Check patentability & draft patents in minutes with Patsnap Eureka AI!

An improved method for lithium processing

A technology for recovering lithium and solution, applied in chemical instruments and methods, improvement of process efficiency, lithium carbonate;/acid carbonate, etc.

Inactive Publication Date: 2021-04-16
利特科技工业有限公司
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] There are currently no satisfactory processes for separating magnesium from metallurgical solutions to produce economical magnesium and metal streams of sufficient purity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An improved method for lithium processing
  • An improved method for lithium processing
  • An improved method for lithium processing

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0069] A 1 liter solution containing 2800 mg magnesium; 617 mg lithium; 4190 mg sodium; chloride was in equilibrium after electrolysis at 4.5 amps for 2 hours.

[0070] According to the invention, the electrolytic cell has two membranes, chloride is received from the cathodic compartment through the anion exchange membrane and hydrogen ions are received from the anode compartment through the cation exchange membrane, acid is recovered in the central compartment and magnesium is precipitated in the cathodic compartment - flows out of the electrolytic cell and settles in batch recirculation vessel; sulfuric acid as supporting anolyte - electrolysis of water produces oxygen and hydrogen ions at the anode and hydrogen and hydroxide ions at the cathode.

[0071] The results of this test are in figure 2 displayed in . After electrolysis with 4.5 amps for 2 hours, the magnesium was reduced to 0.7 mg; the lithium remained effectively unchanged, the sodium remained unchanged, and 9 g...

example 2

[0073] The experiment was the same as Example 1, but this time lithium-doped seawater (real impurity rather than synthetic solution) was used as the feed solution. The result is below and image 3 displayed in .

[0074]

[0075] 6.3 g of HCl was produced (51.4% current efficiency).

example 3

[0077] Fortify 10 liters of seawater samples, each component has the following mass concentration:

[0078] Na-96.0g / L

[0079] K-5.8g / L

[0080] Li-0.5g / L

[0081] Mg-1.7g / L

[0082] Ca-0.5g / L

[0083] SO4-11.6g / L

[0084] Cl-155.7g / L

[0085] B-0.5g / L

[0086] The solution was electrolyzed with 5 amps for 11 hours. As a result, 91.5% of magnesium was removed, and the pH of the final solution was >11; about 45% of calcium was removed; the precipitation of magnesium was very satisfactory; 44.48 grams of hydrochloric acid were produced, reflecting a total current efficiency of about 61%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for improved processing of lithium metallurgical solutions comprises the steps of: i. Directing a lithium leach solution containing magnesium to an electrochemical magnesium removal step to form a magnesium depleted lithium leach solution; ii. Directing the magnesium depleted lithium leach solution of step i) to downstream concentration and recovery processes wherein the electrochemical magnesium removal step is a 3-chamber electrochemical configuration to produce magnesium hydroxide precipitate and a separate hydrochloric acid stream, as recoverable by-products.

Description

technical field [0001] The present invention relates to an improved method of processing lithium metallurgical solutions. More specifically, the invention relates to processes for removing impurities from lithium metallurgical solutions. Background technique [0002] The following discussion of the background art is intended only to facilitate an understanding of the present invention. What is discussed is not an acknowledgment or admission that any material referred to is or was part of the common general knowledge as at the priority date of the application. [0003] In all lithium process flows, a critical process step is the removal of magnesium from lithium brines to recover lithium of satisfactory purity. Typically, soda ash is used to precipitate magnesium and calcium dissolved with the lithium through hard rock treatment from the pegmatite, minimizing lithium loss in the process. [0004] In the brines commonly found in South America, traditional processes rely on ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22B26/12B01D61/44C25B9/19C25B9/23
CPCC22B26/12B01D61/445C01D15/08B01D2311/2684B01D2325/42C25B1/20C01B7/035C01F5/14C25B9/23C22B3/20B01D61/44Y02P10/20C22B3/10C22B3/24C22B26/22
Inventor 亚当·布伦斯科特·伊斯特伍德
Owner 利特科技工业有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com