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Load type lithium adsorbent and preparation method thereof

A lithium adsorption and loading technology, applied in the field of loaded lithium adsorbent and its preparation, can solve the problems of decreased adsorption performance, low mechanical strength of the adsorbent, poor water permeability of the adsorbent, etc., and achieves the effect of high adsorption capacity

Active Publication Date: 2019-01-04
BYD CO LTD
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Problems solved by technology

[0003] The main problems of the physical method are the low mechanical strength of the adsorbent and the poor water permeability of the adsorbent, which lead to a sharp drop in the adsorption capacity; although the adsorbent prepared by the chemical method has a high mechanical strength, the consistency of the process is poor, and there is also adsorption after granulation. Significant drop in performance

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  • Load type lithium adsorbent and preparation method thereof
  • Load type lithium adsorbent and preparation method thereof
  • Load type lithium adsorbent and preparation method thereof

Examples

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preparation example Construction

[0024] According to the present invention, the lithium adsorbent powder can be various conventional lithium adsorbent powder materials of the present invention, such as aluminum salt lithium adsorbent, lithium titanium oxide lithium adsorbent and lithium manganese oxide lithium adsorbent. one or more of the agents. The lithium adsorbent powder can be commercially available, or can be prepared by conventional methods in the art. Wherein, taking the preparation of the aluminum salt lithium adsorbent as an example, the preparation method of the aluminum salt lithium adsorbent comprises: aluminum hydroxide and lithium hydroxide (the amount of which makes the molar ratio of Al and Li be 1.8-2.2:1) Mix (for example, use a high-speed mixer for 20-40min), then heat in an air atmosphere (for example, heat at 180-220°C for 2-4h), and then add water (the amount of water is such that the weight ratio of water to powder is 2 -5:1) for mixing, the resulting mixture is subjected to aging tr...

preparation example 1

[0045] This preparation example is used to illustrate the preparation of lithium adsorbent powder.

[0046] (1) Mix aluminum hydroxide and lithium hydroxide monohydrate (in such an amount that the molar ratio of Al and Li is 2:1) in a high-speed mixer for 30 minutes; and heat the resulting mixture in air at 200°C for 3 hours;

[0047] (2) Add the powder obtained in step (1) into an appropriate amount of deionized water (the weight ratio of water to powder is 3:1), stir evenly, age at 70°C for 3 hours, add hydrochloric acid to adjust the upper layer after cooling Water phase to pH 5.3;

[0048] (3) Separate and dry the powder.

Embodiment 1

[0050] This example is used to illustrate the supported lithium adsorbent of the present invention and its preparation method.

[0051] (1) Bisphenol A type epoxy resin E-51 (purchased from Guangzhou Aichuan Chemical Co., Ltd., the consumption in dry weight is 10 parts by weight), epoxy curing agent (purchased from Jiangmen City Good Chemical Co., Ltd. GG-6689 brand, the consumption in terms of dry weight is 5 parts by weight), acetone (consumption is 10 parts by weight) and the aluminum salt lithium adsorbent powder (consumption is 75 parts by weight) of Preparation Example 1 gained are stirred and mixed to obtain Liquid;

[0052] (2) Add the hollow polyhedral ball filler into the feed liquid (the volume ratio of the total volume of the hollow polyhedral ball filler to the feed liquid is 1:1.5), and stir evenly;

[0053] (3) Put the hollow polyhedral spherical filler body loaded with the material liquid into an oven and heat and solidify at 100° C. for 1 hour to obtain the l...

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Abstract

The invention relates to the field of lithium adsorbents, in particular to a load type lithium adsorbent and a preparation method thereof. The load type lithium adsorbent comprises a supporting body and a porous micro structure formed in a hole of the supporting body and formed by curing lithium adsorbent powder and an adhesive. The load type lithium adsorbent has the high adsorption capacity, adsorption selectivity and strength.

Description

technical field [0001] The invention relates to the field of lithium adsorbents, in particular to a loaded lithium adsorbent and a preparation method thereof. Background technique [0002] Through the preparation of inorganic adsorbents, adhesives are added to the precursors of inorganic adsorbents for granulation. The granulation methods mainly include physical methods and chemical methods. Among them, the physical method mainly uses PVC as an adhesive for extrusion granulation, and the extrusion process does not involve chemical reactions; the chemical method mainly adds adhesive to the inorganic adsorbent precursor to form a two-phase interface for suspension granulation. Heat is then applied to cure the adhesive. [0003] The problems existing in the physical method are mainly the low mechanical strength of the adsorbent and the poor water permeability of the adsorbent, which lead to a sharp drop in the adsorption capacity; although the adsorbent prepared by the chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/28
CPCB01J20/28097B01J20/3042B01J20/3078
Inventor 段敏陈靖华高东徐茶清郭增艳
Owner BYD CO LTD
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