CN101857484A - Preparation of slow-release enveloped fertilizer - Google Patents
Preparation of slow-release enveloped fertilizer Download PDFInfo
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- CN101857484A CN101857484A CN200910111450A CN200910111450A CN101857484A CN 101857484 A CN101857484 A CN 101857484A CN 200910111450 A CN200910111450 A CN 200910111450A CN 200910111450 A CN200910111450 A CN 200910111450A CN 101857484 A CN101857484 A CN 101857484A
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- fertilizer
- aldehyde resin
- pnenolic aldehyde
- cashew pnenolic
- coated
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Abstract
The invention discloses a slow-release enveloped fertilizer by utilizing natural high-molecular derivative and a production method thereof. The enveloping material of the slow-release fertilizer takes cashew nut shell oil as main raw materials, and adopts a series of chemical techniques to modify the cashew nut shell oil to obtain thermoplastic or thermosetting phenolic derivative, thus achieving the performance of a membrane material needed for enveloping the fertilizer. The membrane material is used for carrying out production of the enveloped fertilizer, the processing technique is simple and easy to implement, the equipment investment is less, small-scale laboratory production can be carried out, and large-scale factory production can also be carried out. The enveloped slow-release fertilizer consists of particle fertilizers and the enveloped material, the mass of an enveloping membrane accounts for 10-50 percent of the total mass of the fertilizer, the slow-release performance is good, and therefore, the enveloped slow-release fertilizer can be used for economic crops of flowers and agroforestry and the like.
Description
One, technical field
The invention belongs to fertilizer manufacturing technology field, be specifically related to a kind of based on natural macromolecule modification thing coated slow release fertilizer and preparation method thereof.
Two, background technology
Because leaching, volatilization take place in traditional chemical fertilizer easily in soil, cause the heavy losses of fertilizer nutrient, and caused the serious environmental pollution; On the other hand, along with the raising of labor cost, repeatedly use traditional chemical fertilizer in the necessary for growth of plant and make the cost of agriculture production can not be in any more.How to reduce fertilizer application frequency, reduce the agroforestry production cost, develop efficient, free of contamination new-type fertilizer, improving utilization rate of fertilizer is the top priority of fertilizer scientific and technical innovation.Development, the production of coated fertilizer have been carried out both at home and abroad in succession.For example: Japanese Patent discloses a kind of preparation method by polyolefine or ethene and vinyl acetate copolymer coated fertilizer.Other patents also disclose and have been used for also having of coated fertilizer film material: the multipolymer of Synolac and consaturated oil, sulphur powder, chitosan and polyvinyl alcohol etc.Along with the minimizing of petroleum resources, price constantly rises, and utilizes the synthetic polymer coated fertilizer to have expensive problem.
Three, summary of the invention
Technical problem to be solved by this invention is: prepare that a kind of cost is low, production technique is simple, can effectively control the coated slow release fertilizer that fertilizer nutrient discharges.
A kind of technical scheme of the present invention is: the thermoset cashew pnenolic aldehyde resin that sprays one deck second stage on the surface of granulated fertilizer, by heating and interpolation conditioning agent the cashew pnenolic aldehyde resin that evenly is coated on the granulated fertilizer surface was further reacted to third stage, described coating accounts for the 10-50% of fertilizer total mass, preferred 15-25%.
Described conditioning agent can be a kind of or two kinds of fillers among talcum powder, lime carbonate, sulphur powder, humic acids, wilkinite, diatomite, the starch, and ratio accounts for the 0-60% of described mould material total mass;
Another kind of technical scheme of the present invention is: at the thermoplastic cashew pnenolic aldehyde resin of the surface of granulated fertilizer spraying one deck, make the cashew pnenolic aldehyde resin solidification that evenly is coated on the granulated fertilizer surface by adding hexamethylenetetramine and conditioning agent.Described coating accounts for the 10-50% of fertilizer total mass, preferred 15-25%.
Described conditioning agent can be a kind of or two kinds of fillers among talcum powder, lime carbonate, sulphur powder, humic acids, wilkinite, diatomite, the starch, and ratio accounts for the 0-60% of described mould material total mass;
1, the mass percent of coated slow release fertilizer is
Granulated fertilizer: 50-90%
Cashew nut shell oil derivative: 10-50%
Conditioning agent: 0-30%
2, the preparation of coated fertilizer
This manufacture method is to carry out coating at particle surface, it is characterized in that described coating is at composite fertilizer or urea granules surface spraying cashew pnenolic aldehyde resin, constantly sprays the conditioning agent powder, logical then warm air drying in the coating process.The coating process is to finish in the rotary drum coating machine.
Concrete manufacturing process is as follows:
1, conditioning agent is crushed to certain order number, metering takes by weighing;
2, granulated fertilizer is put into the rotary drum coating machine, on the fertiliser granulates that rolls, is sprayed the cashew pnenolic aldehyde resin, to particle, form the layer of even demarcation membrane after; Spray phenol resin solution on one side again, Yi Bian be spilled into the conditioning agent powder; Logical warm air drying is sieved after the drying, packs.
Embodiment
Embodiment 1:
The particle NPK composite fertilizer 1kg that takes by weighing particle diameter and be 3-5mm forms the layer of even demarcation membrane Yi Bian spray second stage thermoset cashew pnenolic aldehyde resin on the fertiliser granulates that rolls, Yi Bian add diatomite powder to particle in the rotary drum coating machine; Heat at rotary drum coating machine external application electric furnace, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried more on one side, add diatomite powder on one side, repeat aforesaid operations again, all be wrapped in the surface of fertilizer until 270g second stage thermoset cashew pnenolic aldehyde resin and 70g diatomite, the fertilizer drying, sieve, pack.
Embodiment 2:
The granular urea 1kg that takes by weighing particle diameter and be 3-5mm forms the layer of even demarcation membrane Yi Bian spray second stage thermoset cashew pnenolic aldehyde resin on the granular urea that rolls, Yi Bian add diatomite powder to particle in the rotary drum coating machine; Heat at rotary drum coating machine external application electric furnace, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried more on one side, add diatomite powder on one side, repeat aforesaid operations again, all be wrapped in the surface of fertilizer until 270g second stage thermoset cashew pnenolic aldehyde resin and 70g diatomite, the fertilizer drying, sieve, pack.
Embodiment 3:
The particle NPK composite fertilizer 1kg that takes by weighing particle diameter and be 3-5mm forms the layer of even demarcation membrane Yi Bian spray second stage thermoset cashew pnenolic aldehyde resin on the fertiliser granulates that rolls, Yi Bian add calcium carbonate powders to particle in the rotary drum coating machine; Heat at rotary drum coating machine external application electric furnace, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried more on one side, add calcium carbonate powders on one side, repeat aforesaid operations again, all be wrapped in the surface of fertilizer until 200g second stage thermoset cashew pnenolic aldehyde resin and 50g lime carbonate, the fertilizer drying, sieve, pack.
Embodiment 4:
The granular urea 1kg that takes by weighing particle diameter and be 3-5mm forms the layer of even demarcation membrane Yi Bian spray heat cured cashew pnenolic aldehyde resin of second stage on the granular urea that rolls, Yi Bian add calcium carbonate powders to particle in the rotary drum coating machine; Heat at rotary drum coating machine external application electric furnace, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried more on one side, add calcium carbonate powders on one side, repeat aforesaid operations again, all be wrapped in the surface of fertilizer until 210g second stage thermoset cashew pnenolic aldehyde resin and 50g lime carbonate, the fertilizer drying, sieve, pack.
Embodiment 5:
The particle NPK composite fertilizer 1kg that takes by weighing particle diameter and be 3-5mm is in the rotary drum coating machine, and the thermoplasticity cashew pnenolic aldehyde resin that hexamethylenetetramine is added in spraying on one side on the fertiliser granulates that rolls forms the layer of even demarcation membrane to particle, Yi Bian add calcium carbonate powders; Heat at rotary drum coating machine external application electric furnace, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried more on one side, add calcium carbonate powders on one side, repeat aforesaid operations again, until the surface that the cashew pnenolic aldehyde resin and the 50g lime carbonate in 210g second stage all is wrapped in fertilizer, with the fertilizer drying, sieve, pack.
Embodiment 6:
The particle NPK composite fertilizer 1kg that takes by weighing particle diameter and be 3-5mm is in the rotary drum coating machine, on the fertiliser granulates that rolls, spray the thermoplasticity cashew pnenolic aldehyde resin that has added hexamethylenetetramine on one side and to particle, form the layer of even demarcation membrane, Yi Bian add calcium carbonate powders; Heat at rotary drum coating machine external application electric furnace, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried more on one side, add calcium carbonate powders on one side, repeat aforesaid operations again, until the surface that thermoplasticity cashew pnenolic aldehyde resin and the 60g lime carbonate of 120g all is wrapped in fertilizer, with the fertilizer drying, sieve, pack.
Embodiment 7:
The granular urea 1kg that takes by weighing particle diameter and be 3-5mm is in the rotary drum coating machine, and the thermoplasticity cashew pnenolic aldehyde resin that hexamethylenetetramine has been added in spraying on one side on the fertiliser granulates that rolls forms the layer of even demarcation membrane to particle, Yi Bian add diatomite powder; Heat at rotary drum coating machine external application electric furnace, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried more on one side, add diatomite powder on one side, repeat aforesaid operations again, until the surface that thermoplasticity cashew pnenolic aldehyde resin and the 60g diatomite of 120g all is wrapped in fertilizer, with the fertilizer drying, sieve, pack.
Embodiment 8:
The particle NPK composite fertilizer 1kg that takes by weighing particle diameter and be 3-5mm is in the rotary drum coating machine, on the fertiliser granulates that rolls, spray the thermoplastic cashew pnenolic aldehyde resin that has added hexamethylenetetramine and to particle, form the layer of even demarcation membrane, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried again, repeat aforesaid operations again, all be wrapped in the surface of fertilizer until the cashew pnenolic aldehyde resin of 120g, the fertilizer drying, sieve, pack.
Embodiment 9:
The granular urea 1kg that takes by weighing particle diameter and be 3-5mm is in the rotary drum coating machine, on the fertiliser granulates that rolls, spray the thermoplastic cashew pnenolic aldehyde resin that has added hexamethylenetetramine and to particle, form the layer of even demarcation membrane, and toward the logical warm air drying in coating machine the inside, spray the cashew pnenolic aldehyde resin after to be dried again, repeat aforesaid operations again, all be wrapped in the surface of fertilizer until the cashew pnenolic aldehyde resin of 130g, the fertilizer drying, sieve, pack.
Claims (7)
1. a coated slow release fertilizer is at granulated fertilizer surface parcel skim material, it is characterized in that the mould material of coated fertilizer is made up of cashew pnenolic aldehyde resin and conditioning agent, and this film accounts for the 10-50% of fertilizer quality.
2. method according to claim 1 is characterized in that, described cashew pnenolic aldehyde resin is thermoset or thermoplasticity cashew pnenolic aldehyde resin, and the consumption of cashew pnenolic aldehyde resin accounts for the 40-100% of mould material total mass.
3. method according to claim 1 and 2, it is characterized in that, described conditioning agent can be the filler of a kind of among talcum powder, lime carbonate, sulphur powder, humic acids, wilkinite, diatomite, the starch or two kinds, and ratio accounts for the 0-60% of described mould material total mass.
4. the preparation method of coated fertilizer according to claim 1, it is characterized in that, the thermoset cashew pnenolic aldehyde resin that mode by spraying will be reacted to the second stage is coated in the surface of granulated fertilizer equably, form the layer of even film, by heating and interpolation conditioning agent, make the thermoset cashew pnenolic aldehyde resin in second stage continue to be reacted to third stage then.
5. the preparation method of coated fertilizer according to claim 1, it is characterized in that, thermoplastic cashew pnenolic aldehyde resin is coated in equably the surface of granulated fertilizer by the mode of spraying, form the layer of even film, then by adding solidifying agent and conditioning agent, make thermoplasticity cashew pnenolic aldehyde resin equably coating on the surface of granulated fertilizer.
6. according to the preparation method of claim 4 or 5 described coated fertilizers, it is characterized in that, can the thermoset cashew pnenolic aldehyde resin in thermoplastic cashew pnenolic aldehyde resin or second stage be coated in the surface of granulated fertilizer successively equably by the mode of spraying, respectively by the heating or the mode of adding solidifying agent make the cashew pnenolic aldehyde resin equably coating on the surface of granulated fertilizer.
7. method according to claim 1 and 2 is characterized in that, described granulated fertilizer is granular urea or NPK composite fertilizer, and particle size range is 2-8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910111450A CN101857484A (en) | 2009-04-10 | 2009-04-10 | Preparation of slow-release enveloped fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910111450A CN101857484A (en) | 2009-04-10 | 2009-04-10 | Preparation of slow-release enveloped fertilizer |
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| CN101857484A true CN101857484A (en) | 2010-10-13 |
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| CN200910111450A Pending CN101857484A (en) | 2009-04-10 | 2009-04-10 | Preparation of slow-release enveloped fertilizer |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417426A (en) * | 2011-08-15 | 2012-04-18 | 山东金山化肥有限公司 | Production method of spraying sulfoacid resin type sustained and controlled-release fertilizer |
| CN102504171A (en) * | 2011-11-09 | 2012-06-20 | 福建师范大学 | Method for preparing sustained-release material coating agent |
| CN102775157A (en) * | 2011-05-12 | 2012-11-14 | 梅格耐津特集团有限公司 | Components containing carbon refractory and method of manufacturing products |
| CN103588574A (en) * | 2013-11-12 | 2014-02-19 | 东北大学 | Method for preparing slow/controlled release fertilizer by using urea coated with diatomite |
| CN104151073A (en) * | 2014-08-11 | 2014-11-19 | 中国地质大学（武汉） | Preparation method of coated sustained-release fertilizer |
| CN104151520A (en) * | 2014-07-22 | 2014-11-19 | 武汉诺唯凯生物材料有限公司 | Preparation method of modified starch on basis of vegetable fat plasticizer |
| CN105061095A (en) * | 2015-09-16 | 2015-11-18 | 福建师范大学 | Method for preparing film special for slow/controlled release fertilizer by virtue of camellia oleifera polyphenols and application of film to granulated fertilizer |
| CN105859472A (en) * | 2015-02-06 | 2016-08-17 | 虎速产品（加拿大）公司 | Sulphur-based fertilizer composition with humic acid content |
| CN108101697A (en) * | 2017-12-14 | 2018-06-01 | 湖北富邦科技股份有限公司 | A kind of granulated fertilizer and production method with acid soil opsonic action |
| CN113493361A (en) * | 2021-08-02 | 2021-10-12 | 西安唯拓尔农业科技有限公司 | Biological nano resin coated controlled-release boron fertilizer and preparation method thereof |
-
2009
- 2009-04-10 CN CN200910111450A patent/CN101857484A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775157A (en) * | 2011-05-12 | 2012-11-14 | 梅格耐津特集团有限公司 | Components containing carbon refractory and method of manufacturing products |
| CN102775157B (en) * | 2011-05-12 | 2014-09-03 | 梅格耐津特集团有限公司 | Components containing carbon refractory and method of manufacturing products |
| CN102417426A (en) * | 2011-08-15 | 2012-04-18 | 山东金山化肥有限公司 | Production method of spraying sulfoacid resin type sustained and controlled-release fertilizer |
| CN102504171A (en) * | 2011-11-09 | 2012-06-20 | 福建师范大学 | Method for preparing sustained-release material coating agent |
| CN103588574A (en) * | 2013-11-12 | 2014-02-19 | 东北大学 | Method for preparing slow/controlled release fertilizer by using urea coated with diatomite |
| CN103588574B (en) * | 2013-11-12 | 2015-06-17 | 东北大学 | Method for preparing slow/controlled release fertilizer by using urea coated with diatomite |
| CN104151520A (en) * | 2014-07-22 | 2014-11-19 | 武汉诺唯凯生物材料有限公司 | Preparation method of modified starch on basis of vegetable fat plasticizer |
| CN104151073A (en) * | 2014-08-11 | 2014-11-19 | 中国地质大学（武汉） | Preparation method of coated sustained-release fertilizer |
| CN104151073B (en) * | 2014-08-11 | 2016-04-27 | 中国地质大学（武汉） | A kind of preparation method of film-coated and slow release fertilizer |
| CN105859472A (en) * | 2015-02-06 | 2016-08-17 | 虎速产品（加拿大）公司 | Sulphur-based fertilizer composition with humic acid content |
| CN105061095A (en) * | 2015-09-16 | 2015-11-18 | 福建师范大学 | Method for preparing film special for slow/controlled release fertilizer by virtue of camellia oleifera polyphenols and application of film to granulated fertilizer |
| CN108101697A (en) * | 2017-12-14 | 2018-06-01 | 湖北富邦科技股份有限公司 | A kind of granulated fertilizer and production method with acid soil opsonic action |
| CN113493361A (en) * | 2021-08-02 | 2021-10-12 | 西安唯拓尔农业科技有限公司 | Biological nano resin coated controlled-release boron fertilizer and preparation method thereof |
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Application publication date: 20101013 |