CN106116850A - The urea-base compound fertilizer that a kind of air prilling produces - Google Patents
The urea-base compound fertilizer that a kind of air prilling produces Download PDFInfo
- Publication number
- CN106116850A CN106116850A CN201610473903.0A CN201610473903A CN106116850A CN 106116850 A CN106116850 A CN 106116850A CN 201610473903 A CN201610473903 A CN 201610473903A CN 106116850 A CN106116850 A CN 106116850A
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- Prior art keywords
- compound fertilizer
- urea
- base compound
- granule
- melting charge
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/20—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for preventing the fertilisers being reduced to powder; Anti-dusting additives
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The present invention provides the urea-base compound fertilizer that a kind of air prilling produces, and it comprises outer layer melting charge slurry and inner layer core granule part, and the weight ratio of melting charge slurry and core granule is 30 240:1 30.The grain of described core granule is 0.5 2.0mm, and anti-crushing power is 5 30kgf.ω (N) >=50% in described melting charge slurry, ω (H2O)≤0.8%, melt temperature is less than 125 DEG C.The particle diameter of the urea-base compound fertilizer of the present invention is 2.0 4.0mm, and anti-crushing power is 5 30kgf, and granule is uniform, water content is less than 0.7%, has preferable slow release effect.
Description
Technical field
The invention belongs to compound fertilizer and manufacture field, be specifically related to the urea-base compound fertilizer that a kind of air prilling produces.
Background technology
Urine slurry-spraying pelletizing, is that urea production process is prepared semi-finished product, i.e. molten urea solution or added by solid particle carbamide
Heat fusing becomes urine, introduces compound fertilizer processing granulating system slurry-spraying pelletizing.Molten urea solution, in the case of temperature, pressure are constant, continues
Extend the melting time, its Biuret Content still can be caused to raise；Carbamide when starting to melt for 80 DEG C, the nitrogen volatilization loss having,
And raise with its melt temperature and increase.The most directly quote urine or carbamide makes compound fertilizer and can cause the ammonia dirt to environment
Dye, and the injury that biuret is to crops seedling.It addition, the most easily can with other manure salt when molten urea solution or carbamide granulation
There is chemical reaction, and product seriously lump, outward appearance light not round, granule nutrient is uneven, intensity is low, slow release effect is poor,
Also it is difficult to produce the product that nitrogen content is low.
CN1435399 discloses a kind of nitrogenous, manufacture method of phosphorus, potassium urine base composite particles fertilizer, and the method is by carbamide
Or after molten urea solution is mixed in proportion the prepared melting charge slurry of heating with potassium salt, water, by granulation zone in its atomized spray to granulation disc
Phosphorus, potassium, on phosphorus ammonium powder, be repeatedly bonded to conforming particle, due to the slurry-spraying pelletizing that constantly feeds in dish, conforming particle just with
Charge level rising spilling dish automatically outside.The most cooled, classification, metering packing, just prepare finished product.But the production work of the document
Skill introduces water so that the water content of fertilizer is higher；Simultaneously using phosphorus, potassium, phosphorus ammonium powder as core, although the nutrition of fertilizer
Component ratio is high, but its functional component is not enough, so that fertilizer easily occurs the situation of hardening in application process, affects crop raw
Long.
Summary of the invention
For solving the problems referred to above, the invention provides a kind of low cost, power consumption less, water content low, and slow release effect is good
Urea-base compound fertilizer.
The present invention provides the urea-base compound fertilizer that a kind of air prilling produces, and it comprises outer layer melting charge slurry part and internal layer core
Heart granule part, the weight ratio of melting charge slurry and core granule is 30-240:1-30.
Preferably, the grain of described core granule is 0.5-2.0mm, and anti-crushing power is 5-30kgf.
Preferably, ω (N) >=50%, ω (H in described melting charge slurry2O)≤0.8%.
Preferably, the melt temperature of described melting charge slurry is less than 125 DEG C.
The particle diameter of the urea-base compound fertilizer of the present invention is 2.0-4.0mm, and anti-crushing power is 5-30kgf, and water content is less than
0.7%, slow-release period is more than 100 days.
Present invention also offers a kind of method that air prilling produces urea-base compound fertilizer, it is characterised in that this production method
Comprise the steps:
1) carbamide is made melting charge slurry；
2) open high pressure positive blower to be caused in ejector by high-pressure blast；
3) melting charge slurry and little particulate material are introduced mixing chamber formation by the negative pressure that ejector is produced by slurry pipeline transport process
Feed liquid；
4) this gas-liquid mixture is sprayed by ejector inner high voltage gas by feed liquid by anemostat formation gas-liquid mixture simultaneously
It is mapped in container, course of injection is formed granule, after shaped particles moves to critical distance, naturally falls, collection bucket collect.
5) granule that collection bucket is collected is transported to screening machine, and finished particle enters lower one peplos operation, the little granule of screening
Returning charge is in conveying equipment returns granulation container, as little particulate material again pelletize.
The flow of described ejector is 1～10 ton/time, flow velocity is 0.5～30 meter per seconds.
The urea-base compound fertilizer that the air prilling of the present invention produces, comprise core granule and carbamide, MAP, potassium sulfate or
One or more in potassium chloride, bentonite, zeolite powder, endophyte of plant or anticaking agent；Wherein, core granule, carbamide, phosphorus
The mass ratio of acid one ammonium, potassium sulfate or potassium chloride, bentonite, zeolite powder, endophyte of plant and anticaking agent is 1-30:30-90:
0-36:0-50:0-30:0-30:0.1-0.5:0.1-0.2。
Beneficial effects of the present invention:
1, the equal energy of index such as the uniformity of the urea-base compound fertilizer of the present invention not only fertiliser granulates, smoothness, hardness, water content
Enough meet the requirement of complex fertilizer product, and pelletize low cost, improve the cost performance of fertilizer.
2, the air prilling compound fertilizer technology that the present invention uses reduces melt temperature, prevents melt temperature more than 130 DEG C
Time produce the biuret that the root growth of crop is had obvious toxic action.
3, the core granule in the urea-base compound fertilizer of the present invention has slow release effect.
4, core granule can make compound fertilizer granules quickly cool down because its specific surface area is big, reduces energy consumption 20%.
5, the equipment that the air prilling compound fertilizer technology of the present invention is used is simple, and cost is low, and floor space is little, and ratio is commonly
Technique reduces production cost 20%.
Detailed description of the invention
Below the detailed description of the invention of the present invention is described further:
Embodiment 1
Urea-base compound fertilizer is composed of the following components in parts by weight: core granule 25 parts, 40 parts of carbamide, MAP 10 parts,
Potassium sulfate 10 parts, bentonite 10 parts, zeolite powder 10 parts, endophyte of plant 0.3 part, anticaking agent 0.1 part.
The method that air prilling produces urea-base compound fertilizer is as follows:
1) carbamide, MAP, potassium sulfate or potassium chloride, bentonite, zeolite powder, endophyte of plant, anticaking agent are pressed
More solito is prepared as melting charge slurry.
2) open high pressure positive blower to be caused in ejector by high-pressure blast.
3) core granule is put in ejector by dog-house.
4) melting charge slurry and core granule are drawn by the negative pressure that ejector is produced by slurry pipeline transport process with above-mentioned weight portion
Enter mixing chamber and form feed liquid.
5) this gas-liquid mixture is sprayed by ejector inner high voltage gas by feed liquid by anemostat formation gas-liquid mixture simultaneously
Being mapped in container, in course of injection, gas-liquid mixture granule forms solid particle, after the granule of shaping moves to critical distance, from
So fall, collection bucket collect finished particle.
6) granule that collection bucket is collected being transported to screening machine, finished particle enters peplos operation, and the core granule of screening returns
Expect in conveying equipment returns core granule Granulation Equipments, as core granule again pelletize.
7) discharge after the dust produced in granulation process is processed by tail gas dust cleaning apparatus.
Embodiment 2
Urea-base compound fertilizer is composed of the following components in parts by weight: core granule 25 parts, 30 parts of carbamide, endophyte of plant 0.1
Part, anticaking agent 0.1 part.
The method that air prilling produces urea-base compound fertilizer is as follows:
1) carbamide, endophyte of plant, anticaking agent are conventionally prepared as melting charge slurry.
2) open high pressure positive blower to be caused in ejector by high-pressure blast.
3) core granule is put in ejector by dog-house.
4) melting charge slurry and core granule are drawn by the negative pressure that ejector is produced by slurry pipeline transport process with above-mentioned weight portion
Enter mixing chamber and form feed liquid.
5) this gas-liquid mixture is sprayed by ejector inner high voltage gas by feed liquid by anemostat formation gas-liquid mixture simultaneously
Being mapped in container, in course of injection, gas-liquid mixture granule forms solid particle, after the granule of shaping moves to critical distance, from
So fall, collection bucket collect finished particle.
6) granule that collection bucket is collected being transported to screening machine, finished particle enters peplos operation, and the core granule of screening returns
Expect in conveying equipment returns core granule Granulation Equipments, as core granule again pelletize.
7) discharge after the dust produced in granulation process is processed by tail gas dust cleaning apparatus.
Embodiment 3
Urea-base compound fertilizer is composed of the following components in parts by weight: common fertilizer granule 25 parts, 40 parts of carbamide, MAP 10
Part, potassium sulfate 10 parts, bentonite 10 parts, zeolite powder 10 parts, endophyte of plant 0.3 part, anticaking agent 0.1 part.
The method that air prilling produces urea-base compound fertilizer is as follows:
1) carbamide, MAP, potassium sulfate or potassium chloride, bentonite, zeolite powder, endophyte of plant, anticaking agent are pressed
More solito is prepared as melting charge slurry.
2) open high pressure positive blower to be caused in ejector by high-pressure blast.
3) common fertilizer granule is put in ejector by dog-house.
4) negative pressure that ejector is produced by slurry pipeline transport process by melting charge slurry and common fertilizer granule with above-mentioned weight
Part introducing mixing chamber forms feed liquid.
5) this gas-liquid mixture is sprayed by ejector inner high voltage gas by feed liquid by anemostat formation gas-liquid mixture simultaneously
Being mapped in container, in course of injection, gas-liquid mixture granule forms solid particle, after the granule of shaping moves to critical distance, from
So fall, collection bucket collect finished particle.
6) granule that collection bucket is collected being transported to screening machine, finished particle enters peplos operation, and the common fertilizer of screening is little
Grain returning charge is in conveying equipment returns common fertilizer granule Granulation Equipments, as common fertilizer granule again pelletize.
7) discharge after the dust produced in granulation process is processed by tail gas dust cleaning apparatus.
Embodiment 4
Urea-base compound fertilizer is composed of the following components in parts by weight: core granule 25 parts, 5 parts of carbamide, MAP 10 parts, sulfur
Acid 10 parts of potassium, bentonite 10 parts, zeolite powder 10 parts, endophyte of plant 0.3 part, anticaking agent 0.1 part.
The method that air prilling produces urea-base compound fertilizer is as follows:
1) carbamide, MAP, potassium sulfate or potassium chloride, bentonite, zeolite powder, endophyte of plant, anticaking agent are pressed
More solito is prepared as melting charge slurry.
2) open high pressure positive blower to be caused in ejector by high-pressure blast.
3) core granule is put in ejector by dog-house.
4) melting charge slurry and core granule are drawn by the negative pressure that ejector is produced by slurry pipeline transport process with above-mentioned weight portion
Enter mixing chamber and form feed liquid.
5) this gas-liquid mixture is sprayed by ejector inner high voltage gas by feed liquid by anemostat formation gas-liquid mixture simultaneously
Being mapped in container, in course of injection, gas-liquid mixture granule forms solid particle, after the granule of shaping moves to critical distance, from
So fall, collection bucket collect finished particle.
6) granule that collection bucket is collected being transported to screening machine, finished particle enters peplos operation, and the core granule of screening returns
Expect in conveying equipment returns core granule Granulation Equipments, as core granule again pelletize.
7) discharge after the dust produced in granulation process is processed by tail gas dust cleaning apparatus.
The fertilizer prepared by above-described embodiment 1, embodiment 2, embodiment 3 and embodiment 4, its performance indications such as table
Shown in 1.
Table 1 embodiment 1, embodiment 2, embodiment 3 and embodiment 4 prepare the performance indications table of urea-base compound fertilizer product
It can be seen that the compound fertilizer granules prepared by the method for the present invention, it is achieved that the uniformity of fertilizer, hardness and contain
Water yield index has all reached the standard of compound fertilizer granules.
The slow release effect detection of urea-base compound fertilizer of the present invention:
(1) the release phase determination experiment of nitrogen: it is real that Example 1,2,3,4 gained urea-base compound fertilizer carries out release phase mensuration
Test, the results are shown in Table 2.Can be drawn by table 2, the core granule adding ratio of the present invention can make the slow-release period of nitrogen in urea-base compound fertilizer add
Long.Experimental data shows, compares the compound fertilizer adding ratio core granule of the present invention, with the addition of the compound of common fertilizer granule
Fertilizer, the slow-release period of its nitrogen shortens 59 days.Core granule is the important component part of urea-base compound fertilizer of the present invention, can make in fertilizer
The slow-release period of nutritional labeling is greatly prolonged.
In table 2 gained compound fertilizer, the release phase of nitrogen measures (unit: d)
The announcement of book and teaching according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula changes and revises.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, to invention
A little modifications and changes should also be as falling in the scope of the claims of the present invention.Although additionally, this specification employing
Some specific terms, but these terms are merely for convenience of description, and the present invention does not constitute any restriction.
Claims (8)
1. the urea-base compound fertilizer that an air prilling produces, it is characterised in that described urea-base compound fertilizer comprises outer layer melting charge
Slurry part and inner layer core granule part, wherein the weight ratio of melting charge slurry and core granule is 30-240:1-30；
The particle diameter of described core granule is 0.5-2.0mm, and anti-crushing power is 5-30kgf.
Urea-base compound fertilizer the most according to claim 1, it is characterised in that ω (N) >=50%, ω in described melting charge slurry
(H2O)≤0.8%.
Urea-base compound fertilizer the most according to claim 1, it is characterised in that the melt temperature of described melting charge slurry is less than
125℃。
Urea-base compound fertilizer the most according to claim 1, it is characterised in that the particle diameter of described urea-base compound fertilizer is 2.0-
4.0mm, anti-crushing power is 5-30kgf.
5. according to the air prilling production method of urea-base compound fertilizer described in any one of claim 1-4, it is characterised in that this production
Method comprises the steps:
1) melting charge slurry is got out；
2) open high pressure positive blower to be caused in ejector by high-pressure blast；
3) melting charge slurry and core granule are introduced mixing chamber by the negative pressure that slurry pipeline transport process produces and form feed liquid by ejector；
4) this gas-liquid mixture is ejected into by ejector inner high voltage gas by feed liquid by anemostat formation gas-liquid mixture simultaneously
In container, course of injection is formed granule, after shaped particles moves to critical distance, naturally falls, collection bucket collect；
5) granule that collection bucket is collected is transported to screening machine, and finished particle enters lower one peplos operation, the little granule returning charge of screening
In conveying equipment returns granulation container, as little particulate material again pelletize；
6) discharge after the dust produced in granulation process is processed by tail gas dust cleaning apparatus.
The air prilling production method of urea-base compound fertilizer the most according to claim 5, it is characterised in that the stream of described ejector
Amount is 1～10 ton/time, flow velocity is 0.5～30 meter per seconds.
7. according to the urea-base compound fertilizer described in any one of claim 1-4, it is characterised in that this compound fertilizer's water content is less than
0.7%, slow-release period is more than 100 days.
8. the urea-base compound fertilizer that an air prilling produces, it is characterised in that described urea-base compound fertilizer containing core granule and carbamide,
One or more in MAP, potassium sulfate or potassium chloride, bentonite, zeolite powder, endophyte of plant or anticaking agent；Its
In, core granule, carbamide, MAP, potassium sulfate or potassium chloride, bentonite, zeolite powder, endophyte of plant and anticaking agent
Mass ratio is 1-30:30-90:0-36:0-50:0-30:0-30:0.1-0.5:0.1-0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473903.0A CN106116850A (en) | 2016-06-25 | 2016-06-25 | The urea-base compound fertilizer that a kind of air prilling produces |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473903.0A CN106116850A (en) | 2016-06-25 | 2016-06-25 | The urea-base compound fertilizer that a kind of air prilling produces |
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| CN201610473903.0A Pending CN106116850A (en) | 2016-06-25 | 2016-06-25 | The urea-base compound fertilizer that a kind of air prilling produces |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092699A (en) * | 2018-01-30 | 2019-08-06 | 徐州市禾协肥业有限公司 | A kind of high intensity fertiliser granulates |
| CN111574268A (en) * | 2019-02-15 | 2020-08-25 | 王国芳 | Simple and easy new method for producing compound (mixed) fertilizer directly by urea device |
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| CN1388101A (en) * | 2002-06-28 | 2003-01-01 | 孔亦周 | Melt spraying pelletizing process and system |
| CN1752056A (en) * | 2004-12-31 | 2006-03-29 | 深圳市芭田生态工程股份有限公司 | A kind of tower type granulation produces the method of granular compound fertilizer |
| CN101041600A (en) * | 2007-03-16 | 2007-09-26 | 阴高鹏 | Humic acid composite material and preparation method thereof |
| CN101921142A (en) * | 2009-06-10 | 2010-12-22 | 张博哲 | High tower urea-based compound fertilizer and preparation method thereof |
| CN101993277A (en) * | 2009-08-18 | 2011-03-30 | 河南财鑫实业化工有限责任公司 | Production process of high tower melt-granulated compound fertilizer |
| CN103739387A (en) * | 2013-12-30 | 2014-04-23 | 北京仁创三会农业科技有限公司 | Envelope controlled-release fertilizer taking silica sands as core and preparation method thereof |
-
2016
- 2016-06-25 CN CN201610473903.0A patent/CN106116850A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1388101A (en) * | 2002-06-28 | 2003-01-01 | 孔亦周 | Melt spraying pelletizing process and system |
| CN1752056A (en) * | 2004-12-31 | 2006-03-29 | 深圳市芭田生态工程股份有限公司 | A kind of tower type granulation produces the method of granular compound fertilizer |
| CN101041600A (en) * | 2007-03-16 | 2007-09-26 | 阴高鹏 | Humic acid composite material and preparation method thereof |
| CN101921142A (en) * | 2009-06-10 | 2010-12-22 | 张博哲 | High tower urea-based compound fertilizer and preparation method thereof |
| CN101993277A (en) * | 2009-08-18 | 2011-03-30 | 河南财鑫实业化工有限责任公司 | Production process of high tower melt-granulated compound fertilizer |
| CN103739387A (en) * | 2013-12-30 | 2014-04-23 | 北京仁创三会农业科技有限公司 | Envelope controlled-release fertilizer taking silica sands as core and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110092699A (en) * | 2018-01-30 | 2019-08-06 | 徐州市禾协肥业有限公司 | A kind of high intensity fertiliser granulates |
| CN111574268A (en) * | 2019-02-15 | 2020-08-25 | 王国芳 | Simple and easy new method for producing compound (mixed) fertilizer directly by urea device |
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Application publication date: 20161116 |