CN106396791A - Preparation process of puffed slow-release fertilizer - Google Patents
Preparation process of puffed slow-release fertilizer Download PDFInfo
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- CN106396791A CN106396791A CN201610740540.2A CN201610740540A CN106396791A CN 106396791 A CN106396791 A CN 106396791A CN 201610740540 A CN201610740540 A CN 201610740540A CN 106396791 A CN106396791 A CN 106396791A
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- slow releasing
- grid structure
- releasing fertilizer
- dimensional grid
- fertilizer
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a preparation process of a puffed slow-release fertilizer. Agricultural production waste deteriorated stale corn is adopted as the raw material and is mixed with urea in proportion, an extrusion puffing technology is employed to prepare a novel slow-release fertilizer, and exploration is carried out on the slow release properties, structure and slow release mechanism, etc. The slow-release fertilizer provided by the invention has the advantages of simple preparation process, low cost, good biodegradability, and no secondary pollution, lays the foundation for production of slow-release fertilizers applicable to field crops, and has broad market prospects.
Description
Technical field
A kind of the invention belongs to agriculture field, it is more particularly related to preparation technology of swelling slow releasing fertilizer.
Background technology
Swelling slow releasing fertilizer is one of most important means of production in agricultural production, with economic continuous development, delays/control
The advantages of release fertilizer applies convenient, fertilizer efficiency period is long with it, extremely experts and scholars pay attention to both at home and abroad.Most of slow release fertilizer lifes at present
Produce as coating process, there is complex process, expensive problem.
Content of the invention
Problem to be solved by this invention is to provide a kind of preparation technology of swelling slow releasing fertilizer.
To achieve these goals, the technical scheme that the present invention takes is：
A kind of preparation technology of swelling slow releasing fertilizer, comprises the steps：
（1）Comminution pretreatment
First rotten corn Universalpulverizer is crushed 10-20min, the screen cloth then passing through 2-4mm is screened；
（2）Weigh
Then weigh the rotten corn after urea and comminution pretreatment in proportion, the ratio of described urea and rotten corn is 1:1-
2:1；
（3）Mixing
Material after weighing is put in mixer respectively and is stirred mixing, form compound, the time of described mixing is
15-25min, the temperature of described mixing is 30-50 DEG C；
（4）Expanded
Then compound is divided to put into and in single screw squeezing expansion machine, carry out extrusion, form three-dimensional grid structure
Thing, the pressure of described single screw squeezing expansion machine is 5-7MPa；
（5）Broken
Three-dimensional grid structure thing after will be expanded is crushed by disintegrating machine, forms particle, the size of described particle is 5-
7mm；
（6）Granulation
Particle, oil foot and melting chemical fertilizer are granulated in Squeezinggranulator, is formed swelling slow releasing fertilizer, described comminutor
Rotating speed is 10-20r/min, and the time of described granulation is 20-40min；
（7）It is dried
Then the swelling slow releasing fertilizer after granulation is dried in an oven, the time of described drying is 6-8h, the temperature of described drying
Spend for 60-70 DEG C；
（8）Cooling
Take out cooling after drying, and sieved by screening machine, then packed.
Preferably, described step（1）The water content of mesometamorphism corn is 13-15%.
Preferably, described step（2）The particle diameter of middle urea is 0.3-0.5mm.
Preferably, described step（4）The temperature of middle single screw squeezing expansion machine is 110-130 DEG C, described single screw rod extruding
The die diameter of bulking machine is 2-4mm.
Preferably, described step（4）In expanded after three-dimensional grid structure thing carried out with the mensure of moisture content, described mensure side
Method is by three-dimensional grid structure thing pulverizing and jevigating, crosses 40 mesh sieves, so that three-dimensional grid structure thing example weight is controlled in 2-4
g.
Preferably, described step（6）Butachlor oil is added while middle granulation.
Beneficial effect：The invention provides a kind of preparation technology of swelling slow releasing fertilizer, with agricultural production discarded object corn
Rotten grain in storage for years be raw material, it is mixed in proportion with urea, using extruding and puffing technology technique preparation new slow release fertilizer, and
Its sustained release performance, structure, Releasing Mechanism etc. are inquired into.This slow release fertilizer preparation process is simple, cheap, biological fall
Solution performance is good, does not cause secondary pollution, lays a good foundation for producing the slow release fertilizer being available for field crop administration, market prospects are wide
Wealthy.
Specific embodiment
Embodiment 1：
A kind of preparation technology of swelling slow releasing fertilizer, comprises the steps：
（1）Comminution pretreatment
First rotten corn Universalpulverizer is crushed 10min, the screen cloth then passing through 2mm is screened, described rotten corn
Water content be 13%；
（2）Weigh
Then weigh the rotten corn after urea and comminution pretreatment in proportion, the ratio of described urea and rotten corn is 1:1,
The particle diameter of described urea is 0.3mm；
（3）Mixing
Material after weighing is put in mixer respectively and is stirred mixing, form compound, the time of described mixing is
15min, the temperature of described mixing is 30 DEG C；
（4）Expanded
Then compound is divided to put into and in single screw squeezing expansion machine, carry out extrusion, form three-dimensional grid structure
Thing, the pressure of described single screw squeezing expansion machine is 5MPa, and the temperature of described single screw squeezing expansion machine is 110 DEG C, described list
The die diameter of screw extrusion machine is 2mm, described expanded after three-dimensional grid structure thing carried out with the mensure of moisture content, described
Assay method is by three-dimensional grid structure thing pulverizing and jevigating, crosses 40 mesh sieves, then makes three-dimensional grid structure thing example weight control
System is in 2 g；
（5）Broken
Three-dimensional grid structure thing after will be expanded is crushed by disintegrating machine, forms particle, the size of described particle is 5mm；
（6）Granulation
Particle, oil foot and melting chemical fertilizer are granulated in Squeezinggranulator, is formed swelling slow releasing fertilizer, described comminutor
Rotating speed is 10r/min, and the time of described granulation is 20min, adds butachlor oil while described granulation；
（7）It is dried
Then the swelling slow releasing fertilizer after granulation is dried in an oven, the time of described drying is 6h, the temperature of described drying
For 60 DEG C；
（8）Cooling
Take out cooling after drying, and sieved by screening machine, then packed.
Embodiment 2：
A kind of preparation technology of swelling slow releasing fertilizer, comprises the steps：
（1）Comminution pretreatment
First rotten corn Universalpulverizer is crushed 15min, the screen cloth then passing through 3mm is screened, described rotten corn
Water content be 14%；
（2）Weigh
Then weigh the rotten corn after urea and comminution pretreatment in proportion, the ratio of described urea and rotten corn is 1.5:
1, the particle diameter of described urea is 0.4mm；
（3）Mixing
Material after weighing is put in mixer respectively and is stirred mixing, form compound, the time of described mixing is
20min, the temperature of described mixing is 40 DEG C；
（4）Expanded
Then compound is divided to put into and in single screw squeezing expansion machine, carry out extrusion, form three-dimensional grid structure
Thing, the pressure of described single screw squeezing expansion machine is 6MPa, and the temperature of described single screw squeezing expansion machine is 120 DEG C, described list
The die diameter of screw extrusion machine is 3mm, described expanded after three-dimensional grid structure thing carried out with the mensure of moisture content, described
Assay method is by three-dimensional grid structure thing pulverizing and jevigating, crosses 40 mesh sieves, then makes three-dimensional grid structure thing example weight control
System is in 3g；
（5）Broken
Three-dimensional grid structure thing after will be expanded is crushed by disintegrating machine, forms particle, the size of described particle is 6mm；
（6）Granulation
Particle, oil foot and melting chemical fertilizer are granulated in Squeezinggranulator, is formed swelling slow releasing fertilizer, described comminutor
Rotating speed is 15r/min, and the time of described granulation is 30min, adds butachlor oil while described granulation；
（7）It is dried
Then the swelling slow releasing fertilizer after granulation is dried in an oven, the time of described drying is 7h, the temperature of described drying
For 65 DEG C；
（8）Cooling
Take out cooling after drying, and sieved by screening machine, then packed.
Embodiment 3
A kind of preparation technology of swelling slow releasing fertilizer, comprises the steps：
（1）Comminution pretreatment
First rotten corn Universalpulverizer is crushed 20min, the screen cloth then passing through 4mm is screened, described rotten corn
Water content be 15%；
（2）Weigh
Then weigh the rotten corn after urea and comminution pretreatment in proportion, the ratio of described urea and rotten corn is 2:1,
The particle diameter of described urea is 0.5mm；
（3）Mixing
Material after weighing is put in mixer respectively and is stirred mixing, form compound, the time of described mixing is
25min, the temperature of described mixing is 50 DEG C；
（4）Expanded
Then compound is divided to put into and in single screw squeezing expansion machine, carry out extrusion, form three-dimensional grid structure
Thing, the pressure of described single screw squeezing expansion machine is 7MPa, and the temperature of described single screw squeezing expansion machine is 130 DEG C, described list
The die diameter of screw extrusion machine is 4mm, described expanded after three-dimensional grid structure thing carried out with the mensure of moisture content, described
Assay method is by three-dimensional grid structure thing pulverizing and jevigating, crosses 40 mesh sieves, then makes three-dimensional grid structure thing example weight control
System is in 4 g；
（5）Broken
Three-dimensional grid structure thing after will be expanded is crushed by disintegrating machine, forms particle, the size of described particle is 7mm；
（6）Granulation
Particle, oil foot and melting chemical fertilizer are granulated in Squeezinggranulator, is formed swelling slow releasing fertilizer, described comminutor
Rotating speed is 20r/min, and the time of described granulation is 40min, adds butachlor oil while described granulation；
（7）It is dried
Then the swelling slow releasing fertilizer after granulation is dried in an oven, the time of described drying is 8h, the temperature of described drying
For 70 DEG C；
（8）Cooling
Take out cooling after drying, and sieved by screening machine, then packed.
After above method, take out sample respectively, measurement result is as follows：
| Detection project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Existing index |
| Compression strength（N） | 24.8 | 27.4 | 26.6 | 18.7 |
| Production cost reduced rate（%） | 19 | 27 | 23 | 0 |
| Nutrient release rate（%） | 92 | 95 | 94 | 85 |
Can be drawn according to above table data, when the parameter of embodiment 2, the swelling slow releasing fertilizer after preparation compares prior art
The compression strength of the swelling slow releasing fertilizer after preparation is high, and nutrient release rate and production cost reduced rate increased, now more
Be conducive to the preparation of swelling slow releasing fertilizer.
The invention provides a kind of preparation technology of swelling slow releasing fertilizer, with the rotten grain in storage for years of agricultural production discarded object corn
For raw material, it is mixed in proportion with urea, new slow release fertilizer is prepared using extruding and puffing technology technique, and to its slow release
Energy, structure, Releasing Mechanism etc. are inquired into.This slow release fertilizer preparation process is simple, cheap, biodegradability are good,
Do not cause secondary pollution, lay a good foundation for producing the slow release fertilizer being available for field crop administration, wide market.
Above-described is only the preferred embodiment of the present invention it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, some deformation can also be made and improve, these broadly fall into the present invention
Protection domain.
Claims (6)
1. a kind of preparation technology of swelling slow releasing fertilizer is it is characterised in that comprise the steps：
（1）Comminution pretreatment
First rotten corn Universalpulverizer is crushed 10-20min, the screen cloth then passing through 2-4mm is screened；
（2）Weigh
Then weigh the rotten corn after urea and comminution pretreatment in proportion, the ratio of described urea and rotten corn is 1:1-
2:1；
（3）Mixing
Material after weighing is put in mixer respectively and is stirred mixing, form compound, the time of described mixing is
15-25min, the temperature of described mixing is 30-50 DEG C；
（4）Expanded
Then compound is divided to put into and in single screw squeezing expansion machine, carry out extrusion, form three-dimensional grid structure
Thing, the pressure of described single screw squeezing expansion machine is 5-7MPa；
（5）Broken
Three-dimensional grid structure thing after will be expanded is crushed by disintegrating machine, forms particle, the size of described particle is 5-
7mm；
（6）Granulation
Particle, oil foot and melting chemical fertilizer are granulated in Squeezinggranulator, is formed swelling slow releasing fertilizer, described comminutor
Rotating speed is 10-20r/min, and the time of described granulation is 20-40min；
（7）It is dried
Then the swelling slow releasing fertilizer after granulation is dried in an oven, the time of described drying is 6-8h, the temperature of described drying
Spend for 60-70 DEG C；
（8）Cooling
Take out cooling after drying, and sieved by screening machine, then packed.
2. according to a kind of swelling slow releasing fertilizer described in claim 1 preparation technology it is characterised in that：Described step（1）In
The water content of rotten corn is 13-15%.
3. according to a kind of swelling slow releasing fertilizer described in claim 1 preparation technology it is characterised in that：Described step（2）In
The particle diameter of urea is 0.3-0.5mm.
4. according to a kind of swelling slow releasing fertilizer described in claim 1 preparation technology it is characterised in that：Described step（4）In
The temperature of single screw squeezing expansion machine is 110-130 DEG C, and the die diameter of described single screw squeezing expansion machine is 2-4mm.
5. according to a kind of swelling slow releasing fertilizer described in claim 1 preparation technology it is characterised in that：Described step（4）In
After expanded, three-dimensional grid structure thing is carried out with the mensure of moisture content, described assay method is that three-dimensional grid structure thing is crushed mill
Carefully, cross 40 mesh sieves, so that three-dimensional grid structure thing example weight is controlled in 2-4 g.
6. according to a kind of swelling slow releasing fertilizer described in claim 1 preparation technology it is characterised in that：Described step（6）In
Butachlor oil is added while granulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740540.2A CN106396791A (en) | 2016-08-29 | 2016-08-29 | Preparation process of puffed slow-release fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740540.2A CN106396791A (en) | 2016-08-29 | 2016-08-29 | Preparation process of puffed slow-release fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106396791A true CN106396791A (en) | 2017-02-15 |
Family
ID=58002360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610740540.2A Withdrawn CN106396791A (en) | 2016-08-29 | 2016-08-29 | Preparation process of puffed slow-release fertilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106396791A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107141127A (en) * | 2017-06-28 | 2017-09-08 | 宿州市逢源生物科技有限公司 | A kind of method that application puffing technique prepares degrading slow release urea fertilizer |
| CN107652070A (en) * | 2017-11-06 | 2018-02-02 | 张培栋 | Ecological sponge fertilizer is produced with the Chinese medicine slag treatment of wastes with processes of wastes against one another |
-
2016
- 2016-08-29 CN CN201610740540.2A patent/CN106396791A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107141127A (en) * | 2017-06-28 | 2017-09-08 | 宿州市逢源生物科技有限公司 | A kind of method that application puffing technique prepares degrading slow release urea fertilizer |
| CN107652070A (en) * | 2017-11-06 | 2018-02-02 | 张培栋 | Ecological sponge fertilizer is produced with the Chinese medicine slag treatment of wastes with processes of wastes against one another |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170215 |