Hertha Raises $133m to Scale Single-Step High-Purity Iron

Hertha, a producer of high-purity iron, has secured $133-million in venture capital funding, Mining Weekly reported.

The company will direct the capital toward scaling its single-step production process. The round ranks among the larger recent venture commitments to metals production technology, where investors have been hunting for cleaner and cheaper routes to materials that steelmaking and advanced manufacturing demand.

High-purity iron commands a premium over conventional iron units because it serves applications that cannot tolerate contamination — segments that span specialty alloys, electronics-grade materials and high-end steel products. Producers who can hit purity targets in a single process step, rather than through multi-stage refining, stand to cut both capital intensity and operating cost.

Mining Weekly did not disclose the names of the investors participating in the round, nor did it report a valuation for Hertha. The publication framed the raise as funding for production scaling, signalling that the company's technology has moved past early development toward commercial volumes.

The deal underscores a broader pattern in industrial investing: venture capital, historically concentrated in software and biotech, is now financing process innovation in metals and mining. Backers are betting that step-change improvements in extraction and refining chemistry — rather than incremental efficiency gains at existing plants — can capture value as manufacturers push for cleaner supply chains and higher-spec inputs.

For Hertha, the immediate task is execution. Scaling a single-step process from demonstration to industrial throughput typically exposes chemical and engineering risks that pilot plants do not reveal, and the $133-million will test whether the company can make that transition. The raise gives Hertha the balance sheet to attempt it; the market for high-purity iron will judge the result.