Anti-caking fast-dissolving nitro-compound fertilizer and preparation method thereof

A nitro compound fertilizer and anti-caking technology, which is applied in the direction of urea compound fertilizer, ammonium nitrate fertilizer, nitrogen fertilizer, etc., can solve the problems of easy loss, poor slow-release effect, etc., achieve rapid dissolution, save agricultural water, and improve crops quality effect

Inactive Publication Date: 2017-04-19
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the lack of instant solubility faced by traditional nitro fertilizers at present, and the defects of poor slow-release effect and easy loss, the present invention proposes an anti-caking instant nitro fertilizer and its preparation method, which is coated on the surface of fine nitro fertilizer particles Cover anhydrous soluble slurry to obtain a kind of nitro fertilizer with anti-caking instant, and the coating layer has anti-caking and instant characteristics. The technical scheme adopted in the present invention is as follows:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] First, nitro compound fertilizer is granulated, with 60 parts of ammonium nitrate, 25 parts of ammonium monohydrogen phosphate, 10 parts of potassium sulfate, 3 parts of explosion-proof additives, 1.5 parts of borax in total, and 0.5 parts of calcium and magnesium chelated by EDTA , using a high-tower granulator to form fine particles of nitro compound fertilizer.

[0030] Preparation of anhydrous slurry: 50 parts of refined cellulose ether, 8 parts of soluble sucrose, 32 parts of urea, and 10 parts of dispersant were mixed at 60° C. to form an anhydrous slurry.

[0031] Add the fine particles of nitro fertilizer into the ribbon mixer with auxiliary heating structure, start the mixer to stir and preheat, slowly add the pre-made anhydrous slurry, the amount of slurry added is 5 per 1000 parts by weight of fertilizer particles The anhydrous slurry in parts by weight is continuously rotated and mixed at a rotating speed of 800rpm, and the viscosity of the slurry is used to...

Embodiment 2

[0037] Firstly, nitro compound fertilizer is granulated, with 62 parts of ammonium nitrate, 28 parts of ammonium dihydrogen phosphate, 6 parts of potassium sulfate, 3 parts of explosion-proof additives, 0.5 parts of borax in total, and 0.5 parts of calcium and magnesium chelated by EDTA , using a high-tower granulator to form fine particles of nitro compound fertilizer.

[0038] Preparation of anhydrous slurry: 54 parts of cellulose ether, 7 parts of soluble sucrose, 30 parts of urea, and 9 parts of dispersant were mixed at 50° C. to form an anhydrous slurry.

[0039] Add the fine particles of nitro fertilizer into the ribbon mixer with auxiliary heating structure, start the mixer to stir and preheat, slowly add the pre-made anhydrous slurry, and the amount of slurry added is 4 per 1000 parts by weight of fertilizer particles. The anhydrous slurry in parts by weight is continuously rotated and mixed at a speed of 500 rpm, and the viscosity of the slurry is used to evenly wrap ...

Embodiment 3

[0044] First carry out granulation of nitro compound fertilizer, with 65 parts of ammonium nitrate, 20 parts of ammonium dihydrogen phosphate, 15 parts of potassium sulfate, 3 parts of explosion-proof additives, 1.2 parts of borax in total, and 0.8 parts of calcium and magnesium chelated by EDTA , using a high-tower granulator to form fine particles of nitro compound fertilizer.

[0045] Preparation of anhydrous slurry: 60 parts of refined cellulose ether, 10 parts of soluble sucrose, 20 parts of urea, and 10 parts of dispersant were mixed at 55° C. to form an anhydrous slurry.

[0046] Add the fine particles of nitro fertilizer into the ribbon mixer with auxiliary heating structure, start the mixer to stir and preheat, slowly add the pre-made anhydrous slurry, and the amount of slurry added is 8 per 1000 parts by weight of fertilizer particles. The anhydrous slurry in parts by weight is continuously rotated and mixed at a rotating speed of 1000rpm, and the viscosity of the sl...

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Abstract

The invention provides an anti-caking fast-dissolving nitro-compound fertilizer and a preparation method thereof. The preparation method comprises the following steps: dispersing micronized cellulose ether, soluble sugar and a dispersant in molten urea to form anhydrous slurry; and coating the surface of nitro-compound fertilizer fine-particles with the slurry. The coating layer has anti-caking and fast-dissolving properties. Thus, the anti-caking fast-dissolving nitro-compound fertilizer is obtained.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular relates to a nitro compound fertilizer and a preparation method thereof. Background technique [0002] Agricultural modernization puts forward higher requirements for chemical fertilizers. In recent years, the production of chemical fertilizers is becoming more and more efficient and compounded. Trace element fertilizers and pesticides are added to them to become multifunctional compound fertilizers. It is convenient to combine the pipeline transportation of fertilizers with irrigation (spray irrigation, drip irrigation), which has the advantages of saving labor and Advantages of improving fertilizer use efficiency. [0003] Compound fertilizer refers to chemical fertilizer containing two or more nutrient elements. Compound fertilizer has the advantages of high nutrient content, less auxiliary components and good physical properties. It is very important for ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05G3/20C05G5/30C05C1/00C05C9/00C05D1/02C05D3/00C05D5/00C05D9/00
Inventor 陈庆曾军堂王镭迪
Owner CHENDU NEW KELI CHEM SCI CO LTD
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