Preparation method of coated controlled-release fertilizer and coating equipment thereof

A technology of controlled-release fertilizers and coatings, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve problems such as limited resource utilization and environmental impact, and achieve the effects of reducing soaking time, reducing waste, and saving production processes

Active Publication Date: 2013-04-03
山东良永环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has limited ability to improve resource utilization and will have a certain impact on the environment

Method used

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  • Preparation method of coated controlled-release fertilizer and coating equipment thereof
  • Preparation method of coated controlled-release fertilizer and coating equipment thereof
  • Preparation method of coated controlled-release fertilizer and coating equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] The coated fertilizer of the present invention includes fertilizer and its outer coating, wherein the fertilizer can be nitrogen fertilizer, phosphorus fertilizer, potash fertilizer or compound fertilizer, as long as it is round granular and the hardness of the fertilizer meets the requirements of the industry standard, coating can be carried out; The coating material adopts sulfur added with a regulator, so that the thickness of the coating is uniform, dense, complete, and free of cracks, which improves the strength of the coating and reduces the amount of coating material. It can not only ensure the slow release of nutrients in the early stage of the fertilizer, but also It can achieve the release of nutrients during the calibration period, effectively realize the controlled release of nutrients, and reduce the pollution to the envir...

Embodiment 2

[0059] The technological process of producing film-coated fertilizers, including:

[0060] Step 1: The sulfur is transported and measured by the sulfur conveying and measuring equipment 7, and added to the sulfur melting kettle 5, and heated and melted to form sulfur liquid.

[0061] Step 2: The regulator is transported and metered through the regulator conveying and metering device 8, and added to the sulfur melting kettle 5. The weight ratio of sulfur and regulator is: 100:18.

[0062] Step 3: keep heating, control the temperature in the sulfur melting kettle 5 within the range of 155°C to 180°C, and keep stirring to form a uniform liquid to form a coating liquid.

[0063] Step 4: Add the high-temperature coating liquid continuously into the sulfur-impregnated centrifugal coating machine 6 .

[0064] Step 5: Transport and measure the fertilizer granules at room temperature through the fertilizer granule conveying and metering device 9 , continuously add them to the sulfur-...

Embodiment 3

[0070] The technological process of producing film-coated fertilizers, including:

[0071] Step 1: The sulfur is transported and measured by the sulfur conveying and measuring equipment 7, and added to the sulfur melting kettle 5, and heated and melted to form sulfur liquid.

[0072] Step 2: The regulator is transported and metered through the regulator conveying and metering device 8, and added to the sulfur melting kettle 5. The weight ratio of sulfur and regulator is: 100:30.

[0073] Step 3: keep heating, control the temperature in the sulfur melting kettle 5 in the range of 120°C to 180°C, and keep stirring to form a uniform liquid to form a coating liquid.

[0074] Step 4: Add the high-temperature coating liquid continuously into the sulfur-impregnated centrifugal coating machine 6 .

[0075] Step 5: The fertilizer granules at room temperature are conveyed and measured by the fertilizer granule conveying and metering device 9, continuously added to the sulfur-impregnat...

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Abstract

The invention discloses a preparation method of a coated controlled-release fertilizer and coating equipment thereof, which belong to the field of fertilizers and preparation of fertilizers, in particular to a preparation method and equipment of a fertilizer. The method is characterized in that: fertilizer particles are soaked into coating liquid for coating, wherein the temperature of the coating liquid is higher than that of the fertilizer particles. By adopting a soaking type coating method, the fertilizer particles are instantaneously coated by the coating liquid under the action of adsorption force produced by the temperature difference between the coating liquid and the fertilizer particles, so that an entire shell is formed by quick cooling, and coating is completed. The nutrient content of a coated finished product can be increased, the using amount of a coating material is reduced, and high coating intensity is achieved.

Description

technical field [0001] The invention belongs to the field of fertilizers and their manufacture, and in particular relates to a method for preparing fertilizers and equipment thereof. Background technique [0002] At present, there are hundreds of thousands of fertilizers sold as commercial products in the market, and the output and consumption are huge. With the continuous increase of fertilizer consumption in the world, the fertilizer utilization rate has not been significantly improved, which has caused serious waste of resources and environmental pollution. With the improvement of production level and the growth of people's knowledge level, people have a new understanding of the application of fertilizers, reducing production costs and protecting soil has become the goal pursued by people, and the development of environmentally friendly fertilizers with high efficiency has become a consensus among people. Its main technical route is to realize the slow and controlled rel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
Inventor 刘恒永
Owner 山东良永环保科技有限公司
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