Method for processing battery-level lithium carbonate mother liquor

A treatment method and technology of lithium carbonate, applied in water/sewage multi-stage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of large steam consumption and increased lithium loss, and achieve improved recovery. efficiency, increase productivity

Active Publication Date: 2011-11-23
GANFENG LITHIUM CO LTD
View PDF4 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method also consumes a lot of steam, and the part returning to the mine

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
  • Method for processing battery-level lithium carbonate mother liquor
  • Method for processing battery-level lithium carbonate mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0043] Example 1:

[0044] In 1000L mother liquor, adjust the mother liquor to pH=1 with 35% hydrochloric acid, stir for 20min, then adjust to neutral with 1.25mol / L liquid caustic soda NaOH, stir for 20min, and the acidification is completed. Pour the acidified mother liquor into the evaporator and continuously evaporate and feed continuously. When the solid-to-liquid ratio is about 25%, discharge the material and spin water to separate the sodium chloride and lithium chloride solutions and combine the saturated sodium chloride solution Rinse once. Pour lithium chloride solution into the reactor, and then add 0.9mol / L of soda ash solution according to the calculated amount (calculation formula: lithium chloride volume × lithium chloride concentration ÷ 85×106÷230×1.05 (unit: L) ), keep the temperature at 90~95℃ during the feeding process, after the addition, keep the temperature at a constant temperature for 30 minutes and then shake the water. The obtained lithium carbonate p...

Example Embodiment

[0047] Example 2:

[0048] In 1000L mother liquor, adjust the mother liquor to pH=2 with 35% hydrochloric acid, stir for 20min, then adjust to neutral with 1.25mol / L liquid caustic soda NaOH, stir for 20min, and the acidification is completed. Pour the acidified mother liquor into the evaporator and continuously evaporate and feed continuously. When the solid-to-liquid ratio is about 28%, discharge the material and spin water to separate the sodium chloride and lithium chloride solutions, and combine the saturated sodium chloride solution Rinse once. Pour lithium chloride solution into the reaction kettle, and then add 0.9mol / L soda ash solution according to the calculated amount. Keep the temperature at 90~95℃ during the feeding process. After the addition, keep the temperature at the same temperature for 30 minutes and then shake the water. The mother liquor and lotion after the lithium precipitation enter the stage of acidification evaporation and lithium precipitation, and t...

Example Embodiment

[0051] Example 3:

[0052] In 1000L mother liquor, adjust the mother liquor to pH=3 with 35% hydrochloric acid, stir for 20min, then adjust to neutral with 1.25mol / L liquid caustic soda NaOH, stir for 20min, and the acidification is completed. Pour the acidified mother liquor into the evaporator and continuously evaporate and feed continuously. When the solid-to-liquid ratio is about 29%, discharge and spin water to separate the sodium chloride and lithium chloride solutions, and then the saturated sodium chloride solution Rinse once. Pour lithium chloride solution into the reaction kettle, and then add 0.9mol / L soda ash solution according to the calculated amount. During the feeding process, keep the temperature at 90-95°C, keep the temperature for 30 minutes, and then shake the water. The obtained lithium carbonate product is dried and crushed and packaged. The mother liquor and lotion after the lithium precipitation enter the stage of acidification evaporation and lithium pr...

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

The invention discloses a method for processing battery-level lithium carbonate mother liquor. The processing method comprises the following process follow: A. acidizing lithium deposition mother liquid; B. evaporating, condensing and separating out sodium; C. depositing lithium; and D circulating: circularly carrying out steps from A to C on liquid obtained by dewatering in step B and leaching in the step C and the mother liquor subjected to lithium deposition. By the adoption of the method for processing battery-level lithium carbonate mother liquor, which is disclosed by the invention, the quality of lithium chloride can be guaranteed, and lithium recovery rate can be improved greatly on the basis of the formed sealed circulation. In addition, no the industrial three wastes are discharged, therefore the purpose of clean production is achieved.

Description

technical field [0001] The invention relates to a method for treating mother liquor in the lithium industry, in particular to a method for treating battery-grade lithium carbonate mother liquor. Background technique [0002] Lithium carbonate is a basic compound of lithium, which has many industrial uses and is widely used in ceramics, glass, atomic energy, aerospace, military industry and refrigeration, welding, lithium alloys, lithium batteries, controlled nuclear fusion reactors, medicine and other fields. In addition, lithium carbonate, as a basic raw material for lithium, can be converted into various other lithium compounds. [0003] Battery-grade lithium carbonate is mainly used in the production of lithium-ion battery cathode materials such as lithium cobalt oxide, lithium iron phosphate, lithium nickel oxide, lithium manganate or nickel-cobalt lithium manganese oxide. [0004] In the production of lithium carbonate by the traditional sulfuric acid method, the balan...

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
IPC IPC(8): C02F9/10C01D3/04C01D15/08
Inventor 李良彬朱实贵熊训满傅利华李芳芳刘明白有仙
Owner GANFENG LITHIUM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap