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Fertilizer anti-caking agent and preparation method and application thereof

An anti-caking agent, fertilizer technology, applied in application, fertilizer mixture, layered/coated fertilizer, etc., can solve the problems of powder falling, not wrapping, and powder not being well fixed, etc.

Inactive Publication Date: 2018-03-13
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 3. Problems in the application of anti-caking agent
[0009] Now fertilizer manufacturers generally use the two-step method of oil + powder to wrap fertilizer particles, which can continuously meet the anti-caking effect, and at the same time reduce the cost a lot. At present, the big problem is that the powder cannot be well fixed on the surface of the particles, or It can’t be wrapped, or it is easy to fall off after it is wrapped. We often see the phenomenon of powder falling and de-powdering on the surface of the fertilizer. In this case, the anti-caking and isolation effect of the powder on the fertilizer will be greatly reduced, and the overall anti-caking effect will also have to be reduced. to guarantee

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An anti-caking agent for fertilizers, the substances are calculated by mass percentage, including 10% of hydrogenated tallow amine, 15% of mixed fatty acid, 70% of lubricating oil, and 5% of modified nano-level silicon dioxide. The modified nano-scale silicon dioxide is prepared by modifying the surface of the silane coupling agent KH550, the surface is lipophilic, and the content of silicon dioxide is 99.0%. The D50 particle size of the nano-scale particles is 20nm.

[0025] A method for preparing a fertilizer anti-caking agent: take the 15% mixed fatty acid and add it to a reaction kettle with a stirring device, heat it with steam to 50°C, and add the 5% modified nano-scale silicon dioxide powder during the stirring process , make the hydroxyl group on the surface of the modified nano-scale silica combine with the free fatty acid in the fatty acid, and continue to stir to form a uniform and stable mixture with relatively strong surface activity; take the 70% lubricatin...

Embodiment 2

[0029] An anti-caking agent for fertilizers. The substances are calculated by mass percentage, including 10% of hydrogenated tallow amine, 10% of mixed fatty acid, 75% of soybean oil, and 5% of modified nano-scale silicon dioxide. The modified nano-scale silicon dioxide is prepared by surface modification of the silane coupling agent KH550, the surface has lipophilicity, and the content of silicon dioxide is 99.5%; the primary particle diameter of the nano-scale particle D50 is 150nm.

[0030] A method for preparing a fertilizer anti-caking agent: take the 10% mixed fatty acid and add it to a reaction kettle with a stirring device, heat it with steam to 43°C, and add the 5% modified nano-scale silicon dioxide powder during the stirring process , make the hydroxyl group on the surface of the modified nano-scale silica combine with the free fatty acid in the mixed fatty acid, and continue to stir to form a uniform and stable mixture with relatively strong surface activity; take t...

Embodiment 3

[0034] An anti-caking agent for fertilizers. The substances are calculated by mass percentage, including 10% of hydrogenated tallow amine, 20% of mixed fatty acid, 60% of sheep oil, and 10% of modified nano-level silicon dioxide. The modified nano-scale silicon dioxide is prepared by modifying the surface of the silane coupling agent KH550, the surface is lipophilic, and the content of silicon dioxide is 99.3%. The D50 particle size of the nano-scale particles is 50nm.

[0035] A method for preparing a fertilizer anti-caking agent: take the 20% mixed fatty acid and add it to a reaction kettle with a stirring device, heat it with steam to 40°C, and add the 10% modified nano-scale silicon dioxide powder during the stirring process , the hydroxyl group on the surface of the modified nano-scale silica is combined with the free fatty acid in the mixed fatty acid, and the mixture is continuously stirred to form a uniform and stable mixture with relatively strong surface activity; the...

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Abstract

The invention discloses a fertilizer anti-caking agent and a preparation method and application thereof. The anti-caking agent is characterized by comprising the following components in percentages bymass: 10-20% of hydrogenated tallow amine, 10-20% of C8-C20 fatty acid and fat of the fatty acid, 50-75% of base oil and 5-10% of modified nano silicon dioxide; and the sum of mass percentages of thecomponents is 100%. The fertilizer anti-caking agent is obtained by two-time compounding and ageing. When used, the product uniformly coats the surfaces of fertilizer particles in a high-pressure spraying mode. By the fertilizer anti-caking agent, a film can be formed on the surfaces of the fertilizer particles, a fertilizer can be unconsolidated for a long time and has good mobility, and the quality of the fertilizer is ensured.

Description

technical field [0001] The invention relates to the technical field of fertilizer anti-caking treatment, in particular to a fertilizer anti-caking agent and its preparation method and application. technical background [0002] 1. Overview of anti-caking agent [0003] Anti-caking agents are additives that promote good fluidity of fertilizers during storage and handling operations. In order to prevent fertilizer agglomeration, fertilizer manufacturers mainly adopt the method of fertilizer coating anti-caking agent while improving process conditions and controlling particle characteristics. The use of anti-caking agent can minimize fertilizer agglomeration, moisture absorption and Pulverization phenomenon increases the fluidity of particles and facilitates the storage, transportation and use of fertilizers. Therefore, as a low-cost, high-yield anti-caking measure, anti-caking agents have now been widely used by compound fertilizer manufacturers all over the world. Accept and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05G3/20C05G5/30
Inventor 杨慧萍王仁宗田楠李淑华
Owner HUBEI FORBON TECH
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