CN1752050A - Method of increasing nitrate nitrogen content in urobase particle composite fertilizer - Google Patents
Method of increasing nitrate nitrogen content in urobase particle composite fertilizer Download PDFInfo
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- CN1752050A CN1752050A CN 200410077769 CN200410077769A CN1752050A CN 1752050 A CN1752050 A CN 1752050A CN 200410077769 CN200410077769 CN 200410077769 CN 200410077769 A CN200410077769 A CN 200410077769A CN 1752050 A CN1752050 A CN 1752050A
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Abstract
A process for increasing the content of nitro-state nitrogen in granular composite urea-base fertilizer features that nitrate is added to the slurry of composite fertilizer in a fusing mixer, As a result, the nitrogen component in the N,P and/or K fertilizer contains both urea-state nitrogen and nitro-state nitrogen.
Description
Technical field
The present invention relates to a kind of method that increases nitrate nitrogen content in the urine base granular composite fertilizer that adopts tower granulation production, specifically, relating to a kind of additive nitrate that utilizes increases the method that nitrate nitrogen content in the basic granular composite fertilizer is urinated in tower granulation production.
Background technology
It is to add monoammonium phosphate and/or potash fertilizer composition (for example Repone K and/or vitriolate of tartar) and additive etc. are made slip in fusing urea solution for example that tower granulation is produced the urea-based compound fertilizer cardinal principle, slip is by the form ejection of cat head prilling spry with thin jet fluid column, the fluid column of ejection fragments into drop when contacting with air, drop descends in tower and carries out heat exchange with air, therefore forms particle and falls at the bottom of the tower.Tower granulation is produced the major advantage of particle urea-based compound fertilizer:
(1), the melting charge slurry moisture content is low, the drying-free process has been saved energy consumption;
(2), smooth, mellow and full, the prevented from caking of particle surface, have the higher market competitiveness;
(3), good operational environment, three-waste free discharge belongs to process for cleanly preparing;
(4), can directly utilize the production system urea melt, simplified the technological process of production.
Also there is following defective in it:
Only contain urea nitrigen and a spot of ammonium nitrogen in the product, so product nutrient form is single, fertilizer efficiency is subjected to certain influence.
Urinate in the basic granular composite fertilizer technology in existing tower granulation production, additive mainly adopts clay, Paris white, ground dolomite or zeolite powder etc.Owing to do not have the nutrient of crop absorption in the existing additive and, therefore, still just need a kind ofly can overcome the method that the tower granulation method is produced the above-mentioned defective of granular composite fertilizer because product content has been diluted in the adding of additive.
The present inventor adopts the nitrate powder can solve the above-mentioned defective of producing the particle urea-based compound fertilizer at tower granulation as additive, so finished the present invention by the discovery of concentrating on studies.
Summary of the invention
The present invention is intended to overcome the defective of the basic granular composite fertilizer of existing urine, and a kind of additive that basic granular composite fertilizer nitric nitrogen is urinated in tower granulation production that is used for increasing is provided.
The object of the invention provides a kind of method that increases nitrate nitrogen content in the urine base granular composite fertilizer that tower granulation produces; described method is that nitrate is joined in the compound manure slip of melt mixer; behind the thorough mixing, the mixed slurry of gained enters the granulation of cat head tablets press.
A further object of the present invention provides a kind of nitrate is urinated basic granular composite fertilizer in tower granulation production as additive application.
Another object of the present invention provides a kind of high urine base granular composite fertilizer of nitrate nitrogen content that adopts tower granulation to produce.
Specifically; the invention provides a kind of method of producing granular composite fertilizer using tower pelletizing; described method is that nitrate is joined in the compound manure slip of melt mixer; the weight ratio of nitrate and compound manure slip is for example about 200-1: 1; be preferably about 50-4: 1; behind the thorough mixing, the mixed slurry of gained enters the granulation of cat head tablets press.
The inventive method utilizes additive nitrate to increase nitrate nitrogen content in the urine base granular composite fertilizer that tower granulation produces, and makes to contain urea nitrigen and nitric nitrogen simultaneously in the nitrogen of nitrogen phosphorus that the tower granulation method is produced and/or K compound fertilizer.
The present invention also provides a kind of nitrate to produce the application of the urine base granular composite fertilizer of high-nitrate state nitrogen content at tower granulation as additive.
The present invention provides also that a kind of to adopt the nitrate nitrogen content of tower granulation production be 0.5-10%, is preferably the urine base granular composite fertilizer of 1-5%.
The urea-based compound fertilizer product that the present invention produces can be a nitrogen phosphorus potassium three elements complex fertilizer, also can be nitrogen phosphorus or binary compound fertilizer containing nitrogen and potassium material.Adopt the inventive method to be for example (N+P by production available nutrient content
2O
5+ K
2O) 〉=25% compound manure.
The nitrate that adopts among the present invention is selected from one or more in for example ammonium nitrate, nitrocalcite, magnesium nitrate, ammonium nitrate phosphorus, ammonium nitrate potassium, nitramino zinc and the nitre nitrogenous fertilizer.
In the present invention, described urea-based compound fertilizer slip is meant and can be used for the urea-based compound fertilizer raw material that tower granulation is produced, the melting charge slurry that obtains after the particularly conventional urea-based compound fertilizer raw materials melt.
Conventional urea-based compound fertilizer raw material is the urea-based compound fertilizer raw material produced of tower granulation for example.Described raw material can include only nitrogenous fertilizer, phosphate fertilizer and/or potash fertilizer fertilizer component, also can denitrogenate, outside phosphorus and/or the potash fertilizer fertilizer component, and in also comprising, trace element fertilizer, even other conventional additives (filler) for example clay, lime carbonate or ground dolomite.
The nitrogen fertilizer composition is selected from a kind of in for example urea, urea and ammonium chloride and/or the ammonium sulfate.
The phosphate fertilizer fertilizer component is a monoammonium phosphate for example.
The potash fertilizer fertilizer component is Repone K and/or vitriolate of tartar.
In, the trace element fertilizer composition conventional in, trace compound, for example calcium sulfate, ferric sulfate, zinc sulfate, sal epsom, copper sulfate, manganous sulfate, boric acid, borax and ammonium molybdate etc.
Product of the present invention can also contain an amount of dyestuff, for example for example Xylene Red, acid orchid etc. of matching stain.Dyestuff can be made the color grains compound manure after adding.
The compound manure slip that can adopt among the present invention can be referring to for example CN1475470A, CN1403423A.
The present invention has excellent effect, the present invention has overcome existing granulation and has produced the more single defective of nitrogen nutrition element in the basic granular composite fertilizer product of urine, compares product nutrient density height of the present invention with simple urea-based compound fertilizer, nutrition is more comprehensive, and fertilizer efficiency is better.
Embodiment
The following example is to further explanation of the present invention and explanation, and the present invention is not constituted any limitation.
Embodiment 1
Getting urea-base compound fertilizer slip (the specification 15.51-5.01-15.20 of slip) 5.0kg, ammonium nitrate 1.0kg and returning charge joins in the mixing tank; thorough mixing is made mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation, and the granulation material obtains qualified product by sieving after anti-caking is handled.Turn back in the mixing tank as returning charge in the lump after fine powder material after the screening and the macrobead fragmentation, this product is the granular nitrogen phospho potash complex fertilizer, it contain total N18.52% wherein nitric nitrogen be 2.81%, P
2O
54.15%, K
2O 12.63%, moisture 0.52%, granule strength 20.5N.
Embodiment 2
Getting urea-base compound fertilizer slip (slip specification 16.50-6.55-10.14) 3.0kg, nitrocalcite 0.8kg and returning charge joins in the mixing tank; thorough mixing is made mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation, and the granulation material obtains qualified product by sieving after anti-caking is handled.Turn back in the mixing tank as returning charge in the lump after fine powder material after the screening and the macrobead fragmentation, this product is the granular nitrogen phospho potash complex fertilizer, it contain total N 16.15% wherein nitric nitrogen be 3.12%, P
2O
55.11%, K
2O 8.20%, moisture 0.61%, granule strength 18.0N.
Embodiment 3
Getting urea-base compound fertilizer slip (slip specification 15.91-14.80-15.16) 6.0kg, zinc nitrate (containing N33%) 0.2kg and returning charge joins in the mixing tank; thorough mixing is made mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation, and the granulation material obtains qualified product by sieving after anti-caking is handled.Turn back in the mixing tank as returning charge in the lump after fine powder material after the screening and the macrobead fragmentation, this product is the granular nitrogen phospho potash complex fertilizer, it contain total N16.44% wherein nitric nitrogen be 0.52%, P
2O
514.30%, K
2O14.63%, moisture 0.42%, granule strength 16.5N.
Embodiment 4
Getting urea-base compound fertilizer slip (slip specification 19.12-10.88-19.10) 5.0kg, nitric acid phosphorus (containing N30%) 0.35kg and returning charge joins in the mixing tank; thorough mixing is made mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation, and the granulation material obtains qualified product by sieving after anti-caking is handled.Turn back in the mixing tank as returning charge in the lump after fine powder material after the screening and the macrobead fragmentation, this product is the granular nitrogen phospho potash complex fertilizer, it contain total N 17.81% wherein nitric nitrogen be 1.0%, P
2O
510.40%, K
2O17.83%, moisture 0.36%, granule strength 22.0N.
Embodiment 5
Getting urea-base compound fertilizer slip (slip specification 15.06-15.19-15.80) 3.0kg, nitrocalcite (N15%) 1.5kg and returning charge joins in the mixing tank; thorough mixing is made mixed slurry; mixed slurry sprays by the cat head tablets press and enters the prilling tower granulation, and the granulation material obtains qualified product by sieving after anti-caking is handled.Turn back in the mixing tank as returning charge in the lump after fine powder material after the screening and the macrobead fragmentation, this product is the granular nitrogen phospho potash complex fertilizer, it contain total N14.96% wherein nitric nitrogen be 5%, P
2O
510.10%, K
2O10.50%, moisture 0.52%, granule strength 20.0N.
Claims (8)
1, a kind of method that increases nitre nitrogen attitude content in the urine base granular composite fertilizer that tower granulation produces is characterized in that nitrate is joined in the urea-based compound fertilizer slip, and behind the thorough mixing, the mixed slurry of gained enters the granulation of cat head tablets press.
2, according to the process of claim 1 wherein that the weight ratio of described urea-based compound fertilizer slip and nitrate is 200-1: 1.
3, according to the method for claim 2, wherein, the weight ratio of described compound manure slip and nitrate is 50-4: 1.
4, according to arbitrary method of claim 1-3, described nitrate is selected from one or more in ammonium nitrate, nitrocalcite, magnesium nitrate, ammonium nitrate phosphorus, ammonium nitrate potassium, nitramino zinc and the nitre nitrogenous fertilizer.
5, the basic granular composite fertilizer of a kind of urine is characterized in that nitrate nitrogen content is 0.5-10% by weight.
6,, it is characterized in that nitrate nitrogen content is 1-5% by weight according to the urine base granular composite fertilizer of claim 5.
7, a kind of additive is urinated application in the basic granular composite fertilizer in tower granulation production, it is characterized in that described additive is a nitrate.
8, according to the application of claim 7, wherein, described nitrate is selected from one or more in ammonium nitrate, nitrocalcite, magnesium nitrate, ammonium nitrate phosphorus, ammonium nitrate potassium, nitramino zinc and the nitre nitrogenous fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410077769 CN1752050A (en) | 2004-12-31 | 2004-12-31 | Method of increasing nitrate nitrogen content in urobase particle composite fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410077769 CN1752050A (en) | 2004-12-31 | 2004-12-31 | Method of increasing nitrate nitrogen content in urobase particle composite fertilizer |
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| Publication Number | Publication Date |
|---|---|
| CN1752050A true CN1752050A (en) | 2006-03-29 |
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|---|---|---|---|
| CN 200410077769 Pending CN1752050A (en) | 2004-12-31 | 2004-12-31 | Method of increasing nitrate nitrogen content in urobase particle composite fertilizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030757A (en) * | 2014-06-19 | 2014-09-10 | 山东聊城鲁西化工第五化肥有限公司 | Method for producing compound fertilizer containing nitrate nitrogen potassium sulphate |
-
2004
- 2004-12-31 CN CN 200410077769 patent/CN1752050A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104030757A (en) * | 2014-06-19 | 2014-09-10 | 山东聊城鲁西化工第五化肥有限公司 | Method for producing compound fertilizer containing nitrate nitrogen potassium sulphate |
| CN104030757B (en) * | 2014-06-19 | 2016-02-10 | 山东聊城鲁西化工第五化肥有限公司 | A kind of production method containing nitric nitrogen potassium sulfate compound fertilizer |
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