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A method for surface roughening treatment of potassium sulfate salt particles

A particle surface, potassium sulfate technology, applied in chemical instruments and methods, alkali metal sulfite/sulfite, alkali metal sulfite/sulfate preparation form, etc., can solve the problem of large organic solvent consumption and process cost Advanced problems, to achieve the effect of low price, low process cost and easy preparation

Active Publication Date: 2022-03-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In terms of reducing the size of salt particles, patent CN108083298A discloses a method for preparing potassium sulfate by organic solvent precipitation. Although this method can prepare potassium sulfate particles with small particle size or even nanometer size, it needs to consume a large amount of organic solvent and polyacrylic acid. The process cost is too high; and there is no report on the surface roughening of potassium sulfate particles

Method used

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  • A method for surface roughening treatment of potassium sulfate salt particles

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Experimental program
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Effect test

Embodiment 1

[0019] Prepare 100ml of ethylene glycol dispersion of potassium sulfate with a mass fraction of 10%, and stir; add 1ml of polyvinyl alcohol aqueous solution with a mass fraction of 1%, and stir; heat up to 80-100°C, and keep warm for 0.5-2h; Stop stirring, let it stand still or centrifuge to precipitate, and then dry the precipitate; calcinate the dried product at 500°C for 1-4 hours to obtain potassium sulfate with a rough surface.

Embodiment 2

[0021] Prepare 100ml of ethylene glycol dispersion of potassium sulfate with a mass fraction of 1%, and stir; add 1ml of polyvinyl alcohol aqueous solution with a mass fraction of 1%, and stir; heat up to 80-100°C, and keep warm for 0.5-2h; Stop stirring, and after standing or centrifuging, dry the precipitate; calcinate the dried product at 500°C for 2 hours to obtain potassium sulfate with a rough surface.

Embodiment 3

[0023] Prepare 100ml of ethylene glycol dispersion of potassium sulfate with a mass fraction of 20%, and stir; add 1ml of polyvinyl alcohol aqueous solution with a mass fraction of 1%, and stir; heat up to 80-100°C, and keep warm for 0.5-2h; Stop stirring, and after standing or centrifuging, dry the precipitate; calcinate the dried product at 500°C for 2 hours to obtain potassium sulfate with a rough surface.

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Abstract

The invention discloses a method for roughening the surface of potassium sulfate salt particles. First, disperse the potassium sulfate salt powder into an organic solvent at room temperature and stir, add a certain amount of polyvinyl alcohol aqueous solution, raise the temperature to 80-100°C and keep it for 0.5-2h, then stop stirring, dry the precipitate, and finally dry it at 500 Calcining above ℃, potassium sulfate salt powder with particle surface roughening can be obtained.

Description

technical field [0001] The invention relates to a method for preparing granular materials, in particular to a method for roughening the surface of potassium sulfate particles. Background technique [0002] Nanoparticle materials have surface effects, quantum size effects, volume effects and macroscopic quantum tunneling effects, and exhibit good thermal, optical, electrical, magnetic and chemical properties, and have been widely used in high-tech fields such as new materials and traditional industries. widely used. Nanoparticles are prone to particle agglomeration and sintering problems during preparation, such as thermal decomposition methods, chemical precipitation methods, sol-gel methods, spray pyrolysis methods, etc., which cannot avoid contact mass transfer and high-temperature sintering of nanoparticles. Therefore, it is difficult to obtain highly dispersed nanoparticle materials. Our patent CN111320193A discloses a preparation method of metal oxide nanoparticles an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01D5/00B82Y40/00
CPCC01D5/00C01D5/004B82Y40/00
Inventor 董岩张婧逸宁尚超蒋建清
Owner SOUTHEAST UNIV
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