Brimstone are reinventing how the world makes construction materials such as Cement. Aluminum. Steel.
The industries that built civilization haven’t innovated in decades. Brimstone is changing that — and creating the next generation of heavy industry.
Brimstone was founded in 2019 to solve a hard problem: how to make the materials the world relies on—cement, steel, aluminium, and other critical minerals — more efficiently, sustainably, and at lower cost.
For centuries, these materials have been produced separately, each requiring its own feedstock, factory, and process. But Brimstone developed a breakthrough solution: co-production. This proven industrial strategy uses a single feedstock – GABRO IGNEOUS ROCK – and shared equipment to manufacture multiple products at once. It lowers costs per product, eliminates waste, and multiplies revenue.
Co-production is a proven strategy in heavy industry, having already reshaped dozens of commodity markets and established three great refineries: oil, fertilizers, and complex metallic sulfides (copper, platinum group metals, etc.). The massive economic advantage of the refinery co-production model- slashing costs by sharing – helped make Exxon the largest independent oil company and Freeport the largest copper company.
Brimstone is building the fourth great refinery. Brimstone’s Rock Refinery® will use this same strategy to produce cement, steel (iron), aluminium, and other critical materials, all from globally abundant feed rocks. The first plant will debut the Minimum Viable Process (MVP), which will produce cement, alumina, and SCM. Future plants will deliver additional products.
Brimstone’s process elementally separates calcium-bearing silicate rocks such as Gabbro into their constituent elements, including calcium (Ca), aluminum (Al), iron (Fe), silicon (Si), and magnesium (Mg). Today, China dominates production of Brimstone’s core products, including aluminum, steel, magnesium, and titanium. Brimstone’s feed rock is cheap and available at the surface of every continent, making production no longer constrained to a few, resource-rich countries. Today, only four countries produce enough ore to meet U.S. demand for steel, and only six can meet U.S. demand for aluminum. With Brimstone’s technology, virtually any country, including the U.S., can produce these vital materials locally at low cost.
Because Brimstone’s process uses a carbon-free rock, it avoids the CO2 found in limestone that accounts for about 60% of the carbon emissions from incumbent cement producers. It is also energy-agnostic and fully electrifiable. When solely using clean energy and inputs, Brimstone’s carbon emissions are zero. In addition to being lower carbon than conventional processes, it’s also significantly more efficient: Brimstone’s MVP produces 7x as much product per tonne of mined material, dramatically reducing waste, tailings, and industrial blight while improving economics.
