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Coating type particle composite fertilizer and producing technique thereof

A compound fertilizer and granule technology, applied in the direction of urea compound fertilizer, fertilizer form, inorganic fertilizer, etc., can solve the problems of fertilizer incompatibility, achieve the effect of improving utilization rate, reducing environmental pollution, and reducing the comprehensive cost of fertilization

Active Publication Date: 2012-08-29
SHENZHEN BATIAN ECOTYPIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of brand-new product for the deficiencies in the prior art, be coating type soluble compound fertilizer, because this compound fertilizer exists mother core (kernel) and one or more layers of coating (coating) coating) structure, so the problem of incompatibility of some fertilizers is solved, and urea is used as the coating material as a soluble fertilizer, providing a new type of compound fertilizer

Method used

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  • Coating type particle composite fertilizer and producing technique thereof
  • Coating type particle composite fertilizer and producing technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: adopt common compound fertilizer granule as inner core (2), with the urea slurry that contains at least 30% by weight with inner core (2) surface through once spray coating, compact coating layer (3); Or the second The second coating is to form a coating layer, or the third coating is to form a coating layer, and so on, multi-layer coatings can be used, and the coating is sprayed for the last time to form the outermost dense coating layer (1). After coating, it is dried and cooled, and then the surface of the shell of the finished product is polished, rounded and anti-hardening sprayed to obtain the product.

[0025] A coated granular compound fertilizer, the coating material is urea, the slurry concentration is 90% by mass; the product has a core diameter of φ1.0mm-φ3.9mm and a fertilizer slurry with a thickness of 0.1mm-1.5mm The outer shell is composed of an obvious color difference between the inner core and the outer coating layer; the surface of the ...

Embodiment 2

[0026] Embodiment 2: A kind of coated granular compound fertilizer, its coating material is urea, and its slurry concentration is 97% by mass percentage; Product diameter is the core of φ1.0mm-φ3.9mm and thickness is 0.1mm-1.5mm The shell of the fertilizer slurry is composed of an obvious color difference between the inner core and the outer coating layer; the surface of the fertilizer granule shell is polished and sprayed with an anti-plate agent, and the diameter of the finished particle is between φ1.8mm-φ4.75mm; the surface is relatively smooth Round, shiny and transparent. The production process is as follows: select the inner core with a product diameter of φ1.0mm-φ3.9mm, spray urea with a slurry concentration of 97% by mass on it, and the temperature of the urea slurry is about 120-135°C. After cooling, it crystallizes in Outside the inner core, a coated compound fertilizer with obvious inner and outer layers is formed.

Embodiment 3

[0027] Embodiment 3: a kind of coated granular compound fertilizer, its coating material is urea, and its slurry concentration is 80% by mass percentage; Product diameter is the core of φ1.0mm-φ3.6mm and thickness is 0.1mm-1.5mm The shell of the fertilizer slurry is composed of an obvious color difference between the inner core and the outer coating layer; the surface of the fertilizer granule shell is polished and sprayed with an anti-plate agent, and the diameter of the finished particle is between φ1.8mm-φ4.75mm; the surface is relatively smooth Round, shiny and transparent. The production process is as follows: select the inner core with a product diameter of φ1.0mm-φ3.9mm, spray urea with a slurry concentration of 80% by mass on it, and the temperature of the urea slurry is about 100-125°C. After cooling, it crystallizes in Outside the inner core, a coated compound fertilizer with obvious inner and outer layers is formed.

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Abstract

The invention relates to a coated granular compound fertilizer using urea as coating material, consisting of an internal core and one or more layers of films. A high concentration urea slurry is adopted as the coating material, the concentration of coating urea slurry is 30 to 99 percent, and the products consist of internal cores with diameters ranging from Phi 1.0mm to Phi 3.9mm and one or morelayers of shells with thickness ranging from Phi 0.1mm to Phi 1.5mm; different layers of the shell are in different colors, and the grain diameters of finish products ranges from Phi 1.8mm to Phi 4.75mm. The invention adopts urea material as the coating material to coat the products, thus realizing instant dissolution effect of the products and solving the problem of the difference between internal core concentration and external core concentration in a same particle, and the comprehensive nutrients can exist in the products at the same time, so the invention can provide a compound fertilizerwith more comprehensive and more suitable nutrients proportion for the soil. Since the internal cores or the internal layers have various colors, internal cores with different colors from the products can be seen through the external coating layer with good transparency, and different colors can be adopted for different products to distinguish the application scope, which is more beautiful and has better selling point.

Description

technical field [0001] The invention relates to a coated granular compound fertilizer and its production process, in particular to an instant compound fertilizer product with an obvious inner core and one or more layers of coating outer layer produced by using conventional raw materials in compound fertilizer production and its production process . Background technique [0002] At present, one type of coated granular compound fertilizer sold in the market uses PE+PU+ co-solvent to coat urea or compound fertilizer, which is a controlled-release or slow-release compound fertilizer. The series of controlled-release compound fertilizers used as binders, and the other is to produce colored slow-release fertilizers on the urea outer coating or compound fertilizer outer coating. The above coated compound fertilizers or urea are either insoluble or slowly soluble to achieve controlled release or slow release, but controlled release or slow release fertilizers are basically small fe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/00C05G5/00C05C9/00C05D1/00
Inventor 黄培钊黄德明王丰登
Owner SHENZHEN BATIAN ECOTYPIC ENG
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