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Whole-process nutrient-supply compound fertilizer and preparation method thereof

A compound fertilizer, the whole process technology, applied in fertilizer mixture, fertilization device, application and other directions, can solve the problem of humic acid granulation difficulty and other problems, and achieve the effect of improving nutrient utilization rate, prolonging fertilizer efficiency, and enhancing disease resistance.

Inactive Publication Date: 2015-09-09
天津芦阳肥业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A further object of the present invention is to utilize the viscosity of urea nitrate generated by the reaction of ammonium nitrate and urea to complete the material granulation process, without additionally adding clay that promotes granulation to obtain a better granulation effect, and to solve the problem of adding humic acid in large quantities. Difficult problem

Method used

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  • Whole-process nutrient-supply compound fertilizer and preparation method thereof
  • Whole-process nutrient-supply compound fertilizer and preparation method thereof
  • Whole-process nutrient-supply compound fertilizer and preparation method thereof

Examples

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preparation example Construction

[0029]In the preparation method of the whole-process nutrient-supplying compound fertilizer, in the production of compound fertilizer by granulation method, raw materials containing nitrate nitrogen, ammonium nitrogen, and amide nitrogen are added to the material, in order to prevent excessive Urea nitrate, the gaseous ammonia is directly passed to the material layer of the drum granulator to complete the ammoniation treatment of ammonium nitrate, and granulate with urea and other powdery basic fertilizers containing nitrogen, phosphorus, potassium and organic matter. After drying, cooling, sieving, adding controlled-release urea, and anti-caking treatment, the whole process of nutrient-supplying compound fertilizer is obtained.

[0030] The controlled-release urea is added before wrapping, and a wrapping machine is used to complete the blending process.

[0031] Use granulation tail steam washing water as the liquid phase amount required for granulation.

[0032] The princip...

Embodiment 1

[0037] To prepare high-nitrogen products with nitrogen, phosphorus and potassium content of 25-10-10, take the raw material consumption quota of 1 ton product as an example:

[0038]

[0039] Note: Controlled release urea 1 refers to the controlled release of urea by one layer of membrane, controlled release urea 2 refers to the controlled release of urea by two layers of membrane, and controlled release urea 3 refers to the controlled release of urea by three layers of membrane.

[0040] The specific preparation method: add urea into the mixing tank by metering, the addition amount is 1 ton, add 6 kg of polymer resin, stir for 6 minutes, and pack it to form a layer of film body to control the release of urea. A layer of controlled-release urea that has been stored for more than 24 hours is added to the stirring tank by metering. The amount of addition is 1 ton, and 5 kg of polymer resin is added. After stirring for 7 minutes, it is packaged to make a two-layer controlled-re...

Embodiment 2

[0043] Embodiment 2: prepare nitrogen, phosphorus, potassium content 21-10-15 high-potassium product, take 1 ton of product raw material consumption quota as example:

[0044]

[0045]

[0046] Note: Controlled release urea 1 refers to the controlled release of urea by one layer of membrane, controlled release urea 2 refers to the controlled release of urea by two layers of membrane, and controlled release urea 3 refers to the controlled release of urea by three layers of membrane.

[0047] Specific production process: Add 30 kg of gaseous ammonia (containing N82.3%, mass percentage, the same below) to the material layer of the drum granulator after metering, and add ammonium nitrate phosphorus (containing N30%, Which contains 14.5% nitrate nitrogen, 15.5% ammonium nitrogen, P 2 o 5 6%) 160 kg, urea (containing N46.2%) 117 kg, powdered monoammonium phosphate (containing N11%, P 2 o 5 46%) 198 kg, potassium chloride (contains K 2 O60%) 250 kg, humic acid (containing 6...

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Abstract

The invention discloses a whole-process nutrient supply type composite fertilizer and a preparation method thereof. A raw material containing nitrate nitrogen, ammonium nitrogen, amide nitrogen, controlled release nitrogen and organic matters is added in the material. The components of the whole-process nutrient feeding type composite fertilizer are effectively proportioned in percentage by mass on the basis of nitrogen content: 2-4% of nitrate nitrogen, 5-8% of ammonium nitrogen, 5-8% of amide nitrogen and 6-10% of controlled release nitrogen, the contents of phosphorus and potassium are determined according to different product proportions, and the content of the organic matters is not less than 6%. In the production process, the viscosity of urea nitrate generated in a reaction of ammonium nitrate phosphate and urea and granulation tail gas washing water are used as liquid phase amount necessary for granulation to finish the material granulation process, in order to prevent excessive urea nitrate from being generated in the granulation process, ammonia gas is directly introduced into the material layer of a rotor drum granulator to finish the ammoniation treatment of ammonium nitrate phosphate and control the quantity of the urea nitrate generated in the reaction. The fertilizer not only can improve the utilization rate of fertilizer nutrients and ensure the whole-process nutrient supply of crops so as to increase the yield of the crops and improve the quality, but also can avoid harm caused by escherichia coli and such toxic substances as heavy metal, improve the soil, reduce the soil salinity and fertilize the land.

Description

technical field [0001] The invention belongs to the technical field of chemical fertilizers, and in particular relates to a whole-process nutrient-supplying compound fertilizer and a preparation method thereof. Background technique [0002] At present, with the development of modern agriculture, the development of compound fertilizers at home and abroad has dominated the chemical fertilizer industry. In developed countries of the chemical fertilizer industry, the amount of compound fertilizers has accounted for 70%-80% of the amount of chemical fertilizers. Domestic compound fertilizers The consumption also has a relatively large increase every year. Domestic compound fertilizers are mainly divided into three categories, one is conventional fertilizers, the other is slow (controlled) release fertilizers, and the third is organic fertilizers. [0003] These three types of fertilizers have their own deficiencies. Studies have shown that conventional chemical fertilizers have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/08C05G3/90
Inventor 杨桂双杨金宝李云利杨长东
Owner 天津芦阳肥业股份有限公司
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