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Fertilizer coating composite, its making method and multicomponent coated composite fertilizer

A technology of fertilizer coating and composition, applied in the direction of fertilizer mixture, fertilization device, application, etc.

Inactive Publication Date: 2006-03-29
陈大顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] In order to overcome the above-mentioned defects that seriously affect the widespread use of existing coating fertilizers, the applicant of the present invention has found that the coating made of modified natural and / or synthetic colloids has a very good effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] First a fertilizer coating composition is made. Its preparation steps are as follows:

[0102] (1) A mixture of 5 parts by weight of gelatin and 55 parts by weight of water was dissolved at a temperature of 70-75°C for 1.5 hours to obtain a glue, and then 0.5 parts by weight of sodium octadecylbenzenesulfonate was added to the glue , 3.0 parts by weight of silicon dioxide and 12 parts by weight of talcum powder, and continue to stir vigorously for 40 minutes to obtain a uniform mixture.

[0103] (2) 5 parts by weight of thiourea, 4.0 parts by weight of borax, 4.0 parts of zinc sulfate, 5.0 parts of ferrous sulfate and 2.0 parts by weight of manganese sulfate are mixed, then water is added to make a saturated solution, and then 2.0 parts by weight of citric acid are added to mix, A homogeneous mixture is obtained.

[0104] (3) Add the mixture obtained in step (1) to the mixture obtained in step (2), stir and mix for 30 minutes, then adjust the pH of the mixture to 3.5 ...

Embodiment 2

[0114] First a fertilizer coating composition is made. Its preparation steps are as follows:

[0115] (1) Dissolve 5 parts by weight of polyvinyl alcohol in 56 parts by weight of water at a temperature of 95°C to obtain a glue, then add 0.5 parts by weight of sodium hexametaphosphate (10% by weight) to the glue, and stir vigorously A homogeneous mixture can be obtained.

[0116] (2) 5 parts by weight of water glass (modulus 3) is adjusted to pH 10.0-11.0 with dilute phosphoric acid, and vigorously stirred to obtain a uniform mixture.

[0117] (3) Add the mixture obtained in step (1) to the mixture obtained in step (2), stir and mix for 30 minutes, then add 12 parts by weight of light calcium carbonate, 10 parts of talcum powder, and stir at a high speed to obtain a uniform mixture.

[0118] (4) Mix the filtrate obtained in step (3) with 7 parts by weight of calcium chloride (10% by weight) solution to obtain the fertilizer coating composition.

[0119] Now, a multi-element...

Embodiment 3

[0126] First a fertilizer coating composition is made. Its preparation steps are as follows:

[0127] (1) 35 parts by weight of hardened fat was dissolved in 60 parts by weight of water at a temperature of 85°C to obtain a mixture solution.

[0128] (2) Add 0.5 parts by weight of Tween 80 emulsifier to the mixture solution in step (1), stir at high speed to emulsify it, then add 10 parts by weight of dicyandiamide, and stir for 40 minutes to obtain a uniform mixture.

[0129] (3) Add the mixture obtained in step (1) to the mixture obtained in step (2), stir and mix for 30 minutes, then add 10 parts by weight of kaolin and 10 parts by weight of talc, stir at a high speed to obtain a uniform mixture, Filtrate was obtained by filtration.

[0130] (4) Mix the filtrate obtained in step (3) with 10 parts by weight of calcium chloride (10% by weight) solution to obtain the fertilizer coating composition.

[0131] Now, a multi-element coated compound fertilizer manufactured using t...

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Abstract

The present invention relates to a coating composite for making coated granular fertilizer and its production method, and the fertilizer made up by using said coating composite. The coating composite is formed from coating agent, solidfying agent, nitrogen synergist, inorganic acid or organic acid, surfactant and adjuvant. As compared with non-coated fertilizer the nitrogen utilization rate of fertilizer produced by adopting said invention can be raised by 6%-10%, the fertilizer can be saved by 15-45%, and its fertilizer efficiency time can be obviously prolonged, and can be reached to 60-120 days.

Description

[technical field] [0001] The present invention relates to coated fertilizer and its manufacturing method. More specifically, the present invention relates to coating compositions used in coated fertilizers, their production methods, and fertilizers produced using such compositions. [Background technique] [0002] As we all know, elemental nitrogen fertilizer or nitrogen-containing compound fertilizer is the most widely used solid granular fertilizer at present, and they are all water-soluble quick-acting fertilizers. Once these water-soluble quick-acting fertilizers are applied to the soil, some of the fertilizers can be absorbed and utilized by crops, but most of the fertilizers may cause serious losses due to leaching, volatilization or mineralization, resulting in very low fertilizer utilization rates. It not only causes a huge waste of resources, but also causes serious pollution of water areas and the atmospheric environment. This situation has attracted great attentio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 陈大顺
Owner 陈大顺
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