US 11,697,862 B2
Mineral processing method
Tsuyoshi Hirajima, Fukuoka (JP); Hajime Miki, Fukuoka (JP); Gde Pandhe Wisnu Suyantara, Fukuoka (JP); Yuji Imaizumi, Niihama (JP); Yuji Aoki, Niihama (JP); and Eri Takida, Niihama (JP)
Assigned to KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Fukuoka (JP); and SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
Appl. No. 16/470,228
Filed by KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, Fukuoka (JP); and SUMITOMO METAL MINING CO., LTD., Tokyo (JP)
PCT Filed Jun. 1, 2018, PCT No. PCT/JP2018/021115
§ 371(c)(1), (2) Date Jun. 16, 2019,
PCT Pub. No. WO2019/008962, PCT Pub. Date Jan. 10, 2019.
Claims priority of application No. 2017-133942 (JP), filed on Jul. 7, 2017; and application No. 2018-078157 (JP), filed on Apr. 16, 2018.
Prior Publication US 2019/0360072 A1, Nov. 28, 2019
Int. Cl. C22B 34/34 (2006.01); B03D 1/002 (2006.01); C22B 3/22 (2006.01); C22B 15/00 (2006.01)
CPC C22B 34/34 (2013.01) [B03D 1/002 (2013.01); C22B 3/22 (2013.01); C22B 15/0084 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A mineral processing method, comprising:
a conditioning step of adding sulfite as a surface treatment agent to a mineral slurry containing a copper mineral and a molybdenum mineral; and
a flotation step of performing flotation which separates the molybdenum mineral as a floating ore and the copper mineral as a precipitating ore of the mineral slurry after the conditioning step,
wherein the conditioning step comprises adding a pH adjusting agent to adjust the pH of the liquid phase of the mineral slurry to range from 8 to 11.5;
wherein the sulfite is sodium hydrogen sulfite; and
wherein in the conditioning step, the sodium hydrogen sulfite is added at 0.10 mol/L to 0.25 mol/L in the liquid phase of the slurry.