Surface roughening treatment method forpotassium sulfate particle

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

Active Publication Date: 2021-09-14
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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  • Surface roughening treatment method forpotassium sulfate particle

Examples

Experimental program
Comparison scheme
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 surface roughening treatment method for potassium sulfate particles. The method comprises the following steps: dispersing potassium sulfate salt powder into an organic solvent at room temperature, stirring, adding a certain amount of a polyvinyl alcohol aqueous solution, heating to 80-100 DEG C, keeping the temperature for 0.5-2 hours, stopping stirring, drying a precipitate, and finally calcining at 500 DEG C or above to obtain the potassium sulfate salt powder with roughened particle surfaces.

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 Applications(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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