CN102731222B - Sustained and controlled release compound fertilizer and its preparation method - Google Patents
Sustained and controlled release compound fertilizer and its preparation method Download PDFInfo
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- CN102731222B CN102731222B CN201210182436.8A CN201210182436A CN102731222B CN 102731222 B CN102731222 B CN 102731222B CN 201210182436 A CN201210182436 A CN 201210182436A CN 102731222 B CN102731222 B CN 102731222B
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- speed mixer
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 72
- 238000013270 controlled release Methods 0.000 title claims abstract description 39
- 150000001875 compounds Chemical class 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 230000002459 sustained effect Effects 0.000 title abstract 5
- 238000013268 sustained release Methods 0.000 title abstract 5
- 235000015097 nutrients Nutrition 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 51
- 239000002245 particle Substances 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 238000013467 fragmentation Methods 0.000 claims description 8
- 238000006062 fragmentation reaction Methods 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 7
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000084 colloidal system Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 150000002632 lipids Chemical class 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 5
- 239000003094 microcapsule Substances 0.000 abstract 1
- 235000015816 nutrient absorption Nutrition 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 40
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 26
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 26
- 235000016709 nutrition Nutrition 0.000 description 26
- 230000035764 nutrition Effects 0.000 description 26
- 229910052698 phosphorus Inorganic materials 0.000 description 26
- 239000011574 phosphorus Substances 0.000 description 26
- 239000011591 potassium Substances 0.000 description 26
- 229910052700 potassium Inorganic materials 0.000 description 26
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 20
- 229910052757 nitrogen Inorganic materials 0.000 description 20
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 19
- 239000004202 carbamide Substances 0.000 description 17
- 235000019270 ammonium chloride Nutrition 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- DWNBOPVKNPVNQG-LURJTMIESA-N (2s)-4-hydroxy-2-(propylamino)butanoic acid Chemical class CCCN[C@H](C(O)=O)CCO DWNBOPVKNPVNQG-LURJTMIESA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 description 4
- 229910000389 calcium phosphate Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 235000019691 monocalcium phosphate Nutrition 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 3
- 230000004069 differentiation Effects 0.000 description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 description 3
- 239000006012 monoammonium phosphate Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 230000003872 anastomosis Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 235000021231 nutrient uptake Nutrition 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- -1 polyoxyethylene Polymers 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000006180 nutrition needs Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Fertilizers (AREA)
Abstract
The invention discloses a sustained and controlled release compound fertilizer and its preparation method. The compound fertilizer is a particulate fertilizer, the particulate fertilizer contains various nutrients, and surfaces of solid particles of each nutrient are coated with sustained and controlled release gummy films. The preparation method comprises the following steps: 1, respectively preparing the various nutrients: (1) crushing base raw materials of a single nutrient, (2) adding the crushed base raw materials to a high speed mixer, starting the high speed mixer, and adding the gummy material having a weight being 2-8% of the total weight of the base raw materials to the high speed mixer, fully stirring and mixing the base raw materials of the particles and the gummy material to form the gummy films on the surfaces of the base raw materials of the particles and make the nutrient have a microcapsule shape, and (3), respectively preparing other nutrients according to step (1) and step (2); and 2, preparing the sustained and controlled release compound fertilizer: sending the various microcapsule-shaped nutrients to a granulator, and granulating to mutually mix the various microcapsule-shaped nutrients and form the sustained and controlled release particulate fertilizer. According to the invention, the agreement of the nutrient release rate of the fertilizer and the plant nutrient absorption rate is improved, and the utilization rate is high.
Description
Technical field
The present invention relates to a kind of slow controlled release compound fertilizer, and the preparation method of this slow controlled release compound fertilizer.
Background technology
Slow controlled release compound fertilizer is the rate of release by controlling nutrient in fertilizer, extends release period, thereby makes fertilizer meet the nutritional needs of crop in whole vegetative period.
Existing slow controlled release compound fertilizer is that various nutrients are mixed to form to particle, and at particle surface parcel one deck resin molding, forms slow release-controlled film with this resin molding.After granulated fertilizer is manured into soil, soil moisture is postponed in the hole of release-controlled film and is entered, and dissolves the various nutrients that are wrapped, and these nutrients discharge by the micropore of slow release-controlled film again, supply with growing nutrient to plant.Because this composite fertilizer is by particle entirety coating, whole granulated fertilizer only has a slow release-controlled film, soil moisture enters after slow release-controlled film, all nutrients are dissolved, disengage, can only accomplish relative slow controlled release, cannot control respectively the multiple nutrient release rate in granulated fertilizer, also just can not realize the differentiation of all fertilizer releasing periods in granulated fertilizer, the anastomose property of fertilizer nutrient rate of release and plant nutrient uptake rate is poor, the utilization ratio of fertilizer is low, has the phenomenon of waste and environmental pollution.
Summary of the invention
The object of the invention is to: for above-mentioned the deficiencies in the prior art, providing a kind of can control completely to every kind of nutrient release rate in granulated fertilizer, realize the slow controlled release compound fertilizer of all fertilizer releasing period differentiation in granulated fertilizer, and the preparation method of this composite fertilizer.This slow controlled release compound fertilizer has improved utilization rate of fertilizer greatly, be more conducive to meet crop in each stage the demand to nutrient.
Above-mentioned technical purpose of the present invention is achieved through the following technical solutions: a kind of slow controlled release compound fertilizer, described composite fertilizer is granulated fertilizer, in granulated fertilizer, there is multiple nutrient, in described granulated fertilizer, the solia particle of every kind of nutrient is coated with the gluey film of the slow controlled release of one deck, is microencapsulated.
Described gluey film is at least one in resin, colloid, lipid.
The preparation method of above-mentioned slow controlled release compound fertilizer, comprises following order step:
1). prepare respectively various nutrients
1.. by the basic material fragmentation of single a kind of nutrient;
2.. broken basic material is added in high-speed mixer, start high-speed mixer; In high-speed mixer, add 2～8% colloidal material of basic material gross weight, make each particulate basic material and colloidal material fully stir, mix, each particulate basic material surface forms gluey film, is microencapsulated;
3.. according to step 1. and 2. prepare respectively the nutrient of other kind;
2). the slow controlled release compound fertilizer of preparation
The various nutrients of microencapsulated are sent in tablets press, started granulator granulation, the nutrient of each microencapsulated is mixed mutually, form slow controlled release granule fertilizer.
The fragmentation of step in is 1. that basic material is crushed to 40～200 orders.
The colloidal material of step in is 2. molten state or liquid state, and adition process slowly adds for continuing.
The step 2. temperature in high speed mixing machine is 60～80 DEG C.
2. the middle time of stirring is 3～5min to step.
The invention has the beneficial effects as follows: above-mentioned slow controlled release compound fertilizer is by dividing parcel slow release-controlled film to the every breeding in granulated fertilizer, reach the control completely to every kind of nutrient release rate in granulated fertilizer, realize the differentiation of all fertilizer releasing periods in granulated fertilizer, and then the anastomose property of raising fertilizer nutrient rate of release and plant nutrient uptake rate, avoid nutrient loss, utilization rate of fertilizer is high, reduces and has even stopped fertilizer waste and environmental pollution phenomenon.That preparation technology of the present invention has is simple, handled easily, production efficiency is high, cost is lower, the feature such as reliable and practical, is convenient to realize industrialized scale production.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present invention.
Embodiment
Referring to Fig. 1: the present invention is that particle diameter 1～4.75mm(particle diameter meets GB15063-2009 national standard and requires) the slow controlled release compound fertilizer of granule type, in granulated fertilizer 1, there are multiple nutrients 2, the gluey film 3 that is coated with the slow controlled release of one deck of each nutrient 2, each nutrient 2 is microencapsulated.The present invention makes by following embodiment, and following embodiment is several preferred version of the present invention, can not be with being construed as limiting protection scope of the present invention.
embodiment 1
In the particle of above-mentioned slow controlled release compound fertilizer, comprise nitrogen, phosphorus, potassium nutrition, concrete preparation method comprises following order step:
1). prepare respectively nitrogen, phosphorus, potassium nutrition
1.. by the basic material urea fragmentation of nitrogen nutrient, be crushed to 60～120 orders;
2.. broken urea is added in high-speed mixer, start high-speed mixer; Temperature in high-speed mixer is 66 DEG C, in high-speed mixer, continue slowly to add 3% colloidal material of (avoiding caking) urea gross weight, colloidal material is liquid, make each particulate urea and colloidal material fully stir, mix, churning time is 5min, the surface of each particulate urea forms gluey film, and each particulate urea is microencapsulated;
3.. 1. and 2. prepare respectively phosphorus nutrient (basic material is monoammonium phosphate, calcium superphosphate) and potassium nutrition (basic material is Repone K) according to step, form respectively phosphorus nutrient and the potassium nutrition of microencapsulated;
2). the slow controlled release compound fertilizer of preparation
The nitrogen nutrient of microencapsulated, phosphorus nutrient, potassium nutrition are sent in tablets press to technique granulation routinely; The nitrogen nutrient of microencapsulated, phosphorus nutrient, potassium nutrition mix mutually by means of materials such as the steam in tablets press, washings, propylhomoserins, and granulating, form the slow controlled release granule fertilizer of particle diameter 1～4.75mm; Granulated fertilizer is dried, can be packed after cooling.
Above-mentioned colloidal material is resin (as polyoxyethylene glycol), has certain permeability and water-soluble.
embodiment 2
In the particle of above-mentioned slow controlled release compound fertilizer, comprise nitrogen, phosphorus, potassium nutrition, concrete preparation method comprises following order step:
1). prepare respectively nitrogen, phosphorus, potassium nutrition
1.. by the basic material ammonium chloride fragmentation of nitrogen nutrient, be crushed to 80～120 orders;
2.. broken ammonium chloride is added in high-speed mixer, start high-speed mixer; Temperature in high-speed mixer is 73 DEG C, in high-speed mixer, continue slowly to add the 5% colloidal material-resin of (avoiding caking) urea gross weight, colloidal material is molten state, make each particulate ammonium chloride and colloidal material fully stir, mix, churning time is 4min, the surface of each particulate ammonium chloride forms gluey film, and each particulate ammonium chloride is microencapsulated;
3.. 1. and 2. prepare respectively phosphorus nutrient (basic material is calcium superphosphate) and potassium nutrition (basic material is Repone K, potassium sulfate) according to step, the colloidal material of phosphorus nutrient surface parcel is colloid, the colloidal material of potassium nutrition surface parcel is lipid, forms respectively phosphorus nutrient and the potassium nutrition of microencapsulated;
2). the slow controlled release compound fertilizer of preparation
The nitrogen nutrient of microencapsulated, phosphorus nutrient, potassium nutrition are sent in tablets press to technique granulation routinely; The nitrogen nutrient of microencapsulated, phosphorus nutrient, potassium nutrition mix mutually by means of materials such as the steam in tablets press, washings, propylhomoserins, and granulating, form the slow controlled release granule fertilizer of particle diameter 1～4.75mm; Granulated fertilizer is dried, can be packed after cooling.
embodiment 3
In the particle of above-mentioned slow controlled release compound fertilizer, comprise nitrogen, phosphorus, potassium nutrition, concrete preparation method comprises following order step:
1). prepare respectively nitrogen, phosphorus, potassium nutrition
1.. by the basic material urea fragmentation of nitrogen nutrient, be crushed to 60～100 orders;
2.. broken urea is added in high-speed mixer, start high-speed mixer; Temperature in high-speed mixer is 80 DEG C, in high-speed mixer, continue slowly to add 4% colloidal material-lipid and the colloid of (avoiding caking) urea gross weight, colloidal material is liquid, make each particulate urea and colloidal material fully stir, mix, churning time is 5min, the surface of each particulate urea forms gluey film, and each particulate urea is microencapsulated;
3.. 1. and 2. prepare respectively phosphorus nutrient (basic material is monoammonium phosphate, calcium superphosphate) and potassium nutrition (basic material is Repone K) according to step, the colloidal material of phosphorus nutrient and potassium nutrition surface parcel is resin, forms respectively phosphorus nutrient and the potassium nutrition of microencapsulated;
2). the slow controlled release compound fertilizer of preparation
The nitrogen nutrient of microencapsulated, phosphorus nutrient, potassium nutrition are sent in tablets press to technique granulation routinely; The nitrogen nutrient of microencapsulated, phosphorus nutrient, potassium nutrition mix mutually by means of materials such as the steam in tablets press, washings, propylhomoserins, and granulating, form the slow controlled release granule fertilizer of particle diameter 1～4.75mm; Granulated fertilizer is dried, can be packed after cooling.
embodiment 4
In the particle of above-mentioned slow controlled release compound fertilizer, comprise nitrogen, phosphorus, potassium nutrition, concrete preparation method comprises following order step:
1). prepare respectively nitrogen, phosphorus, potassium nutrition
1.. by the basic material urea of nitrogen nutrient and ammonium chloride fragmentation, be crushed to 120～185 orders;
2.. broken urea and ammonium chloride are added in high-speed mixer, start high-speed mixer; Temperature in high-speed mixer is 61 DEG C, in high-speed mixer, continue slowly to add 4% colloidal material of (avoiding caking) urea and ammonium chloride gross weight, colloidal material is liquid, make each particulate urea, ammonium chloride and colloidal material fully stir, mix, churning time is 3min, each particulate urea, ammonium chloride, and the surface of urea and ammonium chloride forms gluey film, is microencapsulated;
3.. 1. and 2. prepare respectively phosphorus nutrient (basic material is monoammonium phosphate, calcium superphosphate) and potassium nutrition (basic material is Repone K) according to step, form respectively phosphorus nutrient and the potassium nutrition of microencapsulated;
2). the slow controlled release compound fertilizer of preparation
The nitrogen nutrient of microencapsulated, phosphorus nutrient, potassium nutrition are sent in tablets press to technique granulation routinely; The nitrogen nutrient of microencapsulated, phosphorus nutrient, potassium nutrition mix mutually by means of materials such as the steam in tablets press, washings, propylhomoserins, and granulating, form the slow controlled release granule fertilizer of particle diameter 1～4.75mm; Granulated fertilizer is dried, can be packed after cooling.
Above-mentioned colloidal material is resin (as polyoxyethylene glycol), has certain permeability and water-soluble.
Claims (3)
1. a preparation method for slow controlled release compound fertilizer, described composite fertilizer is granulated fertilizer, has multiple nutrient in granulated fertilizer, the solia particle of every kind of nutrient is coated with the gluey film of the slow controlled release of one deck, is microencapsulated; It is characterized in that, described preparation method comprises following order step:
1). prepare respectively various nutrients
1.. by the basic material fragmentation of single a kind of nutrient;
2.. broken basic material is added in high-speed mixer, start high-speed mixer; Temperature in high-speed mixer is 60～80 DEG C, in high-speed mixer, continue slowly to add 2～8% colloidal material of basic material gross weight, this colloidal material is molten state or liquid state, make each particulate basic material and colloidal material fully stir, mix, the time of stirring is 3～5min, each particulate basic material surface forms gluey film, is microencapsulated;
3.. according to step 1. and 2. prepare respectively the nutrient of other kind;
2). the slow controlled release compound fertilizer of preparation
The various nutrients of microencapsulated are sent in tablets press, started granulator granulation, the nutrient of each microencapsulated is mixed mutually, form slow controlled release granule fertilizer.
2. the preparation method who delays according to claim 1 controlled release compound fertilizer, is characterized in that, described gluey film is at least one in resin, colloid, lipid.
3. the preparation method of slow controlled release compound fertilizer according to claim 1, is characterized in that, the fragmentation of step in is 1. that basic material is crushed to 40～200 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210182436.8A CN102731222B (en) | 2012-06-05 | 2012-06-05 | Sustained and controlled release compound fertilizer and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210182436.8A CN102731222B (en) | 2012-06-05 | 2012-06-05 | Sustained and controlled release compound fertilizer and its preparation method |
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| Publication Number | Publication Date |
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| CN102731222A CN102731222A (en) | 2012-10-17 |
| CN102731222B true CN102731222B (en) | 2014-07-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103360167A (en) * | 2013-07-23 | 2013-10-23 | 苏州仁成生物科技有限公司 | Selenium-enriched radish microcapsule foliar fertilizer |
| CN103524200A (en) * | 2013-08-27 | 2014-01-22 | 黄继军 | Fertilizer with controllable slow release function in full growth period as well as preparation method thereof |
| CN103910586B (en) * | 2014-04-28 | 2015-12-02 | 成都新柯力化工科技有限公司 | Slow-release fertilizer of a kind of applicable water-fertilizer integral and preparation method thereof |
| CN107337521A (en) * | 2017-07-17 | 2017-11-10 | 山东新朝阳作物营养有限公司 | A kind of long-acting Water soluble fertilizer of novel controlled release and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569773A (en) * | 2004-04-27 | 2005-01-26 | 山东农业大学 | Modified epoxy resin coated slow-release fertilizer with spray coating urea as bottom coat |
| CN1603288A (en) * | 2004-09-29 | 2005-04-06 | 山东农业大学 | Recycling thermoplastic resins into degradable film-coated controlled-release fertilizers |
| CN101205149A (en) * | 2007-12-17 | 2008-06-25 | 山东金正大生态工程股份有限公司 | Special control-release fertilizer for resin coated jujube and preparation thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693640A (en) * | 2009-09-15 | 2010-04-14 | 广东绿力生物科技有限公司 | Slow-release microcapsule fertilizer and manufacture method thereof |
| KR101133442B1 (en) * | 2010-01-12 | 2012-04-09 | 순천대학교 산학협력단 | A method of slow-release fertilizer by using natural zeolite for crops under mulching cultivation |
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2012
- 2012-06-05 CN CN201210182436.8A patent/CN102731222B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569773A (en) * | 2004-04-27 | 2005-01-26 | 山东农业大学 | Modified epoxy resin coated slow-release fertilizer with spray coating urea as bottom coat |
| CN1603288A (en) * | 2004-09-29 | 2005-04-06 | 山东农业大学 | Recycling thermoplastic resins into degradable film-coated controlled-release fertilizers |
| CN101205149A (en) * | 2007-12-17 | 2008-06-25 | 山东金正大生态工程股份有限公司 | Special control-release fertilizer for resin coated jujube and preparation thereof |
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Effective date of registration: 20240726 Address after: No. 55 Hedong Avenue, Economic Development Zone, Shehong City, Suining City, Sichuan Province 629200 Patentee after: SICHUAN MEIFENG CHEMICAL INDUSTRY Co.,Ltd. Country or region after: China Patentee after: Sichuan Meifeng Chemical Technology Co.,Ltd. Address before: No. 87, Xinyang street, Taihe Town, Shehong County, Suining City, Sichuan Province 629200 Patentee before: SICHUAN MEIFENG CHEMICAL INDUSTRY Co.,Ltd. Country or region before: China |