MUMBAI, India, June 6 -- Intellectual Property India has published a patent application (202417086512 A) filed by Korea Zinc Co. Ltd.; and Kemco, Seoul, Republic of Korea, on Nov. 9, 2024, for 'all-in-one nickel smelting method for recovering nickel hydroxide 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 which includes: (A-i) a reduction heat treatment process of heat-treating a first raw material containing nickel and lithium; (B) a first leaching process of leaching a heat treatment product generated by the reduction heat treatment process; (A-ii) a roasting process of heat-treating a second raw material containing nickel and sulfur; (C) a second leaching process of leaching a first leaching residue generated by the first leaching process and a calcine generated by the roasting process; (D) a neutralization process of neutralizing a second leached solution generated by the second leaching process; (E) a purification process of removing impurities contained in a neutralized solution generated by the neutralization process; and (F) a precipitation process of performing a precipitation method for recovering nickel from a purified solution generated by the purification process, wherein nickel hydroxide is recovered by the precipitation process."
The patent application was internationally filed on Apr. 18, 2024, under International application No.PCT/KR2024/005226.
Disclaimer: Curated by HT Syndication.
