US 12,404,567 B2
Treatment method for laterite nickel ore by curing and roasting-water leaching-atmospheric pressure acid leaching
Satryo Soemantri Brodjonegoro, Jakarta (ID); Kaihua Xu, Shenzhen (CN); Yi Wang, Jakarta (ID); Evan Wahyu Kristiyanto, Jakarta (ID); Aad Alief Rasyidi Baking, Jakarta (ID); Tegar Mukti Aji, Jakarta (ID); Rizky Wanaldi, Jakarta (ID); and Andi Syaputra Hasibuan, 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. 18/870,419
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. 28, 2023, PCT No. PCT/CN2023/109905
§ 371(c)(1), (2) Date Nov. 28, 2024,
PCT Pub. No. WO2025/024979, PCT Pub. Date Feb. 6, 2025.
Prior Publication US 2025/0171875 A1, May 29, 2025
Int. Cl. C22B 3/00 (2006.01); C22B 3/08 (2006.01)
CPC C22B 23/043 (2013.01) [C22B 3/08 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A treatment method for laterite nickel ore by curing and roasting-water leaching-atmospheric pressure acid leaching, comprising the following steps:
pre-treatment: removing impurities, crushing, drying, ball-milling, and screening the laterite nickel ore raw ore to obtain a laterite nickel ore dry powder;
curing and roasting: mixing the laterite nickel ore dry powder, concentrated sulfuric acid, and sodium fluoride uniformly, and then performing curing and roasting under a reducing atmosphere to obtain a cured material;
water leaching: performing water leaching on the cured material to obtain a water leaching solution and a water leaching slag after filtration;
atmospheric pressure acid leaching: performing atmospheric pressure acid leaching on the water leaching slag to obtain an acid leaching solution and an acid leaching slag after filtration.