US 12,168,833 B1
Electrification and leaching agent for mining rare earth ore by electrification
Hongping He, Guangdong (CN); Jianxi Zhu, Guangdong (CN); Gaofeng Wang, Guangdong (CN); Xiaoliang Liang, Guangdong (CN); Wei Tan, Guangdong (CN); Jie Xu, Guangdong (CN); Jingming Wei, Guangdong (CN); Shichang Kang, Guangdong (CN); Yongqiang Yang, Guangdong (CN); Yongjin Xu, Guangdong (CN); and Xiaoshan Zou, Guangdong (CN)
Assigned to Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou (CN)
Filed by Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangdong (CN)
Filed on Jan. 11, 2024, as Appl. No. 18/410,527.
Claims priority of application No. 202311194801.1 (CN), filed on Sep. 15, 2023.
Int. Cl. C22B 3/04 (2006.01); C25C 1/22 (2006.01)
CPC C25C 1/22 (2013.01) 5 Claims
OG exemplary drawing
 
1. A method for mining rare earth ore by electrification, comprising:
step 1: arranging at least two rows and at least one column of liquid injection holes in a mining area, arranging electrically conductive liquid injection pipes in the liquid injection holes, and connecting N electrically conductive liquid injection pipes in a same row in parallel to an electrification control system according to currents when each of the electrically conductive liquid injection pipes is electrified, wherein N≥2 and N is a positive integer; and
step 2: adding a leaching agent into the liquid injection holes, and then applying a direct current between the electrically conductive liquid injection pipes by the electrification control system,
wherein the leaching agent is selected from a leaching agent for mining rare earth ore by electrification;
wherein the leaching agent for mining rare earth ore by electrification comprises:
ammonium salt and small molecular betaine; or
calcium salt and small molecular betaine; or
magnesium salt and small molecular betaine; or
sodium salt and small molecular betaine; or
potassium salt and small molecular betaine.