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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11891678 B1

PDFFull Text
Date of Patent:
Feb. 06, 2024

Filed:

Mar. 11, 2021

Method for optimizing liquid injection process of ionic rare earth ore

Applicants:

Jiangxi University of Science and Technology, Jiangxi, CN;

Longyan Rare-earth Development Co., Ltd., Fujian, CN;

Inventors:

Guanshi Wang, Jiangxi, CN;

Ping Long, Jiangxi, CN;

Wenli Liu, Jiangxi, CN;

Ying Huang, Jiangxi, CN;

Dingshun He, Jiangxi, CN;

Lei Qin, Jiangxi, CN;

Shili Hu, Jiangxi, CN;

Chenliang Peng, Jiangxi, CN;

Sihai Luo, Jiangxi, CN;

Guoqiang Deng, Jiangxi, CN;

Assignees:

JIANGXI UNIVERSITY OF SCIENCE AND TECHNOLOGY, Jiangxi, CN;

LONGYAN RARE-EARTH DEVELOPMENT CO., LTD., Fujian, CN;

Attorney:

JCIP GLOBAL INC.

Primary Examiner:

John E Johansen

Int. Cl.
CPC ...
G06F 30/20 (2020.01); E21B 43/28 (2006.01); C22B 59/00 (2006.01); C22B 3/14 (2006.01); G06F 30/28 (2020.01); G06F 111/10 (2020.01); G06F 119/18 (2020.01);
U.S. Cl.
CPC ...
C22B 59/00 (2013.01); C22B 3/14 (2013.01); E21B 43/28 (2013.01); G06F 30/20 (2020.01); G06F 30/28 (2020.01); G06F 2111/10 (2020.01); G06F 2119/18 (2020.01); Y02P 10/20 (2015.11); Y02P 90/02 (2015.11);
Abstract

The present disclosure provides a method for optimizing a liquid injection process of ionic rare earth ore, including the following steps of: 1) testing the hydraulic properties of an ore body; 2) determining the diffusion degree of the ore body; 3) determining the spatial distribution of the rare earth grade and the impurity grade of the ore body prior to leaching; 4) determining model parameters of competitive exchange of rare earth ions and impurity ions with ammonium ions; 5) obtaining distribution of rare earth ion concentration within the ore body after completion of leaching; 6) obtaining a profile plot of a rare earth leaching rate as a function of the concentration and dosage of an injected leaching agent; and 7) determining a minimum leaching agent dosage to achieve a target leaching rate according to the profile plot, and then determining the ammonium sulfate concentration according to the minimum leaching agent dosage.

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