MUMBAI, India, June 6 -- Intellectual Property India has published a patent application (202417086815 A) filed by Korea Zinc Co. Ltd.; and Kemco, Seoul, Republic of Korea, on Nov. 11, 2024, for 'method for preparing nickel sulfate aqueous solution from raw material containing nickel.'
Inventor(s) include Choi, Heon Sik; and Lee, Je Joong.
The application for the patent was published on June 6, under issue no. 23/2025.
According to the abstract released by the Intellectual Property India: "The present invention provides a method for preparing a nickel sulfate aqueous solution, the method comprising: (A-i) a reduction heat treatment step of heat-treating a first raw material containing nickel and lithium; (B) a first leaching step of leaching a heat treatment product generated through the reduction heat treatment step; (A-ii) a roasting step of heat-treating a second raw material containing nickel and sulfur; (C) a second leaching step of leaching first leaching residues generated through the first leaching step and roasted ore generated through the roasting step; (D) a neutralization step of neutralizing a second leachate generated through the second leaching step; and (E) a solvent extraction step of purifying nickel from a neutralized solution generated through the neutralization step."
The patent application was internationally filed on July 04, 2024, under International application No.PCT/KR2024/009459.
Disclaimer: Curated by HT Syndication.
