MUMBAI, India, July 31 -- Intellectual Property India has published a patent application (202647088217 A) filed by Rhodia Operations on July 20, 2026, for Hydrothermal Process For The Preparation Of Silicate And Precipitated Silica From Spent Foundry Sand.
Inventors include Keita, Camille; Feral-Martin, Cdric; and Chaussee, Thomas.
The application for the patent was published on July 24, 2026, under issue no. 30/2026.
Abstract: The invention relates to a process for the preparation of silicate, preferably an alkali metal silicate, from a spent foundry sand using a hydrothermal route comprising the step of reacting said spent foundry sand with a base, preferably an alkali metal hydroxide, in an aqueous reaction medium, wherein the process is free of any thermal pre-treatment step as applied in prior art processes. The invention also relates to a process for the preparation of precipitated silica using said silicate.
Disclaimer: Curated by HT Syndication.
