MUMBAI, India, Oct. 31 -- Intellectual Property India has published a patent application (202411025005 A) filed by Council Of Scientific And Industrial Research, New Delhi, on March 27, 2024, for 'a dry process method and apparatus for treatingthe wollastonite ore thereof.'
Inventor(s) include Santosh Deb Barma; Prasanta Kumar Senapati; Danda Srinivas Rao; Rakesh Saini; Prasanta Kumar Baskey; and Chinthapudi Eswaraiah.
The application for the patent was published on Oct. 31, under issue no. 44/2025.
According to the abstract released by the Intellectual Property India: "The current innovation relates to the development of a dry process-based method and apparatus for the treatment of wollastonite feed having starting chemical composition of CaSiO3 content below 79% and Fe2O3 content above 7% to produce the final wollastonite product having product composition of CaSiO3 content above 95% and Fe2O3 content below 0.5%. The present process consists of two stages of processing which includes pre-processing the wollastonite ore to remove the unwanted impurities (such as calcite, iron oxides, etc.) in the first stage, whereas treating the pre-processed wollastonite ore in a newly developed apparatus to separate wollastonite (needle-shaped particles) from freely associated calcite and silica (granular-shaped particles) in the second stage."
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