MUMBAI, India, June 6 -- Intellectual Property India has published a patent application (202417086051 A) filed by Korea Zinc Co. Ltd.; and Kemco, Seoul, Republic of Korea, on Nov. 8, 2024, for 'all-in-one nickel smelting method for nickel oxide recovery from raw materials 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 nickel smelting method comprising: (A-i) a reduction heat treatment process for heat-treating a first raw material containing nickel and lithium; (B) a first leaching process for leaching the heat-treated product generated in the reduction heat treatment process; (A-ii) a first roasting process for heat-treating a second raw material containing nickel and sulfur; (C) a second leaching process for leaching the first leaching residue generated in the first leaching process and the roasted ore generated in the first roasting process; (D) a neutralization process for neutralizing the second leachate generated in the second leaching process; (E) a purification process for removing impurities contained in the post-neutralization solution generated in the neutralization process; (F) a precipitation process for performing precipitation on the post-purification solution generated in the purification process; and (G) a second roasting process for recovering nickel from the precipitated residue by roasting the precipitated residue generated in the precipitation process."
The patent application was internationally filed on Apr. 18, 2024, under International application No.PCT/KR2024/005240.
Disclaimer: Curated by HT Syndication.
