Helix Carbon Aims to Transform Iron Production with CO2 Recycling

The iron and steel sectors rank among the world’s largest contributors to pollution. While various startups have made strides in creating cleaner metal production methods, Helix Carbon believes the current approach is flawed.

Innovating with Current Infrastructure

David Brown, co-founder and CEO of Helix Carbon, asserts that any strategy aimed at decarbonizing steel production must prioritize the blast furnace. These furnaces have been vital for centuries, transforming iron ore into metallic iron, yet they also emit substantial amounts of carbon dioxide.

Rather than replacing these age-old furnaces, Helix Carbon proposes to eliminate their harmful emissions through a technology-driven solution. This method not only aims to significantly cut the carbon footprint associated with iron production but also enhances profit margins for manufacturers, an advantageous outcome for an inherently pollutive industry.

The Blast Furnace Process Explained

Traditionally, blast furnaces utilize coke—which is a processed form of coal—to convert iron ore into iron. During this process, coke is combusted to generate heat, while carbon monoxide produced from this combustion interacts with iron, effectively removing its oxygen content.

The downside? This process generates an enormous volume of CO2 that is typically vented into the atmosphere. Helix Carbon has devised a revolutionary mechanism to convert this waste CO2 back into carbon monoxide, allowing it to be recycled back into the blast furnace.

Using Electrolyzers for Carbon Recycling

The key to Helix Carbon's method lies in an electrolyzer, a sophisticated device that separates oxygen from carbon dioxide using electricity and a catalyst. Although electrolyzers are not a recent invention, Brown emphasizes that their design is specifically engineered to manage the complete exhaust stream from blast furnaces—something most traditional electrolyzers cannot do.

Conventional models tend to require pre-purified, concentrated carbon dioxide feed, which means additional processing for blast furnace exhaust, an unnecessary step that Helix Carbon aims to avoid.

Cost Savings and Industry Potential

By introducing carbon monoxide into the blast furnace, iron manufacturers are expected to reduce their reliance on coke. While estimates vary, studies suggest that coke consumption could potentially decrease by as much as 90%; Helix Carbon proposes commencing with a 33% reduction. This implementation could yield significant savings—projected at $14 per ton of iron produced.

“While that may sound minor, the iron industry operates with notoriously slim profit margins,” Brown noted.

A Lucrative Market Opportunity

The combined value of the iron and steel industry stands at approximately $2 trillion, making it an attractive arena for innovative startups. However, the sector is notorious for its slow adaptability, largely due to the longevity of its equipment, with some blast furnaces still operating after over a century.

To generate revenue sooner, Helix Carbon plans to engage with the specialty chemicals sector first. “We don’t need to first capture the CO2; we utilize it immediately,” Brown explained. This opens the possibility of producing chemicals directly from waste streams created during the iron production process.

Helix Carbon made a notable appearance at the Startup Battlefield pitch competition during the TechCrunch Disrupt event in San Francisco, showcasing its groundbreaking technology and business model to an eager audience from October 13-15.