Emmerson (LSE:EML) has been granted a UK patent for its Khemisset Multi-mineral Process, a proprietary technology developed for the Khemisset Potash Project that may also have applications across other potash operations worldwide. The patented process is designed to significantly improve operational efficiency by reducing water consumption by around 50%, increasing muriate of potash (MOP) recovery rates to approximately 91%, and producing the high-value fertiliser products struvite and vivianite.
The company believes the technology offers both commercial and environmental advantages. In addition to enhancing potash recovery, the production of slow-release fertilisers could help reduce phosphate run-off and lower application frequency, potentially improving sustainability outcomes for agricultural users while creating additional revenue opportunities.
Alongside this intellectual property milestone, Emmerson and its subsidiaries continue to pursue an arbitration claim against Morocco through the International Centre for Settlement of Investment Disputes (ICSID). The company is seeking compensation of US$1.215 billion, alleging breaches of a bilateral investment treaty relating to the Khemisset Potash Project. The proceedings highlight the regulatory and geopolitical challenges surrounding the asset, and the eventual outcome could have a significant impact on Emmerson’s financial position and future strategic direction.
The company’s overall outlook remains weighed down by weak financial fundamentals, including the absence of revenue, widening losses, persistent negative free cash flow and declining equity. Technical indicators provide some support, with the shares trading above key longer-term averages and momentum measures remaining positive. However, valuation metrics offer limited assistance due to the company’s loss-making position and lack of dividend support.
More About Emmerson plc
Emmerson plc is an AIM-listed mining and development company focused on the fertiliser sector, with its principal asset being the Khemisset Potash Project in Morocco. The project is intended to supply potash products to agricultural markets and forms the cornerstone of the company’s long-term growth strategy.
In addition to advancing its mining interests, Emmerson is building a portfolio of intellectual property linked to evaporite mineral processing technologies. The company aims to commercialise these innovations across potash-producing regions globally, creating additional opportunities beyond the development of its core project assets.

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