CN108794182A - Slow-releasing composite material and its preparation method and application - Google Patents
Slow-releasing composite material and its preparation method and application Download PDFInfo
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- CN108794182A CN108794182A CN201810760605.9A CN201810760605A CN108794182A CN 108794182 A CN108794182 A CN 108794182A CN 201810760605 A CN201810760605 A CN 201810760605A CN 108794182 A CN108794182 A CN 108794182A
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
- C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
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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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- 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
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
First inorganic layer and the second inorganic layer are combined by a kind of slow-releasing composite material by organic matter, and the organic matter is as binder.The raw material of slow-releasing composite material provided by the invention, use is green material, in the soil without apparent residual, realizes the close friend of environment.In this, as packaging material, inhibitor is coated in composite material, it is suppressed that the high active ingredient of volatility is (such as：Chlorine pyridine) loss, improve storage stability.
Description
Technical field
The present invention relates to a kind of composite material more particularly to a kind of materials being combined by inorganic matter, and there is sustained release to make
With using it as capsule material, cladding active material, can significantly delay the release of active material, be suitable for improving the fertilizer efficiency of chemical fertilizer.
Background technology
Sustained release refers to the speed for extending substance dissolution (or volatilization) by technological means, is common in formulation art, pass through by
Compound is wrapped in degradation material, so that compound therein is gradually dissolved out release with material hydrolysis/enzymolysis, to prolong
The rate of releasing drug of slow drug reduces the absorption rate that drug enters body, extends the compliance that administration time improves sufferer, Yu Zhi
It treats and maintains to be suitble to blood concentration in window, poisonous side effect of medicine is reduced, to play the preparation of more preferably therapeutic effect.Suitable for reality
Now sustained release purpose material is usually organic polymer, such as：Liposome, PLGA and chitosan etc..
Agricultural production at present is higher to the dependency degree of chemical fertilizer, and the overall utilization of wherein nitrogenous fertilizer is only 30%~35%,
It about 30% or more is lost by approach such as leaching loss, volatilization and rainwashes, and about 30% or so is decomposed by the microorganisms consumption.Example
Such as：It is converted into ammonium nitrogen quickly under urase effect in the soil after urea is manured into soil, ammonium nitrogen changes in high pH soil
For Ammonia valatilization.Certain bacteriums in soil can make ammonium nitrogen generation nitrification/denitrification be converted into nitrate nitrogen or nitrous state
Nitrogen, nitrate nitrogen easily leaching loss in the soil, and nitrite nitrogen can be in gaseous loss in the form of nitrogen oxide, cause nitrogenous fertilizer
A large amount of losses, reduce the utilization rate of fertilizer nitrogen, cause the huge waste of resource, while also resulting in underground water and soil face source
Pollution, cause greenhouse gases effect and the eutrophication of water body.
CN101434502B discloses a kind of Synergistic slow release nitrogen fertilizer and preparation method thereof, describes biochemical restrainer
(urease inhibitor and nitrification inhibitor) and synergist (poly-aspartic-acid) are added in urea nitrogenous fertilizer and obtain the skill of composite nitrogen fertilizer
Art.It is particular by mechanically or manually puddling method, above-mentioned additive agent mixture and the urea nitrogenous fertilizer under molten condition is direct
It is mixed to get described synergistic N fertilizer.Wherein biochemical restrainer content is from 0.5-10% etc..The technological process is complicated, needs essence
Really control mixture length, while biochemical additive loses because of high temperature highly volatile, and lack and the sustained release of biochemical additive is protected
Protection mechanism, thus its active ingredient is easily lost in storing process.
CN101891543A discloses a kind of preparation method of granular compound fertilizer, describes attapulgite clay, urine
Element and potassium dihydrogen phosphate are as fertilizer kernel, crossslinked sodium alginate (crosslinking agent CaCl2) it is used as fertilizer kernel film, water imbibition
Resin is as fertilizer outer layer coating.Although the technique plays the purpose of fertilizer slow release to a certain extent, can not have
The nitrification-denitrification leaching loss of the volatilization and ammonium nitrogen of ammonium nitrogen in the soil is alleviated on effect ground, so that the profit of nitrogen
It could not be improved with rate.Simultaneously as the materials such as high-cost sodium alginate has been used to make the at high price of product.
CN101434504B discloses a kind of Synergistic slow release nitrogen fertilizer and preparation method thereof, describes and biochemical presses down two kinds
Preparation (urease inhibitor and nitrification inhibitor), synergist (poly-aspartic-acid) and additive (humic acid, diatomite etc.) add
Enter the technology in urea nitrogenous fertilizer.One is by fluidized-bed process, above-mentioned various additives and organic solvent are made into suspension,
Spray to urea fertilizer particle surface；The second is by mechanically or manually puddling method, by above-mentioned various additives mixture with
Urea nitrogenous fertilizer under molten condition is mixed to get synergistic N fertilizer.Wherein biochemical restrainer content is from 0.1-10% etc..Two kinds of works
Skill flow is complicated, and biochemical additive etc. easily loses in technical process is because of high temperature process, and lacks suitable sustained release and protect
Protection mechanism, active ingredient are easily lost in storing process.
CN102557814 and CN102557838A discloses a kind of Multi-functional slow-release urea fertilizer and preparation method thereof,
It describes synergist (poly-aspartic-acid), sustained release agent (urease inhibitor and nitrification inhibitor) and some plant growths are micro-
Secondary element is mixed into suspension by mechanical agitation, is directly added into existing granular urea high-tower granulation technological process, and molten
Melt urea urine slurry mixing granulation to obtain.Wherein biochemical restrainer content is from 0.1-10% etc..The technological process is complicated, and biochemistry adds
Add agent etc. in technical process because high temperature easily loses, and lack suitable sustained release protection mechanism, active ingredient easily exists
It is lost in storing process.
CN102584480B and CN102617254A discloses a kind of prepare containing N-serve (nitrification suppression
Preparation) the latex suspending agent for nitrogenous fertilizer synergy specific formula and technique.The latex suspending agent can be sprayed on nitrogenous fertilizer
Particle surface obtains the composite fertilizer of the solid urea containing nitrification inhibitor/amino nitrogenous fertilizer.Equally, this particle surface sprays legal system
Standby product lacks suitable sustained release protection mechanism to nitrification inhibitor, and active ingredient is easily damaged in storing process
It loses.
CN103772074A discloses a kind of utilization fluid bed coating process, by dicyandiamide and the chloro- 6- trichloromethyls pyrroles of 2-
One or both of pyridine nitrification inhibitor is sprayed on N P and K at 70-100 DEG C using the coated fertilizer based on polyethylene wax
Compound fertilizer core surface finally wraps Sodium Polyacrylate water-retaining agent, to obtain three-layer nuclear shell knot in a manner of rolling and stick
The long-acting special fertilizer for sweet potato of structure.Nitrification inhibitor easily loses during high temperature production in the patented technology, water-retaining agent
Coating easily causes the problems such as storage stability.
CN103524272A discloses a kind of utilization spouted bed coating machine, and by N-serve, (nitrification inhibits
Agent) solid and coating agent be wrapped in N P and K composite granulated fertilizer surface at 80 DEG C, and adds talcum powder as antitack agent, to
The technology of the compound fertilizer containing N-serve 0.2%~0.4% is obtained, but talcum powder can not form densification
Release membranes, the volatilization of chlorine pyridine cannot be prevented.
Invention content
It is an object of the present invention to provide a kind of slow-releasing composite materials, are combined by two layers of inorganic material so that
The substance being coated in material realizes sustained release.
It, can be effective it is another object of the present invention to provide a kind of slow-releasing composite material as packaging material for coating chemical fertilizer
Improve the fertilizer efficiency of chemical fertilizer.
It is improved as packaging material for coating conditioning agent it is yet a further object of the present invention to provide a kind of slow-releasing composite material
The storage stability of conditioning agent.
A further object of the present invention is to provide a kind of slow-releasing composite material as packaging material for coating nitrogenous fertilizer, comprehensive drop
Low ammonia volatilization, the effect for improving rice yield and overground part nitrogenous fertilizer.
A further object of the present invention is to provide a kind of preparation method of slow-releasing composite material.
A kind of slow-releasing composite material provided by the invention, by organic matter by the first inorganic layer and the second inorganic layer it is compound and
At.
Organic matter is as binder, such as：But be not limited to sucrose, agar, urea, chitosan, modified cellulose ethers, starch,
Guar gum, polyvinyl alcohol (PVA), (solid content is such as acrylic emulsion：40%~50%) and the one or more of aqueous polyurethane,
Bonding is implemented to the first inorganic layer and the second inorganic layer.It is organic for the different organic matters of application or the state of inorganic layer surface
There might not be apparent boundary to make organic matter between object and the first inorganic layer and between organic matter and the second inorganic layer
It is easy to distinguish with the first inorganic layer and organic matter and the second inorganic layer.
Material used in first inorganic layer is such as：But it is not limited to silica, kaolin, talcum powder, attapulgite, diatom
The one or two of soil, clay, Cosan and calcium magnesium phosphate.
Material used in second inorganic layer is such as：But it is not limited to silica, kaolin, talcum powder, attapulgite, diatom
The one or two of soil, clay, Cosan and calcium magnesium phosphate.
First inorganic layer is identical as the material used in the second inorganic layer.
Application using slow-releasing composite material provided by the invention as packaging material in manufacturing slow release fertilizer.Slow-releasing composite material
Wherein by packages such as chemical fertilizer and conditioning agents, the sustained release for realizing substance improves the fertilizer efficiency of chemical fertilizer and the stable storing of conditioning agent
Property.
A kind of specific implementation mode manufacturing slow release fertilizer using slow-releasing composite material provided by the invention as packaging material, should
Slow release fertilizer includes slow-releasing composite material, chemical fertilizer and conditioning agent, and cryptomere, including blister cavities, chemical fertilizer and tune is made in slow-releasing composite material
Section agent is placed in blister cavities, and chemical fertilizer is the particle of diameter 0.1mm~10mm, and conditioning agent is overlying on outside chemical fertilizer.
Chemical fertilizer granule by nitrogenous fertilizer (such as：But be not limited to urea, ammonium nitrate and ammonium sulfate), phosphate fertilizer (such as：But it is not limited to phosphoric acid
Ammonium, double superhosphate, monoammonium phosphate and Diammonium phosphate (DAP)), one kind or several of potash fertilizer (potassium sulfate and potassium chloride) and agricultural additive
Kind is made.
Agricultural additive, such as：But it is not limited to calcium carbonate, clay and compound trace element fertilizer (such as：Zinc sulfate, manganese sulfate and sulfuric acid are sub-
Iron).These additives are applied to the present invention alone or in combination.
Nitrogenous fertilizer is wrapped up wherein using the slow-releasing composite material of the present invention provided as packaging material, effectively extends urea (acyl
Amine) state nitrogenous fertilizer fertilizer efficiency period, so that fertilizer efficiency period was extended to from 30 days 60 days, the total term of validity of fertilizer reaches 120 days or so.
Urease inhibitor is a kind of substance that can inhibit urease activity in soil, can prevent or press down over a period to come
Amidonitrogen is converted into ammonium hydroxide and ammonia in antidiuresis element, it reduces ammonia by slowing down the hydrolysis rate of urea in soil
Volatilization loss and further nitrification.N- butylthiophosphoric triamide (N- (n-butyl) thiophosphrictriamide,
NBPT) it is one of current most effective soil urease inhibitor.The study found that in the good nonacid soil of aeration,
NBPT can be effectively reduced the volatilization of gaseous ammonia, while also weaken the formation of nitrate nitrogen, to improve the utilization rate of nitrogen.
Nitrification inhibitor can effectively inhibit the activity of nitrification/denitrifying bacteria in soil, reduce ammonium nitrogen and be converted into Asia
Nitrate nitrogen and nitrate nitrogen extend the retention time of ammonium nitrogen in the soil, to increase the term of validity of nitrogenous fertilizer.In all nitrifications
In inhibitor, N-serve (Nitrapyrin, chlorine pyridine) connects by stringent laboratory toxicological test, crop field
Continuous experiment and half-life period, which are examined, finds it while with high efficiency nitrification/denitrification inhibition, to soil environment without not
Good influence is a kind of nitrification inhibitor of safe and reliable U.S. EPA approval, is widely used in maize field production in North America.
But the vapour pressure of chlorine pyridine is higher, in 70 DEG C or more easily distillations.
Using slow-releasing composite material provided by the invention as packaging material and by conditioning agents such as urease inhibitor and nitrification inhibitors
Equal packages wherein, through heat store up accelerated test 2 weeks, and contained conditioning agent still keeps 80% or more, the storage-stable of nitrification inhibitor
Property can reach 2 years, effectively improve the storage stability of conditioning agent.
Urease inhibitor is such as：But it is not limited to normal-butyl thiophosphoryl triamine (nBPT), diphenylphosphoryl diamines, quinhydrones, quinone hydrogen
Quinone and urea analog are (such as：Thiocarbamide, phenylurea etc.) etc..These substances are applied to the present invention alone or in combination.
Nitrification inhibitor is such as：But 2- chloro- 6- (benzotrichloride) pyridine, guanyl thiourea, dicyandiamide, methyl -4 2- are not limited to,
Bis- (benzotrichloride) s-triazine of 6-, 2- sulphathiazole, 3,4- dimethyl pyrazoles phosphate, 3,5- dimethyl pyrazoles, 3,5- diformazans
Base pyrazoles phosphate, 1- methylamine acyl group -3- methylpyrazoles, -1 carboxylic acid amides of 1- methylpyrazoles, 3- methylpyrazoles, the chloro- 6- (trichlorines of 2-
Methyl)-pyridine and the chloro- 3- methylpyrazoles of 4- etc..These substances are applied to the present invention alone or in combination.
A method of slow-releasing composite material of the present invention is prepared, is included the following steps：
The first inorganic material is imposed on carrier, and dry, forms the first inorganic layer；
Later, in 0 DEG C~80 DEG C, organic matter is imposed in the first inorganic layer surface, then imposes second of inorganic material again,
It is and dry so that the first inorganic layer and the second inorganic layer are compound, form slow-releasing composite material.
The method that another kind prepares slow-releasing composite material of the present invention, includes the following steps：
The first inorganic material is imposed on pelleted substrate, is rolled, and is dry, forms the first inorganic layer；
Later, in 0 DEG C~80 DEG C, under the conditions of 10rpm~800rpm, organic matter is imposed in the first inorganic layer surface, then
Second of inorganic material is imposed again, is rolled, and is dry so that the first inorganic layer and the second inorganic layer are compound, and it is slow to form graininess
Release composite material.
The advantageous effect that technical solution of the present invention is realized：
The raw material that slow-releasing composite material provided by the invention uses is green material, in the soil without apparent residual
It stays, realizes the close friend of environment.
Slow-releasing composite material provided by the invention, production cost is low, and preparation process is easy to operate, and equipment investment is low, accounts for
Ground area is few, can carry out industrialized production, is suitable for manufacture most granular fertilizer at present, improves fertilizer efficiency.
Inhibitor is coated in composite material by slow-releasing composite material provided by the invention as packaging material, it is suppressed that volatilization
The high active ingredient of property is (such as：Chlorine pyridine) loss, improve storage stability.
Chemical fertilizer is coated in composite material by slow-releasing composite material provided by the invention as packaging material, significantly extends fertilizer
Fertilizer efficiency period.
Nitrogenous fertilizer is coated in composite material by slow-releasing composite material provided by the invention as packaging material, effectively extends urea
The fertilizer efficiency period of (amide) state nitrogenous fertilizer is mixed and made into base manure with urea granules fertilizer, and a radix heap can meet crop and entirely grow
Season the needs to nitrogen.
Description of the drawings
Fig. 1 is slow release fertilizer one embodiment organigram of the slow-releasing composite material of the present invention as packaging material for manufacture.
Specific implementation mode
Below in conjunction with attached drawing detailed description of the present invention technical solution.The embodiment of the present invention is only to illustrate the skill of the present invention
Art scheme and it is unrestricted, although being described the invention in detail with reference to preferred embodiment, those skilled in the art
It should be appreciated that can be modified or replaced equivalently to the technical solution of invention, without departing from the essence of technical solution of the present invention
God and range, should all cover in scope of the presently claimed invention.
The slow-release carbamide granular fertilizer of 1 chlorine pyridine nitrification inhibitor of embodiment is produced
(1) urea fertilizer is kernel, weighs 2 kilograms of the urea that particle diameter is 3mm, is added a diameter of 40cm~50cm's
In disk drum-type seed-coating machine, with 30rpm~500rpm uniform rotation.The chlorine pyridine ethyl acetate solution 200g of a concentration of 35wt% is equal
It is even to impose in particle surface, it is lasting to rotate, it prevents from luming.
(2) the 50 mesh diatomite that 90g is dry at 120 DEG C in advance are uniformly added into the disk drum of step (1), with 300rpm
Rotating speed is sufficiently stirred 5 minutes, completes internal layer cladding (even if chemical fertilizer and inhibitor etc. are coated in the first inorganic layer)；
(3) organic matter is imposed in the disk drum of step (2), is sufficiently mixed 5 minutes, it is pre-dry that 100g is then added
50 mesh diatomite persistently rotate 5 minutes, and obtain slow release fertilizer.
By the slow release fertilizer in step (3) through 70 DEG C~100 DEG C dryings 1 hour to get to dry slow release fertilizer.
Fig. 1 is slow release fertilizer one embodiment organigram of the slow-releasing composite material of the present invention as packaging material for manufacture.
As shown in Figure 1, slow release chemical fertilizer includes sustained release packaging material, fertilizer 1 and conditioning agent 2.Packaging material is sustained by organic matter 4 by the first inorganic layer 3
It is combined with the second inorganic layer 5, is in cryptomere, fertilizer and conditioning agent are placed in blister cavities, and fertilizer is of diameter 0.1mm~10mm
Grain, conditioning agent are overlying on outside fertilizer.
Various fertilizer are produced using the above method, refer to 1~table of table 9.Wherein, fertilizer shown in Tables 1 and 2 is not used by the
One inorganic layer and the compound sustained release packaging material of the second inorganic layer, slow release fertilizer refer to 3~table of table 9.Analysis test shows that wherein 2- is chloro-
6- (trichloromethyl)-pyridine designs 95% or more of content as nitrification inhibitor content for it, and technological process loss is small.Through 54
DEG C heat storage accelerated test 2 weeks, nitrification inhibitor maintains 80% or more.
Table 1
| Project | Kernel | First inorganic layer | Organic matter | Second inorganic layer | Nitrification inhibitor |
| Ingredient | Urea | N/A | Urea | Diatomite | Chlorine pyridine |
| Theoretical content | 92.50% | N/A | 1.00% | 5.00% | 1.50% |
| Actual content | 80.10% | N/A | N/A | N/A | 1.20% |
| Content after heat storage | 64.00% | N/A | N/A | N/A | 0.70% |
Note：N/A expressions do not provide in table.
Table 2
Note：N/A expressions do not provide in table.
Table 3
Note：N/A expressions do not provide in table.
Table 4
| Project | Kernel | First inorganic layer | Organic matter | Second inorganic layer | Nitrification inhibitor |
| Ingredient | Urea | Calcium magnesium phosphate | Guar gum | Diatomite | Chlorine pyridine |
| Theoretical content | 90.00% | 3.50% | 1.00% | 3.00% | 1.50% |
| Actual content | 88.04% | N/A | N/A | N/A | 1.41% |
| Content after heat storage | 85.31% | N/A | N/A | N/A | 1.28% |
Note：N/A expressions do not provide in table.
Table 5
| Project | Kernel | First inorganic layer | Organic matter | Second inorganic layer | Nitrification inhibitor |
| Ingredient | Urea | Cosan | Acrylic acid | Diatomite | Western pyridine |
| Theoretical content | 90.00% | 3.50% | 1.00% | 3.00% | 1.50% |
| Actual content | 89.24% | N/A | N/A | N/A | 1.46% |
| Content after heat storage | 86.21% | N/A | N/A | N/A | 1.31% |
Note：N/A expressions do not provide in table.
Table 6
Note：N/A expressions do not provide in table.
Table 7
| Project | Kernel | First inorganic layer | Organic matter | Second inorganic layer | Nitrification inhibitor |
| Ingredient | Urea | Diatomite | PVA | Diatomite | Chlorine pyridine |
| Theoretical content | 90.00% | 3.50% | 1.00% | 3.00% | 1.50% |
| Actual content | 88.90% | N/A | N/A | N/A | 1.42% |
| Content after heat storage | 86.47% | N/A | N/A | N/A | 1.33% |
Note：N/A expressions do not provide in table.
Table 8
Note：N/A expressions do not provide in table.
Table 9
Note：N/A expressions do not provide in table.
In actual use, it is only necessary to slow release fertilizer 1kg is taken, is mixed with the pure urea granules fertilizer of 15kg~20kg, simple agitation,
Tradition can be used to be operated using the mode of base manure.
Slow-release carbamide granular fertilizer of the embodiment 2 containing nitrification inhibitor and urease inhibitor is produced
(1) Pan Gushibao that a diameter of 40cm~50cm is added in urea 2kg and the 4g nBPT that particle diameter is 3mm is weighed
In clothing machine, with 30rpm~70rpm uniform rotation.The chlorine pyridine acetone soln 200g of a concentration of 30wt% is imposed on into particle surface, is held
Continuous rotation, prevents from luming；
(2) the 50 mesh diatomite that 90g is dry at 120 DEG C in advance are uniformly added into the disk drum of step (1), with 70rpm
Rotating speed is sufficiently stirred 5 minutes, completes internal layer cladding (even if chemical fertilizer and inhibitor etc. are coated in the first inorganic layer)；
(3) organic matter is imposed in the disk drum of step (2), is sufficiently mixed 5 minutes, 100g pre-dry 50 is then added
Mesh diatomite persistently rotates 5 minutes, and obtains slow release fertilizer.
By the slow release fertilizer in step (3) through 70 DEG C~100 DEG C dryings 1 hour to get to dry slow release fertilizer.
Various fertilizer are produced using the above method, refer to 1~table of table 9.Wherein, fertilizer shown in Tables 1 and 2 is not used by the
One inorganic layer and the compound sustained release packaging material of the second inorganic layer, slow release fertilizer refer to 3~table of table 9.Analysis test shows that wherein 2- is chloro-
6- (trichloromethyl)-pyridine designs 95% or more of content as nitrification inhibitor content for it, and technological process loss is small.Through 54
DEG C heat storage accelerated test 2 weeks, nitrification inhibitor maintains 80% or more.
Table 10
Note：N/A expressions do not provide in table.
Table 11
Note：N/A expressions do not provide in table.
Table 12
Note：N/A expressions do not provide in table.
Table 13
| Project | Kernel | First inorganic layer | Organic matter | Second inorganic layer | Inhibitor |
| Ingredient | Urea | Diatomite | Acrylic acid | Diatomite | Chlorine pyridine/nBPT |
| Theoretical content | 90.00% | 3.50% | 1.00% | 3.00% | 1.50%/2 ‰ |
| Actual content | 88.67% | N/A | N/A | N/A | 1.42%/1.89 ‰ |
| Content after heat storage | 86.57% | N/A | N/A | N/A | 1.31%/1.82 ‰ |
Note：N/A expressions do not provide in table.
Table 14
Note：N/A expressions do not provide in table.
Table 15
| Project | Kernel | First inorganic layer | Organic matter | Second inorganic layer | Nitrification inhibitor |
| Ingredient | Urea | Diatomite | PVA | Diatomite | Chlorine pyridine/nBPT |
| Theoretical content | 90.00% | 3.50% | 1.00% | 3.00% | 1.50%/2 ‰ |
| Actual content | 87.62% | N/A | N/A | N/A | 1.41%/1.75 ‰ |
| Content after heat storage | 84.37% | N/A | N/A | N/A | 1.36%/1.68 ‰ |
Note：N/A expressions do not provide in table.
In actual use, it is only necessary to take slow release fertilizer 1kg, with 10kg~20kg it is pure it is nitrogenous (such as：Urea) granular fertilizer mixing,
Simple agitation, you can operated in such a way that tradition applies base manure.
Claims (17)
1. a kind of slow-releasing composite material, it is characterised in that the first inorganic layer and the second inorganic layer are combined by organic matter, institute
The organic matter stated is as binder.
2. slow-releasing composite material according to claim 1, it is characterised in that the organic matter selected from sucrose, agar,
Urea, chitosan, modified cellulose ethers, starch, guar gum, polyvinyl alcohol, acrylic emulsion and aqueous polyurethane one kind or
It is several.
3. slow-releasing composite material according to claim 1, it is characterised in that first inorganic layer is selected from titanium dioxide
The one or two of silicon, kaolin, talcum powder, attapulgite, diatomite, clay, Cosan and calcium magnesium phosphate.
4. slow-releasing composite material according to claim 1, it is characterised in that second inorganic layer is selected from titanium dioxide
The one or two of silicon, kaolin, talcum powder, attapulgite, diatomite, clay, Cosan and calcium magnesium phosphate.
5. application of the slow-releasing composite material according to claim 1 as packaging material in manufacturing slow release fertilizer.
6. slow-releasing composite material according to claim 1 is used to wrap the one or more of chemical fertilizer and conditioning agent as packaging material
It wraps up in wherein and manufactures slow release fertilizer.
7. purposes according to claim 6, it is characterised in that the chemical fertilizer granule is by nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and agricultural
The one or more of additive are made, and the agricultural additive is selected from calcium carbonate, clay, zinc sulfate, manganese sulfate and sulfuric acid
The one or more of ferrous iron.
8. purposes according to claim 6, it is characterised in that the conditioning agent includes that urease inhibitor and nitrification inhibit
The one or more of agent.
9. purposes according to claim 8, it is characterised in that the urease inhibitor is selected from normal-butyl thiophosphoryl
The one or more of triamine, diphenylphosphoryl diamines, quinhydrones, quinhydrone and urea analog.
10. purposes according to claim 8, it is characterised in that the nitrification inhibitor is selected from normal-butyl thiophosphoryl
The one or more of triamine, diphenylphosphoryl diamines, quinhydrones, quinhydrone and urea analog.
11. purposes according to claim 6, it is characterised in that store up accelerated test 2 weeks through heat, the slow-releasing composite material
Contained in the conditioning agent keep 80% or more.
12. purposes according to claim 6, it is characterised in that the nitrification inhibitor is in the slow-releasing composite material
Middle storage stability reaches 2 years.
13. purposes according to claim 6, it is characterised in that the chemical fertilizer is urea.
14. purposes according to claim 6, it is characterised in that the slow-releasing composite material extends the fertilizer of urea nitrogen fertilizer
The effect phase, total term of validity reached 120 days to 60 days.
15. purposes according to claim 6, it is characterised in that the slow release fertilizer includes the sustained release composite wood
Cryptomere, including blister cavities is made in material, chemical fertilizer and conditioning agent, the slow-releasing composite material, and chemical fertilizer and conditioning agent are placed in blister cavities, changes
Fertilizer is the particle of diameter 0.1mm~10mm, and conditioning agent is overlying on outside chemical fertilizer.
16. a kind of method for producing the slow-releasing composite material described in one of Claims 1 to 4, including
The first inorganic material is imposed on carrier, and dry, forms the first inorganic layer；
Later, in 0 DEG C~80 DEG C, organic matter is imposed in the first inorganic layer surface, then imposes second of inorganic material again, and do
It is dry so that the first inorganic layer and the second inorganic layer are compound, form slow-releasing composite material.
17. a kind of method for producing the slow-releasing composite material described in one of Claims 1 to 4, including
The first inorganic material is imposed on pelleted substrate, is rolled, and is dry, forms the first inorganic layer；
Later, in 0 DEG C~80 DEG C, under the conditions of 10rpm~800rpm, organic matter is imposed in the first inorganic layer surface, is then applied again
It with second of inorganic material, rolls, and dry so that the first inorganic layer and the second inorganic layer are compound, and it is multiple to form particulate slow-release
Condensation material.
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