination for U.S. critical mineral production.

Founders · 2

Brenden Prins-McKinney
Brenden Prins-McKinneyFounder/CEO
McKinseyStanford

Co-founder & CEO of Duranium, working to reshore critical metal production. Previously a consultant with McKinsey & Co. in D.C., where I advised the DoD on reshoring critical chemical production. Graduate of Stanford Law School where I was a Knight-Hennessy Scholar.

Berkley Noble
Berkley NobleFounder/CTO

Co-founder & CTO of Duranium, working to reshore critical metal production. My expertise lies in molten-salt electrolysis. I hold a a patent for an electrochemical metal cell and built the only U.S. pilot magnesium electrolyzer in the last 20+ years.

Launch

Launched on Y Combinator · Sep 2025
View launch post ↗

Reshoring critical light-weight metal production (Ti, Mg, Al, Zr, Hf) — more profitably than any other method through modernized carbochlorination and co-production.

Duranium announces a U.S.-based lightweight metal production process that uses a modernized carbochlorination method to produce titanium, magnesium, aluminum, zirconium, and hafnium with a closed-loop system and CO2 recycling, targeting profitability at or above 50% EBITDA and aiming to supply 12% of U.S. magnesium by 2029.

IndustrialsManufacturing and RoboticsManufacturingAdvanced MaterialsClimateTech

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