CN101863707A - Controlled-release diammonium phosphate and preparation method thereof - Google Patents
Controlled-release diammonium phosphate and preparation method thereof Download PDFInfo
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- CN101863707A CN101863707A CN201010231884A CN201010231884A CN101863707A CN 101863707 A CN101863707 A CN 101863707A CN 201010231884 A CN201010231884 A CN 201010231884A CN 201010231884 A CN201010231884 A CN 201010231884A CN 101863707 A CN101863707 A CN 101863707A
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- diammonium phosphate
- release
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- sulfur
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Abstract
The invention relates to controlled-release diammonium phosphate, which contains the following active ingredients by weight percent: 13-17 percent of nitrogen, 38-43 percent of active phosphorus pentoxide and 1.5-8 percent of sulfur. The preparation method of the controlled-release diammonium phosphate comprises the following steps: taking diammonium phosphate as raw material and granulating; spraying mist sulfur melt liquid on the surfaces of diammonium phosphate granules, wherein the dosage of the sulfur is 3-10 percent of the weight of the diammonium phosphate; and cooling and screening the diammonium phosphate granules with surfaces on which the sulfur melt liquid is sprayed to obtain the controlled-release diammonium phosphate. Since the sulfur enveloping treatment is conducted to the diammonium phosphate and the sulfur content is moderate, the invention has the advantages that the release time of the controlled-release diammonium phosphate is long, the duration of fertilizer efficiency is long, the fertilizer is not taken off at later stage, the goal of slow release and controlled release is reached, the fertilizer utilization ratio is improved, the environmental pollution caused by chemical fertilizer is reduced and the yield increasing effect is obvious. The invention implements the standard GB10205-2009, the total primary nutrient of nitrogen and phosphorous is more than or equal to 53 percent, and the controlled-release diammonium phosphate can be widely used for all kinds of crops.
Description
Technical field
The present invention relates to a kind of control release type fertilizer, specifically is a kind of controlled-release diammonium phosphate fertilizer that adds sulfur coating; The invention still further relates to the preparation method of this controlled-release diammonium phosphate.
Background technology
China is since last century, the eighties began application of phosphoric acid two ammoniums, and the peasant adopts the fertilizing method that directly spreads fertilizer over the fields always in application, and this method has following weak point: the one, and diammonium phosphate discharges fast, later stage fertilizer efficiency deficiency; The 2nd, more serious to soil, river pollution; The 3rd, amount of application is big, and the peasant drops into many, the cost height.
Summary of the invention
The purpose of this invention is to provide two ammonium time of releasing of a kind of controlled release long, the fertilizer efficiency cycle is lasting, the later stage is not taken off fertilizer,, amount of application light to soil, river pollution reduces, a kind of controlled-release diammonium phosphate and production method thereof that the peasant drops into is low, burden is light.
The object of the present invention is achieved like this: a kind of controlled-release diammonium phosphate, the weight percent of effective ingredient is in the controlled-release diammonium phosphate: nitrogen 13%-17%, effective Vanadium Pentoxide in FLAKES 38%-43%, sulphur 1.5%-8%.
The method for preparing controlled-release diammonium phosphate is a raw material with the diammonium phosphate, granulates; The mist sulfur fused solution is sprayed on the diammonium phosphate particle surface, and the add-on of sulphur is 3%-10% of a diammonium phosphate weight; The diammonium phosphate particle cooling screening that the surface is coated with the sulphur fused solution promptly gets controlled-release diammonium phosphate.
The add-on of sulphur is 3%-10% of a diammonium phosphate weight
The present invention carries out sulfur coating to diammonium phosphate and handles, and sulphur content is moderate, and controlled release two ammoniums are long time of releasing, the fertilizer efficiency cycle is lasting, and the later stage is not taken off fertilizer, has reached the purpose of sustained-release and controlled release, improve the fertilizer efficiency utilization ratio, reduce the chemical fertilizer environmental pollution, effect of increasing production is obvious.The present invention carries out the GB10205-2009 standard, and nitrogen phosphorus total nutrient 〉=53% can be widely used in various farm crop.
Embodiment
Embodiment 1:
200 kilograms of granular diammonium phosphate are added in the rotating cylinder, be preheated to 45 ℃-55 ℃, again with 6 kilograms of sulphur in fusion more than 114 ℃, in rotating cylinder, spray into the mist sulfur fused solution with fog gun, rotating cylinder constantly rotates, make the sulphur fused solution evenly be applied to the diammonium phosphate surface, be cooled to behind the normal temperature the controlled-release diammonium phosphate product of sulfur-bearing 2.01%.The weight percent of effective constituent is in the product: nitrogen 16.66%, effective Vanadium Pentoxide in FLAKES 42.43%, sulphur 2.01%.
Embodiment 2:
200 kilograms of granular diammonium phosphate are added in the rotating cylinder, be preheated to 45 ℃-55 ℃, again with 16 kilograms of sulphur in fusion more than 114 ℃, in rotating cylinder, spray into the mist sulfur fused solution with fog gun, rotating cylinder constantly rotates, make the sulphur fused solution evenly be applied to the diammonium phosphate surface, be cooled to behind the normal temperature the controlled-release diammonium phosphate product of sulfur-bearing 6.37%.The weight percent of effective constituent is in the product: nitrogen 15.28%, effective Vanadium Pentoxide in FLAKES 42.83%, sulphur 6.37%.
Embodiment 3:
200 kilograms of granular diammonium phosphate are added in the rotating cylinder, be preheated to 45 ℃-55 ℃, again with 20 kilograms of sulphur in fusion more than 114 ℃, in rotating cylinder, spray into the mist sulfur fused solution with fog gun, rotating cylinder constantly rotates, make the sulphur fused solution evenly be applied to the diammonium phosphate surface, be cooled to behind the normal temperature the controlled-release diammonium phosphate product of sulfur-bearing 8.22%.The weight percent of effective constituent is in the product: nitrogen 14.98%, effective Vanadium Pentoxide in FLAKES 41.98%, sulphur 8.22%.
Claims (3)
1. controlled-release diammonium phosphate, it is characterized in that: the weight percent of effective ingredient is in the controlled-release diammonium phosphate: nitrogen 13%-17%, effectively Vanadium Pentoxide in FLAKES 38%-43%, sulphur 1.5%-8%.
2. prepare the method for the described controlled-release diammonium phosphate of claim 1, it is characterized in that:
With the diammonium phosphate is raw material, granulates; The mist sulfur fused solution is sprayed on the diammonium phosphate particle surface, and the add-on of sulphur is 3%-10% of a diammonium phosphate weight; The diammonium phosphate particle cooling screening that the surface is coated with the sulphur fused solution promptly gets controlled-release diammonium phosphate.
3. the method for preparing controlled-release diammonium phosphate according to claim 2 is characterized in that: the add-on of sulphur is 3%-10% of a diammonium phosphate weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010231884A CN101863707A (en) | 2010-07-21 | 2010-07-21 | Controlled-release diammonium phosphate and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010231884A CN101863707A (en) | 2010-07-21 | 2010-07-21 | Controlled-release diammonium phosphate and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101863707A true CN101863707A (en) | 2010-10-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010231884A Pending CN101863707A (en) | 2010-07-21 | 2010-07-21 | Controlled-release diammonium phosphate and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN101863707A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045687A (en) * | 2016-05-31 | 2016-10-26 | 湖北富邦科技股份有限公司 | Preparation method of novel anti-blocking granulated fertilizer |
| CN106045684A (en) * | 2016-05-31 | 2016-10-26 | 湖北富邦科技股份有限公司 | Sulfur-containing ammonium phosphate fertilizer with anti-caking function and production method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569774A (en) * | 2004-04-27 | 2005-01-26 | 山东农业大学 | Heavy polymer coated slow-release fertilizer with sulfide as bottom coat |
| CN101302122A (en) * | 2008-06-13 | 2008-11-12 | 云南云天化国际化工股份有限公司 | Sulphur-containing diammonium phosphate fertilizer and production process thereof |
| CN100448803C (en) * | 2007-12-14 | 2009-01-07 | 山东金正大生态工程股份有限公司 | Special-purpose controlled-release fertilizer coated with sulfur and resin for celery cabbage and preparation method thereof |
| US20100035308A1 (en) * | 2008-08-08 | 2010-02-11 | Ajinomoto U.S.A., Inc. | Method of preparing a controlled release fertilizer |
-
2010
- 2010-07-21 CN CN201010231884A patent/CN101863707A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569774A (en) * | 2004-04-27 | 2005-01-26 | 山东农业大学 | Heavy polymer coated slow-release fertilizer with sulfide as bottom coat |
| CN100448803C (en) * | 2007-12-14 | 2009-01-07 | 山东金正大生态工程股份有限公司 | Special-purpose controlled-release fertilizer coated with sulfur and resin for celery cabbage and preparation method thereof |
| CN101302122A (en) * | 2008-06-13 | 2008-11-12 | 云南云天化国际化工股份有限公司 | Sulphur-containing diammonium phosphate fertilizer and production process thereof |
| US20100035308A1 (en) * | 2008-08-08 | 2010-02-11 | Ajinomoto U.S.A., Inc. | Method of preparing a controlled release fertilizer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045687A (en) * | 2016-05-31 | 2016-10-26 | 湖北富邦科技股份有限公司 | Preparation method of novel anti-blocking granulated fertilizer |
| CN106045684A (en) * | 2016-05-31 | 2016-10-26 | 湖北富邦科技股份有限公司 | Sulfur-containing ammonium phosphate fertilizer with anti-caking function and production method thereof |
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Application publication date: 20101020 |