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A kind of solid blended fertilizer containing coated synergistic urea and ammonium nitrate phosphorus and preparation method thereof

A technology of ammonium nitrate and coating material, which is applied in the direction of solid/semi-solid fertilizer, ammonium orthophosphate fertilizer, layered/coated fertilizer, etc. Pollution and other issues, to achieve the effect of improving the utilization rate of nitrogen fertilizer, avoiding direct contact, and prolonging the fertilizer effect period

Active Publication Date: 2022-04-22
KINGENTA ECOLOGICAL ENG GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of this method is high, organic solvents are required in the production process, and the coating material will not be used by crops, and it is difficult to degrade in the soil, causing environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A solid blended fertilizer containing coated synergistic urea and ammonium nitrate, using coated synergistic urea, ammonium nitrate and water-absorbing agent as raw materials; the quality of the coated synergistic urea, ammonium nitrate and water-absorbing agent The ratio is 19:19:2.

[0034] The coated synergistic urea is composed of 94.8% urea, 1.2% binder, 3.8% coating material, and 0.2% synergist by mass percentage; wherein urea is a solid particle with a diameter of 3mm, and the binder is 60% phosphoric acid Solution, the coating material is magnesium oxide, and the synergist is a combination of diethylaminoethanol ester: n-butylthiophosphoric triamide: 3,4 dimethylpyrazole phosphate = 1:1.5:1.5 by mass .

[0035] The ammonium nitrate is a solid particle with a diameter of 3mm;

[0036] The water-absorbing agent is a combination of anhydrous calcium chloride and white carbon black, wherein the diameter of anhydrous calcium chloride is 3mm, and its mass ratio is a...

Embodiment 2

[0042] A solid blended fertilizer containing coated synergistic urea and ammonium nitrate, using coated synergistic urea, ammonium nitrate and water-absorbing agent as raw materials; the quality of the coated synergistic urea, ammonium nitrate and water-absorbing agent The ratio is 58:18:4.

[0043] The coated synergistic urea is composed of 93.4% urea, 1.6% binder, 4.7% coating material, and 0.3% synergist by mass percentage; wherein urea is a solid particle with a diameter of 3mm, and the binder is 60% phosphoric acid Solution, the coating material is zinc oxide, and the synergist is a combination of diethylaminoethanol ester: n-butylthiophosphoric triamide: 3,4 dimethylpyrazole phosphate = 0.5:2:1 by mass .

[0044] The ammonium nitrate is a solid particle with a diameter of 3mm;

[0045] The water-absorbing agent is a combination of anhydrous calcium chloride and white carbon black, wherein the diameter of the anhydrous calcium chloride is 3mm, and its mass ratio is anhy...

Embodiment 3

[0051] A solid blended fertilizer containing coated synergistic urea and ammonium nitrate, using coated synergistic urea, ammonium nitrate and water-absorbing agent as raw materials; the quality of the coated synergistic urea, ammonium nitrate and water-absorbing agent The ratio is 25:70:5.

[0052] The coated synergistic urea is composed of 93.4% urea, 1.6% binder, 4.7% coating material, and 0.3% synergist by mass percentage; wherein urea is a solid particle with a diameter of 3mm, and the binder is 60% phosphoric acid Solution, the coating material is calcium oxide, and the synergist is a combination of diethylaminoethanol ester: n-butylthiophosphoric triamide: 3,4 dimethylpyrazole phosphate = 1:1:2 by mass .

[0053] The ammonium nitrate is a solid particle with a diameter of 3mm;

[0054] The water-absorbing agent is a combination of anhydrous calcium chloride and white carbon black, wherein the diameter of the anhydrous calcium chloride is 3mm, and its mass ratio is anh...

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Abstract

The invention relates to a solid blended fertilizer containing coated synergistic urea and ammonium nitrate and a preparation method thereof. The fertilizer uses coated synergistic urea, ammonium nitrate and a water-absorbing agent as raw materials; the coated synergistic urea , the mass ratio of ammonium nitrate and water-absorbing agent is (10-95): (10-95): (1-5); the coated synergistic urea is composed of the following components according to mass percentage: urea 90-95%, Binder 0.5-3%, coating material 1.5-7%, synergist 0.1-0.5%. The blended fertilizer prepared by the invention has the advantages of high utilization rate of nitrogen fertilizer, long fertilizer effect period, high fertilizer effect, etc., and solves the problem that urea and ammonium nitrate are very easy to absorb moisture after being mixed. The preparation method provided by the invention is simple and convenient, does not require complex production equipment, and the obtained product is in a solid form, has higher nutrient concentration, is convenient for packaging and transportation, and not only reduces production costs but also reduces transportation costs.

Description

technical field [0001] The invention relates to a solid mixed fertilizer containing coated synergistic urea and ammonium nitrate and a preparation method thereof, belonging to the technical field of agricultural fertilizers. Background technique [0002] The production of urea ammonium nitrate fertilizers began in the United States in the 1970s. It is generally prepared from urea, ammonium nitrate and water. The three nitrogen sources are concentrated in one product, which can give full play to the advantages of various nitrogen sources. Therefore, urea Ammonium nitrate fertilizers have been widely used. Because solid urea and ammonium nitrate can absorb moisture very easily after contacting, after mixing, they absorb water and become liquid quickly when exposed to the air, so the known urea ammonium nitrate fertilizers are mostly in a liquid state, for example: Chinese patent document CN105565909A discloses A urea-ammonium nitrate water-soluble fertilizer and a preparation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G5/10C05G3/90C05G3/60C05G3/00C05G5/30C05G3/30
CPCC05G3/00C05B7/00
Inventor 裴海荣郑树林郭宗瑞袁凤英王晓龙胡兆平
Owner KINGENTA ECOLOGICAL ENG GRP
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