Method for preparing battery grade lithium carbonate by recovering lithium from lithium iron phosphate waste battery

A technology for lithium ferrous phosphate and waste batteries, applied in battery recycling, waste collector recycling, lithium carbonate;/acid carbonate, etc., can solve the problems of low lithium yield, low product purity, and product impurity content Advanced problems, to achieve the effect of improving lithium recovery rate, high product purity, and high lithium recovery rate
CN106785166AActive Publication Date: 2017-05-31GANFENG LITHIUM CO LTD
8 Cites 22 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GANFENG LITHIUM CO LTD
Publication Date
2017-05-31

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for preparing battery grade lithium carbonate by recovering lithium from a lithium iron phosphate waste battery. The lithium iron phosphate waste battery is taken as a raw material to prepare the battery grade lithium carbonate. The method comprises the following steps: (1) carrying out battery disassembling; (2) carrying out disk granulation; (3) carrying out high-temperature roasting; (4) carrying out acidification leaching; (5) carrying out deep transition; (6) carrying out alkalization edulcoration; (7) carrying out lithium deposition by sodium carbonate. The method has the beneficial effects that the method for preparing the battery grade lithium carbonate by recovering the lithium from the lithium iron phosphate waste battery has the advantages of high recovery rate, environment friendliness, high product purity and the like, the main content of a product exceeds 99.5%, and meets battery grade product requirements, and the method has the characteristics of simple technology and low production cost and is suitable for industrial production.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for recycling lithium waste batteries, in particular to a method for recovering lithium from lithium ferrous phosphate waste batteries to prepare battery-grade lithium carbonate. Background technique

[0002] Due to the advantages of high specific energy, long service life, high rated voltage, high power endurance, low self-discharge rate, light weight, and high and low temperature adaptability, lithium-ion batteries have become a popular choice for digital, communication, aviation, and portable electronic products. preferred power source. With its popularization and application in power vehicles and high-power energy storage facilities, its demand will grow explosively. In 2015, the global lithium-ion battery production reached 100.75GWh, of which small batteries accounted for 66.28%, power batteries accounted for 28.26%, and energy storage batteries accounted for 5.46%. In 2015, my country's lithium-ion battery pro...

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