CN101486610B - Compound fertilizer production method without drying process - Google Patents
Compound fertilizer production method without drying process Download PDFInfo
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- CN101486610B CN101486610B CN 200810241342 CN200810241342A CN101486610B CN 101486610 B CN101486610 B CN 101486610B CN 200810241342 CN200810241342 CN 200810241342 CN 200810241342 A CN200810241342 A CN 200810241342A CN 101486610 B CN101486610 B CN 101486610B
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Abstract
The invention relates to a compound fertilizer production method free of drying procedure. The materials used in the method comprise: easily-melt nitrogenous fertilizers, other nitrogenous fertilizers, phosphate fertilizers, sylvite, and padding; the weight ratio of N, P2O5 and K2O in the product is 1:0 to 10: 0 to 10; and the product meets the requirements of the national standard GB15063-2001 for the compound fertilizer. The method comprises the following steps: a the easily-melt nitrogenous fertilizers of the matched proportion and one or more materials are put into a smelter according to a proportion of 1: 0 to 2 and mixed, added with water and heated, melted to form a mixed slurry with concentration of 90 to 99.8 percent and temperature between 90 and 170 DEG C; b the rest materials of the matched proportions are prepared into a material bed or the rest materials of the matched proportions are mixed with the returned materials formed in step e and prepared into a material bed; c.the mixed slurry obtained in step a is added into the material bed obtained in step b, and the steam of 0.1 to 1 MPa is used for assisting in granulation; d the grains obtained in step c are screened according to the required diameters and cooled into the finished product; and e. the large grains with diameters larger than 4.75mm obtained in step d are cracked and used as the returning materials together with the small grains with the diameters smaller than 1.00mm (or the large grains with the diameters larger than 5.60mm are cracked, and used as the returning materials together with the small grains with the diameters smaller than 3.35mm). The method is characterized by simple process, no need of drying device and drying procedure, low energy consumption, saving investment and operation cost, no drying tail gas, good operation environment, and no waste gas, waste liquid and solid wastes.
Description
Technical field
The present invention relates to the fertile working method of a kind of compound, be specifically related to a kind of compound fertilizer production method without drying process.
Background technology
Solid material production is adopted in the production that existing compound is fertile mostly; It is the base fertilizer raw materials mix that will contain nitrogen phosphorus potassium; Send into the rotary drum granulator granulation, the material after the granulation is directly delivered in the dry kiln dry, gets product through cooling, screening through the exsiccant material.Advantage simple to operate, easy master that this production technique has.But this technology is owing to need moisture big; The load of follow-up drying process is big; The dust escaped quantity is big, and production environment is bad, and health of operators is had bad influence; And because prilling temperature is low, this method is not suitable for the fertile production of compound of nitrogenous higher (as nitrogenous more than 20%).
Summary of the invention
The technical problem that the present invention will solve provides a kind of compound fertilizer production method without drying process, and this working method does not have drying process, and energy consumption is low, has saved investment and process cost, good operational environment, three-waste free discharge.
The present invention adopts following scheme to solve the problems of the technologies described above:
A kind of compound fertilizer production method without drying process is characterized in that, raw material comprises meltableization nitrogenous fertilizer, other nitrogenous fertilizer, phosphate fertilizer, sylvite and filler, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0～10: 0～10, and product meets the fertile standard GB 15063-2001 batching of compound and (more preferably presses the N in the products obtained therefrom: P during batching
2O
5: K
2The weight ratio of O is 1: 0～4: 0～4.8, and product meets the fertile standard GB 15063-2001 batching of compound).May further comprise the steps:
A. with other one or more raw materials in the easy fusing nitrogenous fertilizer of above-mentioned dosage and the above-mentioned batching according to being prone to fusing nitrogenous fertilizer: other one or more raw materials are that 1: 0～2 ratio places melting device to mix; And adding moisture; Heating and melting forms concentration and is 90～99.8%, temperature is 90～170 ℃ of mixed slurries;
B. the surplus stock with dosage is mixed with the material bed; Perhaps the surplus stock of dosage and the returning charge of step e formation are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product by the demand particle diameter;
E. with the particle diameter of steps d gained the big grain more than 4.75 millimeters pulverize and particle diameter the granule below 1.00 millimeters together as returning charge (perhaps particle diameter the big grain more than 5.60 millimeters pulverize and particle diameter at the granule below 3.35 millimeters together as returning charge).
Easy fusing nitrogenous fertilizer according to the invention refers at fusible nitrogenous fertilizer below 180 ℃, can select urea or an ammonium nitrate or nitrophosphate fertilizer or ammonium nitrate phosphate fertilizer or pin ammonium potash fertilizer for use.
Described other nitrogenous fertilizer are one or more in ammonium sulfate, the ammonium chloride.
Described phosphate fertilizer be in monoammonium phosphate, normal superphosphate, double superhosphate, diammonium phosphate, fused(calcium magnesium)phosphate, the precipitated superphosphate one or more.
Described sylvite is one or more in Repone K, the vitriolate of tartar.
Described filler is Paris white, kaolin powder etc. in the harmless no nutrient pulverulent material of farm crop one or more.
Be preferably formed concentration 95～99.8% among the step a, temperature is 95～160 ℃ of mixed slurries.
Compared with prior art, the present invention has following beneficial effect:
This technological process of production is simple, no drying process equipment, and energy consumption is low, has saved investment and process cost, does not have dried tail gas to produce good operational environment, three-waste free discharge.
Embodiment
Below in conjunction with some embodiments of the present invention the present invention is described further, but protection scope of the present invention is not limited in this.
Embodiment 1
Raw material is selected urea, monoammonium phosphate, Repone K, Paris white for use, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0.5: 1 batching, and filling a prescription is: 20-10-20.The weight proportion of raw material is: 39.1 parts in urea, 20.0 parts of monoammonium phosphates, 33.3 parts in Repone K, 7.6 parts of Paris whites.May further comprise the steps:
A. place melting device to mix for 4 parts with 5 parts in Repone K, Paris white in 39.1 parts in the urea of dosage, and add moisture, heating and melting forms concentration and is 90%, temperature is 90 ℃ of mixed slurries;
B. with the surplus stock of dosage: 20.0 parts of monoammonium phosphates, 28.3 parts in Repone K, 3.6 parts of returning charges that form with step e of Paris white are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product.
E. with the particle diameter of steps d gained the big grain more than 4.75 millimeters pulverize and particle diameter at the granule below 1.00 millimeters together as returning charge.
The various indexs of product meet GB15063-2001.
Embodiment 2
Raw material is selected urea, fused(calcium magnesium)phosphate, normal superphosphate, Repone K, kaolin powder for use, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0.5: 0.8 batching, and filling a prescription is: 15.0-7.5-12.0.The weight proportion of raw material is: 32.6 parts in urea, 12.0 parts in fused(calcium magnesium)phosphate, 33.0 parts of normal superphosphates, 20.0 parts in Repone K, 2.4 parts of kaolin powders.May further comprise the steps:
A. place melting device to mix for 15 parts with 3 parts in Repone K, normal superphosphate in 32.6 parts in the urea of dosage, and add steam, heating and melting forms concentration and is 95%, temperature is 110 ℃ of mixed slurries;
B. with the surplus stock of dosage: 12.0 parts in fused(calcium magnesium)phosphate, 18.0 parts of normal superphosphates, 16.0 parts in Repone K, 2.4 parts of returning charges that form with step e of kaolin powder are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product;
E. with the particle diameter of steps d gained the big grain more than 4.75 millimeters pulverize and particle diameter at the granule below 1.00 millimeters together as returning charge.
The various indexs of product meet GB15063-2001.
Embodiment 3
Raw material is selected ammonium nitrate phosphate fertilizer, monoammonium phosphate, Repone K, Paris white for use, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0.5: 1 batching, and filling a prescription is: 16-8-16.The weight proportion of raw material is: 45.9 parts in ammonium nitrate phosphate fertilizer, 13.0 parts of monoammonium phosphates, 26.6 parts in Repone K, 14.5 parts of Paris whites.May further comprise the steps:
A. place melting device to mix for 8 parts with 10.0 parts of monoammonium phosphates, Paris white stopping composition in 45.9 parts in the ammonium nitrate phosphate fertilizer of dosage, and add moisture, heating and melting forms concentration and is 98%, temperature is 150 ℃ of mixed slurries;
B. with the surplus stock of dosage: 3.0 parts of monoammonium phosphates, 26.6 parts in Repone K, 6.5 parts of returning charges that form with step e of Paris white are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product;
E. with the particle diameter of steps d gained the big grain more than 4.75 millimeters pulverize and particle diameter at the granule below 1.00 millimeters together as returning charge.
The various indexs of product meet GB15063-2001.
Embodiment 4
Raw material is selected urea, monoammonium phosphate, Repone K, Paris white for use, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0.5: 1 batching, and filling a prescription is: 20-10-20.The weight proportion of raw material is: 39.1 parts in urea, 20.0 parts of monoammonium phosphates, 33.3 parts in Repone K, 7.6 parts of Paris whites.May further comprise the steps:
A. place melting device to mix for 4 parts with 5 parts in Repone K, Paris white stopping composition in 39.1 parts in the urea of dosage, and add moisture, heating and melting forms concentration and is 90%, temperature is 90 ℃ of mixed slurries;
B. with the surplus stock of dosage: 20.0 parts of monoammonium phosphates, 28.3 parts in Repone K, Paris white stopping composition are hybridly prepared into the material bed for 3.6 parts;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product by desired particle size.
The various indexs of product meet GB15063-2001.
Embodiment 5
Raw material is selected urea, monoammonium phosphate, Repone K, Paris white for use, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0.5: 1 batching, and filling a prescription is: 20-10-20.The weight proportion of raw material is: 39.1 parts in urea, 20.0 parts of monoammonium phosphates, 33.3 parts in Repone K, 7.6 parts of Paris whites.May further comprise the steps:
A. the urea with dosage places melting device to mix for 39.1 parts, and adds moisture, and heating and melting forms concentration and be 90%, temperature is 90 ℃ of mixed slurries;
B. with the surplus stock of dosage: 20.0 parts of monoammonium phosphates, 33.3 parts in Repone K, 7.6 parts of returning charges that form with step e of Paris white are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product.
E. with the particle diameter of steps d gained the big grain more than 4.75 millimeters pulverize and particle diameter at the granule below 1.00 millimeters together as returning charge.
The various indexs of product meet GB15063-2001.
Embodiment 6
Raw material is selected urea, double superhosphate, Repone K, kaolin powder for use, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 4: 4.8 batching, and filling a prescription is: 5-20-24.The weight proportion of raw material is: 21 parts in urea, 40 parts of double superhosphate, 39 parts in Repone K.May further comprise the steps:
A. place melting device to mix for 20 parts with double superhosphate in 21 parts in the urea of dosage, and add steam, heating and melting forms concentration and is 95%, temperature is 120 ℃ of mixed slurries;
B. with the surplus stock of dosage: 20 parts of double superhosphate, 39 parts of returning charges that form with step e of Repone K are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product;
E. with the particle diameter of steps d gained the big grain more than 5.60 millimeters pulverize and particle diameter at the granule below 3.35 millimeters together as returning charge.
Embodiment 7
Raw material is selected urea, ammonium sulfate, Repone K, Paris white for use, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0: 0.19 batching, and filling a prescription is: 21-0-4.The weight proportion of raw material is: 40.0 parts in urea, 12.4 parts in ammonium sulfate, 6.6 parts in Repone K, 41.0 parts of Paris whites.May further comprise the steps:
A. place melting device to mix for 3 parts with Repone K in 45.6 parts in the urea of dosage, and add moisture, heating and melting forms concentration and is 99%, temperature is 125 ℃ of mixed slurries;
B. with the surplus stock of dosage: 12.4 parts in ammonium sulfate, 3.6 parts in Repone K, 41.0 parts of returning charges that form with step e of Paris white are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product.
E. with the particle diameter of steps d gained the big grain more than 4.75 millimeters pulverize and particle diameter at the granule below 1.00 millimeters together as returning charge.
The various indexs of product meet GB15063-2001.
Embodiment 8
Raw material is selected urea, monoammonium phosphate, Paris white for use, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0.19: 0 batching, and filling a prescription is: 21-4-0.The weight proportion of raw material is: 44.0 parts in urea, 8.0 parts of monoammonium phosphates, 48.0 parts of Paris whites.May further comprise the steps:
A. the urea with dosage places melting device to mix for 44.0 parts, and adds moisture, and heating and melting forms concentration and be 95%, temperature is 120 ℃ of mixed slurries;
B. with the surplus stock of dosage: 8.0 parts of monoammonium phosphates, 48.0 parts of returning charges that form with step e of Paris white are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product.
E. with the particle diameter of steps d gained the big grain more than 4.75 millimeters pulverize and particle diameter at the granule below 1.00 millimeters together as returning charge.
The various indexs of product meet GB15063-2001.
Claims (6)
1. a compound fertilizer production method without drying process is characterized in that, raw material comprises meltableization nitrogenous fertilizer, other nitrogenous fertilizer, phosphate fertilizer, sylvite and filler, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1: 0～10: 0～10, and product meets the fertile standard GB 15063-2001 batching of compound, may further comprise the steps:
A. with other one or more raw materials in the easy fusing nitrogenous fertilizer of above-mentioned dosage and the above-mentioned batching according to being prone to fusing nitrogenous fertilizer: other one or more raw materials are that 1: 0～2 ratio places melting device to mix; And adding moisture; Heating and melting forms concentration and is 90～99.8%, temperature is 90～170 ℃ of mixed slurries;
B. the surplus stock with dosage is mixed with the material bed; Perhaps the surplus stock of dosage and the returning charge of step e formation are hybridly prepared into the material bed;
C. step a gained mixed slurry is joined in the step b gained material bed, with the auxiliary pellet that is a granulated into of 0.1～1MPa steam;
D. step c gained pellet is sieved, is cooled to finished product by the demand particle diameter;
E. with the particle diameter of steps d gained the big grain more than 4.75 millimeters pulverize and particle diameter at the granule below 1.00 millimeters together as returning charge; Perhaps with the particle diameter of steps d gained the big grain more than 5.60 millimeters pulverize and particle diameter at the granule below 3.35 millimeters together as returning charge;
Described easy fusing nitrogenous fertilizer is urea or an ammonium nitrate or nitrophosphate fertilizer or ammonium nitrate phosphate fertilizer or pin ammonium potash fertilizer.
Described other nitrogenous fertilizer are one or more in ammonium sulfate, the ammonium chloride.
2. a kind of compound fertilizer production method without drying process according to claim 1 is characterized in that, described phosphate fertilizer be in monoammonium phosphate, normal superphosphate, double superhosphate, diammonium phosphate, fused(calcium magnesium)phosphate, the precipitated superphosphate one or more.
3. a kind of compound fertilizer production method without drying process according to claim 1 is characterized in that, described sylvite is one or more in Repone K, the vitriolate of tartar.
4. a kind of compound fertilizer production method without drying process according to claim 1 is characterized in that, described filler is one or more in Paris white, the kaolin powder.
5. a kind of compound fertilizer production method without drying process according to claim 1 is characterized in that, formation concentration 95～99.8%, temperature are 95～160 ℃ of mixed slurries among the step a.
6. a kind of compound fertilizer production method without drying process according to claim 1 is characterized in that, presses the N in the products obtained therefrom: P during batching
2O
5: K
2The weight ratio of O is 1: 0～4: 0～4.8, and product meets the fertile standard GB 15063-2001 batching of compound.
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| CN101486610B true CN101486610B (en) | 2012-07-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101973814B (en) * | 2010-10-15 | 2013-06-19 | 湖南省中科农业有限公司 | Pure white compound fertilizer and preparation process thereof |
| CN103664273A (en) * | 2012-09-02 | 2014-03-26 | 句容市农业技术推广中心 | Special-purpose fertilizer for peach trees |
| CN102992911A (en) * | 2012-12-31 | 2013-03-27 | 深圳市芭田生态工程股份有限公司 | Fertilizer and preparation method thereof |
| CN105754606A (en) * | 2016-03-04 | 2016-07-13 | 河南省惠丰肥业有限公司 | Spherical soil conditioner and production process thereof |
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| CN1403422A (en) * | 2002-10-14 | 2003-03-19 | 深圳市芭田生态工程股份有限公司 | Drum peletizing process of molten ammonium nitrate-urea slurry to produce granulated composite fertilizer |
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| CN1403422A (en) * | 2002-10-14 | 2003-03-19 | 深圳市芭田生态工程股份有限公司 | Drum peletizing process of molten ammonium nitrate-urea slurry to produce granulated composite fertilizer |
| CN1403423A (en) * | 2002-10-14 | 2003-03-19 | 深圳市芭田生态工程股份有限公司 | Low-tower molten slurry pelletizing method and apparatus to produce granulated multicomponent composite fertilizer |
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