Key Highlights

  • Anson's iron removal pre-treatment reduced iron in third-party brine from 13 ppm to 0 ppm in a single pass.
  • Lithium content moved from 130.13 ppm to 127.41 ppm, within the company's ±5 per cent allowance.
  • The company is in discussions about a possible sale of the technology to generate additional revenue.
  • The test was carried out at Anson's Lithium Innovation Center using generation 1 of the process system.

Anson Resources Limited (ASX:ASN) has reported successful test work on a third-party lithium brine using its iron removal pre-treatment process. The announcement, dated 10 November 2026, describes a process that removes iron from raw brine before it enters direct lithium extraction, and it says the company is in discussions about a possible sale of the technology. The company frames the technology as a potential source of Revenue that could support its Green River Lithium Project without diluting existing shareholders.

Results of the Iron Removal Test

The test was conducted at Anson's Lithium Innovation Center using generation 1 of the process system. Iron in the brine fell from 13 parts per million to zero, with the iron precipitating immediately as air was injected using a proprietary technique adapted from the oil industry. The company says this produced a clear brine ready for Supply into direct lithium extraction.

Assays from Anson's analytical work at Green River, Utah, indicated that the process did not materially affect lithium content. Lithium measured 130.13 parts per million before treatment and 127.41 parts per million after, within the company's stated variation allowance of plus or minus 5 per cent. Boron and bromine levels were broadly unchanged, while sodium and chloride moved slightly.

Why Iron Removal Matters

Iron in brine can interfere with lithium extraction processes and cause operational problems, so removing it before extraction can improve the performance of the process. The company's test was carried out on brine from a third party, which suggests the technology may be applicable beyond Anson's own resource.

Laboratory-scale results on one brine sample do not establish performance across varied brines or at commercial scale. The company's generation 1 system is an early prototype, and its design, throughput and costs would need to be demonstrated in larger tests.

Commercial Path and Dilution Question

The company says discussions about a possible sale of the technology could generate revenue that supports its Green River project without dilution to existing shareholders. A sale would depend on negotiations with a counterparty and agreed terms, none of which are described in the announcement. The company has not indicated a price or timetable for any transaction.

Risks and Matters to Monitor

The technology remains at an early stage. Scale-up, consistency across brines, and the cost of operating the process will all affect whether it is commercially attractive to a buyer or to the company itself. The Green River project's own financing and development timetable will also shape how the technology is used. Any sale would be subject to terms that the company has not yet disclosed.

Final Word

Anson's iron removal test shows the process working on third-party brine and leaving lithium content largely unchanged. Whether the technology becomes a revenue source depends on the outcome of sale discussions and on larger-scale testing. The company's next updates on those discussions and on the development of the generation 2 system will show whether the technology can contribute value beyond the Green River project.