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Method for reducing aluminum impurities in lithium iron phosphate

A lithium iron phosphate and impurity technology, applied in chemical instruments and methods, solid separation, grids, etc., can solve the problems that aluminum is difficult to sieve, inconvenient to recycle, and reduce the effect of sieving, so as to prevent aluminum from clogging the filter holes , improve the filtering effect, improve the filtering effect

Pending Publication Date: 2022-05-31
安徽南都华铂新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When decomposing and recycling lithium iron phosphate batteries, the impurities of aluminum inside are not easy to recycle. Due to the low hardness and good ductility of aluminum, the pyrolysis powder obtained by crushing and pyrolyzing waste lithium iron phosphate positive electrodes is selectively pulverized , the cathode material is crushed and sieved, and aluminum is not easy to sieve, which reduces the effect of sieving and is not easy to recycle

Method used

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  • Method for reducing aluminum impurities in lithium iron phosphate
  • Method for reducing aluminum impurities in lithium iron phosphate
  • Method for reducing aluminum impurities in lithium iron phosphate

Examples

Experimental program
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Effect test

Embodiment 1

[0035] like Figure 1-6 As shown, a method for reducing aluminum impurities in lithium iron phosphate proposed by the present invention includes an outer body 1, an inner plate 2 is arranged inside the outer body 1, and a groove 21 is opened in the inner plate 2 near the right position, The interior of the groove 21 is fixedly connected with a clamping column 22 near the lower end position, and the filtering mechanism 7 can be installed and fixed by the clamping column 22, and the outer surface of the upper end of the clamping column 22 is provided with the filtering mechanism 7;

[0036]The filter mechanism 7 includes a filter plate 71, a first card plate 72, a second card plate 73, a card slot 74, a second spring 75, a U-shaped rod 76, a sliding member 77 and a sliding groove 78. The number of filter plates 71 is three , and the filtration aperture of the upper filter plate 71 is larger than the aperture of the middle filter plate 71, and the aperture of the lower filter pla...

Embodiment 2

[0041] like Figure 1-8 As shown, the outer surface of the upper end of the filter plate 71 is provided with a rotating groove 8 near the middle position, and the inner part of the rotating groove 8 is embedded with a bearing 9 near the lower end position. A rotating member 10 is embedded in the bearing 9;

[0042] The rotating member 10 has an inverted T-shaped structure. The rotating member 10 using the T-shaped structure can move up and down with the inside of the bearing 9 and the rotating groove 8 without falling out of the rotating groove 8. The left outer surface of the rotating member 10 is close to A scraper 11 is fixedly connected at the upper end, and a grate block 12 is fixedly connected to the outer surface of the front end of the scraper 11 near the lower end. It can effectively clean the impurities such as aluminum bars, improve the filtering effect, and prevent the filter holes from being blocked.

[0043] During operation, due to the long-term use of the fil...

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PUM

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Abstract

The invention relates to a method for reducing aluminum impurities in lithium iron phosphate, the method comprises an outer body, the outer body is internally provided with an inner plate, the device is provided with a filtering mechanism, aluminum in waste lithium iron phosphate is firstly filtered by using a first layer of filtering plate, and larger aluminum can be effectively filtered; the waste lithium iron phosphate is filtered on the first-layer filter plate and then filtered on the second-layer filter plate again, so that aluminum in the waste lithium iron phosphate filtered from the upper end can be filtered for the second time, the aluminum filtering effect can be effectively improved, small aluminum can be effectively filtered finally through the third-layer filter plate, the filtering effect is improved, and the service life of the waste lithium iron phosphate is prolonged. And when the filter plate needs to be cleaned, the scraper blade can be driven to clean the filter plate by rotating the rotating groove and the rotating piece in the bearing, and larger aluminum can be effectively cleaned through the grate blocks fixed on the scraper blade at equal intervals, so that the filtering effect is improved, and the aluminum is prevented from blocking the filter holes.

Description

technical field [0001] The invention relates to the field of reducing aluminum impurities in lithium iron phosphate, in particular to a method for reducing aluminum impurities in lithium iron phosphate. Background technique [0002] Because lithium iron phosphate power batteries have the advantages of long cycle life and good safety performance, they have been widely used in various electric vehicles and energy storage fields in recent years, especially driven by new energy vehicles and energy storage lithium batteries in recent years. Lithium sales have grown significantly, and behind the mass production means that a large number of discarded lithium iron phosphate batteries are produced every year. The new energy vehicle industry will still be in a stage of rapid development at present and in the next 3 to 5 years. It is estimated that the scrapped lithium battery will reach 500,000 tons by 2020 and 1.16 million tons by 2023. According to the installed capacity of lithium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B1/28B07B1/42B07B1/52
CPCB07B1/28B07B1/42B07B1/528Y02E60/10
Inventor 吴国庆朱建楠
Owner 安徽南都华铂新材料科技有限公司