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Lithium carbonate washing device

A technology of centrifugal washing and crushing system, which is applied in the direction of lithium carbonate;/acid carbonate, cleaning method using liquid, cleaning method and utensils, etc. It can solve the problem of difficult deep removal, easy agglomeration of lithium carbonate, high cost, etc. problems, to achieve the effect of maintaining quality uniformity and improving purity

Active Publication Date: 2020-03-24
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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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] like 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 filtra...

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 invention relates to a lithium carbonate washing device. The device includes: (1) a filtering, pulp washing and crushing system, which comprises a filtering mechanism, a filtering recovery mechanism, a pulp washing mechanism, a steam filtering mechanism, a crushing mechanism and a conveying mechanism, wherein the filtering mechanism is connected to the pulp washing mechanism, the pulp washingmechanism and the crushing mechanism form a circulation loop, and the pulp washing mechanism is connected to the conveying mechanism; (2) a centrifugal washing system, which comprises a centrifugal washing separation mechanism, a first recycling mechanism and a second recycling mechanism, wherein the centrifugal washing separation mechanism is connected to the first recycling mechanism and the second recycling mechanism respectively, and the conveying mechanism in the filtering, pulp washing and crushing system is connected to the centrifugal washing separation mechanism in the centrifugal washing system. The device provided by the invention remarkably reduces the content of Na<+>, K<+> and other soluble impurities in the materials subjected to conversion and lithium precipitation, so thata lithium carbonate product with higher purity can be prepared.

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 Applications(China)
IPC IPC(8): C01D15/08B08B3/10
CPCB08B3/10C01D15/08
Inventor 李健王洪陈文学高松陈传勋李继伟东宝山王启豪
Owner 青海东台吉乃尔锂资源股份有限公司