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Compound fertilizer anti-caking agent and preparation and use methods thereof

A technology of anti-caking agent and compound fertilizer, which is applied in application, fertilization equipment, fertilizer mixture, etc., can solve the problems of complex adding operation process requirements, high requirements for operators, unfavorable promotion and use, etc., and achieve non-toxic and easy-to-obtain raw materials , easy to use, reduce viscosity effect

Pending Publication Date: 2020-12-15
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are generally problems such as high cost, poor anti-caking effect, complex requirements for adding operation technology, high requirements for operators, and unfavorable promotion and use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023]In this example 1, the components of the compound fertilizer anti-caking agent are taken according to mass fraction: 20 parts of sodium lauryl sulfonate, 30 parts of stearic acid, 40 parts of calcium carbonate, and 10 parts of magnesium stearate; These raw materials are mixed in proportions, heated to 70°C, stirred evenly for 20 minutes, and cooled to room temperature to obtain a paste anti-caking agent product.

[0024]After heating the paste anti-caking agent obtained in Example 1 to 70°C to melt, add it dropwise to the compound fertilizer at 50°C in an amount of 3% by weight to the compound fertilizer, and stir the anti-caking agent quickly and uniformly for 15 minutes Fully wrapped on the surface of compound fertilizer particles.

[0025]200g of the obtained compound fertilizer is sealed in an assembly bag, stacked together and stacked with steel heavy objects to ensure that the ambient temperature is 20-30°C, and the situation is observed every one week.

Embodiment 2

[0027]In Example 2, the components of the compound fertilizer anti-caking agent are taken according to mass fraction: 15 parts of sodium stearate, 25 parts of stearic acid, 45 parts of kaolin, 15 parts of magnesium stearate; After mixing the ratio, heat to 70°C, stir evenly for 20 minutes, and cool to room temperature to obtain a paste-like anti-caking agent product.

[0028]After heating the paste anti-caking agent obtained in Example 2 to 75°C to melt, add it dropwise to the compound fertilizer at 45°C according to the weight ratio of 4% to the compound fertilizer, and stir the anti-caking agent quickly and evenly for 15 minutes. Fully wrapped on the surface of compound fertilizer particles.

[0029]200g of the obtained compound fertilizer is sealed in an assembly bag, stacked together and stacked with steel heavy objects to ensure that the ambient temperature is 20-30°C, and the situation is observed once every week.

Embodiment 3

[0031]In Example 3, the components of the compound fertilizer anti-caking agent were taken according to mass fraction: 20 parts of sodium dodecylbenzene sulfonate, 30 parts of paraffin wax, 40 parts of diatomaceous earth, and 10 parts of talc; The raw materials are mixed in proportions and heated to 70°C, then uniformly stirred for 20 minutes, and cooled to room temperature to obtain a paste-like anti-caking agent product.

[0032]After heating the paste anti-caking agent obtained in Example 3 to 65°C to melt, add it dropwise to the compound fertilizer at 55°C in an amount of 2% by weight to the compound fertilizer, and stir the anti-caking agent quickly and evenly for 15 minutes Fully wrapped on the surface of compound fertilizer particles.

[0033]200g of the obtained compound fertilizer is sealed in an assembly bag, stacked together and stacked with steel heavy objects to ensure that the ambient temperature is 20-30°C, and the situation is observed every one week.

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Abstract

The invention discloses a compound fertilizer anti-caking agent and preparation and use methods thereof. The compound fertilizer anti-caking agent is prepared from, by mass, 15%-20% of surfactant, 25%-30% of thickening time control agent, 30%-50% of hydrophobic agent and 10%-20% of lubricating agent, and the surfactant is at least one of sodium dodecyl sulfate, sodium stearate and sodium dodecyl benzene sulfonate; the thickening time control agent is at least one of stearic acid, paraffin and vegetable oil; the hydrophobic agent is at least one of calcium carbonate, kaolin and diatomite; and the lubricant is at least one of magnesium stearate, talcum powder and silicon dioxide. The preparation method comprises the following steps: heating the compound fertilizer anti-caking agent to 65-75DEG C, melting, dropwisely adding to a compound fertilizer at 45-55 DEG C, quickly and uniformly stirring to sufficiently coat the anti-caking agent on the surfaces of compound fertilizer particles, and cooling to room temperature. The compound fertilizer anti-caking agent is simple in preparation process, convenient to use and convenient for industrial production, the raw materials are non-toxicand easy to obtain, and a paste product obtained after cooling is convenient to store and carry and does not influence dissolution and dispersion.

Description

Technical field[0001]The invention relates to the technical field of compound fertilizer anti-caking treatment technology, and relates to a compound fertilizer anti-caking agent and a preparation and use method thereof.Background technique[0002]Fertilizer agglomeration has always been a problem in the chemical fertilizer industry. Although compound fertilizer has better effects than single fertilizer, it is easier to agglomerate than single fertilizer during transportation and storage. The fluidity of compound fertilizer is greatly reduced, which will make its quality. The corresponding decline will affect the normal application of fertilizers.[0003]The internal factors of fertilizer agglomeration are caused by the formation of crystal bridges between the fertilizer particles due to the presence of moisture, and the dissolution and recrystallization of the fertilizer. External factors such as storage pressure will deform and break the fertilizer particles, increase the particle cont...

Claims

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Application Information

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IPC IPC(8): C05G3/30C05G3/50C05G5/30
CPCC05G3/30C05G3/50C05G5/30C05G5/38
Inventor 张翼付书培
Owner WUHAN INSTITUTE OF TECHNOLOGY
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