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A kind of magnetic nanometer clay and its mechanochemical preparation method and application

A technology of illuminous clay and magnetic nano, which is applied in the field of magnetic nano-immonite and its mechanochemical preparation, and achieves the effects of low preparation cost, simple process and high preparation efficiency

Active Publication Date: 2020-12-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, media-stirred mills are often used to prepare single nanomaterials, such as nano-immonite clay, nano-kaolin, etc., but rarely used media-stirred mills to prepare nanocomposites, especially the use of mechanochemical methods to prepare nano-loaded ferroferric oxide. The main reason is that the media-stirred mill makes the ground particles nanometerized through extrusion, shearing, collision, etc. during the grinding process. Nano-particles have high surface energy and are easy to agglomerate after grinding.

Method used

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  • A kind of magnetic nanometer clay and its mechanochemical preparation method and application
  • A kind of magnetic nanometer clay and its mechanochemical preparation method and application
  • A kind of magnetic nanometer clay and its mechanochemical preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) adding water to dilute the nano-immon clay slurry (Zhongko Nada Co., Ltd.) with a solid content of 40wt.%, and then dispersing it with a high-speed disperser at 1000r / min for 30min to prepare 18wt.% Iommon clay suspension.

[0041] (2) Add ferric oxide powder (Nanjing Epurui Nano Materials Co., Ltd.) to the nano-immon clay suspension prepared in step (1). Wherein, the particle size of the powder of ferric oxide is 0.3 μm, and the mass ratio of ferric oxide and nano-immon clay (dry weight mass) is 1:3, and the solid content of ferric oxide and iron ferric oxide and Mixed slurry of nanoimon clay. Add 1wt.% (based on the total mass of the mixed slurry) of dispersant WF-211 to the mixed slurry, and then continue to disperse for 20 minutes with a high-speed disperser at a speed of 500 r / min.

[0042] (3) The mixed slurry was mechanochemically treated by the sp-1.5L media agitated mill of Shenzhen Sanxing Feirong Machinery Co., Ltd. Adding the yttrium-stabilized zircon...

Embodiment 2

[0046] (1) adding water to dilute the nano-immon clay slurry (China Konada Co., Ltd.) with a solid content of 50wt.%, and then dispersing it with a high-speed disperser at 1200r / min for 40min to prepare 25wt.% Iommon clay suspension.

[0047] (2) Add ferric oxide powder to the nano-immon clay suspension prepared in step (1). Among them, the particle size of the ferroferric oxide powder is 10 μm, the mass ratio of the ferroferric oxide to nano-immonite clay (dry matter mass) is 1:1, and a mixed slurry with a solid content of 50wt.% is prepared. Then, 4.5wt.% (based on the total mass of the mixed slurry) of dispersant WF-211 was added, and the dispersion was continued for 30 minutes in a high-speed disperser at a speed of 1000 r / min.

[0048] (3) The mixed slurry was mechanochemically treated by the sp-1.5L media agitated mill of Shenzhen Sanxing Feirong Machinery Co., Ltd. Yttrium-stabilized zirconia microbeads with a diameter of 0.6 mm were added into the grinding cavity of ...

Embodiment 3

[0052] (1) adding water to dilute the nano-immon clay slurry (Zhongko Nada Co., Ltd.) with a solid content of 35wt.%, and then dispersing it with a high-speed disperser at 500r / min for 20min to prepare 10wt.% Iommon clay suspension.

[0053] (2) Add ferric oxide powder to the nano-immon clay suspension prepared in step (1). Among them, the particle size of ferroferric oxide powder is 1 μm, the mass ratio of ferroferric oxide to nano-immonite clay (dry matter mass) is 1:10, and a mixed slurry with a solid content of 11wt.% is prepared. Then, 0.5wt.% (based on the total mass) of dispersant WF-211 was added, and the dispersion was continued for 10 minutes in a high-speed disperser at a speed of 300 r / min.

[0054] (3) The mixed slurry was mechanochemically treated by the sp-1.5L media agitated mill of Shenzhen Sanxing Feirong Machinery Co., Ltd. Yttrium-stabilized zirconia microbeads with a diameter of 0.2 mm were added into the grinding cavity of the high-energy-density media-...

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Abstract

The invention discloses a magnetic nano-illite-montmorillonite clay, a mechanochemical preparation method and application thereof. The preparation method includes: adding ferriferrous oxide and a dispersant into a nano-illite-montmorillonite clay suspension and performing dispersion to obtain a mixed slurry, conducting mechanochemical treatment on the mixed slurry, and performing washing and drying to obtain ferriferrous oxide loaded magnetic nano-illite-montmorillonite clay. The preparation method provided by the invention has the characteristics of simple process, low cost, high preparationefficiency, and effective reduction of the agglomeration of nano-ferriferrous oxide particles loaded on the nano-illite-montmorillonite clay lamella. The prepared magnetic nano-illite-montmorilloniteclay has superparamagnetism, and can be quickly separated from water after adsorbing pollutants. At the same time, the nano-ferriferrous oxide particles and nano-illite-montmorillonite clay particlesachieve a synergistic effect, thus greatly improving the adsorption performance of the clay on heavy metal ions.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite materials, and in particular relates to a magnetic nanometer clay and its mechanochemical preparation method and application. Background technique [0002] With the rapid development of China's industrialization, leather manufacturing, metallurgy, battery production, electroplating and other industries produce a large amount of wastewater containing heavy metal ions. Heavy metal ions are highly toxic in water, and only trace amounts of heavy metal ions can cause harm to the environment and organisms. In addition, heavy metal ions cannot be degraded, and will accumulate in organisms through the food chain and endanger human health. Taking lead element as an example, lead element is widely used in various industrial production fields, such as paint, coating, battery, smelting, hardware, machinery, electroplating and other industries. Lead element in the human body can damage the nervous syst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/12B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/06B01J20/12B01J20/28009C02F1/281C02F2101/20
Inventor 潘志东黎振源刘婷婷王燕民
Owner SOUTH CHINA UNIV OF TECH