Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation technology of water-retention slow-release fertilizer

A technology of slow-release fertilizer and preparation process, which is applied in the direction of fertilizer mixture, fertilization device, application, etc., and can solve the problem of easy adhesion of fertilizer particles

Inactive Publication Date: 2016-06-22
JIANGYIN LIANYE BIOTECHOLOGY
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the preparation of water-retaining and slow-release fertilizers is to place the slow-release fertilizer in the reactor, so that the polymerized monomer stock solution directly initiates the polymerization coating on the surface of the fertilizer. Due to the high viscosity of the coating polymerization solution, the fertilizer particles are separated from each other. Prone to adhesion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation technology of the water-retaining slow-release fertilizer of embodiment 1 comprises the following steps:

[0018] S1: Add urea granules with a particle size of 2 to 3mm into the disc granulator;

[0019] S2: Spray an organic binder on the surface of urea granules until a layer of adhesive liquid is formed on the surface of urea with slight adhesion, then add slow-release material into the granulator and turn until the slow-release material powder is completely wrapped on the surface of urea granules , spraying the organic binder on the surface of the urea particles again, repeating the above operation several times to form an inner coating layer;

[0020] S3: Spray heated and melted paraffin into the disc granulator with a high-pressure spray gun to make coated urea;

[0021] S4: Spray the organic binder again, and sprinkle the water-retaining agent powder into the granulator until the water-retaining agent powder is completely wrapped on the surface of...

Embodiment 2

[0026] The preparation technology of the water-retaining slow-release fertilizer of embodiment 2 comprises the following steps:

[0027] S1: Add urea granules with a particle size of 2 to 3mm into the disc granulator;

[0028] S2: Spray an organic binder on the surface of urea granules until a layer of adhesive liquid is formed on the surface of urea with slight adhesion, then add slow-release material into the granulator and turn until the slow-release material powder is completely wrapped on the surface of urea granules , spraying the organic binder on the surface of the urea particles again, repeating the above operation several times to form an inner coating layer;

[0029] S3: Spray heated and melted paraffin into the disc granulator with a high-pressure spray gun to make coated urea;

[0030] S4: Spray the organic binder again, and sprinkle the water-retaining agent powder into the granulator until the water-retaining agent powder is completely wrapped on the surface of...

Embodiment 3

[0035] The preparation technology of the water-retaining slow-release fertilizer of embodiment 3 comprises the following steps:

[0036] S1: Add urea granules with a particle size of 2 to 3mm into the disc granulator;

[0037] S2: Spray an organic binder on the surface of urea granules until a layer of adhesive liquid is formed on the surface of urea with slight adhesion, then add slow-release material into the granulator and turn until the slow-release material powder is completely wrapped on the surface of urea granules , spraying the organic binder on the surface of the urea particles again, repeating the above operation several times to form an inner coating layer;

[0038] S3: Spray heated and melted paraffin into the disc granulator with a high-pressure spray gun to make coated urea;

[0039] S4: Spray the organic binder again, and sprinkle the water-retaining agent powder into the granulator until the water-retaining agent powder is completely wrapped on the surface of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation technology of water-retention slow-release fertilizer. The preparation technology comprises material blending, inner coating layer bonding, seal layer bonding and water-retaining agent bonding. The preparation technology utilizes urea as a core, humic acid-rich weathered coal, phosphate rock or bentonite as an inner coating film and high-hydroscopicity resin as an outer coating film to prepare fertilizer with water-retaining properties and slow release effects. The outer coating film water-retaining agent and urea of the water-retention slow-release fertilizer are bonded through hydrogen bonds so that the water-retaining agent can adsorb a certain amount of urea molecules. When urea content in the environment is low, the water-retention slow-release fertilizer can slowly release urea in the environment so that the water-retaining agent has functions of water absorption and water retention and has a certain nutrient slow-release function.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a preparation process for water-retaining slow-release fertilizers. Background technique [0002] my country is a large agricultural country. Chemical fertilizers and water resources are the important material basis for the development of modern agriculture. The seasonal nutrient utilization rate of chemical fertilizers in my country is low, far behind other developed countries. The low fertilizer utilization rate not only causes environmental pollution such as water eutrophication and ozone layer destruction, but also wastes a lot of manpower, financial resources and resources. Studies have shown that the application of slow-release urea can effectively improve nitrogen use efficiency, which is in line with the policy of developing sustainable and efficient agriculture. So far, a variety of slow-release materials have been explored, and some slow-release coated fertilizers have been ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 陆建明
Owner JIANGYIN LIANYE BIOTECHOLOGY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com