CN102863275A - Sustained or controlled-release potash fertilizer and preparation method thereof - Google Patents
Sustained or controlled-release potash fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN102863275A CN102863275A CN2011101873444A CN201110187344A CN102863275A CN 102863275 A CN102863275 A CN 102863275A CN 2011101873444 A CN2011101873444 A CN 2011101873444A CN 201110187344 A CN201110187344 A CN 201110187344A CN 102863275 A CN102863275 A CN 102863275A
- Authority
- CN
- China
- Prior art keywords
- fertilizer
- coating
- fertile core
- release
- sustained
- 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
Links
Landscapes
- Fertilizers (AREA)
Abstract
The invention relates to a sustained or controlled-release potash fertilizer and a preparation method thereof, belonging to the technical field of sustained or controlled-release fertilizers. The sustained or controlled-release potash fertilizer disclosed herein comprises a coating and a fertilizer core, wherein the fertilizer core is prepared by extruding and granulating zeolite powder and potassic fertilizers, and the coating is made from an environment friendly material. The preparation method of the sustained or controlled-release potash fertilizer is characterized by carrying out physical coating on the surface of the fertilizer core, wherein the preparation technology of the fertilizer core adopts one of the technologies of extruding granulation or tumbling granulation or disc granulation, and the technology of the coating adopts the method of roller spraying coating. The technology of the coating comprises the following steps: dissolving 100 parts of environment friendly material which accounts for 1-3wt% of the fertilizer core in 100-1000 parts of organic solvent, adding an inoranic membrane conditioner and a plasticizer in the solvent, after mixing and dissolving, carrying out spraying coating on the outer surface of the fertilizer core to form a smooth, continuous and uniform coating. According to the invention, the fertilizer has good sustained release effect, low cost of the coating, and wide application range, and the fertilizer can reduce the loss of potash fertilizers in the soil, raise the utilization rate of potash fertilizers, and reduce the amount of potash fertilizers per mu.
Description
Technical field
The present invention relates to the slow controlled-release fertilizer in the agriculture field, is exactly novel slow controlled-release fertilizer of a kind of coating and Adsorption Phase combination and preparation method thereof specifically.
Technical background
The research of sustained-controll-release fertiliser has had the history in 80 years, but few for going back of potash fertilizer sustained-controll-release fertiliser research.It is exactly by soil particle and the absorption of other electronegative particle that Potassium Fertilizer has after in the soil two kinds of loss access a kind of, another be leached underground, the potash fertilizer of dual mode loss is substantially at 30%-40%, adopt the mode of coating and employing zeolite powder and the common granulation of potash fertilizer, can reduce the leaching speed of potassium element, and zeolite powder has specific surface area and reaches greater than 700 times of space structures of self surface-area, thereby absorption that can be a large amount of part potassium element reduces the absorption of the plain and electronegative soil particle of potassium, utilize the coating structure can stop the potassium element dissolving of a part, thereby prolonged the validity period of potassium element, made the utilization ratio that can improve in this way potash fertilizer reach 60%-75%.
Summary of the invention
The object of the present invention is to provide that a kind of slow controlled-release effect is good, environmental friendliness, novel slow controlled-release fertilizer that the low use range of coating cost is wide and preparation method thereof.
To achieve these goals, technical scheme of the present invention is: be comprised of coating and fertile core, fertile core is the potassic fertilizer that contains that has added zeolite powder, and coated fertilizer is environment-friendly material.
Described potash fertilizer is one of Repone K or vitriolate of tartar or combination, slow controlled-release fertilizer is characterized in that: be comprised of coating and fertile core, fertile core is for adding the potassic fertilizer that contains of zeolite powder, coating is the 1%--3% of fertile core weight, coated fertilizer is Mierocrystalline cellulose and derivative or starch and derivative thereof in polyvinyl alcohol, the Biological resources macromolecular material, and fibrous bundle and derivative thereof are ethyl cellulose, butyl cellulose or cellulose acetate in the wherein said biogenic macromolecular material; Starch and derivative thereof are hydroxypropylated starch or starch and acetate ethylene copolymer.The preparation method of novel slow controlled-release fertilizer utilizes zeolite powder and the fertilizer that contains the potassium element to make fertile core through extruder grain, carries out the physical package quilt in fertile core outside again, and the preparation technology of fertile core adopts extruder grain and one of cylinder granulation or disc granulation; Coating process adopts cylinder spraying film-coating technique, be specially: the coated fertilizer that is the 1%--3% of fertile core weight with 100 parts of consumptions is dissolved in 100-1000 part organic solvent, in described solvent, add 3-10 part mineral membrane amendment, add again 1-3 part softening agent, after miscible more fertile core outer surface spray coatedly, form coating smooth, continuous, homogeneous; Described organic solvent is a kind of or combination in ethanol, acetone, the toluene; Described mineral membrane amendment is talcum powder, calcium carbonate, diatomite one or a combination set of; Described softening agent is one of polyoxyethylene glycol, ethylene glycol or combination.Utilize the potash fertilizer of extruding or cylinder or disc granulation, be sprayed in the cylinder according to the coating agent of the 1%--3% of fertile core weight, the time of fertile core in cylinder is 10-15 minute.
Principle of the present invention is:
Outside surface to fertile core carries out the physical package quilt, quick dissolving after can stoping fertile core in being manured into soil, make the slow stripping coated fertilizer of fertile core, fertile core is dissolved fully discharge postponement 20-70 days, thereby can improve the utilization ratio of potash fertilizer, because fertile core is also with certain zeolite powder granulation, so adsorbed by zeolite powder with regard to some potassium element in the process of potassium element dissolving, the negative charge that has reduced in potassium element and the soil produces absorption.Preserve a large amount of potassium elements by crop utilization, realize the dissolution rate of control fertilizer, its regulation of fertilizer requirement with crop is matched, realize that potash fertilizer is in the control release of crop in the time of infertility.
Coated fertilizer selection environment friendly materials, sustained-controll-release fertiliser with tradition employing difficult degradation macromolecular compound coating, can prevent the respective environment pollution that coated fertilizer produces in degradation process, the environment-friendly material that coated fertilizer of the present invention is selected can be degraded more than 80% or all 3 months to 1 year time degraded, in coated fertilizer, add inorganic conditioner, can overcome on the one hand the adhesion phenomenon in the coating process, can make on the other hand coated fertilizer produce microvoid, thus the dissolution rate of control fertilizer; The adding softening agent can increase plasticity and the toughness of film.Make coating more complete.
Compared with prior art, advantage of the present invention and positively effect are as follows:
1 slow controlled-release effect is good, and slow controlled-release fertilizer of the present invention is with zeolite powder and potash fertilizer granulation, carries out coating on the potash fertilizer surface of granulation again, the advantage reasonable combination of coating potash fertilizer with the slow controlled-release fertilizer that utilizes zeolite powder absorption, realizes having complementary advantages.Fertile core dissolving release rate is slow, and the present invention carries out coating to fertile wicking surface, makes the fully dissolving of fertile core discharge postponement 20-70 days.Reduce the loss of fertilizer.Improve the utilization ratio of potash fertilizer up to 60%-75%.
2. has eco-friendly characteristics coated fertilizer selection environment of the present invention friendly materials, adopt difficult degradation polymer coated fertilizer with tradition, can prevent the respective environment pollution that coated fertilizer produces in degradation process, and can degrade more than 80% 3-12 month time.
3. the coating cost is low, than other employing coated with resin or the cost low 50% of sulfur coating.
4. can save the consumption of potash fertilizer in agricultural application, in the identical situation of output, can save the 20%-30% Potassium Fertilizer, can be the potash fertilizer of the few import 20% of China every year, and that will be to produce appreciable economic benefit.
5. the present invention is cheap, and is safe and effective, uses flexibly, simple and easy to operate, promotes easily.
Embodiment
Specific embodiment 1:
Wrap the potassic fertilizer that contains of coated with cellulose acetate
The production technique of fertile core: adopt extruder grain, with zeolite powder and vitriolate of tartar according to the granulation in Squeezinggranulator of 18%: 82% ratio.The mean diameter of fertilizer is finished product when 2-4mm.
Coating process: adopt the mode coating of spraying in the cylinder, concrete operations are: with 100 parts of environment-friendly material cellulose acetates that are used for coating be dissolved in 500 parts of methylene dichloride organic solvents wherein the consumption of cellulose acetate be 3% of fertile core weight; In the cellulose acetate dichloromethane solution, add again 3 parts of mineral membrane amendment talcum powder and 5 parts of calcium carbonate, and then add the softening agent ethylene glycol of 2 parts of total solution weight, and pour in the liquid holding rector after miscible, agitator is installed on the liquid holding rector, stir with 6 revolutions per seconds speed, spraying is coated.Form the uniform coating of smooth and continuous at fertile core outer surface after 15 minutes.
Its result is: coated fertilizer is 3% of fertile core weight, the fertilising after fertile core fully from coated fertilizer the time of stripping be 20-70 days, coating and zeolite powder acting in conjunction can reduce the loss of potassium element in soil, can improve potassium utilization rate 10%-30%.
Specific embodiment 2:
Bag is coated with the potassic fertilizer that contains of starch and acetate ethylene copolymer
The production technique of fertile core: adopt extruder grain, with zeolite powder and vitriolate of tartar according to the granulation in Squeezinggranulator of 10%: 90% ratio.The mean diameter of fertilizer is finished product when 2-4mm.
Coating process: adopt the mode coating of spraying in the cylinder, concrete operations are: with 50 parts of vinyl acetate between to for plastics and 50 parts of starch blendings, be dissolved in 1000 parts of acetone organic solvents, wherein starch and acetate ethylene copolymer consumption are that 2.5% of fertile core weight adds 3 parts of mineral membrane amendment talcum powder and 5 parts of silicon-dioxide again in described organic solvent, then at the softening agent ethylene glycol that adds 2 parts of total solution weight, pour in the liquid holding rector after miscible, agitator is installed on the liquid holding rector, stir with 6 revolutions per seconds speed, spraying is coated.Form the uniform coating of smooth and continuous at fertile core outer surface after 15 minutes.
Its result is: coated fertilizer is 2.5% of fertile core weight, the fertilising after fertile core fully from coated fertilizer the time of stripping be 20-70 days, coating and zeolite powder acting in conjunction can reduce the loss of potassium element in soil, can improve potassium utilization rate 10%-30%.
Claims (5)
1. slow controlled-release fertilizer is characterized in that: be comprised of coating and fertile core, fertile core is for adding the potassic fertilizer that contains of zeolite powder, coating is the 1%--3% of fertile core weight, coated fertilizer is Mierocrystalline cellulose and derivative or starch and derivative thereof in polyvinyl alcohol, the Biological resources macromolecular material, and Mierocrystalline cellulose and derivative thereof are ethyl cellulose, butyl cellulose or cellulose acetate in the wherein said biogenic macromolecular material; Starch and derivative thereof are hydroxypropylated starch or starch and acetate ethylene copolymer.
2. according to the described slow controlled-release fertilizer of claim 1, it is characterized in that: the described potassic fertilizer that contains is one of Repone K or vitriolate of tartar or the combination of the two.
3. according to the described slow controlled-release fertilizer of claim 1, it is characterized in that: the described zeolite powder that contains in the potassic fertilizer that contains zeolite powder is that fineness is at 120-180 purpose natural zeolite powder.
Zeolite powder is that the ratio of 10-50: 50-90 is mixed mutually with containing potassic fertilizer according to weight part ratio.
4. according to the preparation method of the described slow controlled-release fertilizer of claim 1, it is characterized in that: carry out the physical package quilt in fertile core outside, the preparation technology of fertile core adopts extruder grain and one of cylinder granulation or disc granulation;
Coating process adopts cylinder spraying film-coating technique, be specially: the coated fertilizer that is the 1%--3% of fertile core weight with 100 parts of consumptions is dissolved in 100-1000 part organic solvent, in described solvent, add 3-10 part mineral membrane amendment, add again 1-3 part softening agent, after miscible more fertile core outer surface spray coatedly, form coating smooth, continuous, homogeneous; Described organic solvent is one of ethanol, acetone, toluene or combination; Described mineral membrane amendment is talcum powder, calcium carbonate, diatomite one or a combination set of; Described softening agent is one of polyoxyethylene glycol, ethylene glycol or combination.
5. according to the preparation method of the described slow controlled-release fertilizer of claim 4, it is characterized in that: the potash fertilizer that utilizes extruding or cylinder or disc granulation, coating agent according to the 1%--3% of fertile core weight is sprayed in the cylinder, and the time of fertile core in cylinder is 10-15 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101873444A CN102863275A (en) | 2011-07-06 | 2011-07-06 | Sustained or controlled-release potash fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101873444A CN102863275A (en) | 2011-07-06 | 2011-07-06 | Sustained or controlled-release potash fertilizer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102863275A true CN102863275A (en) | 2013-01-09 |
Family
ID=47442446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101873444A Pending CN102863275A (en) | 2011-07-06 | 2011-07-06 | Sustained or controlled-release potash fertilizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102863275A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708963A (en) * | 2013-12-26 | 2014-04-09 | 大连汉枫集团有限公司 | Sulfur-coated controlled-release potassium fertilizer and manufacturing method thereof |
| CN105085081A (en) * | 2015-09-16 | 2015-11-25 | 福建师范大学 | Method for preparing controlled-release fertilizer from potassium feldspar |
| CN105294303A (en) * | 2015-11-20 | 2016-02-03 | 湖州师范学院 | Nonmetallic mineral-based urea coated slow-release fertilizer particle and preparation method thereof |
| CN105601420A (en) * | 2015-12-24 | 2016-05-25 | 成都新柯力化工科技有限公司 | Ion-permeable material-through controlled-release potassium fertilizer and preparation method thereof |
| WO2016099919A1 (en) * | 2014-12-18 | 2016-06-23 | E. I. Du Pont De Nemours And Company | Zeolite based agricultural composition |
| CN106365839A (en) * | 2016-08-30 | 2017-02-01 | 贵阳开磷化肥有限公司 | Special wheat controlled-release fertilizer and preparation method thereof |
| CN107500821A (en) * | 2017-06-29 | 2017-12-22 | 安徽强农牧业有限公司 | A kind of preparation method of the ventilative succulent plantation organic matter particle of moisturizing |
| CN111848273A (en) * | 2020-07-20 | 2020-10-30 | 中国农业科学院烟草研究所 | Coated potash fertilizer and preparation method and application thereof |
| CN114956888A (en) * | 2022-03-24 | 2022-08-30 | 吉林化工学院 | Water-retention controlled-release fertilizer and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040016276A1 (en) * | 2002-07-26 | 2004-01-29 | Wynnyk Nick P. | Controlled release fertilizer having improved mechanical handling durability and method for production thereof |
| CN1184173C (en) * | 2001-11-07 | 2005-01-12 | 中国科学院沈阳应用生态研究所 | Release controlling fertilizer and its prepn |
| CN1666971A (en) * | 2004-03-10 | 2005-09-14 | 中国科学院沈阳应用生态研究所 | Release control fertilizer and method for producing same |
| CN1247490C (en) * | 2003-04-09 | 2006-03-29 | 陈大顺 | Fertilizer coating composite, its making method and multicomponent coated granular fertilizer |
| CN101172913A (en) * | 2007-10-18 | 2008-05-07 | 中国农业大学 | Polymer coating controlled release fertilizer and method for producing the same |
| US20080214396A1 (en) * | 2004-06-04 | 2008-09-04 | Douglas John Best | Plant Treatment Agents |
-
2011
- 2011-07-06 CN CN2011101873444A patent/CN102863275A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184173C (en) * | 2001-11-07 | 2005-01-12 | 中国科学院沈阳应用生态研究所 | Release controlling fertilizer and its prepn |
| US20040016276A1 (en) * | 2002-07-26 | 2004-01-29 | Wynnyk Nick P. | Controlled release fertilizer having improved mechanical handling durability and method for production thereof |
| CN1247490C (en) * | 2003-04-09 | 2006-03-29 | 陈大顺 | Fertilizer coating composite, its making method and multicomponent coated granular fertilizer |
| CN1666971A (en) * | 2004-03-10 | 2005-09-14 | 中国科学院沈阳应用生态研究所 | Release control fertilizer and method for producing same |
| US20080214396A1 (en) * | 2004-06-04 | 2008-09-04 | Douglas John Best | Plant Treatment Agents |
| CN101172913A (en) * | 2007-10-18 | 2008-05-07 | 中国农业大学 | Polymer coating controlled release fertilizer and method for producing the same |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708963A (en) * | 2013-12-26 | 2014-04-09 | 大连汉枫集团有限公司 | Sulfur-coated controlled-release potassium fertilizer and manufacturing method thereof |
| CN103708963B (en) * | 2013-12-26 | 2016-03-23 | 大连汉枫集团有限公司 | Sulphur bag controlled-release fertilizer and manufacture method thereof |
| WO2016099919A1 (en) * | 2014-12-18 | 2016-06-23 | E. I. Du Pont De Nemours And Company | Zeolite based agricultural composition |
| CN105085081A (en) * | 2015-09-16 | 2015-11-25 | 福建师范大学 | Method for preparing controlled-release fertilizer from potassium feldspar |
| CN105294303A (en) * | 2015-11-20 | 2016-02-03 | 湖州师范学院 | Nonmetallic mineral-based urea coated slow-release fertilizer particle and preparation method thereof |
| CN105601420A (en) * | 2015-12-24 | 2016-05-25 | 成都新柯力化工科技有限公司 | Ion-permeable material-through controlled-release potassium fertilizer and preparation method thereof |
| CN106365839A (en) * | 2016-08-30 | 2017-02-01 | 贵阳开磷化肥有限公司 | Special wheat controlled-release fertilizer and preparation method thereof |
| CN107500821A (en) * | 2017-06-29 | 2017-12-22 | 安徽强农牧业有限公司 | A kind of preparation method of the ventilative succulent plantation organic matter particle of moisturizing |
| CN111848273A (en) * | 2020-07-20 | 2020-10-30 | 中国农业科学院烟草研究所 | Coated potash fertilizer and preparation method and application thereof |
| CN114956888A (en) * | 2022-03-24 | 2022-08-30 | 吉林化工学院 | Water-retention controlled-release fertilizer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102863275A (en) | Sustained or controlled-release potash fertilizer and preparation method thereof | |
| CN1184173C (en) | Release controlling fertilizer and its prepn | |
| CN102167647B (en) | Degradable composite coating material and preparation method and application thereof in controlled release fertilizer | |
| CN101857490B (en) | Slow/controlled-release compound fertilizer suitable for field crops | |
| CN101805224B (en) | Controlled release fertilizer with high content of biological carbon and preparation method thereof | |
| JP2016522150A (en) | Method for producing matrix-type granular composite fertilizer having delayed action and matrix-type granular composite fertilizer obtained by the method | |
| CN1307125C (en) | Release-controlled coated urea and its preparation method | |
| CN104163728A (en) | Double-coated long-acting controlled-release fertilizer and preparation method thereof | |
| CN106396886B (en) | Slow release fertilizer and preparation method thereof | |
| CN101973808A (en) | Starch coating material and application thereof in coated sustained/controlled release fertilizers | |
| CN102557810A (en) | Degradable slow-release fertilizer coating agent | |
| CN102311291B (en) | Resin coated sustained and controlled release fertilizer and preparation method thereof | |
| CN101172913A (en) | Polymer coating controlled release fertilizer and method for producing the same | |
| CN104496642A (en) | Lignin controlled-release fertilizer | |
| CN1211320C (en) | Film-coated slow-released fertilizer and preparation process thereof | |
| CN101823920A (en) | Preparation method for sustained-release and controlled release compound fertilizer suitable for field crop | |
| CN206396073U (en) | Biological charcoal slow-release fertilizer | |
| CN103193549A (en) | Degradable resin envelop slow-control fertilizer-releasing production process | |
| CN102976859A (en) | Production method of large-granule slow-release fertilizer | |
| CN1271016C (en) | Film coated control releasing lawn special fertilizer and its producing method | |
| CN101759498B (en) | Degradable controlled release fertilizer | |
| CN101786927B (en) | Anti-drought slow-release compound fertilizer and preparation method thereof | |
| CN103319228A (en) | Production method of biological controlled-release fertilizer | |
| CN101225010A (en) | Novel nano fertilizer | |
| CN102180739B (en) | Coating pulp for controlled release fertilizer and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130109 |