MUMBAI, India, July 31 -- Intellectual Property India has published a patent application (202647086910 A) filed by Umicore Battery Materials Finland Oy on July 16, 2026, for A Method For Treating Waste Sodium Sulphate Obtained From An Industrial Process, Use Of Waste Sodium Sulphate Obtained From An Industrial Process And An Industrial Processing Plant.
Inventors include Kauppinen, Toni; Lassi, Ulla; Vielma, Tuomas; and Tynjl, Ari, Pekka.
The application for the patent was published on July 24, 2026, under issue no. 30/2026.
Abstract: The present disclosure provides a method for treating waste sodium sulphate obtained from an industrial process (10), the method comprising providing waste sodium sulphate, providing potassium carbonate, and mixing with the waste5 sodium sulphate to obtain a reaction mixture (12), reacting the reaction mixture to convert the waste sodium sulphate to potassium sulphate and sodium carbonate, and recovering the formed potassium sulphate and/or the sodium carbonate. The present disclosure also provides an industrial processing plant comprising an industrial process (10) utilizing sodium carbonate, a source of a solution of waste0 sodium sulphate, and a device arranged to carry out the method. The present disclosure also provides use of waste sodium sulphate obtained from an industrial process (10) for preparing sodium carbonate and potassium sulphate.
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