Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of nitrate nitrogen-containing fertilizer special for fruits and vegetables

A technology for special fertilizers and production methods, which can be applied to fertilizer mixtures, ammonium orthophosphate fertilizers, alkaline orthophosphate fertilizers, etc., and can solve the problems of excessive returning materials, easy agglomeration and pulverization of finished fertilizers, and scarring of material granulation cylinders And other issues

Inactive Publication Date: 2021-08-20
湖北都兴隆农业技术有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the process of producing compound fertilizers by using the by-product calcium ammonium nitrate by granulation method, if raw materials containing urea are added to the granulation cylinder, it often causes large balls of the material and serious scarring of the granulation cylinder, and the entire production system returns more materials and lowers the yield. Low, rough and not smooth particles; and the finished fertilizer is particularly easy to agglomerate and pulverize

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

[0016] Put 3,000 parts of urea, 1,000 parts of water, 35 parts of isobutyraldehyde, and 1 part of potassium dihydrogen phosphate into the slurry tank in turn as catalysts, and use dilute sulfuric acid to adjust the pH value to 3.8-4.2. Raise the temperature to 55 degrees, stir vigorously for 30 minutes; finally add 30 parts of tetrasodium glutamic acid diacetate, 15 parts of medium and trace elements, and 50 parts of humic acid, and mix thoroughly to obtain 4131 parts of concentrated slurry.

[0017] Add 525 kg of by-product calcium ammonium nitrate, 230 kg of monoammonium phosphate, 180 kg of potassium chloride with a 58% content, and 20 kg of zeolite powder into the granulation cylinder to mix, and spray 45 kg of thick slurry to granulate. The balling rate of the material is above 95%, the particle size is uniform and smooth, and the return of the screening system is low. Check the sample after standing for 6 months, no agglomeration, no pulverization.

[0018] The obtained...

Embodiment 2

[0020] Put 3,500 parts of urea, 1,000 parts of water, 40 parts of isobutyraldehyde, and 1 part of potassium dihydrogen phosphate into the slurry tank in turn as catalysts, and use dilute sulfuric acid to adjust the pH value to 3.8-4.2. Raise the temperature to 55°C and stir vigorously for 30 minutes; finally add 20 parts of tetrasodium glutamic acid diacetate, 15 parts of medium and trace elements, and 60 parts of humic acid, and mix thoroughly to obtain 4636 parts of concentrated slurry.

[0021] Add 540 kg of by-product calcium ammonium nitrate, 240 kg of monoammonium phosphate, 160 kg of potassium sulfate with a 52% content, and 10 kg of zeolite powder into the granulation cylinder, and spray 50 kg of thick slurry to granulate. The balling rate of the material is above 95%, the particle size is uniform and smooth, and the return of the screening system is low. Check the sample after standing for 6 months, no agglomeration, no pulverization.

[0022] The obtained product is...

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 method of a nitrate nitrogen-containing special fertilizer for fruits and vegetables, which comprises the steps of mixing by-products calcium ammonium nitrate, monoammonium phosphate, a potash fertilizer and zeolite powder, feeding the mixture into a granulation cylinder, spraying concentrated slurry formed by mixing urea, isobutyraldehyde, monopotassium phosphate, dilute sulfuric acid, tetrasodium glutamate diacetate, medium trace elements and humic acid into the granulation cylinder for granulating. Waste resources can be reasonably utilized, the production efficiency is greatly improved, few materials are returned by a production system, the product appearance is improved, and caking and pulverization are avoided; and the nitrogen and phosphorus utilization rate can be improved, and the fertilizer efficiency reaches six months or above.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of agricultural fertilizers, and in particular relates to a preparation method of special fertilizers for fruits and vegetables containing nitrate nitrogen. Background technique [0002] Calcium ammonium nitrate is a by-product of pharmaceutical factory waste, which is off-white powder and 100% soluble in water. The nutrient is safer and more comprehensive than the commonly used agricultural ammonium nitrate. After being applied to the soil, the pH is small, which can reduce the concentration of active aluminum and active phosphorus. The fixation will not cause soil compaction, and can make the soil loose, which is very popular among farmers. [0003] At present, in the process of producing compound fertilizers by using the by-product calcium ammonium nitrate by the aggregate method, if raw material components containing urea are added to the granulation cylinder, it often causes large...

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
IPC IPC(8): C05G3/00C05G3/20C05G3/30C05G3/40C05G3/80C05G3/90C05G5/12
CPCC05B7/00C05G3/00C05G3/20C05G3/30C05G3/40C05G3/80C05G3/90C05G5/12
Inventor 江世文王红梅
Owner 湖北都兴隆农业技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com