CN101759478A - Preparation method of compound fertilizer - Google Patents
Preparation method of compound fertilizer Download PDFInfo
- Publication number
- CN101759478A CN101759478A CN200910260067A CN200910260067A CN101759478A CN 101759478 A CN101759478 A CN 101759478A CN 200910260067 A CN200910260067 A CN 200910260067A CN 200910260067 A CN200910260067 A CN 200910260067A CN 101759478 A CN101759478 A CN 101759478A
- Authority
- CN
- China
- Prior art keywords
- preparation
- ammonium nitrate
- monoammonium phosphate
- filler
- temperature
- 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.)
- Granted
Links
Images
Landscapes
- Fertilizers (AREA)
Abstract
The invention provides a preparation method of a compound fertilizer, which comprises the following steps of: (a) fusing ammonium nitrate and heating monoammonium phosphate, potassium chloride and filler; (b) mixing the fused ammonium nitrate, the heated monoammonium phosphate and the filler; (c) granulating and cooling the mixed material; (d) screening the cooled material; and (e) re-cooling and conditioning the screened material. The preparation method of the compound fertilizer carries out the production by adopting fused ammonium nitrate and powdery monoammonium phosphate, omits devices for ammonium nitrate, phosphoric acid, synthetic ammonia and the like and has simple process flow and small investment scale. The prepared each fertilizer granule contains uniform nutrient and is suitable for mechanical fertilization.
Description
Technical field
The present invention relates to field of fertilizer production, be specifically related to the preparation method of compound manure.
Background technology
Compound manure is meant the chemical fertilizer that contains nitrogen, phosphorus, potassium three elements simultaneously or only contain wherein any two kinds of key elements.It has overcome traditional straight fertilizer (only containing wherein a kind of chemical fertilizer of key element of nitrogen, phosphorus, potassium) single shortcoming of content, can how much filling a prescription according to N-P-K content in the soil of different areas.
A kind of compound manure contains three kinds of elements of nitrogen phosphorus potassium simultaneously, raw material comprises: ammonium nitrate (containing nitric nitrogen, ammonium nitrogen), monoammonium phosphate (containing ammonium nitrogen, water-soluble phosphorus, citric acid soluble phosphorus), Repone K (containing magnesium chloride simultaneously), additive (trace elements such as calcic, iron, sulphur), borax (boracic), additive and borax are called filler.
This compound manure contains quick-acting phosphorus and slow phosphorus simultaneously because contain the molten phosphorus of water-soluble phosphorus and Chinese holly simultaneously, can be by the crop rapid absorption, and can make base fertilizer; Contain nitric nitrogen, ammonium nitrogen simultaneously, can improve the crop and fruit quality, make cash crop such as vegetables, fruit best in quality; Contain the required various middle trace element of crop, comprehensive yield increase effect is arranged.
But the present production technique of this compound manure is to adopt nitric acid to add the explained hereafter of phosphoric acid, gas ammonia, and requiring must supportingly have devices such as nitric acid, phosphoric acid and synthetic ammonia, and scale of investment is had relatively high expectations.
Summary of the invention
The problem that the present invention solves is to provide a kind of preparation method of compound manure, does not need devices such as supporting nitric acid, phosphoric acid and synthetic ammonia, and technical process is simple, and scale of investment is little.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
A kind of preparation method of compound manure comprises:
A) with the ammonium nitrate fusion, with monoammonium phosphate, Repone K, filler heating;
B) with the ammonium nitrate after the fusion with the heating after monoammonium phosphate, Repone K and filler mix;
C) mixed material is carried out the granulation postcooling;
D) cooled material is sieved;
E) nurse one's health after the material after will sieving cools off once more.
As preferably, also comprise before the described step a) raw material ammonium nitrate, monoammonium phosphate, Repone K are carried out fragmentation, screening and metering respectively, and filler is measured.
As preferably, ammonium nitrate fused temperature is 180 ℃～185 ℃ in the described step a).
As preferably, the temperature of monoammonium phosphate heating is 50 ℃～70 ℃ in the described step a).
As preferably, the temperature of Repone K and filler heating is 90 ℃～110 ℃ in the described step a).
As preferably, in the described step b) monoammonium phosphate, Repone K and filler after the ammonium nitrate after the fusion and the heating are mixed and be specially, earlier with the ammonium nitrate after the fusion with heat after monoammonium phosphate carry out the first step and mix, mixed then material carries out the second stage with the mixture of Repone K and filler again to be mixed.
As preferably, described first step blended temperature is 150 ℃～165 ℃.
As preferably, described second stage blended temperature is 150 ℃～160 ℃.
As preferably, in the described step d) cooled material sieved to particle diameter is gone out less than 1mm with greater than the material screening of 4.75mm, and be back to the second stage and mix; Particle diameter enters step e) more than or equal to 1mm and smaller or equal to the material of 4.75mm.
As preferably, described step e) also comprises sieves cooled material once more once more.
The technology that the preparation method of compound manure provided by the invention adopts the ammonium nitrate fusion to add powdery monoammonium phosphate is produced; save devices such as nitric acid, phosphoric acid and synthetic ammonia; technical process is simple; scale of investment is little; all contain the nutrient of homogeneous in the fertile particle of every granulation of preparing, be fit to mechanized application.
Description of drawings
Fig. 1 is preparation technology's schema of the compound manure that the specific embodiment of the invention provided.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, but should be appreciated that these describe just to further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
Please refer to Fig. 1, Fig. 1 is preparation technology's schema of the compound manure that the specific embodiment of the invention provided.The preparation method of compound manure provided by the invention is:
1) as preferred, at first each raw material is carried out pre-treatment, comprise fragmentation, screening and metering.Raw material ammonium nitrate is dropped into bucket elevator through hopper, be transported to vibratory screening apparatus, caking ammonium nitrate after bolting is through crusher in crushing, and the diffusing shape ammonium nitrate after the fragmentation is transported to vibratory screening apparatus by bucket elevator again, and tiny diffusing shape ammonium nitrate enters metering system again and measures below vibratory screening apparatus.Raw material monoammonium phosphate, Repone K all enter metering system after handling with the identical operation of ammonium nitrate.
Filler through metering preferably with through the Repone K that measures mixes, and carries out the metering second time together, and filler is the mixture of additive and borax, comprises trace elements such as calcium, iron, sulphur in the additive.The metering of every kind of raw material is that system carries out automatic continuous measuring according to every kind of proportion of raw materials of input computer, and every kind of raw material after metering is promoted to hundred meters high high top of tower more respectively through the special-purpose lift technique up to hundred meters.
2) ammonium nitrate after metering enters special-purpose fusion apparatus, and the temperature of fusion tank preferably is controlled at 180 ℃～185 ℃, begins fusion when the temperature to 179 of ammonium nitrate ℃.Simultaneously, after metering monoammonium phosphate is heated with powder heater, the temperature of heating is preferably 50 ℃～70 ℃.
Heat mixing and also sending in the powder heater through the Repone K after the metering for the second time and filler, the temperature of heating is preferably 90 ℃～110 ℃.Because ammonium nitrate fused temperature is higher, ammonium nitrate be liquid state during fusion, and pulverous filler is not suitable for mixing with ammonium nitrate, and the Heating temperature of monoammonium phosphate is lower, so filler is the most suitable mixes with Repone K.
3) with the ammonium nitrate after the fusion with the heating after monoammonium phosphate, Repone K and filler mix.Because ammonium nitrate is easily blasted when molten state, monoammonium phosphate has the performance that stops the ammonium nitrate blast, and Repone K then can promote blast to take place, and therefore carries out as preferably mixed processes being divided into two-stage, avoids the generation of negative reaction.Be specially earlier with the ammonium nitrate after the fusion with heat after monoammonium phosphate carry out the first step and mix, first step mixing temperature is preferably 150 ℃～165 ℃, mixed then material carries out the second stage with the mixture of Repone K and filler again to be mixed, and second stage mixing temperature is preferably 150 ℃～160 ℃.
4) suspension liquid with mixed material carries out granulation; can adopt the differential type tablets press; high-temp liquid has promptly become uniform drop after granulation, freely fall naturally cooling in dropping process and solidify, form smooth in appearance, mellow and full material again from 80 meters high-altitude.
5) fall to tower at the bottom of cooled material be delivered to screening plant by travelling belt, material is sieved according to size, particle diameter all is sized out less than 1mm with greater than the particle of 4.75mm, after crusher in crushing, enter second stage mixed processes more again greater than the particle of 4.75mm, carry out granulation more again with after the mixing of materials with fine particle less than 1mm.
6) with particle diameter more than or equal to 1mm and send into refrigerating unit smaller or equal to the material of 4.75mm and cool off once more, nursing one's health processing then promptly becomes compound manure.Because cooled material can produce fine powder once more, therefore need once sieve again as preferred cooled once more material, the material that particle diameter is qualified is just nursed one's health processing.
Embodiment:
The weight percent prescription of the compound manure of preparation is: ammonium nitrate 43%, and monoammonium phosphate 28%, Repone K 25.7%, additive 2.7%, borax 0.6% in the computer with above each weight percent input metering system, is prepared according to this proportioning.
The temperature of fusion tank is set to 182 ℃, and the temperature of monoammonium phosphate heating unit is set at 60 ℃, and the temperature of Repone K heating unit is set at 100 ℃, and first step mixing temperature is 155 ℃, and second stage mixing temperature is 155 ℃.
Comparative Examples 1:
The compound manure of identical proportioning among preparation and the embodiment, the temperature of fusion tank is set to 175 ℃, and the temperature of monoammonium phosphate heating unit is set at 50 ℃, and the temperature of Repone K heating unit is set at 90 ℃, first step mixing temperature is 150 ℃, and second stage mixing temperature is 150 ℃.
Comparative Examples 2:
The compound manure of identical proportioning among preparation and the embodiment, the temperature of fusion tank is set to 188 ℃, and the temperature of monoammonium phosphate heating unit is set at 70 ℃, and the temperature of Repone K heating unit is set at 110 ℃, first step mixing temperature is 158 ℃, and second stage mixing temperature is 158 ℃.
Comparative Examples 3:
The compound manure of identical proportioning among preparation and the embodiment, the temperature of fusion tank is set to 183 ℃, and the temperature of monoammonium phosphate heating unit is set at 60 ℃, and the temperature of Repone K heating unit is set at 100 ℃, first step mixing temperature is 164 ℃, and second stage mixing temperature is 164 ℃.
The phenomenon of observation in preparation process compares, and the result is as shown in table 1:
The condition of production under the different preparation conditions of table 1 relatively
| Preparation condition | The material reaction situation | The granulation situation |
| Comparative Examples 1 | Strong negative reaction does not take place in material. | Material viscosity is big, and is mobile poor, and the shower nozzle operation was promptly stopped up in 40 minutes, and particle is flat after the granulation. |
| Comparative Examples 2 | Higher because of melt temperature, material promptly begins to smoke clogging in fusion tank. | Smoke clogging because of fusion tank, stop into grain, tablets press does not have material. |
| Preparation condition | The material reaction situation | The granulation situation |
| Comparative Examples 3 | Normally fusion in fusion tank, too high because of mixing temperature, material begins to smoke clogging in tempering tank. | Smoke clogging because of tempering tank, stop into grain, tablets press does not have material. |
| Embodiment | The all no abnormal reaction of material in fusion tank and the tempering tank has only the little ammonia flavor to overflow the normal volatilization when belonging to high-temperature fusion. | Material fluidity is better, and (all belonging to impurity stops up) found that latch up phenomenon was arranged in 8 hours in tablets press operation, during granulation even, particle is mellow and full, produces normal. |
Can see that the mixing temperature of melt temperature and material is lower in the Comparative Examples 1, even melt temperature is less than 180 ℃; be lower than preferred temperature, lower temperature causes material viscosity to increase mobile step-down; bring difficulty for the granulation of postorder, very easily stop up tablets press, the particle after the granulation is flat partially.Mixing temperature is normal in the Comparative Examples 2, and in preferred range, but melt temperature surpasses 185 ℃, and too high melt temperature makes the ammonium nitrate generation cigar burning in the fusion tank, can produce thick smoke, and causing can't granulation.Melt temperature is normal in the Comparative Examples 3, and in preferred range, but mixing temperature surpasses 160 ℃, and too high mixing temperature makes the material burning in the tempering tank, begins to smolder, and causing can't granulation.
And among the embodiment ammonium nitrate carried out fusion and when material mixed, the temperature of employing all in preferred range of the present invention, no abnormal reaction in the preparation process, and material fluidity is good, tablets press is difficult for stopping up, granulation is even, particle is mellow and full, produces normal; Nitrogen content (N%) 〉=14.5 in the product of preparation, phosphorus content (P
2O
5%) 〉=14.5, potassium content (K
2O%) 〉=14.5, total content (N+P
2O
5+ K
2O) 〉=48.0%, moisture content≤2.0% contains the needed various middle trace elements of crop, all contains the nutrient of homogeneous in each particle, is fit to mechanized application.
More than the preparation method of a kind of compound manure provided by the present invention is described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. the preparation method of a compound manure is characterized in that, comprising:
A) with the ammonium nitrate fusion, with monoammonium phosphate, Repone K, filler heating;
B) with the ammonium nitrate after the fusion with the heating after monoammonium phosphate, Repone K and filler mix;
C) mixed material is carried out the granulation postcooling;
D) cooled material is sieved;
E) nurse one's health after the material after will sieving cools off once more.
2. preparation method according to claim 1 is characterized in that, also comprises before the described step a) raw material ammonium nitrate, monoammonium phosphate, Repone K are carried out fragmentation, screening and metering respectively, and filler is measured.
3. preparation method according to claim 1 is characterized in that, ammonium nitrate fused temperature is 180 ℃～185 ℃ in the described step a).
4. preparation method according to claim 1 is characterized in that, the temperature of monoammonium phosphate heating is 50 ℃～70 ℃ in the described step a).
5. preparation method according to claim 1 is characterized in that, the temperature of Repone K and filler heating is 90 ℃～110 ℃ in the described step a).
6. preparation method according to claim 1, it is characterized in that, in the described step b) monoammonium phosphate, Repone K and filler after the ammonium nitrate after the fusion and the heating are mixed and be specially, earlier with the ammonium nitrate after the fusion with heat after monoammonium phosphate carry out the first step and mix, mixed then material carries out the second stage with the mixture of Repone K and filler again to be mixed.
7. preparation method according to claim 6 is characterized in that, described first step blended temperature is 150 ℃～165 ℃.
8. preparation method according to claim 6 is characterized in that, described second stage blended temperature is 150 ℃～160 ℃.
9. preparation method according to claim 1 is characterized in that, in the described step d) cooled material is sieved to particle diameter is gone out less than 1mm with greater than the material screening of 4.75mm, and is back to the second stage and mixes; Particle diameter enters step e) more than or equal to 1mm and smaller or equal to the material of 4.75mm.
10. preparation method according to claim 1 is characterized in that, described step e) also comprises sieves cooled material once more once more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910260067A CN101759478B (en) | 2009-12-24 | 2009-12-24 | Preparation method of compound fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910260067A CN101759478B (en) | 2009-12-24 | 2009-12-24 | Preparation method of compound fertilizer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101759478A true CN101759478A (en) | 2010-06-30 |
| CN101759478B CN101759478B (en) | 2012-08-29 |
Family
ID=42490882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910260067A Active CN101759478B (en) | 2009-12-24 | 2009-12-24 | Preparation method of compound fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101759478B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105198520A (en) * | 2015-08-14 | 2015-12-30 | 中国石油化工股份有限公司 | Method for preventing burning explosion of ammonium nitrate in nitrate-sulfur-based compound fertilizer tower granulation production process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148335C (en) * | 2001-09-19 | 2004-05-05 | 上海化工研究院 | A kind of method for manufacturing nitrogen, phosphorus and potassium compound fertilizer |
| CN1182085C (en) * | 2002-01-31 | 2004-12-29 | 周建军 | Process for preparing high-concentration compound N-P-K fertilizer by tower-type granulating |
| CN101357859A (en) * | 2007-08-01 | 2009-02-04 | 福建永春县哈迪利复合肥有限责任公司 | Granular complex fertilizer and molten slurry granulation method thereof |
| CN101440004B (en) * | 2008-12-22 | 2012-02-15 | 张超 | Method for preparing high tower control release compound fertilizer |
-
2009
- 2009-12-24 CN CN200910260067A patent/CN101759478B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105198520A (en) * | 2015-08-14 | 2015-12-30 | 中国石油化工股份有限公司 | Method for preventing burning explosion of ammonium nitrate in nitrate-sulfur-based compound fertilizer tower granulation production process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101759478B (en) | 2012-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101570455B (en) | Method for preparing particle ammonium sulfate product by organic-inorganic binder | |
| CN101993277B (en) | Production process of high tower melt-granulated compound fertilizer | |
| CN102807443B (en) | High-efficiency all-nutritional corn special fertilizer prepared by granulation of tower-type melt and production method thereof | |
| CN101575222B (en) | Method for producing granular ammonium sulfate product by using inorganic binder | |
| CN103102213B (en) | Preparation method of special long-term slow-release compound fertilizer for wheat | |
| CN113548922A (en) | Fertilizer granules with micronized sulphur | |
| CN104418637B (en) | A kind of colorful slow release compound fertilizer and preparation method thereof | |
| CN103058761B (en) | Slow release compound fertilizer applicable to plantation of wheat | |
| CN102690144B (en) | Method for producing granular potassium sulfate | |
| CN110590438A (en) | High-tower polymorphic nitrogen and potassium topdressing compound fertilizer and preparation method thereof | |
| CN110590429A (en) | Multifunctional high-tower full-water-soluble sulfur-based fertilizer and preparation method thereof | |
| CN101759478B (en) | Preparation method of compound fertilizer | |
| CN103058751A (en) | Preparation method for special slow-release long-acting compound fertilizer for corn | |
| CN102432401A (en) | High-tower granulation slow-release long-acting sulfur-based nitrogen-phosphorus compound fertilizer and preparation method thereof | |
| CN104692952A (en) | Special melt granulated, rich-selenium and nitre-sulfur based fertilizer for jujube trees and preparation method thereof | |
| CN103058754A (en) | Slow-release compound fertilizer applicable to plantation of corn | |
| CN103058760A (en) | Slow release compound fertilizer applicable to plantation of tobacco | |
| CN103058755A (en) | Slow release compound fertilizer applicable to plantation of cotton | |
| CN103274813A (en) | Composite fertilizer specially used for corns | |
| CN101921142B (en) | High tower urea-based compound fertilizer and preparation method thereof | |
| CN111559934A (en) | High tower fertilizer with quick-acting, slow-releasing and controlled-releasing functions and preparation method thereof | |
| WO2018032844A1 (en) | Method for preparing zinc-containing sustained-release pellet potash fertilizer | |
| CN107188719B (en) | Internal addition anti-caking agent capable of reducing biuret content in high-tower compound fertilizer and preparation method thereof | |
| CN213977481U (en) | Apparatus for producing of phosphorus potassium nitrate compound fertilizer | |
| CN103058757A (en) | Preparation method for special slow-release long-acting compound fertilizer for vegetable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 610000 No. two South Road, Xindu Industrial Development Zone, Chengdu, Sichuan Patentee after: Chengdu cloud picture Cmi Holdings Ltd Address before: 610000 No. two South Road, Xindu Industrial Development Zone, Chengdu, Sichuan Patentee before: Chengdu Xindu Chemical Industry Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |