CN105061051A - Nitro fertilizer anti-hardening agent and application method thereof - Google Patents
Nitro fertilizer anti-hardening agent and application method thereof Download PDFInfo
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- CN105061051A CN105061051A CN201510484474.2A CN201510484474A CN105061051A CN 105061051 A CN105061051 A CN 105061051A CN 201510484474 A CN201510484474 A CN 201510484474A CN 105061051 A CN105061051 A CN 105061051A
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- hardening agent
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Abstract
The present invention discloses a nitro fertilizer anti-hardening agent and an application method thereof, and belongs to the technical field of fertilizers. The nitro fertilizer anti-hardening agent comprises the following components in parts by weight: 0.5-10 parts of double-component polyurethane, and 0.001-1 part of a curing catalyst. The application method of the nitro fertilizer anti-hardening agent comprises: an anti-hardening function is achieved based on a later stage of compound fertilizer production by coating polyurethane on surfaces of particles to form films on the surfaces of the particles, so that the quality of a product is guaranteed, and a slot is guaranteed to be not blocked by mechanical application; use of anti-hardening powder and anti-hardening oil is reduced; a secondary contamination problem caused by improper use is avoided; the coating material is low in cost; the process is simple; the operations are convenient; and the nitro fertilizer anti-hardening agent is environmentally friendly, and the coating material can be used as a fertilizer nutrient.
Description
Technical field
The invention belongs to technical field of fertilizers, be specifically related to a kind of nitro fertilizer anti hardening agent and application method thereof.
Background technology
Along with the development of modern agricultural technology, the area of cash crop is excessive, increasing to the demand of readily avaiable fertilizer and nitro fertilizer, but nitro fertilizer lumps due to moisture absorption in production process and transport handling process, and impact is used.Current solution nitro method is unanimous on the whole with urine substrate junction method, how to apply or machinery oil direction from inert material, namely harden powder and anti-compaction oil is put, eliminate intergranular Van der Waals force, but effect is all undesirable, usually after the placement of 1-2 month, particle surface will powder delivery variable color, and anti-compaction oil is difficult to degraded in soil, can cause secondary pollution to environment.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of nitro fertilizer anti hardening agent and application method thereof.The present invention is on the basis of production of compound fertilizer back segment, by at SiC p surface plating urethane, film is formed at particle surface, isolated particle surface contact forms salt bridge, and rate of moisture absorption significantly reduces, thus has anti-compaction effect, can place long-time and do not occur hardening in transhipment, and do not affect and leach, raw material itself is environmental protection, degradable.For achieving the above object, present invention employs following technical proposals:
A kind of nitro fertilizer anti hardening agent, counts by weight, comprises following component: dual-component polyurethane 0.5-10 part, curing catalysts 0.001-1 part.
Preferably, count by weight, comprise following component: dual-component polyurethane 0.5-5 part, curing catalysts 0.005-0.5 part.
Preferably, count by weight, comprise following component: dual-component polyurethane 1 part, curing catalysts 0.01-0.1 part.
Preferably, described curing catalysts be amines catalyst as N, N-dimethylcyclohexylamine, trolamine or organo-metallic catalyst, as dibutyltin dilaurate, but be not limited to above-mentioned selection.
Preferably, described dual-component polyurethane is the urethane of the different molecular weight synthesized by different amount ratios by isocyanic ester and polyether glycol, and the weight ratio of described isocyanic ester and polyether glycol is 2.5 ~ 7:7.5 ~ 2.5.
Preferably, the weight ratio of described isocyanic ester and polyether glycol is 3.8:6.2.
Present invention also offers the application method of described nitro fertilizer anti hardening agent, comprise the following steps:
(1) nitro fertilizer temperature is remained on 60-80 DEG C;
(2) after adding anti hardening agent, coating heating 3-20 minute in rotary drum.
Preferably, the waste heat of fertilizer is utilized to make temperature remain on 60-80 DEG C after nitro fertilizer completes granulation in described step (1).
Preferably, in described step (1), nitro fertilizer temperature remains on 70 DEG C.
Preferably, after adding anti hardening agent in described step (1), coating heating 5-10 minute in rotary drum.
Preferably, the addition of described anti hardening agent accounts for the 0.3%-2% of fertilizer gross weight.
Preferably, the addition of described anti hardening agent accounts for 0.5% of fertilizer gross weight.
Compared with prior art, the present invention has following beneficial effect:
1, anti-compaction is effective.The present invention is on production of compound fertilizer later stage basis, and by SiC p surface plating urethane, in particle surface film forming, have anti-compaction effect, products quality guarantee, the machine of guarantee cannot not execute stifledly groove.
2, safety and environmental protection, technique are simple, easy to operate.Safety and environmental protection, replaces the use of anti-compaction powder and anti-plate machinery oil, itself be degradable raw material to soil toxicological harmless, avoid using the problem causing improper secondary pollution, technique is simple, easy to operate.
3, coating material itself can be used as fertilizer nutrient, can proper extension fertilizer efficiency according to coating thickness.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated, but the scope of protection of present invention is not limited to the scope that embodiment is expressed.
Embodiment 1
Choose 1 kilogram of nitro compound fertilizer material, in drum device, be heated to 65 degree, select urethane 1 part, urethane is that 3.8:6.2 synthesizes by isocyanic ester and polyether glycol by weight, curing catalysts 0.05 part, feeding intake feeds intake by 0.5% of material, applies heating 10 minutes in rotary drum.The rate that hardens after coating (monolithic is less than 2cm)≤5%.
Embodiment 2
Choose 1 kilogram of nitro compound fertilizer material, in drum device, be heated to 70 degree, select urethane 1 part, urethane is that 3.8:6.2 synthesizes by isocyanic ester and polyether glycol by weight, curing catalysts 0.05 part, feed intake and to feed intake by 1% of material, in rotary drum, apply heating 10 minutes.The rate that hardens after coating (monolithic is less than 2cm)≤5%.
Embodiment 3
Choose 1 kilogram of nitro compound fertilizer material, in drum device, be heated to 75 degree, select urethane 1 part, urethane is that 4.5:6.5 synthesizes by isocyanic ester and polyether glycol by weight, curing catalysts 0.08 part, feed intake and to feed intake by 0.5% of material, in rotary drum, apply heating 8 minutes.The rate that hardens after coating (monolithic is less than 2cm)≤5%.
Embodiment 4
Choose 1 kilogram of nitro compound fertilizer material, in drum device, be heated to 70 degree, select urethane 1 part, urethane is that 4.5:6.5 synthesizes by isocyanic ester and polyether glycol by weight, and curing catalysts 0.1 part, feeds intake, feed intake by 1% of material, in rotary drum, apply heating 8 minutes.The rate that hardens after coating (monolithic is less than 2cm)≤5%.
Embodiment 5
Choose 1 kilogram of nitro compound fertilizer material, in drum device, be heated to 75 degree, select urethane 1 part, urethane is that 3.0:6.5 synthesizes by isocyanic ester and polyether glycol by weight, and curing catalysts 0.1 part, feeds intake, feed intake by 0.5% of material, in rotary drum, apply heating 5 minutes.The rate that hardens after coating (monolithic is less than 2cm)≤5%.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also change above-mentioned embodiment and revise.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection domain of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this specification sheets, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (10)
1. a nitro fertilizer anti hardening agent, is characterized in that, counts by weight, comprises following component: dual-component polyurethane 0.5-10 part, curing catalysts 0.001-1 part.
2. a kind of nitro fertilizer anti hardening agent according to claim 1, is characterized in that, count by weight, comprise following component: dual-component polyurethane 0.5-5 part, curing catalysts 0.005-0.5 part.
3. a kind of nitro fertilizer anti hardening agent according to claim 2, is characterized in that, count by weight, comprise following component: dual-component polyurethane 1 part, curing catalysts 0.01-0.1 part.
4. a kind of nitro fertilizer anti hardening agent according to claim 1-3, it is characterized in that, described dual-component polyurethane is the urethane of the different molecular weight synthesized by different amount ratios by isocyanic ester and polyether glycol, and the weight ratio of described isocyanic ester and polyether glycol is 2.5 ~ 7:7.5 ~ 2.5.
5. a kind of nitro fertilizer anti hardening agent according to claim 4, it is characterized in that, the weight ratio of described isocyanic ester and polyether glycol is 3.8:6.2.
6. a kind of nitro fertilizer anti hardening agent according to claim 1-5, it is characterized in that, described curing catalysts is amines catalyst or organo-metallic catalyst:
Wherein amines catalyst is N, N-dimethylcyclohexylamine or trolamine;
Wherein organo-metallic catalyst is dibutyltin dilaurate.
7. the application method of a kind of nitro fertilizer anti hardening agent described in any one of claim 1-6, is characterized in that, comprise the following steps:
(1) nitro fertilizer temperature is remained on 60-80 DEG C;
(2) after adding anti hardening agent, coating heating 3-20 minute in rotary drum.
8. the application method of a kind of nitro fertilizer anti hardening agent according to claim 7, is characterized in that, after adding anti hardening agent in described step (2), and coating heating 5-10 minute in rotary drum.
9. the application method of a kind of nitro fertilizer anti hardening agent according to claim 7, it is characterized in that, the addition of described anti hardening agent accounts for the 0.3%-2% of fertilizer gross weight.
10. the application method of a kind of nitro fertilizer anti hardening agent according to claim 9, it is characterized in that, the addition of described anti hardening agent accounts for 0.5% of fertilizer gross weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510484474.2A CN105061051A (en) | 2015-08-10 | 2015-08-10 | Nitro fertilizer anti-hardening agent and application method thereof |
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| CN201510484474.2A CN105061051A (en) | 2015-08-10 | 2015-08-10 | Nitro fertilizer anti-hardening agent and application method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101614A (en) * | 2016-11-24 | 2018-06-01 | 深圳市芭田生态工程股份有限公司 | Coating controlled-release fertilizer and preparation method thereof |
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| CN103665309A (en) * | 2013-12-09 | 2014-03-26 | 山东一诺威聚氨酯股份有限公司 | Preparation method of polyurethane elastomer composition for sustained release of fertilizer |
| CN104609983A (en) * | 2015-02-05 | 2015-05-13 | 北京市农林科学院 | Polymer coat and coated controlled-release fertilizer using polymer coat |
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2015
- 2015-08-10 CN CN201510484474.2A patent/CN105061051A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0013380A1 (en) * | 1978-12-18 | 1980-07-23 | E.I. Du Pont De Nemours And Company | Polyisocyanate compositions, polyurethane prepolymers and their use |
| CN1431275A (en) * | 2003-01-21 | 2003-07-23 | 武汉理工大学 | Multi-functional macromolecule composite material for sand-fixation vegetation and its preparing method |
| CN1948395A (en) * | 2006-10-11 | 2007-04-18 | 武汉理工大学 | Water retaining fertilizer retaining multifunction polymer composite material and its preparation method |
| KR20100004615A (en) * | 2008-07-04 | 2010-01-13 | 주식회사 한진산업 | Granular fertilizer coating agent composition containing fish oil and preparation thereof |
| CN101648837A (en) * | 2009-09-11 | 2010-02-17 | 中国海洋石油总公司 | Polyurethane filmcoated controlled release fertilizer and preparation method thereof |
| CN102786358A (en) * | 2012-08-29 | 2012-11-21 | 湖北富邦科技股份有限公司 | Water-soluble anti-caking agent and preparation method thereof |
| CN103265684A (en) * | 2013-05-24 | 2013-08-28 | 淄博德信联邦化学工业有限公司 | Polyurethane resin coating material, and preparation process and application thereof |
| CN103665309A (en) * | 2013-12-09 | 2014-03-26 | 山东一诺威聚氨酯股份有限公司 | Preparation method of polyurethane elastomer composition for sustained release of fertilizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108101614A (en) * | 2016-11-24 | 2018-06-01 | 深圳市芭田生态工程股份有限公司 | Coating controlled-release fertilizer and preparation method thereof |
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Application publication date: 20151118 |