CN102850102A - Preparation method for water-soluble fertilizer through high tower melt granulation - Google Patents
Preparation method for water-soluble fertilizer through high tower melt granulation Download PDFInfo
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Abstract
The invention relates to a preparation method for a water-soluble fertilizer through high tower melt granulation. The method comprises the following steps: adding ammonium nitrate or a mixture containing ammonium nitrate into a melting tank, individually adding ammonium phosphate and water or adding a mixture of ammonium phosphate and water to reduce the melting point of ammonium nitrate and carrying out melting at a temperature of 140 to 145 DEG C; delivering a molten slurry into a mixing system, adding a nitrogenous fertilizer, a phosphate fertilizer, a potash fertilizer and water-soluble trace elements needed in preparation of a fertilizer and carrying out uniform mixing at a temperature of 145 to 152 DEG C; and carrying out emulsification, granulation, heat exchange, primary cooling, cooling, screening and oil injection to obtain the water-soluble fertilizer with the content of water-insoluble substances controlled to be less than 3.0%. The preparation method provided by the invention effectively reduces production of water-insoluble substances through controlling of temperature, has the advantages of novelty, environment-friendliness, low energy consumption and the like and prepares the water-soluble fertilizer which has a smooth and round shape and high strength, does not harden during storage and contains 35 to 48% of total nutrients on the basis of no increase of cost.
Description
Technical field
The present invention relates to the preparation method of high tower fused melt granulated compound fertilizer material technical field, particularly a kind of high tower fused melt granulated water soluble composite fertilizer.
Background technology
The preparation method of high tower nitrate-based compound fertilizer is: take ammonium nitrate melt or contain the ammonium nitrate mixture melts as liquid phase, add nitrogenous fertilizer, phosphate fertilizer, potash fertilizer, water soluble trace elements, in mixing system, fully mix, carry out granulation through entering again granulating system behind the emulsor, then by in tower body, carrying out heat exchange, first cooling formation light rounded grain, obtain the fertilizer finished product finally by cooling, screening, injection system.Because raw material easily produces the insoluble substances such as calcium salt, magnesium salts after through high-temperature fusion on the tower, bring certain difficulty for the preparation of high tower water soluble fertilizer, the fertilizer water-insoluble for preparing is more than 6%, and slag is a lot.
In addition, in the preparation process of existing high tower nitre sulfenyl because the temperature on the tower need to be controlled at about 156 ℃, part in addition be controlled at 160 ℃, higher temperature forms water-insoluble so that side reaction easily occurs the material on the tower.
Hence one can see that, causes the high major cause of water-insoluble of the preparation of high tower nitrate-based compound fertilizer that following 2 points are arranged: the first, and water insoluble matter content exceeds standard in the starting material; The second, the water insoluble matter content that improper operation causes in the preparation process increases.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of high tower fused melt granulated water soluble fertilizer production method.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. ammonium nitrate or the mixture that contains ammonium nitrate add are melted groove, add phosphoric acid salt and water in mode independent or that mix, under 140 ℃-145 ℃ temperature condition, melt, wherein ammonium nitrate or contain the mixture of ammonium nitrate and the usage ratio of ammonium phosphate salt is 19:1-2.33:1;
B. the melting charge slurry that step a is produced is sent into mixing system, after the needed nitrogenous fertilizer of interpolation preparation fertilizer, phosphate fertilizer, potash fertilizer, the water soluble trace elements, mixes under 145 ℃-152 ℃ temperature condition;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the mixed slurry that step c is produced is sent into granulating system and is carried out granulation,, obtain finished product after the work in-process process heat exchange after the granulation, preliminary cooling, cooling, screening, oil spout, the packing.
The used tower body of technical solution of the present invention is a kind of in cement structures tower or the steel structure tower.
Cause material generation side reaction to form water-insoluble for high temperature on the tower of the preparation process existence that has high tower nitre sulfenyl now, the purpose that adds phosphoric acid salt material and a small amount of water in mode independent or that mix is, can reduce the fusing point of ammonium phosphate salt and ammonium nitrate phosphoric acid salt blend or reduce ammonium nitrate and contain the fusing point of ammonium nitrate mixture, fusion processes can be carried out between 140 ℃-145 ℃ of temperature that is significantly less than the ammonium nitrate fusing point, realize reducing the control temperature on the high tower and reduce ammonium nitrate and contain the purpose that the water-insoluble that causes after ammonium nitrate mixture melts produces with this.
After mixing system, install emulsifying device additional, can make material obtain sufficient fragmentation, dispersion, emulsification, homogeneous, further reduce the generation that mixes particle water-insoluble in the fused matter material.
The used cooling apparatus of technical solution of the present invention comprises one or more in air rotating cylinder cooling cylinder, vibrated fluidized bed water cooler, the ebullated bed water cooler, and screening plant comprises one or more in linear vibrating screen, the reciprocating oscillating screen.
Because stopping composition is not used in the preparation of high tower nitre sulfenyl, but more make land used nutrient raw material, therefore, often need to reduce with the macropore granulating equipment obstruction of granulating equipment, and the used granulating system of technical solution of the present invention is to use the wide aperture spray between the 2.5-3.0mm blue, can effectively avoid because using ammonium sulfate too much to stop up the problem of shower nozzle.
Ammonium nitrate described above or the addition that contains the mixture of ammonium nitrate account for the gross weight 34%-68% that feeds intake, and water insoluble matter content is below 0.8%.
Phosphoric acid salt described above comprises one or both of monoammonium phosphate, diammonium phosphate.
Phosphatic addition described above accounts for 3.4%-20.8% of the gross weight that feeds intake, and requires water insoluble matter content below 2.0%.
The addition of water described above accounts for the 0.1%-5% of the gross weight that feeds intake.
Comprise in ammonium nitrate, ammonium nitrate mixture, ammonium sulfate, bicarbonate of ammonia, ammonium chloride, the saltpetre one or more such as the nitrogenous fertilizer of above-mentioned adding, the addition of nitrogenous fertilizer accounts for the 0.1%-28% of the gross weight that feeds intake, and requires water insoluble matter content below 0.8%.
Comprise in monoammonium phosphate, diammonium phosphate, potassium primary phosphate, fused(calcium magnesium)phosphate, general calcium, the coarse whiting one or more such as the phosphate fertilizer of above-mentioned adding, the addition of phosphate fertilizer accounts for the 0.1%-28.6% of the gross weight that feeds intake, and requires water insoluble matter content below 2.0%.
Comprise in Repone K, vitriolate of tartar, potassium primary phosphate, saltpetre, the potassium magnesium sulfate one or more such as the potash fertilizer of above-mentioned adding, the addition of potash fertilizer accounts for the 0.1%-50% of the gross weight that feeds intake, and requires water insoluble matter content below 1.0%.
Be in water-soluble manganic compound, magnesium compound, molybdenum compound, zn cpds, iron cpd, copper compound, the boron compound one or more such as the water soluble trace elements of above-mentioned adding, its addition accounts for the 0.5%-4% of the gross weight that feeds intake.
Above monoammonium phosphate for phosphate fertilizer, diammonium phosphate, although employed monoammonium phosphate when adding ammonium phosphate salt with the former, diammonium phosphate are identical, but the purpose that the former with the latter adds is different, the purpose that the former adds is in order to reduce the fusing point of ammonium nitrate, and then indirectly increases the phosphorus content of water soluble fertilizer as phosphate fertilizer.
Above for nitrogenous fertilizer, phosphate fertilizer, the reusable saltpetre of potash fertilizer and potassium primary phosphate, owing to being to use as different fertilizer, therefore, water insoluble matter content will change to some extent according to the requirement of its corresponding fertilizer.
Beneficial effect of the present invention is: by separately or mix and add the melting temperature (Tm) that ammonium phosphate salt and a small amount of water reduce ammonium nitrate, carry out so that fusion processes can be controlled at the temperature that is lower than about 29 ℃ of ammonium nitrate fusing points, reduce ammonium nitrate and contain the water-insoluble that causes after ammonium nitrate mixture melts producing.The employed raw-material water insoluble matter content of strict restriction is finally prepared and is not used stopping composition, water insoluble matter content at the water soluble fertilizer below 3.0% simultaneously.
The present invention realizes reducing the generation of water-insoluble by the temperature condition in the control preparation process, belong to widely used temperature production and cleaner production, on the basis that does not increase cost, prepare the nitro high tower water soluble fertilizer that fertilizer light is round, intensity is high, the stock is not hardened, contain the 35%-48% total nutrient simultaneously.
Description of drawings
Fig. 1 is preparation method's of the present invention process flow diagram.
Embodiment
Below in conjunction with specific embodiment the present invention is done further to specify in detail, note that any equivalent transformation that thinking according to the present invention is done all belongs to protection scope of the present invention.
Embodiment 1
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the melting groove at 0.6 ton of ammonium nitrate and 2.9 tons of mixtures that contain ammonium nitrate below 0.8%, and add water insoluble matter content at 1 ton of monoammonium phosphate below 2.0%, under 140 ℃-145 ℃ temperature condition, melt;
B. ammonium nitrate, the monoammonium phosphate that step a is produced melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content 0.65 ton in the ammonium sulfate below 0.8%, water insoluble matter content at 1.9 tons of the monoammonium phosphates below 2.0%, water insoluble matter content behind 0.1 ton of the water soluble trace elements magnesium sulfate monohydrate of 2.85 tons of the vitriolate of tartar below 1.0%, magnesium-containing compound, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 45.79% finished product, the ratio of nitrogen phosphorus potassium is 15.93:14.90:14.96 in the finished product.
Embodiment 2
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the melting groove at 0.7 ton of ammonium nitrate and 2.3 tons of mixtures that contain ammonium nitrate below 0.8%, and add water insoluble matter content at 1.2 tons of monoammonium phosphates below 2.0%, under 140 ℃-145 ℃ temperature condition, melt;
B. ammonium nitrate, the monoammonium phosphate that step a is produced melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content 0.4 ton in the ammonium sulfate below 0.8%, water insoluble matter content at 2 tons of the monoammonium phosphates below 2.0%, water insoluble matter content behind 0.1 ton of the water soluble trace elements borax of 1.65 tons of vitriolate of tartar below 1.0% and 1.65 tons of saltpetre, boron-containing compound, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 48.25% finished product, nitrogen phosphoris and potassium fertilizer ratio is 16.25:16.08:15.92 in the finished product.
Embodiment 3
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the melting groove at 0.6 ton of ammonium nitrate and 2.9 tons of mixtures that contain ammonium nitrate below 0.8%, and add 20kg water, under 140 ℃-145 ℃ temperature condition, melt;
B. step a is produced contain ammonium nitrate melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content 0.65 ton in the ammonium sulfate below 0.8%, water insoluble matter content at 2.9 tons of the monoammonium phosphates below 2.0%, water insoluble matter content behind 0.1 ton of the water soluble trace elements Zinc Sulphate Monohydrate of 2.85 tons of the vitriolate of tartar below 1.0%, zinc compound, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 45.79% finished product, nitrogen phosphoris and potassium fertilizer ratio is 15.93:14.90:14.96 in the finished product.
Embodiment 4
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the melting groove at 0.6 ton of ammonium nitrate and 2.9 tons of mixtures that contain ammonium nitrate below 0.8%, and add 20kg water and water insoluble matter content in 1 ton of diammonium phosphate below 2.0%, under 140 ℃-145 ℃ temperature condition, melt;
B. ammonium nitrate, the diammonium phosphate that step a is produced melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content 0.1 ton in the ammonium sulfate below 0.8%, water insoluble matter content at 1.6 tons of the monoammonium phosphates below 2.0%, water insoluble matter content behind 0.1 ton of the water soluble trace elements Zinc Sulphate Monohydrate of 2.4 tons of the vitriolate of tartar below 1.0%, zinc compound, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 45.30% finished product, nitrogen phosphoris and potassium fertilizer ratio is 16.52:14.62:14.16 in the finished product.
Embodiment 5
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the melting groove at 0.6 ton of ammonium nitrate and 2.9 tons of mixtures that contain ammonium nitrate below 0.8%, and add 20kg water and water insoluble matter content in 1 ton of diammonium phosphate below 2.0%, under 140 ℃-145 ℃ temperature condition, melt;
B. ammonium nitrate, the diammonium phosphate that step a is produced melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content 0.1 ton of the ammonium chloride below 0.8%, water insoluble matter content at 1.6 tons of the monoammonium phosphates below 2.0%, water insoluble matter content behind 0.1 ton of the water soluble trace elements Zinc Sulphate Monohydrate of 2.4 tons of the vitriolate of tartar below 1.0%, zinc compound, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 45.75% finished product, nitrogen phosphoris and potassium fertilizer ratio is 16.97:14.62:14.16 in the finished product.
Embodiment 6
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the melting groove at 1.0 tons of ammonium nitrate and 7 tons of mixtures that contain ammonium nitrate below 0.8%, and add 30kg water, under 140 ℃-145 ℃ temperature condition, melt;
B. step a is produced contain ammonium nitrate melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content at 2 tons of the potassium primary phosphates below 2.0%, water insoluble matter content behind 0.1 ton of the water soluble trace elements anhydrous cupric sulfate of 2.4 tons of the vitriolate of tartar below 1.0%, copper-containing compound, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 48.76% finished product, the ratio of nitrogen phosphorus potassium is 19.33:11.63:17.8 in the finished product.
Embodiment 7
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the melting groove at 0.6 ton of ammonium nitrate and 2 tons of mixtures that contain ammonium nitrate below 0.8%, and add 20kg water and water insoluble matter content in 1 ton of diammonium phosphate below 2.0%, under 140 ℃-145 ℃ temperature condition, melt;
B. ammonium nitrate, the diammonium phosphate that step a is produced melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content at 0.1 ton of the ammonium chloride below 0.8%, water insoluble matter content behind 0.1 ton of the water soluble trace elements anhydrous cupric sulfate of 3.7 tons in the saltpetre below 1.0%, copper-containing compound, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 48.32% finished product, nitrogen phosphoris and potassium fertilizer ratio is 20.42:6.54:21.36 in the finished product.
Embodiment 8
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the adding melting groove at 0.6 ton of ammonium nitrate and 3 tons of mixtures that contain ammonium nitrate below 0.8%, and add 25kg water and water insoluble matter content at 1.5 tons of monoammonium phosphates below 2.0%, under 140 ℃-145 ℃ temperature condition, melt;
B. ammonium nitrate, the monoammonium phosphate that step a is produced melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content 0.1 ton in the ammonium sulfate below 0.8%, water insoluble matter content at 0.5 ton of the monoammonium phosphate below 2.0%, water insoluble matter content behind 0.1 ton of the water soluble trace elements Zinc Sulphate Monohydrate of 3 tons in the Repone K below 1.0%, zinc compound, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 47.62% finished product, nitrogen phosphoris and potassium fertilizer ratio is 15.34:11.57:20.70 in the finished product.
Embodiment 9
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the adding melting groove at 0.6 ton of ammonium nitrate and 2.9 tons of mixtures that contain ammonium nitrate below 0.8%, and add 20kg water and water insoluble matter content in 1 ton of diammonium phosphate below 2.0%, under 140 ℃-145 ℃ temperature condition, melt;
B. ammonium nitrate, the diammonium phosphate that step a is produced melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content 0.1 ton in the ammonium sulfate below 0.8%, water insoluble matter content 1.6 tons of the monoammonium phosphates below 2.0%, water insoluble matter content 2.4 tons of the vitriolate of tartar below 1.0%, contain 0.1 ton of the water soluble trace elements manganous sulfate of manganic compound after, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 45.30% finished product, nitrogen phosphoris and potassium fertilizer ratio is 15.52:14.62:14.16 in the finished product.
Embodiment 10
A kind of preparation method of high tower fused melt granulated water soluble fertilizer, the method comprises the steps:
A. water insoluble matter content is joined by lift in the adding melting groove at 0.6 ton of ammonium nitrate and 2.9 tons of mixtures that contain ammonium nitrate below 0.8%, and add 20kg water and water insoluble matter content in 1 ton of diammonium phosphate below 2.0%, under 140 ℃-145 ℃ temperature condition, melt;
B. ammonium nitrate, the diammonium phosphate that step a is produced melt altogether slip by overflow to mixing system, in the one-level of mixing system, secondary tempering tank by lift add water insoluble matter content 0.1 ton in the ammonium sulfate below 0.8%, water insoluble matter content at 1.6 tons of the monoammonium phosphates below 2.0%, water insoluble matter content behind 0.1 ton in the water soluble trace elements ferrous sulfate of 2.4 tons of the vitriolate of tartar below 1.0%, iron containing compounds, under 145 ℃-152 ℃ temperature condition, mix;
C. the mixed slurry that step b is produced is sent into and is progressively carried out fragmentation, dispersion, emulsification, homogeneous in the emulsifying system, forms the emulsification slip;
D. the emulsification slip that step c is produced is sent into granulating system and is carried out granulation, work in-process after the granulation in tower body through heat exchange, tentatively cool off, deliver to the collection bucket at the bottom of the tower, then through behind cooling system, screening system, the anti-compaction face powder injection system, be packaged to be at last total nutrient and be 45.30% finished product, nitrogen phosphoris and potassium fertilizer ratio is 15.52:14.62:14.16 in the finished product.
The finished product that above embodiment 1-10 preparation method is obtained carries out the mensuration of following water insoluble matter content:
Take by weighing 4-5g sample (being accurate to 0.001g) and place the 500ml beaker, add 250ml water, leave standstill 5min, after the abundant disintegration of fertilizer, fully stir 3min, leave standstill 15min, with the glass pot formula strainer suction filtration that in 110 ℃ ± 2 ℃ loft drier, is dried in advance constant weight, first supernatant liquor has been filtered, then with a small amount of water residue is all moved in the strainer, will place with the strainer of residue 110 ℃ ± 2 ℃ loft drier inner drying 1h, take out in the immigration moisture eliminator, be cooled to room temperature, weigh.Following table is the measurement result of the water insoluble matter content of the finished product that obtains of embodiment 1-10 preparation method:
| Embodiment | Water insoluble matter content (%) |
| 1 | 1.05 |
| 2 | 1.25 |
| 3 | 0.96 |
| 4 | 1.12 |
| 5 | 1.24 |
| 6 | 0.86 |
| 7 | 0.76 |
| 8 | 0.95 |
| 9 | 1.22 |
| 10 | 1.24 |
Claims (10)
1. the preparation method of a high tower fused melt granulated water soluble fertilizer is characterized in that:
Described method comprises the steps:
A. ammonium nitrate or the mixture that contains ammonium nitrate add are melted groove, add ammonium phosphate salt and water in mode independent or that mix, under 140 ℃-145 ℃ temperature condition, melt, wherein ammonium nitrate or contain the mixture of ammonium nitrate and the usage ratio of ammonium phosphate salt is 19:1-2.33:1;
B. the melting charge slurry that step a is produced is sent into mixing system, after the needed nitrogenous fertilizer of interpolation preparation fertilizer, phosphate fertilizer, potash fertilizer, the water soluble trace elements, mixes under 145 ℃-152 ℃ temperature condition;
C. the mixed slurry that step b is produced is sent into granulating system and is carried out granulation.
2. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1, it is characterized in that: comprise between described step b and the step c mixed slurry that produces is sent into emulsifying system, after forming the emulsification slip, send into again granulating system and carry out granulation.
3. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1 is characterized in that: described ammonium nitrate or the addition that contains the mixture of ammonium nitrate account for the gross weight 34%-68% that feeds intake, and require water insoluble matter content below 0.8%.
4. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1, it is characterized in that: described ammonium phosphate salt comprises one or both of monoammonium phosphate, diammonium phosphate.
5. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1, it is characterized in that: the addition of described ammonium phosphate salt accounts for 3.4%-20.8% of the gross weight that feeds intake, and requires water insoluble matter content below 2.0%.
6. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1, it is characterized in that: the addition of described water accounts for 0.1%-5% of the gross weight that feeds intake.
7. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1, it is characterized in that: the nitrogenous fertilizer of described adding comprises one or more in ammonium nitrate, ammonium nitrate mixture, ammonium sulfate, bicarbonate of ammonia, ammonium chloride, the saltpetre, the addition of nitrogenous fertilizer accounts for the 0.1%-28% of the gross weight that feeds intake, and requires water insoluble matter content below 0.8%.
8. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1, it is characterized in that: the phosphate fertilizer of described adding comprises one or more in monoammonium phosphate, diammonium phosphate, potassium primary phosphate, fused(calcium magnesium)phosphate, general calcium, the coarse whiting, the addition of phosphate fertilizer accounts for the 0.1%-28.6% of the gross weight that feeds intake, and requires water insoluble matter content below 2.0%.
9. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1, it is characterized in that: the potash fertilizer of described adding comprises one or more in Repone K, vitriolate of tartar, potassium primary phosphate, saltpetre, the potassium magnesium sulfate, the addition of potash fertilizer accounts for the 0.1%-50% of the gross weight that feeds intake, and requires water insoluble matter content below 1.0%.
10. the preparation method of a kind of high tower fused melt granulated water soluble fertilizer according to claim 1, it is characterized in that: the water soluble trace elements of described adding is one or more in water-soluble manganic compound, magnesium compound, molybdenum compound, zn cpds, iron cpd, copper compound, the boron compound, and the addition of water soluble trace elements accounts for the 0.5%-4% of the gross weight that feeds intake.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319238A (en) * | 2013-06-19 | 2013-09-25 | 菏泽金正大生态工程有限公司 | Water soluble fertilizer and preparation method thereof |
| CN103524179A (en) * | 2013-10-22 | 2014-01-22 | 四川金象赛瑞化工股份有限公司 | Acid mixed nitrogenous fertilizer produced by adopting ammonium nitrate and ammonium sulfate as main materials and preparation method thereof |
| CN104030752A (en) * | 2014-05-16 | 2014-09-10 | 贵港市芭田生态有限公司 | Production method of water-soluble fertilizer containing trace elements |
| CN104496624A (en) * | 2015-01-13 | 2015-04-08 | 四川美丰化工股份有限公司 | Method and device for producing high tower nitryl compound fertilizer |
| CN104692879A (en) * | 2015-03-20 | 2015-06-10 | 路永宽 | Method of producing water soluble ammonium phosphor nitrate through disc granulation |
| CN104926374A (en) * | 2015-06-30 | 2015-09-23 | 河北冀衡赛瑞化工有限公司 | Production method for sulfur-based nitrate nitrogen fertilizer |
| CN105272477A (en) * | 2015-11-17 | 2016-01-27 | 深圳市芭田生态工程股份有限公司 | Water-soluble ammonium polyphosphate NPK compound fertilizer and preparation method thereof |
| CN108575678A (en) * | 2018-03-20 | 2018-09-28 | 中国水利水电科学研究院 | A kind of metering irrigation rig based on crop water requirement |
| CN109180287A (en) * | 2018-11-28 | 2019-01-11 | 四川金象赛瑞化工股份有限公司 | A kind of fertilizer special for peanuts and preparation method thereof |
| CN111574276A (en) * | 2020-04-23 | 2020-08-25 | 陈志付 | Special nitrogen-potassium topdressing fertilizer for nitro-sulfenyl vegetables and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319238A (en) * | 2013-06-19 | 2013-09-25 | 菏泽金正大生态工程有限公司 | Water soluble fertilizer and preparation method thereof |
| CN103524179A (en) * | 2013-10-22 | 2014-01-22 | 四川金象赛瑞化工股份有限公司 | Acid mixed nitrogenous fertilizer produced by adopting ammonium nitrate and ammonium sulfate as main materials and preparation method thereof |
| CN103524179B (en) * | 2013-10-22 | 2015-04-22 | 四川金象赛瑞化工股份有限公司 | Acid mixed nitrogenous fertilizer produced by adopting ammonium nitrate and ammonium sulfate as main materials and preparation method thereof |
| CN104030752A (en) * | 2014-05-16 | 2014-09-10 | 贵港市芭田生态有限公司 | Production method of water-soluble fertilizer containing trace elements |
| CN104496624B (en) * | 2015-01-13 | 2017-07-18 | 四川美丰化工股份有限公司 | A kind of method and device for producing high tower nitro-compound fertilizer |
| CN104496624A (en) * | 2015-01-13 | 2015-04-08 | 四川美丰化工股份有限公司 | Method and device for producing high tower nitryl compound fertilizer |
| CN104692879A (en) * | 2015-03-20 | 2015-06-10 | 路永宽 | Method of producing water soluble ammonium phosphor nitrate through disc granulation |
| CN104926374A (en) * | 2015-06-30 | 2015-09-23 | 河北冀衡赛瑞化工有限公司 | Production method for sulfur-based nitrate nitrogen fertilizer |
| CN105272477A (en) * | 2015-11-17 | 2016-01-27 | 深圳市芭田生态工程股份有限公司 | Water-soluble ammonium polyphosphate NPK compound fertilizer and preparation method thereof |
| CN108575678A (en) * | 2018-03-20 | 2018-09-28 | 中国水利水电科学研究院 | A kind of metering irrigation rig based on crop water requirement |
| CN108575678B (en) * | 2018-03-20 | 2023-11-24 | 中国水利水电科学研究院 | Metering irrigation device based on crop water demand |
| CN109180287A (en) * | 2018-11-28 | 2019-01-11 | 四川金象赛瑞化工股份有限公司 | A kind of fertilizer special for peanuts and preparation method thereof |
| CN111574276A (en) * | 2020-04-23 | 2020-08-25 | 陈志付 | Special nitrogen-potassium topdressing fertilizer for nitro-sulfenyl vegetables and preparation method thereof |
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