CN110862275A - Method for preparing controlled-release ammonium phosphate fertilizer - Google Patents
Method for preparing controlled-release ammonium phosphate fertilizer Download PDFInfo
- Publication number
- CN110862275A CN110862275A CN201811023804.8A CN201811023804A CN110862275A CN 110862275 A CN110862275 A CN 110862275A CN 201811023804 A CN201811023804 A CN 201811023804A CN 110862275 A CN110862275 A CN 110862275A
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- CN
- China
- Prior art keywords
- ammonium phosphate
- release
- mixture
- slurry
- controlled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000004254 Ammonium phosphate Substances 0.000 title claims abstract description 75
- 229910000148 ammonium phosphate Inorganic materials 0.000 title claims abstract description 75
- 235000019289 ammonium phosphates Nutrition 0.000 title claims abstract description 75
- 239000003337 fertilizer Substances 0.000 title claims abstract description 35
- 238000013270 controlled release Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 44
- 239000000203 mixture Substances 0.000 claims abstract description 38
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 19
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 229920001732 Lignosulfonate Polymers 0.000 claims description 15
- 238000005469 granulation Methods 0.000 claims description 13
- 230000003179 granulation Effects 0.000 claims description 13
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 12
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 10
- 229920005610 lignin Polymers 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 238000005336 cracking Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 235000015097 nutrients Nutrition 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 2
- 239000011574 phosphorus Substances 0.000 abstract description 2
- 102000004190 Enzymes Human genes 0.000 abstract 1
- 108090000790 Enzymes Proteins 0.000 abstract 1
- 230000032683 aging Effects 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229910019142 PO4 Inorganic materials 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 description 1
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 239000002426 superphosphate Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A process for preparing a controlled release ammonium phosphate fertilizer comprises cracking, pulverizing, blending, aging, drying, and adding a release controlling material or adding a release controlling material to ammonium phosphate slurry during the preparation process. Ammonium hydrogen phosphate powder optionally, sulfuric acid is added to the mixture of the release controlling material and the ammonium phosphate slurry or powder to acidify the mixture. In the method, the controlled-release material is combined with ammonium phosphate through chemical bonding to control the release of nitrogen and phosphorus nutrients, improve the use efficiency of the ammonium phosphate controlled-release fertilizer and prolong the fertilizing effect. Furthermore, the manufacturing equipment of the present invention is substantially the same as the equipment manufacturing of conventional ammonium phosphate fertilizers, and easily releases raw materials such as release control materials, without requiring additional manufacturing and product costs. The enzyme of the present invention.
Description
Technical Field
The present invention relates to a method for preparing a phosphate ammonium fertilizer, and more particularly, to a method for preparing a controlled release phosphate ammonium fertilizer that continuously and efficiently releases nutrients to soil.
Background
Ammonium phosphate is the main compound fertilizer of nitrogen and phosphorus, is two basic nutrients of plants, and accounts for 58 percent of the market share of all phosphate fertilizers in the world. Ammonium phosphate is used as a base fertilizer or an additional fertilizer, and is more likely to be used as a main component of a mixed fertilizer or a complex fertilizer because ammonium phosphate has excellent compatibility to match with other different fertilizers. Ammonium phosphate and other phosphate fertilizers, such as superphosphate, nitrophosphate and calcium magnesium phosphate, have the fatal disadvantage that most of the phosphate is easily fixed in the soil and released too slowly or unusable. Therefore, phosphate fertilizers have low long-term efficiency and are not completely absorbed by plants, resulting in a low utilization rate of the phosphate fertilizer in the growing season of crops of 15-20%.
Disclosure of Invention
The present invention aims to overcome the above-mentioned disadvantages of the prior art and to provide a method for producing a controlled release ammonium phosphate fertilizer with high efficiency and low production cost. Reduces the product cost of the ammonium phosphate fertilizer and improves the use efficiency.
The technical scheme of the invention is as follows: the method comprises the following steps: and adding a release control material into the ammonium phosphate slurry, uniformly mixing the ammonium phosphate slurry and the release control material, and condensing the mixture of the ammonium phosphate slurry and the release control material to the water content of the mixture. On the basis of the dry weight of the ammonium phosphate slurry, 25 multiplied by 35% (W/W, based on the dry weight of the ammonium phosphate slurry) is achieved, and the concentrated mixture of the ammonium phosphate slurry and the release control material is granulated to obtain granular controlled-release ammonium phosphate fertilizer; sulfuric acid is further added to the mixture of ammonium phosphate and release control material to acidify the mixture prior to condensation; wherein the sulfuric acid is 1: 20% (W/W, based on dry weight of ammonium phosphate slurry); the release controlling material is selected from at least one of zeolite, montmorillonite, pillared montmorillonite, lignin and alkali lignin and lignosulfonate or lignosulfonate; the granulation method is selected from the group consisting of slurry granulation, spray granulation, and fluidized granulation.
The release controlling material is in a proportion of 3 x 35% (W/W, based on the weight of the ammonium phosphate powder) and the water is in a proportion of 3 x 40% (W/W, based on the weight of the ammonium phosphate powder).
The release controlling material is selected from at least one of acidified zeolites, acidified montmorillonite, acidified pillared montmorillonite, and acidified lignin of acidified lignin sulfonate. A lignosulfonate.
The method comprises the following steps: adding the controlled release material and water to the ammonium phosphate powder, uniformly mixing the ammonium phosphate powder, the controlled release material and the water to form a mixture, crushing the mixture, activating the components in the mixture by piling, and drying the activated mixture to realize mixing. A controlled release ammonium phosphate fertilizer.
The invention has the beneficial effects that: reduces the product cost of the ammonium phosphate fertilizer and improves the use efficiency. Additional new manufacturing equipment is not required, thereby economically preparing the fertilizer.
Detailed Description
The preparation method of the controlled release ammonium phosphate fertilizer comprises the following steps: in the preparation process or the addition process, the ammonium phosphate slurry is cracked, crushed, mixed, aged and dried, and a release control material is added into the ammonium phosphate slurry. Drying the release controlling material in the ammonium phosphate product. The detailed description of the method is as follows: (1) adding a cracking release control material before concentrating the ammonium phosphate slurry at a ratio of 3: 35% (W/W, based on dry weight of the ammonium phosphate slurry); uniformly mixing the ammonium phosphate slurry and the release control material into a mixture; condensing the mixture of ammonium phosphate slurry and release control material until the water content of the mixture is reduced to 25 x 35%; and granulating the concentrated mixture of ammonium phosphate slurry and the release control material to obtain the granular ammonium phosphate fertilizer, wherein the beneficiation method comprises slurry granulation, spray granulation or fluidized particle. (2) Adding a cracking release control material before concentrating the ammonium phosphate slurry at a ratio of 3: 35% (w/w, based on dry weight of the ammonium phosphate slurry); uniformly mixing the ammonium phosphate slurry and the release control material into a mixture; adding sulfuric acid to the mixture in an acidification ratio of 1-20% (W/W, based on dry weight of ammonium phosphate slurry); condensing the acidified mixture of ammonium phosphate slurry and release control material until the water content of the mixture is reduced to 25 x 35%; granulating the concentrated mixture of ammonium phosphate slurry and the release controlling material to obtain a granulated ammonium phosphate fertilizer, wherein the granulation method is selected from the following methods: slurry granulation, spray granulation or fluidized particles; and (6) ending. (3) Adding a cracking release controlling material and water to the dry ammonium phosphate powder, wherein the cracking release controlling material is in a ratio of 3: 35% (W/W, based on dry weight of the ammonium phosphate powder) and the water is in a ratio of 3: 40% (W/W, based on dry weight of the ammonium phosphate powder); uniformly mixing ammonium phosphate powder, a release control material and water into a mixture; thoroughly crushing the mixture; activating the components in the mixture by stacking; drying the activated mixture to achieve a controlled release ammonium phosphate fertilizer. (4) A cracking release controlling material and water are added to the dry ammonium phosphate powder, wherein the proportion of cracking release controlling material is 3: 35% (W/W based on dry weight of ammonium phosphate powder) and the proportion of water is 3: 40% (W/W based on dry weight of ammonium phosphate powder). Uniformly mixing ammonium phosphate powder, a release control material and water into a mixture; thoroughly crushing the mixture; acidifying the mixture in a proportion of 1-20% (W/W, based on dry weight of ammonium phosphate powder) by adding sulfuric acid to the mixture; cooking the mixture in an activation chamber to form a pulp fertilizer; and drying the pulp fertilizer to realize the controlled release of the ammonium phosphate fertilizer. The release controlling material is selected from at least one of zeolite, montmorillonite, pillared montmorillonite, and lignin containing alkali lignin and lignosulfonate or lignosulfonate. The release controlling material used in the methods (3) and (4) having an acidifying action is at least one selected from the group consisting of acidified zeolites, acidified montmorillonites, acidified pillared montmorillonites, acidified alkali lignified lignins and acidified lignosulfonates. TE or lignosulfonate. The release controlling material is pulverized into particles of 0.2-0.04 mm.
Claims (4)
1. A method of preparing a controlled release ammonium phosphate fertilizer, characterized in that: the method comprises the following steps: and adding a release control material into the ammonium phosphate slurry, uniformly mixing the ammonium phosphate slurry and the release control material, and condensing the mixture of the ammonium phosphate slurry and the release control material to the water content of the mixture. On the basis of the dry weight of the ammonium phosphate slurry, 25 multiplied by 35% (W/W, based on the dry weight of the ammonium phosphate slurry) is achieved, and the concentrated mixture of the ammonium phosphate slurry and the release control material is granulated to obtain granular controlled-release ammonium phosphate fertilizer; sulfuric acid is further added to the mixture of ammonium phosphate and release control material to acidify the mixture prior to condensation; wherein the sulfuric acid is 1: 20% (W/W, based on dry weight of ammonium phosphate slurry); the release controlling material is selected from at least one of zeolite, montmorillonite, pillared montmorillonite, lignin and alkali lignin and lignosulfonate or lignosulfonate; the granulation method is selected from the group consisting of slurry granulation, spray granulation, and fluidized granulation.
2. The method of claim 1, wherein the controlled release ammonium phosphate fertilizer comprises: the release controlling material is in a proportion of 3 x 35% (W/W, based on the weight of the ammonium phosphate powder) and the water is in a proportion of 3 x 40% (W/W, based on the weight of the ammonium phosphate powder).
3. The method of claim 1, wherein the controlled release ammonium phosphate fertilizer comprises: the release controlling material is selected from at least one of acidified zeolites, acidified montmorillonite, acidified pillared montmorillonite, and acidified lignin of acidified lignin sulfonate. A lignosulfonate.
4. The method of claim 1, wherein the controlled release ammonium phosphate fertilizer comprises: the method comprises the following steps: adding the controlled release material and water to the ammonium phosphate powder, uniformly mixing the ammonium phosphate powder, the controlled release material and the water to form a mixture, crushing the mixture, activating the components in the mixture by piling, and drying the activated mixture to realize mixing. A controlled release ammonium phosphate fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023804.8A CN110862275A (en) | 2018-08-27 | 2018-08-27 | Method for preparing controlled-release ammonium phosphate fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023804.8A CN110862275A (en) | 2018-08-27 | 2018-08-27 | Method for preparing controlled-release ammonium phosphate fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110862275A true CN110862275A (en) | 2020-03-06 |
Family
ID=69651573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811023804.8A Pending CN110862275A (en) | 2018-08-27 | 2018-08-27 | Method for preparing controlled-release ammonium phosphate fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110862275A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1275548A (en) * | 2000-06-14 | 2000-12-06 | 华南农业大学 | Acid-saving high-efficient phosphatic manure production method |
| CN1396144A (en) * | 2002-07-05 | 2003-02-12 | 华南农业大学 | Process for preparing efficient ammonium phosphate |
| CN104387161A (en) * | 2014-10-24 | 2015-03-04 | 成都新柯力化工科技有限公司 | Phosphate fertilizer controllably released through pH-sensitive material and preparation method of phosphate fertilizer |
-
2018
- 2018-08-27 CN CN201811023804.8A patent/CN110862275A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1275548A (en) * | 2000-06-14 | 2000-12-06 | 华南农业大学 | Acid-saving high-efficient phosphatic manure production method |
| CN1396144A (en) * | 2002-07-05 | 2003-02-12 | 华南农业大学 | Process for preparing efficient ammonium phosphate |
| CN104387161A (en) * | 2014-10-24 | 2015-03-04 | 成都新柯力化工科技有限公司 | Phosphate fertilizer controllably released through pH-sensitive material and preparation method of phosphate fertilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200306 |
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| WD01 | Invention patent application deemed withdrawn after publication |