US 12,403,413 B2
Method for green and low-cost extraction of nickel-cobalt from laterite nickel ore
Kaihua Xu, Shenzhen (CN); Satryo Soemantri Brodjonegoro, Jakarta (ID); Wenjing Wan, Jakarta (ID); Tegar Mukti Aji, Jakarta (ID); Rizky Wanaldi, Jakarta (ID); Piyan Rahmadi, Jakarta (ID); Andi Syaputra Hasibuan, Jakarta (ID); and Emil Salim, Jakarta (ID)
Assigned to PT QMB NEW ENERGY MATERIALS, Jakarta (ID); PT ESG NEW ENERGY MATERIAL, Jakarta (ID); GEM CO., LTD., Shenzhen (CN); and PT GEM INDONESIA NEW ENERGY MATERIALS, Jakarta (ID)
Appl. No. 18/870,437
Filed by PT QMB NEW ENERGY MATERIALS, Jakarta (ID); PT ESG NEW ENERGY MATERIAL, Jakarta (ID); GEM CO., LTD., Shenzhen (CN); and PT GEM INDONESIA NEW ENERGY MATERIALS, Jakarta (ID)
PCT Filed Jul. 31, 2023, PCT No. PCT/CN2023/110219
§ 371(c)(1), (2) Date Nov. 28, 2024,
PCT Pub. No. WO2025/025057, PCT Pub. Date Feb. 6, 2025.
Prior Publication US 2025/0170496 A1, May 29, 2025
Int. Cl. B01D 15/18 (2006.01); B01D 15/20 (2006.01); B01D 15/42 (2006.01); C22B 3/00 (2006.01); C22B 3/24 (2006.01)
CPC B01D 15/1885 (2013.01) [B01D 15/1871 (2013.01); B01D 15/203 (2013.01); B01D 15/426 (2013.01); C22B 3/24 (2013.01); C22B 23/0453 (2013.01); C22B 23/0415 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for green and low-cost extraction of nickel-cobalt from laterite nickel ore, comprising the following steps:
(1) iron removing pretreatment: adding an iron removing agent to a high-pressure leaching solution of the laterite nickel ore to reduce an iron concentration to less than 0.2 g/L to obtain a laterite nickel ore leaching solution;
(2) nickel adsorption: adsorbing and enriching nickel in the laterite nickel ore leaching solution using a first resin adsorption process to obtain a nickel adsorption resin and a nickel adsorption tail liquid; wherein the nickel adsorption resin is desorbed to obtain a crude nickel solution;
(3) cobalt adsorption: subjecting the nickel adsorption tail liquid to cobalt adsorption and enrichment by a second resin adsorption process and to obtain a cobalt solution by desorbing; and
(4) copper adsorption: subjecting the crude nickel solution to a third resin adsorption process for removing copper to obtain a purified nickel solution.