US 12,325,896 B2
Treatment method and application for laterite nickel ore leaching solution with high calcium and magnesium content
Satryo Soemantri Brodjonegoro, Jakarta (ID); Kaihua Xu, Shenzhen (CN); Rizky Wanaldi, Jakarta (ID); Tegar Mukti Aji, Jakarta (ID); Aad Alief Rasyidi Baking, Jakarta (ID); Andi Syaputra Hasibuan, Jakarta (ID); Piyan Rahmadi, Jakarta (ID); and Wei Liu, Jakarta (ID)
Assigned to PT ESG NEW ENERGY MATERIAL, Jakarta (ID); PT QMB NEW ENERGY MATERIALS, Jakarta (ID); GEM CO., LTD., Shenzhen (CN); and PT GEM INDONESIA NEW ENERGY MATERIALS, Jakarta (ID)
Appl. No. 18/870,477
Filed by PT ESG NEW ENERGY MATERIAL, Jakarta (ID); PT QMB NEW ENERGY MATERIALS, Jakarta (ID); GEM CO., LTD., Shenzhen (CN); and PT GEM INDONESIA NEW ENERGY MATERIALS, Jakarta (ID)
PCT Filed Jul. 31, 2023, PCT No. PCT/CN2023/110218
§ 371(c)(1), (2) Date Nov. 29, 2024,
PCT Pub. No. WO2025/025056, PCT Pub. Date Feb. 6, 2025.
Prior Publication US 2025/0115978 A1, Apr. 10, 2025
Int. Cl. C22B 23/00 (2006.01); C22B 3/00 (2006.01); C22B 3/32 (2006.01)
CPC C22B 23/0461 (2013.01) [C22B 3/32 (2021.05)] 10 Claims
OG exemplary drawing
 
1. A treatment method for laterite nickel ore leaching solution with high calcium and magnesium content, comprising the following steps:
S1. preparing a synergistic extractant from 2-hexyldecanoic acid and a first extractant, diluting the synergistic extractant by adding a diluent, and then saponifying with a liquid alkali to obtain an extracted organic phase, wherein the first extractant is an HBL110 extractant or an HBL116 extractant;
S2. mixing the extracted organic phase with a laterite nickel ore leaching solution with a high calcium and magnesium content, and performing nickel-cobalt co-extraction to obtain a first loaded organic phase and a raffinate; wherein in the laterite nickel ore leaching solution with a high calcium and magnesium content, the content of calcium ions is 0.5-1 g/L, the content of magnesium ions is 4-7 g/L, the content of nickel ions is 2.5-4 g/L and the content of cobalt ions is 0.2-0.5 g/L;
S3. washing the first loaded organic phase with a washing solution to obtain a second loaded organic phase and washing water, wherein the washing water is refluxed to the laterite nickel ore leaching solution with a high calcium and magnesium content;
S4. adding a reverse extracting solution to the second loaded organic phase for reverse extracting to obtain a nickel-cobalt salt solution product and a reverse extracted organic phase, and crystallizing the nickel-cobalt salt solution to obtain a nickel-cobalt salt; and
S5. saponifying the reverse extracted organic phase to obtain a regenerated extracted organic phase.