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Sulphur coated urea capable of preventing coating layer from breaking and preparation method thereof

A technology of coating layer and sulfur coating, which is applied in the direction of urea compound fertilizer, nitrogen fertilizer, fertilizer mixture, etc., can solve the problems of high cost, fragile coating layer, and difficult degradation of the coating layer, and achieve the effect of reducing fragmentation

Inactive Publication Date: 2016-02-17
SHENZHEN BATIAN ECOTYPIC ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a sulfur-coated urea that prevents the coating layer from breaking, aiming to solve the problem that the coating layer of the existing sulfur-coated urea is fragile, or the coating layer is not easy to degrade, the cost is high, and long-term use is harmful to the soil and the environment. pollution problems

Method used

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  • Sulphur coated urea capable of preventing coating layer from breaking and preparation method thereof
  • Sulphur coated urea capable of preventing coating layer from breaking and preparation method thereof

Examples

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preparation example Construction

[0027] And, the embodiment of the present invention also provides a method for preparing sulfur-coated urea to prevent the coating layer from breaking, comprising the following steps:

[0028] S01. Weigh each component according to the formula of sulfur-coated urea to prevent the coating layer from breaking, mix the urea-formaldehyde resin and the auxiliary materials to obtain a blend, and dissolve the blend in water to form a coating Covering agent;

[0029] S02. heat-treating the urea in sulfur;

[0030] S03. Apply the coating agent to the urea-in-sulphur and then perform drying treatment.

[0031] Specifically, in the above step S01, the formula of the urea-in-sulfur and its preferred content components for preventing the coating layer from breaking are as above, and in order to save space, details are not repeated here.

[0032] In the embodiment of the present invention, the urea-formaldehyde resin and the auxiliary materials are mixed to obtain a blend, and the blend i...

Embodiment 1

[0040] A sulfur-coated urea that prevents the coating layer from breaking, including sulfur-coated urea and a coating agent, the coating agent coating the surface of the sulfur-coated urea, wherein the coating agent includes urea-formaldehyde resin and auxiliary materials, and The parts by weight of described sulfur-coated urea, urea-formaldehyde resin and auxiliary materials are as follows:

[0041] 1000 parts of sulfur-coated urea;

[0042] 5 parts of urea-formaldehyde resin;

[0043] 0.05 parts of auxiliary materials,

[0044] Wherein, the urea-formaldehyde resin is urea-formaldehyde, and the auxiliary material is zeolite powder.

[0045] And, a kind of preparation method of the sulfur-coated urea that prevents coating layer from breaking, comprises the following steps:

[0046] Weigh each component according to the above-mentioned formula of sulfur-coated urea to prevent the coating layer from breaking, mix the urea-formaldehyde resin and the auxiliary materials to obta...

Embodiment 2

[0050]A urea-in-sulphur that prevents the breaking of the coating layer and a preparation method thereof, the formula of which is based on the above-mentioned Example 1, and the number of parts of the auxiliary material is adjusted to 0.5 parts, and the method is referred to in Example 1.

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Abstract

The invention is suitable for the technical field of coated fertilizer, and provides sulphur coated urea capable of preventing a coating layer from breaking and a preparation method thereof. The sulphur coated urea capable of preventing the coating layer from breaking comprises 1000 parts by weight of sulphur coated urea and a coating agent, the surface of the sulphur coated urea is coated with the coating agent which comprises 5-15 parts by weight of urea resin and 0.05-3 parts by weight of auxiliary materials. The preparation method of the sulphur coated urea capable of preventing the coating layer from breaking comprises the following steps that the components are weighed according to the formula of the sulphur coated urea capable of preventing the coating layer from breaking, the urea resin and the auxiliary materials are mixed and processed to obtain a blend, and the blend is dissolved in water to form the coating agent; heating treatment is conducted on the sulphur coated urea; the sulphur coated urea is coated with the coating agent, and drying treatment is conducted.

Description

technical field [0001] The invention belongs to the technical field of coated fertilizers, and in particular relates to sulfur-coated urea capable of preventing the coating layer from breaking and a preparation method thereof. Background technique [0002] With the development of modern agricultural technology, the extensive application of nitrogen, phosphorus, and potassium elements has led to a decline in soil quality, thereby affecting crop yield and quality. In particular, the large-scale utilization of nitrogen is likely to cause acidification pollution and water pollution to the soil. Coated nitrogen fertilizer can significantly improve nitrogen use efficiency and reduce nitrogen pollution to the soil environment, while sulfur-coated urea can not only improve nitrogen use efficiency, but also provide sulfur nutrition. However, during the transportation and handling of sulfur-coated urea, its sulfur coating layer is too brittle and easily broken, which affects the fert...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05C9/00C05G3/90
Inventor 李峰张建军陈文哲戴毅平
Owner SHENZHEN BATIAN ECOTYPIC ENG
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