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Adhesive type controlled-release fertilizer and preparation method thereof

A controlled-release fertilizer and adhesive technology, applied in the direction of inorganic fertilizers, ammonium salt fertilizers, fertilizer mixtures, etc., can solve the problems of slow effect and low utilization rate, achieve rapid effect, improve utilization rate, and ensure overall uniformity Effect

Inactive Publication Date: 2018-04-06
长沙善道新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an adhesive type controlled-release fertilizer and its preparation method to solve the technical problems of slow onset and low utilization rate

Method used

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  • Adhesive type controlled-release fertilizer and preparation method thereof
  • Adhesive type controlled-release fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of sticky type controlled-release fertilizer, the specific steps are as follows:

[0030] (1) Preparation of mixed adhesive: dissolve polyglycolic acid, polyamino acid and sodium lignosulfonate in water, then add pregelatinized starch, stir evenly, quickly add disproportionated rosin heated to melting in advance, under the action of ultrasonic oscillation , slowly add polyglycolide and urea-formaldehyde resin emulsion, and continue ultrasonic oscillation for 30 minutes to obtain a mixed adhesive for later use;

[0031] (2) the inorganic fertilizer component is added in the water of 0.3 times of weight, so that part of the inorganic fertilizer component dissolves;

[0032] (3) heating to boiling, adding the mixed adhesive obtained in step (1) while stirring, fully mixing, and continuing to stir until the moisture weight content of the mixture is lower than 10%;

[0033] (4) Heating to melting, spraying and granulating to make granules with a particl...

Embodiment 2

[0042] A preparation method of sticky type controlled-release fertilizer, the specific steps are as follows:

[0043] (1) Preparation of mixed adhesive: dissolve polyglycolic acid, polyamino acid and sodium lignosulfonate in water, then add pregelatinized starch, stir evenly, quickly add disproportionated rosin pre-heated to melt, under the action of ultrasonic oscillation , slowly add polyglycolide and urea-formaldehyde resin emulsion, and continue ultrasonic oscillation for 40 minutes to obtain a mixed adhesive for later use;

[0044] (2) the inorganic fertilizer component is added in the water of 0.4 times of weight, so that part of the inorganic fertilizer component dissolves;

[0045] (3) heating to boiling, adding the mixed adhesive obtained in step (1) while stirring, fully mixing, and continuing to stir until the moisture weight content of the mixture is lower than 10%;

[0046] (4) Heating to melting, spraying and granulating to make granules with a particle diameter...

Embodiment 3

[0055] A preparation method of sticky type controlled-release fertilizer, the specific steps are as follows:

[0056](1) Preparation of mixed adhesive: dissolve polyglycolic acid, polyamino acid and sodium lignosulfonate in water, then add pregelatinized starch, stir evenly, quickly add disproportionated rosin heated to melting in advance, under the action of ultrasonic oscillation , slowly add polyglycolide and urea-formaldehyde resin emulsion, and continue ultrasonic oscillation for 30 minutes to obtain a mixed adhesive for later use;

[0057] (2) the inorganic fertilizer component is added in the water of 0.4 times of weight, so that part of the inorganic fertilizer component dissolves;

[0058] (3) heating to boiling, adding the mixed adhesive obtained in step (1) while stirring, fully mixing, and continuing to stir until the moisture weight content of the mixture is lower than 10%;

[0059] (4) Heating to melting, spraying and granulating to make granules with a particle...

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Abstract

The invention provides an adhesive type controlled-release fertilizer and a preparation method thereof. The preparation method comprises the following steps: dissolving one part of inorganic fertilizer components, uniformly mixing the inorganic fertilizer components with a mixed adhesive, and mutually coating the inorganic fertilizer components and the mixed adhesive to prepare a granular fertilizer, wherein after application, the inorganic fertilizer components on the surface can be rapidly released, and the efficacy is fast. The mixed adhesive is prepared from polyglycolic acid, polyamino acid, pregelatinized starch, disproportionated rosin, polyglycollide, urea resin emulsion and the like. The prepared fertilizer is naturally degraded after applied, and along with degradation of the mixed adhesive, the inorganic fertilizer components coated in the fertilizer are slowly released, the controlled release aim is achieved, and the utilization rate of the fertilizer is improved.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to an adhesive-type controlled-release fertilizer and a preparation method thereof. Background technique [0002] In recent years, the world's chemical fertilizer consumption has been increasing, consuming a large amount of non-renewable resources, but the utilization rate of chemical fertilizers has been low. For our country, as a big agricultural country, it is also a big country that consumes chemical fertilizers. The loss of a large amount of fertilizer not only causes huge economic losses, but also causes serious environmental pollution. In order to meet the development requirements of modern agriculture and the increasingly severe environmental protection situation, technical improvements for fertilizers have been going on. [0003] An important reason for the low utilization rate of fertilizers is that the current chemical fertilizers are instant fertilizers, which cann...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B1/02C05G3/00C05G5/12C05C3/00C05D1/02
Inventor 不公告发明人
Owner 长沙善道新材料科技有限公司
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