CN111517856A - Special corn fertilizer containing all-nitrogen and preparation method thereof - Google Patents
Special corn fertilizer containing all-nitrogen and preparation method thereof Download PDFInfo
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- CN111517856A CN111517856A CN202010347448.6A CN202010347448A CN111517856A CN 111517856 A CN111517856 A CN 111517856A CN 202010347448 A CN202010347448 A CN 202010347448A CN 111517856 A CN111517856 A CN 111517856A
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a corn special fertilizer containing total nitrogen and a preparation method thereof, wherein the corn special fertilizer comprises the following components in percentage by mass: 12 to 22 percent of ammonium nitrate phosphorus, 2.4 to 4.4 percent of ammonia water, 35 to 45 percent of urea, 15 to 23 percent of monoammonium phosphate, 12 to 22 percent of potassium chloride and 5 to 10 percent of bean cake fertilizer. The preparation method adopts a granulation technology of a granulation method, utilizes the viscosity of urea nitrate and ammonium phosphate solution as liquid phase quantity to complete granulation, utilizes ammonia water to ammoniate the ammonium phosphate to prevent excessive urea nitrate from being generated in the granulation process, and adopts a secondary drying system to prevent the ammonium phosphate and urea from generating secondary reaction due to high drying temperature. The product utilizes different nitrogen elements to release for different time, reduces nutrient loss and environmental pollution caused by excessive release of nitrogen elements, improves soil by utilizing organic matters, and improves the yield and quality of corn.
Description
Technical Field
The invention relates to a compound fertilizer, in particular to a special corn fertilizer containing all-nitrogen and a preparation method thereof.
Background
At present, a compound fertilizer is mainly prepared by mixing basic fertilizers containing nitrogen, phosphorus and potassium, such as urea, ammonium chloride, monoammonium phosphate, potassium chloride and the like, adding viscous fillers, such as attapulgite, clay and the like, at a certain temperature and liquid phase amount in a granulator, agglomerating into granules, drying, cooling and screening to prepare a compound fertilizer product. The production technology of the compound fertilizer is a production method widely used in China, the production process is simple, the operation is easy to master, but the product has single nitrogen element source, and a large amount of nitrogen nutrient is released intensively and quickly at the initial stage of application, so that the loss is caused by leaching, decomposition and volatilization, serious soil, air and water pollution is caused, the waste of the fertilizer is caused, and the field planting cost of farmers is increased.
Aiming at the problems, the method develops the full-state nitrogen-containing fertilizer applied to different crops, and reasonably provides nitrogen elements and organic matters according to the requirements of different crops, thereby being an effective way for realizing the efficient utilization of the fertilizer, reducing the investment, protecting the environment and improving the soil.
Disclosure of Invention
The invention aims to provide a corn special fertilizer containing total nitrogen, which contains organic nitrogen, nitrate nitrogen, ammonium nitrogen and amide nitrogen total nitrogen, wherein the total nitrogen contains quick-acting nitrogen and slow-release nitrogen, and the nutrient loss and the environmental pollution caused by the fact that crops cannot absorb nitrogen due to excessive release of nitrogen nutrients in the same period are reduced by utilizing different release time of different nitrogen, so that the nutrient utilization rate is higher.
The invention also aims to complete ammoniation of ammonium nitrate phosphorus in the melting process by adding ammonia water, prevent excessive urea nitrate from being generated in the granulation process, ensure that the production can not be normally carried out and solve the technical problem that urea and nitrate nitrogen materials can not be mixed.
It is a further object of the present invention to achieve soil environment improvement by organic matter.
In order to solve the technical problems, the invention adopts the technical scheme that: a special fertilizer for corn containing all nitrogen,
12-22% of ammonium nitrate phosphorus, 2.4-4.4% of ammonia water, 35-45% of urea, 15-23% of monoammonium phosphate, 12-22% of potassium chloride and 5-10% of bean cake fertilizer.
The raw material containing organic nitrogen is bean cake fertilizer, the raw material containing nitrate nitrogen is ammonium phosphate, the raw material containing ammonium nitrogen is ammonium phosphate (containing nitrate nitrogen and ammonium nitrogen), monoammonium phosphate and ammonia water, and the raw material containing amide nitrogen is urea.
The mass ratio of the ammonium phosphate nitrate to the ammonia water is 5: 1, urea nitrate generated by the reaction of the ammonium phosphate nitrate and the urea in the granulation process has high viscosity, and granulation without fillers can be realized, but if excessive urea nitrate is generated by reaction, the materials are muddy, and the production cannot be normally carried out, so that the ammonium phosphate nitrate needs to be aminated to control the quality of the generated urea nitrate, and a large number of experiments are carried out, and the use effect of the mass ratio of the ammonium phosphate nitrate to the ammonia water is optimal, namely 5: 1.
The preparation method of the special corn fertilizer containing all-nitrogen is characterized by comprising the following steps of:
(1) preparation of bean cake fertilizer (for use)
1.1, crushing the bean cakes to be less than 1mm, adding rice bran accounting for 3-5 percent of the mass of the bean cakes and a zymogen accounting for 0.4-0.5 percent of the mass of the bean cakes, uniformly mixing, and covering for 10-12 hours by using a film;
1.2, adjusting the water content to ensure that the water content of the mixed material for fermentation reaches 50-60 percent;
1.3 piling the mixed material with the adjusted moisture content into a wedge-shaped pile body with the width of 2m, the height of 1.5m and the proper length;
1.4 when the temperature of the stack body reaches 70 ℃ and is continuously maintained for 48 hours, turning the stack;
1.5 piling and fermenting for 12-15 days to prepare the bean cake fertilizer;
(2) adding the measured ammonium phosphate nitrate and ammonia water into a melting tank, controlling the temperature of the melting tank to be 155-165 ℃, and mixing for 30-35min to complete ammoniation of the ammonium phosphate nitrate and preparation of an ammonium phosphate solution;
(3) adding metered urea, monoammonium phosphate, potassium chloride and the bean cake fertilizer prepared in the step (1) into a rotary drum granulator through a microcomputer batching system by utilizing a granulation method compound fertilizer production device, simultaneously atomizing the ammonium nitrate phosphorus solution prepared in the step (2) and spraying the atomized ammonium nitrate phosphorus solution into materials in the rotary drum granulator, finishing the material granulation process by utilizing the viscosity of urea nitrate generated by the reaction of ammonium nitrate phosphorus and urea by utilizing the ammonium nitrate phosphorus solution as a liquid phase amount, and controlling the material temperature in the rotary drum granulator to be 60-65 ℃ and the granulation time to be 6-8 min;
(4) after granulation, the material enters a primary dryer, the inlet temperature of the primary dryer is controlled at 105-;
(5) controlling the inlet temperature of the secondary dryer at 85-95 ℃ and drying for 30-35 min;
(6) after drying, respectively carrying out coarse screening and fine screening, wherein the diameter of a screen hole of the coarse screening is 4.5mm, the diameter of a screen hole of the fine screening is 2.0mm, particles with the diameter of more than 4.5mm after coarse screening are crushed by a crusher, powder materials with the diameter of less than 2.0mm after fine screening are returned to a rotary drum granulator, and qualified products enter a cooling machine;
(7) and (4) the qualified product after being cooled for 30-35min enters a wrapping machine, and is packaged after anti-caking treatment.
The fermentation bacteria agent is Em bacteria.
The drying procedure adopts secondary drying treatment, can reduce the drying temperature, prolong the drying time, and prevent the secondary reaction of ammonium phosphate and urea in the dryer due to high drying temperature, so that the production can not be normally carried out.
Compared with the prior art, the special corn fertilizer containing all-nitrogen and the preparation method thereof have the following advantages:
1. the product contains all-state nitrogen: organic nitrogen, nitrate nitrogen, ammonium nitrogen and amide nitrogen, wherein the nitrate nitrogen and the ammonium nitrogen are quick-acting nitrogen, the organic nitrogen and the amide nitrogen are slow-release nitrogen. After the fertilizer is applied to soil, nitrate nitrogen starts to be released in 5-7 days, ammonium nitrogen starts to be released in 10-15 days, amide nitrogen starts to be released in 15 days, and organic nitrogen starts to be released in 25 days, so that the nutrient loss is reduced, and the nutrient utilization rate is improved.
2. The viscosity of the urea nitrate is used as a liquid phase required by granulation, so that soilless granulation is realized, and the cost of raw materials is reduced.
3. Ammoniating ammonium nitrate phosphorus by ammonia water, controlling the quality of the generated urea nitrate, and solving the technical problem that the urea and nitrate nitrogen materials can not be mixed.
4. The product has reasonable proportion and accords with the fertilizer requirement rule for corn growth.
Drawings
FIG. 1 is a flow chart of a preparation method of a fertilizer containing total nitrogen special for corn.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
as shown in figure 1, the special corn fertilizer containing total nitrogen comprises 12-22% of ammonium phosphate, 2.4-4.4% of ammonia water, 35-45% of urea, 15-23% of monoammonium phosphate, 12-22% of potassium chloride and 5-10% of bean cake fertilizer by mass.
The raw material containing organic nitrogen is bean cake fertilizer, the raw material containing nitrate nitrogen is ammonium phosphate, the raw material containing ammonium nitrogen is ammonium phosphate, monoammonium phosphate and ammonia water, and the raw material containing amide nitrogen is urea.
The mass ratio of the ammonium nitrate phosphorus to the ammonia water is 5: 1.
The preparation method of the special corn fertilizer containing all-nitrogen is characterized by comprising the following steps of:
(1) preparation of bean cake fertilizer (for use)
1.1, crushing the bean cakes to be less than 1mm, adding rice bran accounting for 3-5 percent of the mass of the bean cakes and a zymogen accounting for 0.4-0.5 percent of the mass of the bean cakes, uniformly mixing, and covering for 10-12 hours by using a film;
1.2, adjusting the water content to ensure that the water content of the mixed material for fermentation reaches 50-60 percent;
1.3 piling the mixed material with the adjusted moisture content into a wedge-shaped pile body with the width of 2m, the height of 1.5m and the proper length;
1.4 when the temperature of the stack body reaches 70 ℃ and is continuously maintained for 48 hours, turning the stack;
1.5 piling and fermenting for 12-15 days to prepare the bean cake fertilizer;
(2) adding the measured ammonium phosphate nitrate and ammonia water into a melting tank, controlling the temperature of the melting tank to be 155-165 ℃, and mixing for 30-35min to complete ammoniation of the ammonium phosphate nitrate and preparation of an ammonium phosphate solution;
(3) adding metered urea, monoammonium phosphate, potassium chloride and the bean cake fertilizer prepared in the step (1) into a rotary drum granulator through a microcomputer batching system by utilizing a granulation method compound fertilizer production device, simultaneously atomizing the ammonium nitrate phosphorus solution prepared in the step (2) and spraying the atomized ammonium nitrate phosphorus solution into materials in the rotary drum granulator, finishing the material granulation process by utilizing the viscosity of urea nitrate generated by the reaction of ammonium nitrate phosphorus and urea by utilizing the ammonium nitrate phosphorus solution as a liquid phase amount, and controlling the material temperature in the rotary drum granulator to be 60-65 ℃ and the granulation time to be 6-8 min;
(4) after granulation, the material enters a primary dryer, the inlet temperature of the primary dryer is controlled at 105-;
(5) controlling the inlet temperature of the secondary dryer at 85-95 ℃ and drying for 30-35 min;
(6) after drying, respectively carrying out coarse screening and fine screening, wherein the diameter of a screen hole of the coarse screening is 4.5mm, the diameter of a screen hole of the fine screening is 2.0mm, particles with the diameter of more than 4.5mm after coarse screening are crushed by a crusher, powder materials with the diameter of less than 2.0mm after fine screening are returned to a rotary drum granulator, and qualified products enter a cooling machine;
(7) and (4) the qualified product after being cooled for 30-35min enters a wrapping machine, and is packaged after anti-caking treatment.
The fermentation bacteria agent is Em bacteria.
The drying process adopts secondary drying treatment.
The invention is further illustrated by the following examples:
example 1: the product proportion is 25-10-12, taking the consumption quota of 1 ton of product raw materials as an example:
the specific production flow is as follows:
(1) preparation of soybean cake fertilizer
Crushing 10 tons of bean cakes (in percentage by mass, the same below) to below 1mm, adding 400 kilograms of rice bran and 40 kilograms of Em bacteria, uniformly mixing, and covering with a film for 10 hours; adjusting the water content to ensure that the water content of the mixed material for fermentation reaches 55 percent, and piling the mixed material into a wedge-shaped pile body with the width of 2m, the height of 1.5m and the proper length; turning the pile when the temperature of the pile reaches 70 ℃ and continuously maintaining for 48 hours; stacking and fermenting for 13 days to obtain the bean cake fertilizer with 7 percent of organic nitrogen and 60 percent of organic matter;
(2) adding 150 kg of metered ammonium phosphate (containing 15% of nitrate nitrogen, 17% of ammonium nitrogen and 25% of P2O 54%) and 30 kg of ammonia water (containing 25% of ammonium nitrogen) into a melting tank, controlling the temperature of the melting tank at 160 ℃, and mixing for 32 min;
(3) 370 kilograms of metered urea (containing 46.2 percent of amide nitrogen), 175 kilograms of monoammonium phosphate (containing 11 percent of ammonium nitrogen and 554 percent of P2O), 195 kilograms of potassium chloride (containing K2O 62 percent) and 80 kilograms of bean cake fertilizer (containing 7 percent of organic nitrogen and 60 percent of organic matters) prepared in the step (1) are added into a rotary drum granulator through a microcomputer batching system, and meanwhile, the ammonium nitrate phosphorus solution prepared in the step (2) is atomized and sprayed into materials in the rotary drum granulator to complete material granulation, wherein the temperature of the materials in the rotary drum granulator is controlled at 60 ℃, and the granulation time is 7 minutes;
(4) the granulated material enters a primary dryer, the inlet temperature of the primary dryer is controlled at 110 ℃, and the granulated material is dried for 30min and enters a secondary dryer;
(5) the inlet temperature of the secondary dryer is controlled at 85 ℃, and the drying time is 32 min;
(6) respectively sieving after drying, crushing grains with the size of more than 4.5mm after coarse sieving by a crusher, returning powdery materials with the size of less than 2.0mm after fine sieving to a rotary drum granulator, and feeding qualified products to a cooler;
(7) and (4) the qualified product after being cooled for 32min enters a wrapping machine, and is packaged after anti-caking treatment, so that the special fertilizer containing all nitrogen for the corn, the granularity of which is 2-4.5mm, is obtained. The product contains 25.13-10.05-12.09% of N-P2O5-K2O, wherein the content of organic nitrogen is 0.56%, the content of nitrate nitrogen is 2.25%, the content of ammonium nitrogen is 5.23%, the content of amide nitrogen is 17.09%, the content of organic matters is 4.80%, the content of water is 1.5%, the strength is 17N, and the particles are smooth and round.
Example 2: the product proportion is 27-11-8, taking the consumption quota of 1 ton of product raw materials as an example:
the specific production flow is as follows:
(1) preparation of soybean cake fertilizer
Crushing 10 tons of bean cakes (in percentage by mass, the same below) to below 1mm, adding 400 kilograms of rice bran and 50 kilograms of Em bacteria, uniformly mixing, and covering with a film for 11 hours; adjusting the water content to ensure that the water content of the mixed material for fermentation reaches 55 percent, and piling the mixed material into a wedge-shaped pile body with the width of 2m, the height of 1.5m and the proper length; turning the pile when the temperature of the pile reaches 70 ℃ and continuously maintaining for 48 hours; stacking and fermenting for 15 days to obtain the bean cake fertilizer with 7 percent of organic nitrogen and 60 percent of organic matter;
(2) adding 180 kg of measured ammonium phosphate nitrate (containing 15% of nitrate nitrogen, 17% of ammonium nitrogen and 25% of P2O 54%) and 36 kg of ammonia water (containing 25% of ammonium nitrogen) into a melting tank, controlling the temperature of the melting tank at 155 ℃, and mixing for 32 min;
(3) utilizing compound fertilizer production equipment adopting a granulation method, adding 385 kilograms of metered urea (containing 46.2 percent of amide nitrogen), 192 kilograms of monoammonium phosphate (containing 11 percent of ammonium nitrogen and 554 percent of P2O), 130 kilograms of potassium chloride (containing K2O 62 percent) and 77 kilograms of bean cake fertilizer (containing 7 percent of organic nitrogen and 60 percent of organic matters) prepared in the step (1) into a rotary drum granulator through a microcomputer batching system, atomizing the ammonium nitrate phosphorus solution prepared in the step (2), spraying the atomized ammonium nitrate phosphorus solution into materials in the rotary drum granulator, and completing granulation of the materials, wherein the temperature of the materials in the rotary drum granulator is controlled at 60 ℃, and the granulation time is 7.5 min;
(4) feeding the granulated material into a primary dryer, controlling the inlet temperature of the primary dryer at 105 ℃, drying for 35min, and feeding the dried material into a secondary dryer;
(5) the inlet temperature of the secondary dryer is controlled at 85 ℃, and the drying time is 32 min;
(6) respectively sieving after drying, crushing grains with the size of more than 4.5mm after coarse sieving by a crusher, returning powdery materials with the size of less than 2.0mm after fine sieving to a rotary drum granulator, and feeding qualified products to a cooler;
(7) and (4) the qualified product after being cooled for 35min enters a wrapping machine, and is packaged after anti-caking treatment, so that the special fertilizer containing all nitrogen for the corn, the granularity of which is 2-4.5mm, is obtained. The product contains 27.10-11.09-8.06% of N-P2O5-K2O, wherein the content of organic nitrogen is 0.54%, the content of nitrate nitrogen is 2.70%, the content of ammonium nitrogen is 6.07%, the content of amide nitrogen is 17.79%, the content of organic matters is 4.62%, the content of water is 1.7%, the strength is 15N, and the particles are smooth and round.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The fertilizer containing all-nitrogen special for the corn is characterized in that ammonium phosphate accounts for 12-22% of the total input raw material amount by mass, ammonia water accounts for 2.4-4.4% of the total input raw material amount by mass, urea accounts for 35-45% of the total input raw material amount by mass, monoammonium phosphate accounts for 15-23% of the total input raw material amount by mass, potassium chloride accounts for 12-22% of the total input raw material amount by mass, and bean cake fertilizer accounts for 5-10% of the total input raw material amount by mass.
2. The fertilizer containing total nitrogen for corn as claimed in claim 1, wherein the raw material containing organic nitrogen is bean cake fertilizer, the raw material containing nitrate nitrogen is ammonium phosphate, the raw material containing ammonium nitrogen is ammonium phosphate, monoammonium phosphate and ammonia water, and the raw material containing amide nitrogen is urea.
3. The fertilizer containing all-nitrogen special for corns according to claim 1, is characterized in that the mass ratio of the ammonium nitrate phosphorus to the ammonia water is 5: 1.
4. The preparation method of the fertilizer containing total nitrogen specially used for corns according to the claim 1, is characterized by comprising the following steps:
(1) preparation of bean cake fertilizer (for use)
1.1, crushing the bean cakes to be less than 1mm, adding rice bran accounting for 3-5 percent of the mass of the bean cakes and a zymogen accounting for 0.4-0.5 percent of the mass of the bean cakes, uniformly mixing, and covering for 10-12 hours by using a film;
1.2, adjusting the water content to ensure that the water content of the mixed material for fermentation reaches 50-60 percent;
1.3 piling the mixed material with the adjusted moisture content into a wedge-shaped pile body with the width of 2m, the height of 1.5m and the proper length;
1.4 when the temperature of the stack body reaches 70 ℃ and is continuously maintained for 48 hours, turning the stack;
1.5 piling and fermenting for 12-15 days to prepare the bean cake fertilizer;
(2) adding the measured ammonium phosphate nitrate and ammonia water into a melting tank, controlling the temperature of the melting tank to be 155-165 ℃, and mixing for 30-35min to complete ammoniation of the ammonium phosphate nitrate and preparation of an ammonium phosphate solution;
(3) adding metered urea, monoammonium phosphate, potassium chloride and the bean cake fertilizer prepared in the step (1) into a rotary drum granulator through a microcomputer batching system by utilizing a granulation method compound fertilizer production device, simultaneously atomizing the ammonium nitrate phosphorus solution prepared in the step (2) and spraying the atomized ammonium nitrate phosphorus solution into materials in the rotary drum granulator, finishing the material granulation process by utilizing the viscosity of urea nitrate generated by the reaction of ammonium nitrate phosphorus and urea by utilizing the ammonium nitrate phosphorus solution as a liquid phase amount, and controlling the material temperature in the rotary drum granulator to be 60-65 ℃ and the granulation time to be 6-8 min;
(4) after granulation, the material enters a primary dryer, the inlet temperature of the primary dryer is controlled at 105-;
(5) controlling the inlet temperature of the secondary dryer at 85-95 ℃ and drying for 30-35 min;
(6) after drying, respectively carrying out coarse screening and fine screening, wherein the diameter of a screen hole of the coarse screening is 4.5mm, the diameter of a screen hole of the fine screening is 2.0mm, particles with the diameter of more than 4.5mm after coarse screening are crushed by a crusher, powder materials with the diameter of less than 2.0mm after fine screening are returned to a rotary drum granulator, and qualified products enter a cooling machine;
(7) and (4) the qualified product after being cooled for 30-35min enters a wrapping machine, and is packaged after anti-caking treatment.
5. The method for preparing the fertilizer containing all-nitrogen special for corns according to claim 4, wherein the zymophyte agent is Em bacteria.
6. The method for preparing the fertilizer containing total nitrogen specially used for corns according to the claim 4, characterized in that the drying process adopts secondary drying treatment.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617218A (en) * | 2012-04-06 | 2012-08-01 | 湖南金叶肥料有限责任公司 | Special active fertilizer for honeysuckle and preparation method thereof |
| 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 |
| CN104163677A (en) * | 2014-08-08 | 2014-11-26 | 西安济邦新农化实业有限公司 | Carbon-base polymorphic-nitrogen ecological fertilizer and production method thereof |
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2020
- 2020-04-23 CN CN202010347448.6A patent/CN111517856A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617218A (en) * | 2012-04-06 | 2012-08-01 | 湖南金叶肥料有限责任公司 | Special active fertilizer for honeysuckle and preparation method thereof |
| 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 |
| CN104163677A (en) * | 2014-08-08 | 2014-11-26 | 西安济邦新农化实业有限公司 | Carbon-base polymorphic-nitrogen ecological fertilizer and production method thereof |
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Application publication date: 20200811 |