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Method for producing granular potassium chloride

A production method and technology of potassium chloride, applied in the field of production method of granular potassium chloride, can solve problems such as nutrient distribution ratio limitation, and achieve the effects of low production cost, high content of potassium oxide, and convenient operation

Inactive Publication Date: 2012-09-26
HENAN LEEF FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Granular potassium chloride with lower nutrients, as a raw material for blended fertilizers, is often limited by the ratio of nutrients

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT: The process of the present invention is described through the following examples. However, the examples do not limit the invention.

example 1

[0021] Preparation of binder: Add 110 parts of acrylic emulsion with a solid content of 53% into a container with a stirring device, start stirring, add 50 parts of water, stir evenly, then add 4 parts of benzyl alcohol and 3 parts of ethylene glycol in sequence , 1 part of sodium benzoate, 8 parts of polyvinyl butyral. Stir evenly to obtain the binder.

[0022] This example is batch production. Add 1,000 kg of white powdery potassium chloride with a fineness of less than 60 mesh and a potassium oxide content of 57% into the disc granulator, spray 20 kg of the above-mentioned prepared binder, and rotate in the disc granulator Pellet into balls. After drying, cooling and sieving, 930 kilograms of granular potassium chloride products were obtained, and the content of potassium oxide in this product was 54.5%.

example 2

[0024] Preparation of binder: Add 130 parts of acrylic emulsion with a solid content of 53% into a container with a stirring device, start stirring, add 40 parts of water, stir well, then add 5 parts of benzyl alcohol and 4 parts of ethylene glycol in sequence , 1.5 parts of sodium benzoate, and 9 parts of polyvinyl butyral. Stir evenly to obtain the binder.

[0025] This example is for continuous production. The red powdery potassium chloride that is pulverized and less than 60 mesh potassium oxide content is 60% is added in the drum granulator at 3000 kg / hour, sprayed into the above-mentioned prepared binder at 100 kg / hour, Granulate into balls in a drum granulator. After drying, cooling and sieving, the granular potassium chloride product with a particle size of 1-4.75 mm is obtained. Particles with a particle size greater than 4.75 mm are crushed and returned to the drum granulator, and particles with a particle size of less than 1 mm are directly returned to the granul...

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Abstract

The invention relates to a method for producing granular potassium chloride and belongs to the technical field of manufacture of fertilizers. The method comprises the specific steps of preparation of a binder and pelleting of powdered potassium chloride; adding polyacrylic emulsion, whose solid content is 53%, in water in a container to uniformly agitate the polyacrylic emulsion and water, then sequentially adding benzyl alcohol, ethylene glycol, sodium benzoate and polyvinyl butyral in proportions, and fully and uniformly agitating the mixture. The process may be batch production or continuous production. If the process is batch production, the powdered potassium chloride is added to a disk pelletizer, and the binder is sprayed into rotary materials in proportion and pelletized into balls. The product is prepared by drying, cooling and sieving. If the process is continuous production, the powdered potassium chloride is added to a disk or rotary drum granulator; the binder is continuously sprayed into the rotary material in proportion and pelletized into balls, and the product is prepared by drying, cooling and sieving. The product is round and intact in particles, smooth in surface and high in strength. The product can be used as a bulk-blended fertilizer material. The top potassium oxide content of the product can be up to 59.5%.

Description

technical field [0001] The invention relates to a production method of granular potassium chloride, which belongs to the technical field of fertilizer manufacture, and specifically relates to a technical method for producing granular potassium chloride by using powdery potassium chloride as a raw material. Background technique [0002] Potassium chloride is the main variety of potassium fertilizer, and the vast majority of potassium fertilizers in my country use potassium chloride as a potassium source. There are two main types of potassium chloride: one is the potassium fertilizer mined from solid mines, containing 60% potassium oxide, usually red, commonly known as red potassium, and has low water content; the other is extracted from brine containing brine Potassium fertilizer is white, commonly known as white potassium, its potassium oxide content is about 54% to 60%, and usually has a high water content. [0003] White potassium and red potassium are generally in the fo...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05D1/02
Inventor 万亚珍张文辉谷守玉
Owner HENAN LEEF FERTILIZER
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