CN104030752A - Production method of water-soluble fertilizer containing trace elements - Google Patents
Production method of water-soluble fertilizer containing trace elements Download PDFInfo
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- CN104030752A CN104030752A CN201410208091.8A CN201410208091A CN104030752A CN 104030752 A CN104030752 A CN 104030752A CN 201410208091 A CN201410208091 A CN 201410208091A CN 104030752 A CN104030752 A CN 104030752A
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Abstract
The invention discloses a production method of a high-tower type water-soluble fertilizer containing trace elements. The production method comprises the steps: adding an ammonium nitrate raw material and ammonium phosphate salts into water, melting with the melting temperature of larger than or equal to 135 DEG C and less than 150 DEG C, then mixing the co-molten material slurry after melting with fertilizers needed for production of the compound fertilizer, adding water-soluble trace element-containing compounds, after uniformly mixing, emulsifying to form an emulsion material slurry, granulating, and cooling to obtain the water-soluble fertilizer. The content of zinc is controlled in 500-700 ppm. The water-soluble fertilizer produced by the method has the advantages of uniform nutrients, smooth and round appearance, rapid dissolving speed and good water solubility, and allows water insoluble substances to be within 3.0%. The production method belongs to a novel, environmental-protection and low-energy-consumption production method for high-tower production of particle water-soluble fertilizers.
Description
Technical field
The invention belongs to containing the fertile high tower production technical field of trace element water-soluble, relate to a kind of containing the fertile high tower graining method for producing that uses of trace element water-soluble.
Background technology
The water-soluble fertile production of high tower nitre sulfenyl is taking ammonium nitrate melt or contain ammonium nitrate mixture melts as liquid phase, and prilling temperature is high, in high tower nitro product, adds microelement product less at present.In existing high tower nitre sulfenyl is produced, because temperature on tower need be controlled at 150 DEG C of-170 DEG C of left and right, temperature is higher, and trace element easily causes side reaction on tower after overstand, causes that granulation is undesired and product slag is on the high side,
Summary of the invention
The problem existing in order to solve prior art, the invention provides a kind of production method containing trace element water-soluble fertilizer.
Overcome the difficult point of high tower containing trace element water-soluble fertilizer by the present invention.The micro-difficult point of the water-soluble fertile interpolation of high tower mainly contains: 1. micro-character is unstable, easily produces self to decompose to change; 2. in production process, excess Temperature causes trace element itself to produce indissoluble material; 3. trace element overstand in system on tower, causes material damage.
The object of the invention is achieved through the following technical solutions:
A kind of production method containing trace element water-soluble fertilizer, that ammonium nitrate raw material and ammonium phosphate salt are added to aqueous fusion solution, 150 DEG C of 135 DEG C≤melting temperature (Tm) <, and the common melting material slurry fertilizer required with production composite fertilizer after melting is mixed, add water miscible containing micro-compound, after mixing, carry out emulsification and form emulsification slip, obtain water-soluble fertilizer through granulation, after cooling.
A kind of production method containing trace element water-soluble fertilizer: specifically comprise the following steps:
A, ammonium nitrate raw material and ammonium phosphate salt are entered and melt groove and melt, and add water, 150 DEG C of 135 DEG C≤melting temperature (Tm) <, and the common melting material slurry after melting is entered in mixing system;
B, fertilizer required production composite fertilizer is passed into mixing system, after the common melting material slurry short mix producing with step a, enter secondary mixing equipment, add water misciblely containing micro-compound, mix rear emulsification and form emulsification slip;
C, emulsification slip that step b is produced obtain water-soluble fertilizer through granulation, cooling, screening and face powder after oil spout.
Water misciblely be selected from more than one in water miscible calcium cpd, manganic compound, magnesium compound, molybdenum compound, zn cpds, iron cpd, copper compound or boron compound containing micro-compound.Preferred water miscible zinc compound, particularly preferably Zincomed, Zinc Sulphate Monohydrate or zinc chloride.
Described ammonium nitrate raw material is selected from ammonium nitrate or containing ammonium nitrate, water-insoluble is below 0.8% mass percent.
Described ammonium phosphate salt is selected from more than one in monoammonium phosphate, diammonium phosphate or potassium primary phosphate.
The described amount that adds water is to melt 0.1%-5% of the interior quality of material of groove.By adding a small amount of water to reduce the fusing point of ammonium nitrate, at the temperature well below ammonium nitrate fusing point, melt.
Emulsifier unit is installed after mixing device, can makes material dispersion fully, emulsification, homogeneous, fragmentation, reduce water-insoluble.
When described granulation, the spray of granulating system is blue uses the wide aperture spray between 2.5-3.0mm blue, not because using ammonium sulfate too much to stop up shower nozzle.
The inventive method can adopt high tower to carry out fused mass granulating and produce water soluble fertilizer, and high tower can be a kind of in cement structures tower or steel structure tower.
More than one in described cooling employing air rotating cylinder cooling cylinder, vibrated fluidized bed water cooler or ebullated bed water cooler.
Described screening is selected from more than one in linear vibrating screen or reciprocating oscillating screen.
The required fertilizer of described production composite fertilizer comprises more than one in nitrogenous fertilizer, phosphate fertilizer or potash fertilizer; Described nitrogenous fertilizer is selected from more than one in ammonium nitrate, ammonium nitrate mixture, ammonium sulfate, bicarbonate of ammonia, ammonium chloride or saltpetre, requires water-insoluble below 0.8% mass percent; Phosphate fertilizer is selected from more than one in monoammonium phosphate, diammonium phosphate, potassium primary phosphate, fused(calcium magnesium)phosphate, general calcium or coarse whiting, requires water-insoluble below 2.0% mass percent; Described potash fertilizer is selected from more than one in Repone K, potassium sulfate, potassium primary phosphate, saltpetre or potassium magnesium sulfate, requires water-insoluble below 1.0% mass percent.
The add-on of described ammonium phosphate salt accounts for the 5%-30% percent by volume that melts groove amount.By adding ammonium phosphate salt, reduce eutectic point, 150 DEG C of 135 DEG C≤melting temperature (Tm) <, reduce and melt rear water-insoluble generation.
The temperature that the common melting material slurry fertilizer required with production composite fertilizer after described melting mixes is at 135 DEG C-150 DEG C.
Described water-soluble zinc compound makes water-soluble fertile work in-process particle from adding to be mixed into, and the residence time on tower was controlled at below 2 minutes.
The advantage that the present invention has with respect to prior art and beneficial effect:
(1) melt and granulation by low temperature on tower, reduce the generation of trace element side reaction on tower; By adding a small amount of water to reduce the fusing point of ammonium nitrate, at the temperature well below ammonium nitrate fusing point, melt; By adding ammonium phosphate salt, reduce eutectic point, between 150 DEG C of 135 DEG C≤melting temperature (Tm) <, reduce melt after water-insoluble produce.
(2), by adding trace element at secondary mixing equipment, reduce trace element residence time on tower.
(3) can produce the water-soluble fertilizer in 1ppm-5000ppm scope containing micronutrient levels.
(4) emulsification can make material dispersion fully, emulsification, homogeneous, fragmentation, reduces water-insoluble.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Comparative example 1
The embodiment of prior art and effect data
Embodiment 1
A, by 5 tons of the monoammonium phosphates of 15 tons of pure raw material ammonium nitrates and 60% content, enter and melt groove and melt by lift, and add 100kg water, 135 DEG C of melting temperature (Tm)s, and the common melting material slurry after melting is entered in mixing system, this process is operate continuously process.
B, by raw material monoammonium phosphate required production composite fertilizer with 3 tons/hour, potassium sulfate enters mixing system continuously with 6 tons of/hour inlet amounies, after starching short mix with the common melting material of step a generation, enter secondary mixing equipment, add water-soluble containing micro-compound Zincomed, anhydrous magnesium sulfate, Zincomed and anhydrous magnesium sulfate are all with inlet amount charging in 150kg/ hour, and after mixing, emulsification forms emulsification slip.C, emulsification slip that step b is produced obtain water-soluble fertilizer through granulation, cooling, screening and face powder after oil spout, and Zincomed and the anhydrous magnesium sulfate residence time in tower upper groove body is 30 seconds.D, can produce water-insoluble below 1.0% by above step, containing zinc, the water-soluble fertilizer of magnesium more than 2000ppm.
Embodiment 2
A, melt groove and melt entering containing 3 tons of 17 tons of the bulk blended fertilizers of ammonium nitrate and monoammonium phosphates, and add 100kg water, 145 DEG C of melting temperature (Tm)s, and the common melting material slurry after melting is entered to mixing system.
B, by raw material potassium primary phosphate required production composite fertilizer with 3 tons/hour, potassium sulfate enters mixing system continuously with 5 tons of/hour inlet amounies, after starching short mix with the common melting material of step a generation, enter secondary mixing equipment, add water-soluble containing micro-compound anhydrous cupric sulfate, anhydrous magnesium sulfate, Zincomed and anhydrous magnesium sulfate, all with inlet amount charging in 150kg/ hour, mix rear emulsification and form emulsification slip.
C, emulsification slip that step b is produced obtain water-soluble fertilizer through granulation, cooling, screening and face powder after oil spout, and copper sulfate and the magnesium sulfate residence time in tower upper groove body is 30 seconds.。
D, can produce water-insoluble below 0.5% by above step, cupric, the magnesium water-soluble fertilizer more than 2000ppm.
Claims (10)
1. the preparation method containing the water-soluble fertilizer of micro-high tower, it is characterized in that, that ammonium nitrate raw material and ammonium phosphate salt are added to aqueous fusion solution, 150 DEG C of 135 DEG C≤melting temperature (Tm) <, and the common melting material slurry fertilizer required with production composite fertilizer after melting is mixed, add water misciblely containing micro-compound, after mixing, carry out emulsification and form emulsification slip, obtain water-soluble fertilizer through granulation, after cooling.
2. preparation method according to claim 1, is characterized in that, specifically comprises the following steps:
A, ammonium nitrate raw material and ammonium phosphate salt are entered and melt groove and melt, and add water, 150 DEG C of 135 DEG C≤melting temperature (Tm) <, and the common melting material slurry after melting is entered in mixing system;
B, fertilizer required production composite fertilizer is passed into mixing system, after the common melting material slurry short mix producing with step a, enter secondary mixing equipment, add water misciblely containing micro-compound, mix rear emulsification and form emulsification slip;
C, emulsification slip that step b is produced obtain water-soluble fertilizer through granulation, cooling, screening and face powder after oil spout.
3. preparation method according to claim 1 and 2, it is characterized in that, be describedly water misciblely selected from more than one in water miscible calcium cpd, manganic compound, magnesium compound, molybdenum compound, zn cpds, iron cpd, copper compound or boron compound containing micro-compound.
4. preparation method according to claim 1 and 2, is characterized in that, described ammonium nitrate raw material is selected from ammonium nitrate or containing ammonium nitrate, water-insoluble is below 0.8%.
5. preparation method according to claim 1 and 2, is characterized in that, described ammonium phosphate salt is selected from more than one in monoammonium phosphate, diammonium phosphate or potassium primary phosphate.
6. preparation method according to claim 1 and 2, is characterized in that, described in to add the amount of water be the 0.1%-5% that melts quality of material in groove.
7. preparation method according to claim 1 and 2, is characterized in that, the required fertilizer of described production composite fertilizer comprises more than one in nitrogenous fertilizer, phosphate fertilizer or potash fertilizer; Described nitrogenous fertilizer is selected from more than one in ammonium nitrate, ammonium nitrate mixture, ammonium sulfate, bicarbonate of ammonia, ammonium chloride or saltpetre, requires water-insoluble below 0.8% mass percent; Phosphate fertilizer is selected from more than one in monoammonium phosphate, diammonium phosphate, potassium primary phosphate, fused(calcium magnesium)phosphate, general calcium or coarse whiting, requires water-insoluble below 2.0% mass percent; Described potash fertilizer is selected from more than one in Repone K, potassium sulfate, potassium primary phosphate, saltpetre or potassium magnesium sulfate, requires water-insoluble below 1.0% mass percent.
8. preparation method according to claim 2, is characterized in that, the add-on of described ammonium phosphate salt accounts for the 5%-30% percent by volume that melts groove amount.
9. preparation method according to claim 1 and 2, is characterized in that, the temperature that the common melting material slurry fertilizer required with production composite fertilizer after described melting mixes is at 135 DEG C-150 DEG C.
10. preparation method according to claim 1 and 2, is characterized in that, describedly water misciblely makes water-soluble fertile work in-process particle from adding to be mixed into containing micro-compound, and the time was controlled at below 2 minutes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628444A (en) * | 2015-02-11 | 2015-05-20 | 中国-***化肥有限公司 | Method for producing nitrogen-potassium fertilizer by adopting co-soluble slurry |
| 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 |
| CN110546121A (en) * | 2017-02-27 | 2019-12-06 | 亚拉国际有限公司 | Method for preparing fertilizer granules comprising alternative boron sources |
| CN112479768A (en) * | 2019-09-12 | 2021-03-12 | 贵州芭田生态工程有限公司 | Water-soluble phosphorus potassium nitrate calcium magnesium fertilizer and preparation method thereof |
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| CN1935748A (en) * | 2006-08-31 | 2007-03-28 | 广东拉多美化肥有限公司 | Method for producing compound fertilizer by high tower granulating |
| CN102633553A (en) * | 2012-04-27 | 2012-08-15 | 深圳市芭田生态工程股份有限公司 | Method for producing high-tower ammonium phosphate compound fertilizer |
| CN102850102A (en) * | 2012-08-30 | 2013-01-02 | 贵港市芭田生态有限公司 | Preparation method for water-soluble fertilizer through high tower melt granulation |
| CN102863281A (en) * | 2012-08-27 | 2013-01-09 | 徐州市芭田生态有限公司 | Method for producing high-tower nitro-sulfenyl compound fertilizer and production system applying method |
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2014
- 2014-05-16 CN CN201410208091.8A patent/CN104030752A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1935748A (en) * | 2006-08-31 | 2007-03-28 | 广东拉多美化肥有限公司 | Method for producing compound fertilizer by high tower granulating |
| CN102633553A (en) * | 2012-04-27 | 2012-08-15 | 深圳市芭田生态工程股份有限公司 | Method for producing high-tower ammonium phosphate compound fertilizer |
| CN102863281A (en) * | 2012-08-27 | 2013-01-09 | 徐州市芭田生态有限公司 | Method for producing high-tower nitro-sulfenyl compound fertilizer and production system applying method |
| CN102850102A (en) * | 2012-08-30 | 2013-01-02 | 贵港市芭田生态有限公司 | Preparation method for water-soluble fertilizer through high tower melt granulation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628444A (en) * | 2015-02-11 | 2015-05-20 | 中国-***化肥有限公司 | Method for producing nitrogen-potassium fertilizer by adopting co-soluble slurry |
| CN110546121A (en) * | 2017-02-27 | 2019-12-06 | 亚拉国际有限公司 | Method for preparing fertilizer granules comprising alternative boron sources |
| CN110546121B (en) * | 2017-02-27 | 2022-05-24 | 亚拉国际有限公司 | Method for preparing fertilizer granules comprising alternative boron sources |
| 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 |
| CN112479768A (en) * | 2019-09-12 | 2021-03-12 | 贵州芭田生态工程有限公司 | Water-soluble phosphorus potassium nitrate calcium magnesium fertilizer and preparation method thereof |
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Application publication date: 20140910 |