CN1884222A - Method for producing complex fertilizer without drying process - Google Patents
Method for producing complex fertilizer without drying process Download PDFInfo
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- CN1884222A CN1884222A CN 200510026910 CN200510026910A CN1884222A CN 1884222 A CN1884222 A CN 1884222A CN 200510026910 CN200510026910 CN 200510026910 CN 200510026910 A CN200510026910 A CN 200510026910A CN 1884222 A CN1884222 A CN 1884222A
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- urea
- drying process
- manufacture method
- sylvite
- composite fertilizer
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Abstract
The invention discloses a manufacturing method of non-dried composite fertilizer, which comprises the following steps: a. adopting urea, potassium salt and ammonium phosphate as raw material; dispensing N:P2O5:K2O according to weight rate at 1-3:1:1; adding urea in the melter to heat; b. placing the urea and potassium salt to prepare urea-potassium salt slurry; c. placing the preheat ammonium phosphate and filler with certain proportional refeed in the graining machine to prepare material bed; d spraying the urea-potassium salt slurry in the material bed; graining; e. sieving the grain; cooling to obtain the product.
Description
Technical field
The present invention relates to a kind of manufacture method of chemical fertilizer, particularly a kind of manufacture method of not having the composite fertilizer of drying process.
Background technology
Compound manure has multiple manufacture method, as granulating method, biaxial granulation method, extruder grain method, full-fusing tower granulation method etc.Wherein, granulating method is a kind of traditional production method, needs introducing steam or water to carry out granulation, before becoming the finished product, also needs by one drying process, to remove moisture content wherein.Biaxial granulation method, extruder grain method, full-fusing tower granulation are owned by France in the compound fertilizer producing method of no drying process; the biaxial granulation method is the solid-state pulverulent material of part and operative liquid material are a granulated into irregular particle in the biaxial granulation machine after; again at a certain temperature by turnble polishing; through overcooling, screening, obtain the qualified particulate product of expectation particle diameter again.The extruder grain method is to utilize Squeezinggranulator, and the solid, powdery material is squeezed into the finished granule of certain particle diameter and shape, and the product cut size scope that this method is produced has bigger restriction, the equipment attrition height.After the employing of full-fusing tower granulation method was heated as molten state with all materials, by high tower air cooling granulation, there were shortcomings such as investment is big, solid materials vertical transport difficulty, the easy obstruction of prilling spry in this method.
Summary of the invention
Purpose of the present invention, being to overcome prior art does not have the problem that exists in the manufacture method of composite fertilizer of drying process, and a kind of manufacture method of composite fertilizer of new no drying process is provided.
The technical solution used in the present invention is: a kind of manufacture method of not having the composite fertilizer of drying process is a raw material with urea, sylvite, phosphorus ammonium, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1-3: 1: 1 batching, adopt the following steps manufacturing:
A, the urea of dosage is placed the melting device heating and melting;
B, add step a gained fusing urea and add the sylvite of dosage in the mixing tank of band heating unit, heated and stirred is made urea-sylvite slip;
C, with the phosphorus ammonium of dosage and filler through placing tablets press to be hybridly prepared into the material bed with a certain proportion of returning charge after the preheating;
D, step b gained urea-sylvite slip is injected in the step c gained material bed, is a granulated into pellet;
E, with steps d gained pellet screening, be cooled to finished product.
Above-mentioned step a and step b also can be merged into a step, and the sylvite that is about to the urea of dosage and dosage all adds in the melting device fusion and makes urea-sylvite slip.
Described sylvite comprises Repone K and vitriolate of tartar, and described phosphorus ammonium comprises monoammonium phosphate and diammonium phosphate.
The temperature of the urea described in the step b-sylvite slip is controlled at 110-140 ℃, preferred 120-130 ℃.
Filler described in the step c comprises rhombspar and Wingdale, and its add-on is the 0-16% of fertilizer total amount.
Returning charge described in the step c is the pellet of steps d gained.
The preheating temperature of phosphorus ammonium described in the step c and filler is controlled at 50-80 ℃.
Service temperature in the tablets press described in the step c is controlled at 100-115 ℃.
Grain-making machine described in the step c is granulating disc or rotary drum granulator.
Described sylvite adopts the following coccoid of particle diameter 0.5mm.
The present invention does not have the manufacture method of composite fertilizer of drying process owing to adopted above technical scheme, makes it compared with prior art, has following advantage and characteristics:
1, the anhydrous or aqueous solution adds in the manufacturing processed, need not drying process;
2, the powdery sylvite of required dosage all adds in the fusing urea, makes the required slip of granulation;
3, only need be heated to lower temperature (50-80 ℃), save energy as solid, powdery raw materials such as the phosphorus ammonium of expecting bed, fillers;
4, the compound manure that can make is wide in variety, and turndown ratio is big, N: P
2O
5: K
2The O scope can be by 1: 1: 1 to 3: 1: 1, even higher, is specially adapted to make the high-nitrogen compound fertilizer material;
5, manufacturing processed is simple, saved the investment and and the very high dehumidification system of process cost, facility investment is few, save energy has reduced production cost;
6, manufacturing processed makes full use of energy, and granulation water is low, the balling ratio height, and granule strength, roundness height, storage property is good;
7, overcome in the full-fusing tower granulation technology that investment is excessive, the easy shortcoming such as obstruction of solid materials vertical transport difficulty, prilling spry.
Description of drawings
Fig. 1 does not have the schema of manufacture method of the composite fertilizer of drying process for the present invention.
Fig. 2 does not have another schema of manufacture method of the composite fertilizer of drying process for the present invention.
Embodiment
The flow process of the manufacture method of the composite fertilizer of no drying process of the present invention such as Fig. 1 or shown in Figure 2 are not have several embodiment that the manufacture method of the composite fertilizer of drying process is produced according to the present invention below:
Embodiment 1:
Get 400 kg urea and place the Flashmelt device to be heated to more than 132 ℃, be melted into fusing urea.Add fusing urea in the mixing tank of band heating unit, add 110 kilograms of powdery Repone K simultaneously, temperature is controlled at 119-125 ℃, mixes to make urea-Repone K slip.In granulating disc, above-mentioned urea-Repone K slip is sprayed in the material bed of being made up of the returning charge that is preheating to 65 ℃ 120 kilograms powdery monoammonium phosphate and 280 kilograms, the service temperature in the control tablets press is 100-103 ℃, directly is a granulated into pellet.Then pellet is sieved, cools off, be finished product.N in the finished product: P
2O
5: K
2O is about 3: 1: 1.Concrete component is: N:31.74%; P
2O
5: 11.73%; K
2O:10.10%; Moisture content: 0.16%.Granule strength: 19.04N.
Embodiment 2:
Get 290 kg urea and place the Flashmelt device to be heated to more than 132 ℃, be melted into fusing urea.Add fusing urea in the mixing tank of band heating unit, add 125 kilograms of powdery Repone K simultaneously, temperature is controlled at 120-130 ℃, mixes to make urea-Repone K slip.In granulating disc; above-mentioned urea-Repone K slip is sprayed in the material bed of being made up of the returning charge of 120 kilograms powdered acid two ammoniums that are preheating to 75 ℃, 50 kilograms of powdered lime hardcores and 190 kilograms; service temperature in the control tablets press is 102-105 ℃, directly is a granulated into pellet.Then pellet is sieved, cools off, be finished product.N in the finished product: P
2O
5: K
2O is about 2: 1: 1.Concrete component is: N:27.44%; P
2O
5: 13.48%; K
2O:13.15%; Moisture content: 0.14%.Granule strength: 25.09N.
Embodiment 3:
Get 260 kg urea and 135 kilograms of powdery Repone K, place the Flashmelt device to be heated to more than 132 ℃, be melted into urea-Repone K slip.In granulating disc, above-mentioned urea-Repone K slip is sprayed in the material bed of being made up of the returning charge that is preheating to 80 ℃ 140 kilograms powdery monoammonium phosphate and 230 kilograms, the service temperature in the control tablets press is 105-108 ℃, directly is a granulated into pellet.Then pellet is sieved, cools off, be finished product.N in the finished product: P
2O
5: K
2O is about 1.5: 1: 1.Concrete component is: N:23.87%; P
2O
5: 15.98%; K
2O:15.50%; Moisture content: 0.14%.Granule strength: 26.54N.
Embodiment 4:
Get 200 kg urea and place the Flashmelt device to be heated to more than 132 ℃, be melted into fusing urea.Add fusing urea in the mixing tank of band heating unit, add 190 kilograms of powdery Repone K simultaneously, temperature is controlled at 125-130 ℃, mixes to make urea-Repone K slip.In granulating disc, above-mentioned urea-Repone K slip is sprayed in the material bed of being made up of the returning charge that is preheating to 60 ℃ 165 kilograms powdered acid two ammoniums and 230 kilograms, the service temperature in the control tablets press is 112-115 ℃, directly is a granulated into pellet.Then pellet is sieved, cools off, be finished product.N in the finished product: P
2O
5: K
2O is about 1: 1: 1.Concrete component is: N:18.80%; P
2O
5: 18.08%; K
2O:19.83%; Moisture content: 0.02%.Granule strength: 20.64N.
Embodiment 5:
Get 295 kg urea and place the Flashmelt device to be heated to more than 132 ℃, be melted into fusing urea.Add fusing urea in the mixing tank of band heating unit, add 125 kilograms of powdery Repone K simultaneously, temperature is controlled at 130-135 ℃, mixes to make urea-Repone K slip.In rotary drum granulator; above-mentioned urea-Repone K slip is sprayed in the material bed of being made up of the returning charge of 135 kilograms the powdery monoammonium phosphate that is preheating to 55 ℃, 70 kilograms powdery rhombspar filler and 230 kilograms; service temperature in the control tablets press is 110-113 ℃, directly is a granulated into pellet.Then pellet is sieved, cools off, be finished product.N in the finished product: P
2O
5: K
2O is about 2: 1: 1.Concrete component is: N:22.84%; P
2O
5: 11.02%; K
2O:11.35%; Moisture content: 0.12%.Granule strength: 22.39N.
Claims (10)
1, a kind of manufacture method of not having the composite fertilizer of drying process is characterized in that: with urea, sylvite, phosphorus ammonium is raw material, presses the N in the products obtained therefrom: P
2O
5: K
2The weight ratio of O is 1-3: 1: 1 batching, adopt the following steps manufacturing:
A, the urea of dosage is placed the melting device heating and melting;
B, add step a gained fusing urea and add the sylvite of dosage in the mixing tank of band heating unit, heated and stirred is made urea-sylvite slip;
C, with the phosphorus ammonium of dosage and filler through placing tablets press to be hybridly prepared into the material bed with a certain proportion of returning charge after the preheating;
D, step b gained urea-sylvite slip is injected in the step c gained material bed, is a granulated into pellet;
E, with steps d gained pellet screening, be cooled to finished product.
2, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1, it is characterized in that: described step a and step b are merged into a step, the sylvite of the urea of dosage and dosage is all added in the melting device fusion make urea-sylvite slip.
3, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1 or 2 is characterized in that: described sylvite comprises Repone K and vitriolate of tartar, and described phosphorus ammonium comprises monoammonium phosphate and diammonium phosphate.
4, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1 or 2 is characterized in that: the temperature of the urea described in the step b-sylvite slip is controlled at 119-140 ℃, preferred 120-130 ℃.
5, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1 or 2 is characterized in that: the filler described in the step c comprises rhombspar and Wingdale, and its add-on is the 0-16% of fertilizer total amount.
6, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1 or 2 is characterized in that: the returning charge described in the step c is the pellet of steps d gained.
7, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1 or 2 is characterized in that: the preheating temperature of phosphorus ammonium described in the step c and filler is controlled at 50-80 ℃.
8, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1 or 2 is characterized in that: the service temperature in the tablets press described in the step c is controlled at 100-115 ℃.
9, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1 or 2 is characterized in that: the grain-making machine described in the step c is granulating disc or rotary drum granulator.
10, the manufacture method of the composite fertilizer of no drying process as claimed in claim 1 or 2 is characterized in that: described sylvite adopts the following coccoid of particle diameter 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100269108A CN100400475C (en) | 2005-06-20 | 2005-06-20 | Method for producing complex fertilizer without drying process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100269108A CN100400475C (en) | 2005-06-20 | 2005-06-20 | Method for producing complex fertilizer without drying process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1884222A true CN1884222A (en) | 2006-12-27 |
| CN100400475C CN100400475C (en) | 2008-07-09 |
Family
ID=37582542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100269108A Active CN100400475C (en) | 2005-06-20 | 2005-06-20 | Method for producing complex fertilizer without drying process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100400475C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633582A (en) * | 2008-07-25 | 2010-01-27 | 四川蓥峰实业有限公司 | Method for manufacturing formula compound fertilizer |
| CN101973814A (en) * | 2010-10-15 | 2011-02-16 | 湖南省中科农业有限公司 | Pure white compound fertilizer and preparation process thereof |
| CN103910556A (en) * | 2013-10-31 | 2014-07-09 | 湖北景程化工有限公司 | Energy-saving environment-friendly production technology for compound fertilizer |
| CN104788164A (en) * | 2015-04-21 | 2015-07-22 | 苏州市新泾村农业基地专业合作社 | Special fertilizer for strawberries as well as preparation method and fertilizing method of fertilizer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11314991A (en) * | 1998-05-01 | 1999-11-16 | Nippon Godo Hiryo Kk | Production of slow-release granular fertilizer |
| CN1138728C (en) * | 1998-06-02 | 2004-02-18 | 朱永绥 | Method for producing urea-formaldehyde compound fertilizer |
| US6254655B1 (en) * | 1999-03-18 | 2001-07-03 | Oms Investments, Inc. | Processes for preparing granular composite fertilizer compositions and products produced thereby |
| ITMI20011831A1 (en) * | 2001-08-30 | 2003-03-02 | Sadepan Chimica S R L | PROCEDURE FOR THE PRODUCTION OF AZIOATED AND COMPLEX FERTILIZERS, EVEN WITH MICROELEMENTS, IN HIGH SPHERICAL GRANULAR FORM WITH HIGH HOMOGENEOUS |
-
2005
- 2005-06-20 CN CNB2005100269108A patent/CN100400475C/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633582A (en) * | 2008-07-25 | 2010-01-27 | 四川蓥峰实业有限公司 | Method for manufacturing formula compound fertilizer |
| CN101973814A (en) * | 2010-10-15 | 2011-02-16 | 湖南省中科农业有限公司 | Pure white compound fertilizer and preparation process thereof |
| 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 |
| CN103910556A (en) * | 2013-10-31 | 2014-07-09 | 湖北景程化工有限公司 | Energy-saving environment-friendly production technology for compound fertilizer |
| CN103910556B (en) * | 2013-10-31 | 2016-04-27 | 湖北景程化工有限公司 | Energy saving and environment friendly Compound fertilizer production technology |
| CN104788164A (en) * | 2015-04-21 | 2015-07-22 | 苏州市新泾村农业基地专业合作社 | Special fertilizer for strawberries as well as preparation method and fertilizing method of fertilizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100400475C (en) | 2008-07-09 |
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Address after: 200062 Shanghai Yunling Road No. 345 Patentee after: Shanghai Chemical Research Institute Co., Ltd. Address before: 200062 Shanghai Yunling Road No. 345 Patentee before: Shanghai Research Institute of Chemical Industry |
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