Slow release composite fertilizer for high-tower granulation and preparation method thereof

A slow-release compound fertilizer and high-tower granulation technology, which is applied in fertilization devices, fertilizer mixtures, agricultural gas emission reduction, etc., can solve the problem of difficult degradation of molecular polymer-coated slow-release fertilizers, secondary soil pollution, environmental pollution, etc. problem, to achieve the effect of improving disease resistance, enhancing sustained release effect, and improving physical properties

Inactive Publication Date: 2019-05-21
GARSONI FERTILIZER MEISHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, compound slow-release fertilizers are mostly coated with organic polymers. Although their fertilizers have good slow-release performance and can significantly improve the utilization rate of fertilizers, such coating materials are mostly prepared with organic solvents, and these Organic solvents have problems such as environmental pollution and high cost caused by volatilization
At the same time, most of the organic polymer-coated slow-release fertilizers prepared on this basis are difficult to degrade, and the residual organic polymer shells will inevitably cause secondary pollution to the soil.

Method used

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  • Slow release composite fertilizer for high-tower granulation and preparation method thereof
  • Slow release composite fertilizer for high-tower granulation and preparation method thereof
  • Slow release composite fertilizer for high-tower granulation and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A high-tower granulated slow-release compound fertilizer is prepared from the following raw materials in parts by weight: 100 parts of urea, 80 parts of monoammonium phosphate, 60 parts of potassium chloride, 20 parts of lapis lazuli powder, 10 parts of attapulgite powder, 10 parts of diatomite, 5 parts of medium and trace element mixture, 3 parts of synergist, and 5 parts of outer layer coating agent; the outer layer coating agent is prepared by the following method: (1) take corn stalks, After drying at 70°C, it was pulverized, passed through a 0.5mm sieve, and then calcined in a muffle furnace at a calcination temperature of 500°C for a calcination time of 3 hours. After cooling to room temperature, it passed through a 0.15mm sieve to obtain a powder for use; (2) Dissolve polyvinyl alcohol in 20 times the weight of water, heat the water bath to 90°C to dissolve the polyvinyl alcohol completely, then add 1.5% polyvinylpyrrolidone by weight of the mixture, stir at a con...

Embodiment 2

[0037] A high-tower granulated slow-release compound fertilizer is prepared from the following raw materials in parts by weight: 120 parts of urea, 90 parts of monoammonium phosphate, 70 parts of potassium chloride, 30 parts of lapis lazuli powder, 15 parts of attapulgite powder, 15 parts of diatomite, 10 parts of medium and trace element mixture, 4 parts of synergist, and 8 parts of outer layer coating agent; the outer layer coating agent is prepared by the following method: (1) take corn stalks, After drying at 70°C, it was pulverized, passed through a 0.5mm sieve, and then calcined in a muffle furnace at a calcination temperature of 500°C for a calcination time of 3 hours. After cooling to room temperature, it passed through a 0.15mm sieve to obtain a powder for use; (2) Dissolve polyvinyl alcohol in 20 times the weight of water, heat the water bath to 90°C to dissolve the polyvinyl alcohol completely, then add 1.5% polyvinylpyrrolidone by weight of the mixture, stir at a co...

Embodiment 3

[0048] A high-tower granulated slow-release compound fertilizer is prepared from the following raw materials in parts by weight: 150 parts of urea, 100 parts of monoammonium phosphate, 80 parts of potassium chloride, 40 parts of lapis lazuli powder, 20 parts of attapulgite powder, 20 parts of diatomite, 15 parts of medium and trace element mixture, 5 parts of synergist, and 10 parts of outer layer coating agent; the outer layer coating agent is prepared by the following method: (1) take corn stalks, After drying at 70°C, it was pulverized, passed through a 0.5mm sieve, and then calcined in a muffle furnace at a calcination temperature of 500°C for a calcination time of 3 hours. After cooling to room temperature, it passed through a 0.15mm sieve to obtain a powder for use; (2) Dissolve polyvinyl alcohol in 20 times the weight of water, heat the water bath to 90°C to dissolve the polyvinyl alcohol completely, then add 1.5% polyvinylpyrrolidone by weight of the mixture, stir at a ...

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Abstract

The invention discloses a slow release composite fertilizer for high-tower granulation and a preparation method thereof and belongs to the technical field of fertilizer. The fertilizer is prepared from, by weight, 100-150 parts of urea, 80-100 parts of monoammonium phosphate, 60-80 parts of potassium chloride, 20-40 parts of celestite powder, 10-20 parts of attapulgite powder, 10-20 parts of kieselguhr, 5-15 parts of a medium trace element mixture, 3-5 parts of a synergist and 5-10 parts of an outer-layer coating agent; the outer-layer coating agent is prepared in the mode that polyvinyl alcohol and polyvinylpyrrolidone are subjected to copolymerization, and then biomass charcoal is added. According to the slow release composite fertilizer, nanosilicon dioxide is added as the synergist, and through cooperation of the synergist and a coating material, an obvious slow release effect of the fertilizer is achieved. The prepared fertilizer is safe, environmentally friendly, has an obvious fertilizer efficiency, capable of achieving high tower granulation, low in cost and high in efficiency and has high market application potential.

Description

technical field [0001] The technical field of fertilizers of the present invention particularly relates to a high-tower granulated slow-release compound fertilizer and a preparation method thereof. Background technique [0002] my country is a country with a large population and a large agriculture. It uses 7% of the world's land to feed 22% of the world's population. The food issue is always a major issue related to the national economy and people's livelihood. my country has 2 billion mu of arable land and needs 150 million tons of fertilizers annually. It is the world's largest importer of fertilizers and producer of nitrogen fertilizers. Even so, the amount of chemical fertilizers still cannot meet the needs of agricultural development. The reason is that the key problem is that the utilization rate of chemical fertilizers is too low. According to surveys, the utilization rate of chemical fertilizers in my country is only 35-40%, and the rest is fixed by the soil, or l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
CPCY02A40/22Y02P60/21
Inventor 唐雷王贤伟林兴文
Owner GARSONI FERTILIZER MEISHAN
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