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A device for washing lithium carbonate

A technology of centrifugal washing and pulverizing system, applied in lithium carbonate;/acid carbonate, cleaning method using liquid, separation method, etc. Deep removal and other issues

Active Publication Date: 2021-09-10
青海东台吉乃尔锂资源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the characteristics of lithium carbonate itself, which is easy to agglomerate and stick together, some impurities are wrapped and adhered to the material, making it difficult to remove deeply. The production technology of battery-grade lithium carbonate is relatively difficult and expensive.

Method used

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  • A device for washing lithium carbonate
  • A device for washing lithium carbonate
  • A device for washing lithium carbonate

Examples

Experimental program
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Effect test

no. 1 approach

[0053] figure 1 A device for washing lithium carbonate according to an embodiment of the present invention is shown, which includes a filter slurry washing and crushing system 100 and a centrifugal washing and separation system 200 .

[0054] (2.1) Filtration pulp washing and crushing system 100

[0055] Such as figure 1 As shown, the filter pulp washing and crushing system 100 includes a filter mechanism 101 , a filter recovery mechanism 102 , a starch washing mechanism 103 , a steam filter mechanism 104 , a crushing mechanism 105 and a conveying mechanism 106 .

[0056] The filter mechanism 101 may mainly include a plate and frame filter press. It is used in the first stage of pulp washing to separate the lithium carbonate slurry generated in the conversion lithium precipitation section from solid to liquid to obtain a filter cake and filtrate containing impurities, wherein the filter cake enters the pulp washing mechanism 103 of this stage, and the impurity-containing fil...

no. 2 approach

[0074] figure 2 A device for washing lithium carbonate according to another embodiment of the present invention is shown, which includes three filter pulp washing and crushing systems 100 and two centrifugal washing and separation systems 200 .

[0075] exist figure 2 Among them, the pulp washing and crushing system of the second and third stages is the same as the pulp washing and crushing system of the first stage, and the technological process adopted is also the same. The same treatment (filtering, pulp washing, crushing) in the first-stage filter pulp washing and crushing system realizes three-stage filter pulp washing and crushing. After finishing the three-stage filtration, pulp washing and pulverization, the slurry is transported to the following centrifugal washing and separation system 200 by the conveying mechanism in the third-stage system.

[0076] exist figure 2 Among them, two centrifugal washing and separating systems 200 are used, and the two centrifugal...

Embodiment

[0111] Hereinafter, the present invention will be described in detail with reference to Examples to specifically describe the present invention. However, the embodiments of the present invention may be modified into various other forms and the scope of the present invention should not be construed as being limited to the embodiments described below. The embodiments of the present invention are provided so as to more fully describe the present invention to those skilled in the art.

[0112] Unless otherwise specified, the equipment or raw materials in the following examples can be obtained from commercial channels such as general markets or can be easily obtained by self-made.

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Abstract

The present invention relates to the device of washing lithium carbonate, and described device comprises: (1) filter pulp washing pulverizing system, it comprises filter mechanism, filter recovery mechanism, starch washing mechanism, steam filter mechanism, crushing mechanism, conveying mechanism, wherein said filter mechanism is connected To the pulp washing mechanism, the pulp washing mechanism and the crushing mechanism form a circulation loop, and the pulp washing mechanism is connected to the conveying mechanism; (2) centrifugal washing system, which includes a centrifugal washing separation mechanism, a first recovery mechanism and a second A recycling mechanism, wherein the centrifugal washing and separating mechanism is respectively connected to the first recycling mechanism and the second recycling mechanism, wherein the conveying mechanism in the filter slurry washing and crushing system is connected to the centrifugal washing and separating mechanism in the centrifugal washing system . The device of the present invention significantly reduces the Na in the material after the conversion of lithium precipitation + 、K + Wait for the content of soluble impurities, thereby making the lithium carbonate product with higher purity.

Description

technical field [0001] The invention relates to the production of lithium carbonate, in particular to a device for washing lithium carbonate. Background technique [0002] Lithium carbonate (Li 2 CO 3 ), is currently one of the main raw materials for lithium-ion batteries. Under the background of the vigorous development of new energy technology and becoming the mainstream power source, lithium carbonate plays a pivotal role in the entire new energy industry chain. There is a huge demand for lithium carbonate worldwide, especially battery-grade lithium carbonate (lithium carbonate content ≥ 99.5%). At the same time, the quality requirements are becoming increasingly stringent, and the content of related impurities must be strictly controlled within the scope specified in the standard. [0003] However, due to the characteristics of lithium carbonate itself, which is easy to agglomerate and stick, some impurities are wrapped and adhered to the material, making it difficult ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D36/00
CPCB08B3/10C01D15/08
Inventor 李健王洪陈文学高松陈传勋李吉伟东宝山王启豪
Owner 青海东台吉乃尔锂资源股份有限公司