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Lithium adsorbent and preparation method of lithium adsorbent

A lithium adsorption and binder technology, which is applied in the field of lithium technology, can solve the problems of numerous equipment, complex preparation process, and high cost of lithium adsorbent preparation, and achieve the effects of strong activation performance, simple preparation process, and suitable for large-scale production

Active Publication Date: 2017-07-25
ЦИНХАЙ СОЛТ ЛЕЙК ИНДАСТРИ ГРУП КО ЛТД
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of lithium adsorbent, which is used to solve the problems of high preparation cost, complicated preparation process and numerous equipments of existing lithium adsorbent

Method used

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preparation example Construction

[0030] This embodiment provides a preparation method of a lithium adsorbent and a lithium adsorbent, the preparation method comprising the following steps:

[0031] Step S1: adding the aluminum chloride solution and the lithium compound into the preparation tank, so that the aluminum chloride solution and the lithium compound are fully mixed, wherein the ratio of the amount of the aluminum element in the aluminum chloride to the lithium element in the lithium compound is 1.8 to 2.2 : 1, forming a reaction precursor, preferably, the ratio of the amount of aluminum and lithium in the reaction precursor is 2.0: 1, wherein the lithium compound is one of lithium hydroxide, lithium carbonate and lithium chloride .

[0032] In this embodiment, lithium hydroxide can be used as a raw material, but compared with the traditional preparation method using lithium hydroxide as a raw material, the amount of lithium hydroxide used is less, so the use cost of the lithium adsorbent is lower.

...

Embodiment 1

[0049] This embodiment prepares lithium adsorbent according to the following steps:

[0050] Step S1: Add 8 L of AlCl with a concentration of 150 g / L to the preparation tank 3 Solution and 2L of LiOH solution with a concentration of 60g / L were stirred and mixed thoroughly to form a reaction precursor.

[0051] Step S2: Transfer the reaction precursor to the reactor, and continue to add 9L of NaOH solution with a concentration of 100g / L to the reactor, so that the reaction precursor and the NaOH solution fully react, and form the first product in the reactor.

[0052] Step S3: The first product is transported to a plate and frame filter press, and the solid phase substance in the first product is extracted through washing and pressing. The water content in the solid phase substance is 39%, and the salt content is reduced to 1%. Then the solid phase material is transported to the flash dryer through a belt conveyor, and the drying temperature is set at 60°C, so that the moistur...

Embodiment 2

[0058] This embodiment prepares lithium adsorbent according to the following steps:

[0059] Step S1: Add 8 L of AlCl with a concentration of 150 g / L to the preparation tank 3 Solution and 1.8 L of LiOH solution with a concentration of 60 g / L were stirred and mixed thoroughly to form a reaction precursor.

[0060] Step S2: Transfer the reaction precursor to the reactor, and continue to add 9L of NaOH solution with a concentration of 100g / L to the reactor, so that the reaction precursor and the NaOH solution fully react, and form the first product in the reactor.

[0061] Step S3: The first product is transported to a plate and frame filter press, and the solid phase substance in the first product is extracted through washing and pressing. The water content in the solid phase substance is 37%, and the salt content is reduced to 1%. Then the solid phase material is transported to the flash dryer through a belt conveyor, and the drying temperature is set at 60°C, so that the moi...

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Abstract

The invention discloses a lithium adsorbent and a preparation method of the lithium adsorbent. The preparation method comprises the following steps: step S1: sufficiently mixing an aluminum chloride solution with the lithium compound to form a reaction preliminary body, wherein the amount of substance of the aluminum chloride to the lithium compound is (1.8 to 2.2) to 1, and the lithium compound is one of the lithium hydroxide, lithium carbonate and lithium chloride; step S2: adding a sodium hydroxide solution in the reaction preliminary body, wherein the amount of the substance of the sodium hydroxide to the aluminum chloride is (2.5 to 3.5) to 1; reacting to generate LiCl.2.2-2.8Al(OH)3.2.7-3.9H2O so as to form a first product; step S3, performing solid-liquid separation, drying, grinding and smashing on the first product to form a second product; step S4, adding adhesive and the liquid chlorine in the second product to realize mixing granulation, thereby forming a third product; and step S5, crushing and sieving the third product to obtain the lithium adsorbent. The preparation process of the lithium adsorbent is simple and efficient, the prepared lithium adsorbent is excellent in property, and the raw material has great selectivity, so that the preparation cost of the lithium adsorbent is effectively saved.

Description

technical field [0001] The invention relates to the technical field of lithium technology, in particular to a preparation method of a lithium adsorbent and the lithium adsorbent. Background technique [0002] Lithium metal is widely used in rechargeable batteries, glass, ceramics, alloys, lubricants, medicine and other fields, especially rechargeable lithium batteries have received extensive attention as the main power source of hybrid and electric vehicles in recent years. In addition, there is a huge market for using lithium in existing small batteries such as mobile phones and notebook computers. As a result, lithium metal is in high demand both domestically and abroad across the industrial spectrum. The only current industrial method for producing lithium metal is lithium chloride molten salt electrolysis. Therefore, in order to meet the market demand for metallic lithium, it is necessary to greatly increase the production of lithium chloride. Lithium chloride is a ki...

Claims

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Application Information

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IPC IPC(8): B01J20/04B01J20/28B01J20/30C22B26/12
CPCB01J20/0248B01J20/046B01J20/28016B01J20/28059C22B26/12
Inventor 何永平严雄仲王文海邢红金生军王世娇张荣子毛新宇陈彩霞张贵成
Owner ЦИНХАЙ СОЛТ ЛЕЙК ИНДАСТРИ ГРУП КО ЛТД
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