CN105503280A - Production method for granular compound mixed nitrogen fertilizer - Google Patents
Production method for granular compound mixed nitrogen fertilizer Download PDFInfo
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- CN105503280A CN105503280A CN201610044735.3A CN201610044735A CN105503280A CN 105503280 A CN105503280 A CN 105503280A CN 201610044735 A CN201610044735 A CN 201610044735A CN 105503280 A CN105503280 A CN 105503280A
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- fertilizer
- urea
- production method
- ammonium nitrate
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
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Abstract
The invention relates to a production method for a granular compound mixed nitrogen fertilizer. The production method comprises the following steps that 1, ammonium nitrate fertilizer granules or ammonium nitrate phosphate fertilizer granules are fluidified and preheated to 40 DEG C-60 DEG C; 2, liquid urea or urea melt liquid is sprayed to the preheated fertilizer granules and wrapped with the fluidified fertilizer granules to be granulated, and then the granular compound mixed nitrogen fertilizer is obtained. According to the granular compound mixed nitrogen fertilizer prepared through the production method, the three nitrogen sources of nitrate nitrogen, ammonium nitrogen and amidonitrogen are integrated into a whole, therefore, package, storage and transportation are convenient, the cost is lowered, and safe application of farmers is facilitated; meanwhile, the phenomenon that moisture absorption is prone to occur after common urea granules and ammonium nitrate granules are mixed is avoided.
Description
Technical field
The present invention relates to a kind of production method of particle compound nitrogenous fertilizer, belong to technical field of fertilizer production.
Background technology
At present, urea ammonium nitrate solution is as a kind of high-quality liquid fertilizer by increasing consumer acceptance in the world, and China is nitrogen fertilizer production big country, but the production of urea ammonium nitrate solution is little.The urea ammonium nitrate solution of 3 grades is generally had to sell in the international market, namely containing N28%, 30% and 32%.The salt eutectoid temperature that different content is corresponding different, is adapted at differing temps area and sells.Salt eutectoid temperature containing N28% is-18 DEG C, and the salt eutectoid temperature containing N30% is-10 DEG C, and the salt eutectoid temperature containing N32% is-2 DEG C.In urea ammonium nitrate solution, usual nitrate nitrogen content is 6.5 ~ 7.5%, and ammonium nitrogen content is 6.5 ~ 7.5%, and amidonitrogen content is 14 ~ 17%.Urea ammonium nitrate solution is generally used for topdresses, and three kinds of nitrogenous sources are integrated in one by it.Nitric nitrogen can provide instant nitrogenous source, absorbs fast for crop.An ammonium nitrogen part is absorbed immediately, and a part is adsorbed by soil colloid, thus extends fertilizer efficiency.Hydrolysis of urea needs the time, usually plays the effect extending fertilizer efficiency especially at low temperatures.
At present, the industrial process of urea ammonium nitrate Water soluble fertilizer is disclosed containing patent such as the Chinese patent literature CN201410292151.9 of the nitrogenous fertilizer of three kinds of forms by urea and ammonium nitrate production, this invention comprises: (1) controls ammonium nitrate solution pH value 4.0-5.0 and cools to 0-60 DEG C with urea soln mixture (2), and the pH value 6.5-7.5 controlling mixing solutions with the dust technology of mass concentration 25%-35% obtains UAN final mean annual increment solution.This invention, by technique adjustment in production, is easy to the pH value of control UAN solution between 6.5-7.5.But urea ammonium nitrate Water soluble fertilizer exists with liquid form.
Chinese patent literature CN201310135131.6 (publication number CN103193535A) discloses quick-acting slow-release compound fertilizer and preparation method thereof.In material, add the raw material containing nitric nitrogen, ammonium nitrogen, amidonitrogen, gas ammonia is directly led in the bed of material of rotary drum granulator, complete the ammonium process of ammonium nitrate phosphorus, control the quality that reaction generates urea nitrate.Effective proportioning of this quick-acting slow-release compound fertilizer, product nitrogen content by mass percentage: nitric nitrogen 2%-5%; Ammonium nitrogen 6%-9%; Amidonitrogen 7%-11%.Phosphorus, potassium nutrition content are determined according to different product proportionings.Its raw material ammonium nitrate phosphorus containing nitre state ammonia divides two portions to add, ammonium nitrate phosphorus containing nitric nitrogen 1%-3% is joined in the bed of material, cooler import 1-1.5 meters of are joined after all the other ammonium nitrate phosphorus containing nitric nitrogen 1%-2% dissolve, fertiliser granulates surface after drying and fines screening is wrapped up, makes product have available nitrogen shell.Slow-release nitrogen urea adds in solid mode, and as the master batch needed for granulating, is wrapped up layer by layer, make product have slow-release nitrogen kernel by the material containing other nutrient.Although this invention adopts the nitrogen containing three kinds of forms, the nitrogen content that this spraying method obtains various form in fertilizer is still very low.
At present, existing production technique and method ammonium nitrate urea production all can not produce the higher nitrogenous fertilizer of nitrogen content containing the method for three kinds of form particle nitrogen fertilizers.And although the nitrogen content of commercially available urea ammonium nitrate solution three kinds of forms can be satisfied the demand, but because its liquid form, main following problem: one, there is inconvenience greatly in packaging, storage, usual employing plastic tank packaging or storage, liquid fertilizer factory needs the storage tank storage made of glass reinforced plastic; Two, in transport, there is inconvenience, traffic requirements uses tank car; Three, very inconvenience in application, and urea ammonium nitrate solution uses improper easy burning seedling; Four, use cost is caused greatly to increase above; Five, ammonium nitrate product control problem.These problems add that current China water-fertilizer integral fraction of coverage degree is very low, apply fertilizer based on solid particulate fertilizer, limit applying of urea ammonium nitrate solution.
Therefore, agricultural, commodities market is badly in need of a kind of technique simple, instant packed, be easy to store and transport, cost is low, the product of the solid granular nitrogenous fertilizer of the urea that is beneficial to peasant's safely use and ammonium nitrate production and production method.
Summary of the invention
The problems such as the inconvenience that the urea ammonium nitrate fertilizer that the present invention is directed to liquid form in prior art exists in packaging, storage, transport etc.; a kind of method of producing particle compound nitrogenous fertilizer especially urea ammonium nitrate solid particulate compound nitrogenous fertilizer is provided; comprise nitric nitrogen, ammonium nitrogen and amidonitrogen three kinds of nitrogenous sources to combine together; both instant packed, storage and transport; reduce cost; be beneficial to again peasant's safely use, avoid again common urea particle and ammonium nitrate particle to mix easy moisture absorption problem simultaneously.
Technical scheme of the present invention is as follows:
A production method for particle compound nitrogenous fertilizer, comprises the steps:
(1) by ammonium nitrate fertilizer particle or ammonium nitrate phosphatic manure grain fluidized and be preheated to 40-60 DEG C;
(2) liquid area or urea melting liquid are sprayed on the fertiliser granulates of preheating, and the fertiliser granulates being wrapped in fluidisation carries out granulation, obtain particle compound nitrogenous fertilizer.
The another kind of scheme of the present invention is liquid ammonium nitrate coated urea particle, comprises the steps:
I () is grain fluidized and be preheated to 40-60 DEG C by urea fertilizer;
(ii) liquid ammonium nitrate is sprayed on the urea fertilizer particle of preheating, and the urea fertilizer particle being wrapped in fluidisation carries out granulation, obtain particle compound nitrogenous fertilizer.
According to the present invention, preferably, the whole process of particle compound nitrogen fertilizer production is carried out in granulating equipment; Preferred further, described granulating equipment is rotary drum, fluidized-bed or disk.
According to the present invention, preferably, step (2) or the spraying described in (ii) utilize single fluid shower nozzle or air atomizing two-fluid shower nozzle to spray;
Preferably, ventilate in granulating equipment in step (2) or (ii) spraying process.Ventilation can help liquid phase material to cool fast and be wrapped in solid particulate fertilizer surface, ensures the fluency of process of manufacture.
According to the present invention; the quality proportioning of liquid phase (liquid area, urea melting liquid or liquid ammonium nitrate) and solid phase (ammonium nitrate fertilizer particle, ammonium nitrate phosphatic manure particle or urea fertilizer particle) can be controlled according to crop and Production requirement, finally obtain the particle compound nitrogenous fertilizer having three kinds of different shape nitrogen contents concurrently.
According to the present invention, preferably, in step (2) or (ii) obtained particle compound nitrogenous fertilizer, urea quality percentage composition is 50-80%.
According to the present invention, preferably, in liquid phase material (liquid area, urea melting liquid or liquid ammonium nitrate), dyestuff is added, to change product appearance in step (2) or (ii), make product color beautiful, and improve identification.
According to the present invention, obtained particle compound nitrogenous fertilizer is entered finished product bin, and packaging warehouse-in.
Beneficial effect of the present invention:
1. the particle form of product particle compound nitrogenous fertilizer of the present invention makes to pack, transports, uses and there is not obstacle, and compares urea ammonium nitrate solution and greatly facilitate storage and transport, uses more convenient.
2. the present invention adopts a kind of fertilizer to wrap up another kind of fertilizer, the difficult point of the easy moisture absorption after solving solid ammonium nitrate and urea granules blending.
3. product particle compound nitrogenous fertilizer of the present invention can spread fertilizer over the fields and topdress as granular urea, and application effect is more better than urea ammonium nitrate solution, and avoids the problem using improper easy burning seedling.
4. product particle compound nitrogenous fertilizer of the present invention need not rely on drip irrigation equipment when using, and has more significantly saved packaging, transportation cost.
5. the particle compound nitrogenous fertilizer different shape nitrogen content proportioning of the inventive method production is wider, and total nutrient is high, and amidonitrogen, nitric nitrogen and ammonium nitrogen three kinds of form nitrogen nutrient formula are flexible, adapt to more plant growth demands.
Embodiment
Illustrate technical scheme of the present invention and effect below in conjunction with embodiment, but be not limited thereto.
Raw materials usedly in embodiment be convenient source, equipment used is conventional equipment.
Embodiment 1,
A production method for particle compound nitrogenous fertilizer, comprises the steps:
Be delivered in rotary drum by 200kg ammonium nitrate or ammonium nitrate P granular fertilizer, fluidisation is also preheated to 40 DEG C;
By 800kg urine or urea melting liquid through pressurization input rotary drum, sprayed on the fertiliser granulates of preheating by single fluid shower nozzle, and the fertiliser granulates being wrapped in fluidisation increases gradually; Finally obtain the particle compound nitrogenous fertilizer of nitrogen content 43.8% (amidonitrogen 36.8%, nitric nitrogen 3.5%, ammonium nitrogen 3.5%).
Embodiment 2,
A production method for particle compound nitrogenous fertilizer, comprises the steps:
Be delivered in rotary drum by 500kg ammonium nitrate or ammonium nitrate P granular fertilizer, fluidisation is also preheated to 60 DEG C;
By 500kg urine or urea melting liquid input rotary drum, sprayed on the fertiliser granulates of preheating by air atomizing two-fluid shower nozzle, and the fertiliser granulates being wrapped in fluidisation increases gradually; Finally obtain the particle compound nitrogenous fertilizer of nitrogen content 40.5% (amidonitrogen 23%, nitric nitrogen 8.75%, ammonium nitrogen 8.75%).
Embodiment 3,
A production method for particle compound nitrogenous fertilizer, comprises the steps:
Be delivered in rotary drum by 700kg granular urea fertilizer, fluidisation is also preheated to 50 DEG C;
By 300kg liquid ammonium nitrate through pressurization input rotary drum, sprayed on the fertiliser granulates of preheating by single fluid shower nozzle, and the fertiliser granulates being wrapped in fluidisation increases gradually; Finally obtain the particle compound nitrogenous fertilizer of nitrogen content 42.7% (amidonitrogen 32.2%, nitric nitrogen 5.25%, ammonium nitrogen 5.25%).
Embodiment 4,
A production method for particle compound nitrogenous fertilizer, comprises the steps:
Be delivered in rotary drum by 400kg granular urea fertilizer, fluidisation is also preheated to 50 DEG C;
By 600kg liquid ammonium nitrate through pressurization input rotary drum, sprayed on the fertiliser granulates of preheating by single fluid shower nozzle, and the fertiliser granulates being wrapped in fluidisation increases gradually; Finally obtain the particle compound nitrogenous fertilizer of nitrogen content 39.4% (amidonitrogen 18.4%, nitric nitrogen 10.5%, ammonium nitrogen 10.5%).
Claims (6)
1. a production method for particle compound nitrogenous fertilizer, comprises the steps:
(1) by ammonium nitrate fertilizer particle or ammonium nitrate phosphatic manure grain fluidized and be preheated to 40-60 DEG C;
(2) liquid area or urea melting liquid are sprayed on the fertiliser granulates of preheating, and the fertiliser granulates being wrapped in fluidisation carries out granulation, obtain particle compound nitrogenous fertilizer;
Or;
I () is grain fluidized and be preheated to 40-60 DEG C by urea fertilizer;
(ii) liquid ammonium nitrate is sprayed on the urea fertilizer particle of preheating, and the urea fertilizer particle being wrapped in fluidisation carries out granulation, obtain particle compound nitrogenous fertilizer.
2. the production method of particle compound nitrogenous fertilizer according to claim 1, is characterized in that, the whole process of particle compound nitrogen fertilizer production is carried out in granulating equipment.
3. the production method of particle compound nitrogenous fertilizer according to claim 2, is characterized in that, described granulating equipment is rotary drum, fluidized-bed or disk.
4. the production method of particle compound nitrogenous fertilizer according to claim 1, is characterized in that, step (2) or the spraying described in (ii) utilize single fluid shower nozzle or air atomizing two-fluid shower nozzle to spray.
5. the production method of particle compound nitrogenous fertilizer according to claim 2, is characterized in that, ventilates in step (2) or (ii) spraying process in granulating equipment.
6. the production method of particle compound nitrogenous fertilizer according to claim 1, is characterized in that, in step (2) or (ii) obtained particle compound nitrogenous fertilizer, urea quality percentage composition is 50-80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044735.3A CN105503280A (en) | 2016-01-22 | 2016-01-22 | Production method for granular compound mixed nitrogen fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610044735.3A CN105503280A (en) | 2016-01-22 | 2016-01-22 | Production method for granular compound mixed nitrogen fertilizer |
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| CN105503280A true CN105503280A (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610044735.3A Pending CN105503280A (en) | 2016-01-22 | 2016-01-22 | Production method for granular compound mixed nitrogen fertilizer |
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| CN (1) | CN105503280A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981641A (en) * | 2019-11-06 | 2020-04-10 | 金正大生态工程集团股份有限公司 | Solid bulk blended fertilizer containing coated synergistic urea and ammonium phosphate and preparation method thereof |
| CN113214017A (en) * | 2021-06-08 | 2021-08-06 | 陕西华盛农资有限公司 | Method for producing fertilizer containing nitrate nitrogen by using secondary guniting process |
| CN113999073A (en) * | 2021-11-08 | 2022-02-01 | 山西华鑫肥业股份有限公司 | Anti-caking process for nitro compound fertilizer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257053A (en) * | 1999-11-09 | 2000-06-21 | 蒋大洲 | Large size particle urea composite rotary drum prilling technology and equipment |
| CN1293175A (en) * | 2000-09-29 | 2001-05-02 | 泸天化（集团）有限责任公司 | Fluidized gramulating process of heterogeneous urea-base compound fertilizer |
| CN101696141A (en) * | 2009-08-25 | 2010-04-21 | 杨雁鸿 | Method for producing fluidized bed |
| CN103193535A (en) * | 2013-04-18 | 2013-07-10 | 天津芦阳化肥股份有限公司 | Quick-acting slow-released compound fertilizer and preparation method thereof |
-
2016
- 2016-01-22 CN CN201610044735.3A patent/CN105503280A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1257053A (en) * | 1999-11-09 | 2000-06-21 | 蒋大洲 | Large size particle urea composite rotary drum prilling technology and equipment |
| CN1293175A (en) * | 2000-09-29 | 2001-05-02 | 泸天化（集团）有限责任公司 | Fluidized gramulating process of heterogeneous urea-base compound fertilizer |
| CN101696141A (en) * | 2009-08-25 | 2010-04-21 | 杨雁鸿 | Method for producing fluidized bed |
| CN103193535A (en) * | 2013-04-18 | 2013-07-10 | 天津芦阳化肥股份有限公司 | Quick-acting slow-released compound fertilizer and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张小平编译: "尿素和硝酸铵成粒工艺的现代化", 《陕西化工》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981641A (en) * | 2019-11-06 | 2020-04-10 | 金正大生态工程集团股份有限公司 | Solid bulk blended fertilizer containing coated synergistic urea and ammonium phosphate and preparation method thereof |
| CN110981641B (en) * | 2019-11-06 | 2022-04-22 | 金正大生态工程集团股份有限公司 | Solid bulk blended fertilizer containing coated synergistic urea and ammonium phosphate and preparation method thereof |
| CN113214017A (en) * | 2021-06-08 | 2021-08-06 | 陕西华盛农资有限公司 | Method for producing fertilizer containing nitrate nitrogen by using secondary guniting process |
| CN113999073A (en) * | 2021-11-08 | 2022-02-01 | 山西华鑫肥业股份有限公司 | Anti-caking process for nitro compound fertilizer |
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