CN104150970A - Disc granulation method of granular slow-release magnesium ammonium phosphate fertilizer - Google Patents
Disc granulation method of granular slow-release magnesium ammonium phosphate fertilizer Download PDFInfo
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- CN104150970A CN104150970A CN201410335799.XA CN201410335799A CN104150970A CN 104150970 A CN104150970 A CN 104150970A CN 201410335799 A CN201410335799 A CN 201410335799A CN 104150970 A CN104150970 A CN 104150970A
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- Prior art keywords
- ammonium phosphate
- magnesium ammonium
- acid
- disc
- granulation method
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- MXZRMHIULZDAKC-UHFFFAOYSA-L ammonium magnesium phosphate Chemical compound [NH4+].[Mg+2].[O-]P([O-])([O-])=O MXZRMHIULZDAKC-UHFFFAOYSA-L 0.000 title claims abstract description 73
- 229910052567 struvite Inorganic materials 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005469 granulation Methods 0.000 title claims abstract description 31
- 230000003179 granulation Effects 0.000 title claims abstract description 31
- 239000003337 fertilizer Substances 0.000 title claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 59
- 239000011230 binding agent Substances 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 28
- 239000000243 solution Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 10
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 5
- 229920002678 cellulose Polymers 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 claims description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 4
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical compound CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 claims description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 4
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 230000002045 lasting effect Effects 0.000 claims description 3
- 235000012054 meals Nutrition 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- ASZCVNVMQXNJGH-ZYRRHWMLSA-N (1S,2R,9S,12S)-4,12-dimethyl-13-oxotetracyclo[10.2.1.01,9.03,8]pentadeca-3,5,7-triene-2-carboxylic acid Chemical compound Cc1cccc2[C@H]3CC[C@@]4(C)C[C@@]3(CC4=O)[C@@H](C(O)=O)c12 ASZCVNVMQXNJGH-ZYRRHWMLSA-N 0.000 claims description 2
- ASZCVNVMQXNJGH-UHFFFAOYSA-N Gibberic acid Natural products C12CCC(C3)(C)C(=O)CC23C(C(O)=O)C2=C1C=CC=C2C ASZCVNVMQXNJGH-UHFFFAOYSA-N 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- 150000001413 amino acids Chemical class 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- PGRHXDWITVMQBC-UHFFFAOYSA-N dehydroacetic acid Natural products CC(=O)C1C(=O)OC(C)=CC1=O PGRHXDWITVMQBC-UHFFFAOYSA-N 0.000 claims description 2
- HCPOCMMGKBZWSJ-UHFFFAOYSA-N ethyl 3-hydrazinyl-3-oxopropanoate Chemical compound CCOC(=O)CC(=O)NN HCPOCMMGKBZWSJ-UHFFFAOYSA-N 0.000 claims description 2
- 229940013688 formic acid Drugs 0.000 claims description 2
- 239000001530 fumaric acid Substances 0.000 claims description 2
- 239000004310 lactic acid Substances 0.000 claims description 2
- 235000014655 lactic acid Nutrition 0.000 claims description 2
- 229960000448 lactic acid Drugs 0.000 claims description 2
- 239000003077 lignite Substances 0.000 claims description 2
- PEQJBOMPGWYIRO-UHFFFAOYSA-N n-ethyl-3,4-dimethoxyaniline Chemical compound CCNC1=CC=C(OC)C(OC)=C1 PEQJBOMPGWYIRO-UHFFFAOYSA-N 0.000 claims description 2
- 229940107700 pyruvic acid Drugs 0.000 claims description 2
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 claims description 2
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 229940005605 valeric acid Drugs 0.000 claims description 2
- 235000015097 nutrients Nutrition 0.000 abstract description 6
- 239000008187 granular material Substances 0.000 abstract 3
- 239000002535 acidifier Substances 0.000 abstract 2
- 238000007873 sieving Methods 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 235000015165 citric acid Nutrition 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- JWSMTBMIGYJJJM-UHFFFAOYSA-N magnesium;azane Chemical compound N.[Mg+2] JWSMTBMIGYJJJM-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 150000007524 organic acids Chemical class 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 240000002234 Allium sativum Species 0.000 description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 description 2
- 241000335053 Beta vulgaris Species 0.000 description 2
- 240000007124 Brassica oleracea Species 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- 244000061176 Nicotiana tabacum Species 0.000 description 2
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 244000061456 Solanum tuberosum Species 0.000 description 2
- 235000002595 Solanum tuberosum Nutrition 0.000 description 2
- 244000269722 Thea sinensis Species 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001850 reproductive effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 235000013616 tea Nutrition 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 239000004471 Glycine Substances 0.000 description 1
- 244000241838 Lycium barbarum Species 0.000 description 1
- 235000015459 Lycium barbarum Nutrition 0.000 description 1
- 240000001987 Pyrus communis Species 0.000 description 1
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- CRQQGFGUEAVUIL-UHFFFAOYSA-N chlorothalonil Chemical compound ClC1=C(Cl)C(C#N)=C(Cl)C(C#N)=C1Cl CRQQGFGUEAVUIL-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 208000000509 infertility Diseases 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 231100000535 infertility Toxicity 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000009105 vegetative growth Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The invention relates to a disc granulation method of a granular slow-release magnesium ammonium phosphate fertilizer. The disc granulation method is characterized by comprising the following steps of a, crushing a magnesium ammonium phosphate material until the granularity of the crushed material is 0.1-1mm and adding an acidifying agent which accounts for 0.5%-10% of the total weight of the magnesium ammonium phosphate material; b, adding a starting material which accounts for 2%-10% of the amount of stable material in a stable granulation process in a disc granulator, starting to add a binder solution; and after all materials are converted into 0.5-2mm granules, continuously adding the material and the binder solution and entering in the continuous and stable granulation process, c, drying the granular magnesium ammonium phosphate material for 10-30 minutes at 60-100 DEG C; and d, sieving the dried material, wherein 2-4mm magnesium ammonium phosphate granules are qualified products and the other granules return back to the step a. The disc granulation method disclosed by the invention, compared with the prior art, is simple in granulation method and the fertilizing efficiency of magnesium ammonium phosphate is improved; in addition, by introducing the acidifying agent, the initial and subsequent nutrient release rates of magnesium ammonium phosphate can be adjusted as required.
Description
Technical field
The present invention relates to a kind of disc granulation method of particle magnesium ammonium phosphate slow-release fertilizer, belong to the manufacturing technology field of fertilizer.
Background technology
First, conventionally sell with powdery form and use by magnesium ammonium phosphate slow-release fertilizer phosphorous, nitrogenous, that contain the waste water reclamation such as magnesium.In the use procedure of powdered acid ammonium magnesium, dust is large, but also have cannot machine fertilising, cannot with the problem such as other fertilizer blending.It is not high that this causes the magnesium ammonium phosphate of recovery to be worth, and even becomes the burden of wastewater reclamation plant because find no market.The granulation of powdered acid ammonium magnesium is conducive to improve value of the product, sells the processing cost of granulation magnesium ammonium phosphate to fill up phosphorous, nitrogenous, to contain the waste water such as magnesium, promotes the recovery of the elements such as phosphorus, nitrogen, magnesium, realizes the object turning waste into wealth.
Secondly, magnesium ammonium phosphate is a kind of slow release fertilizer, and it is insoluble in water, so can not burn root.And even if rain in torrents, magnesium ammonium phosphate also can not outflow with water as traditional processable nitrogenous fertilizer, phosphate fertilizer.This loss not only significant wastage fertilizer, and run off nitrogen phosphoric caused widespread pollution from the overuse of fertilizers and pesticides in rural area, be the arch-criminal who causes a lot of freshwater lake eutrophication.On the other hand, magnesium ammonium phosphate can slowly be dissolved by the organic acid of plant root exudation (citric acid, matrimony vine acid, oxalic acid etc.).When plant is in vegetative growth phase and reproductive stage, root system is secreted organic acid in a large number, and secrete less other period.And plant is mainly also to nourish and grow and two stages of reproductive growth when needing fertilizer in a large number.Comprehensive above 2 known, after magnesium ammonium phosphate single-dose application, nutrient seldom runs off, and can provide the time of infertility from germinateing to yielding positive results required nitrogen, phosphorus, magnesium nutrient for crop.Finally, between 3-8 month, but may there is the problem of fertilizer deficiency in the fertilizer efficiency of magnesium ammonium phosphate to the larger crop of fertilizer requirement.
Summary of the invention
For the deficiencies in the prior art, the object of the invention is a kind of disc granulation method for particle magnesium ammonium phosphate slow-release fertilizer is provided.Bonding rate when the method makes granulation by spraying into binder solution improves.
Realizing object of the present invention can be by taking following technical scheme to reach:
A disc granulation method for particle magnesium ammonium phosphate slow-release fertilizer, is characterized in that comprising the steps:
A, broken magnesium ammonium phosphate material, make the raw meal particle size 0.1-1mm after fragmentation;
B, in granulating disc, add after initial material, start to add binder solution, after whole material conversions are 0.5-2mm particle, constantly add material and binder solution, enter lasting stable granulation process, the initial inventory in granulating disc is to stablize the 2%-10% of the stable inventory in granulation process; Binder solution addition accounts for the 2%-20% of material gross weight;
C, to particulate state phosphoric acid ammonium magnesium material at 60-100 DEG C, carry out 10-30 minute dry;
D, material drying is sieved, 2-4mm particle magnesium ammonium phosphate is qualified product, and the material that is less than 2mm and is greater than 4mm returns to step a.
Realizing one embodiment of the present invention is, described magnesium ammonium phosphate is six water magnesium ammonium phosphates or a water magnesium ammonium phosphate.
Realizing one embodiment of the present invention is, in step a, and described magnesium ammonium phosphate material moisture 2-5%.
Realizing one embodiment of the present invention is, in step a, adds the souring agent of the 0.5%-10% that accounts for magnesium ammonium phosphate material gross weight, and described souring agent is ground into 30-50 order in advance; Described souring agent is that one or two or more kinds in gypsum, sulphur, ammonium sulfate, ammonium chloride, brown coal, gibberic acid, citric acid, Sodium Pyrosulfite, oxysuccinic acid, oxalic acid, succsinic acid, acetic acid, butyric acid, formic acid, valeric acid, lactic acid, pyruvic acid, propanedioic acid, tetronic acid, fumaric acid, amino acid is by the mixture of any ratio.
Realizing one embodiment of the present invention is, in step b, in granulating disc, the moisture content of material is 5-15%;
Realizing one embodiment of the present invention is, in step b, and the each components based on weight percentage of binding agent, Binder Composition is Mierocrystalline cellulose 1%-18%, water glass 70%-95%, polyacrylamide 4%-12%.
Realizing one embodiment of the present invention is, in step b, binder solution is the aqueous solution, and mass percentage concentration is 0.05%-5%.
Realizing one embodiment of the present invention is, in step c, adopt the mode that revolving drum is dried to dry particulate state phosphoric acid ammonium magnesium material, hot blast inlet temperature is controlled at 60-100 DEG C, tail gas temperature out is controlled at 40-50 DEG C, the moisture 0.5-2.0% of material after drying.
Realizing one embodiment of the present invention is, becomes 30-65 ° of angle at the disk of described granulating disc with horizontal plane.
Realizing one embodiment of the present invention is, at the disc rotation speed 40-80r/min of described granulating disc.
Beneficial effect of the present invention is:
The present invention is by being transported to powdered acid ammonium magnesium in granulating disc; when granulating disc rolls granulation; by infusion pump, binder solution is sprayed onto in granulating disc, material is sticked into spherical along with the continuous rolling of tablets press, finally obtain magnesium ammonium phosphate particle.Technique is simple, with low cost.
For realizing the smooth blending of particle magnesium ammonium phosphate and other granulated fertilizers, with reference to bulk blended fertilizer national standard (GB21633-2008), the method fixes on the diameter of particle magnesium ammonium phosphate qualified product between 2-4mm.
In order to improve the nutrient release rate of magnesium ammonium phosphate, can add a certain amount of souring agent, taking small molecules amount organic acid as good, the acidic fertiliziers such as ammonium sulfate take second place.Along with changes in demand, also there is respective change in the kind of souring agent and consumption.But it is low to nutrient demand concentration for this class of turf to work as granulation magnesium ammonium phosphate, and the long crop of required time, do not use souring agent to be fine yet.
In sum, compared with prior art, prilling process is easy for the technology of the present invention, has improved the fertilising efficiency of magnesium ammonium phosphate.On the other hand, introduced souring agent and can regulate according to demand the initial and follow-up nutrient release rate of magnesium ammonium phosphate.
Embodiment
Below, in conjunction with embodiment, the invention will be further described:
Embodiment 1:
The prilling process of the magnesium ammonium phosphate slow-release fertilizer described in the present embodiment, carries out according to the following steps:
A, by broken magnesium ammonium phosphate material and sieve, make the raw meal particle size after fragmentation be less than 1mm;
B, at disk diameter 1m, in the granulating disc of rotating speed 50r/min, add after the broken good magnesium ammonium phosphate material of 1kg, start to spray with infusion pump the binder solution 40g that mass percentage concentration is 0.1%, the each composition of binding agent percentage meter by weight, described Binder Composition is 10% Mierocrystalline cellulose, 80% water glass, 10% polyacrylamide mixes, after 1kg material is all converted into 0.5-1mm particle, constantly add broken good magnesium ammonium phosphate material, magnesium ammonium phosphate weight of material by adding: binder solution weight=100:4 of 0.1% of sprinkling sprays binder solution, until weight of material approximates 20kg and starts discharging in disk, in maintenance disk, weight of material is always in 20kg left and right, inlet amount and load equate, enter lasting stable granulation process,
C, particulate state phosphoric acid ammonium magnesium material is out dried, bake out temperature is 60 °, and tail gas temperature out is controlled at 40 DEG C,, drying time is 20 minutes;
D, material drying is sieved, be less than the material of 2mm and be greater than the material of 4mm again broken as returning charge, the particle magnesium ammonium phosphate of 2-4mm is qualified product.
This product is suitable for turf, flowers and other crops.
Embodiment 2:
The difference of the present embodiment and specific embodiment 1 is:
In step a, add account for magnesium ammonium phosphate material gross weight 5% be ground in advance 30 object sulphur and 1% be ground in advance 50 object citric acids.
Other are identical with specific embodiment 1.
This product is applicable to potato, green onion garlic class has the crops such as vegetables, tobacco, beet, tea, rape and the cabbage Cruciferae of volatile flavor.
Embodiment 3:
The difference of the present embodiment and specific embodiment 1 is:
One, in step a, add account for magnesium ammonium phosphate material gross weight 9% be ground in advance 30 order gypsum and 0.25% be ground in advance 50 order formic acid;
Two, in step b, the binder solution 200g that sprinkling mass percentage concentration is 0.05%, the each composition of binding agent percentage meter by weight, described Binder Composition is that 1% Mierocrystalline cellulose, 95% water glass, 4% polyacrylamide mix, after 1kg material is all converted into 0.5-1mm particle, constantly add broken good magnesium ammonium phosphate material, the magnesium ammonium phosphate material by adding: 0.05% binder solution amount of sprinkling is 100:20;
Three, in step c, adopt the mode that revolving drum is dried to dry particulate state phosphoric acid ammonium magnesium material to particulate state phosphoric acid ammonium magnesium material out, hot blast inlet temperature is controlled at 100 DEG C, and tail gas temperature out is controlled at 50 DEG C, and drying time is 10 minutes.
Other identical with specific embodiment 1.
This product is applicable to potato, green onion garlic class has the crops such as vegetables, tobacco, beet, tea, rape and the cabbage Cruciferae of volatile flavor.
Embodiment 4:
The difference of the present embodiment and specific embodiment 1 is:
One, in step a, add and account for 5% glycine of magnesium ammonium phosphate material gross weight and 5% oxysuccinic acid, and be ground in advance 40 orders;
Two, in step b, the binder solution 20g that sprinkling mass percentage concentration is 5%, the each composition of binding agent percentage meter by weight, described Binder Composition is that 18% Mierocrystalline cellulose, 70% water glass, 12% polyacrylamide mix, after 1kg material is all converted into 0.5-1mm particle, constantly add broken good magnesium ammonium phosphate material, the magnesium ammonium phosphate material by adding: 10% binder solution amount of sprinkling is 100:2;
Three, in step c, adopt the mode that revolving drum is dried to dry particulate state phosphoric acid ammonium magnesium material to particulate state phosphoric acid ammonium magnesium material out, hot blast inlet temperature is controlled at 80 DEG C, and tail gas temperature out is controlled at 45 DEG C, and drying time is 20 minutes.
Other identical with specific embodiment 1.
This product is applicable to the crops such as apple, pear tree.
Claims (10)
1. a disc granulation method for particle magnesium ammonium phosphate slow-release fertilizer, is characterized in that comprising the steps:
A, broken magnesium ammonium phosphate material, make the raw meal particle size 0.1-1mm after fragmentation;
B, in granulating disc, add after initial material, start to add binder solution, after whole material conversions are 0.5-2mm particle, constantly add material and binder solution, enter lasting stable granulation process, the initial inventory in granulating disc is to stablize the 2%-10% of the stable inventory in granulation process; Binder solution addition accounts for the 2%-20% of material gross weight;
C, to particulate state phosphoric acid ammonium magnesium material at 60-100 DEG C, carry out 10-30 minute dry;
D, material drying is sieved, 2-4mm particle magnesium ammonium phosphate is qualified product, and the material that is less than 2mm and is greater than 4mm returns to step a.
2. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, is characterized in that: described magnesium ammonium phosphate is six water magnesium ammonium phosphates or a water magnesium ammonium phosphate.
3. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, is characterized in that: in step a, and described magnesium ammonium phosphate material moisture 2-5%.
4. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, is characterized in that: in step a, add the souring agent of the 0.5%-10% that accounts for magnesium ammonium phosphate material gross weight, described souring agent is ground into 30-50 order in advance; Described souring agent is that one or two or more kinds in gypsum, sulphur, ammonium sulfate, ammonium chloride, brown coal, gibberic acid, citric acid, Sodium Pyrosulfite, oxysuccinic acid, oxalic acid, succsinic acid, acetic acid, butyric acid, formic acid, valeric acid, lactic acid, pyruvic acid, propanedioic acid, tetronic acid, fumaric acid, amino acid is by the mixture of any ratio.
5. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, is characterized in that: in step b, in granulating disc, the moisture content of material is 5-15%.
6. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, it is characterized in that: in step b, the each components based on weight percentage of binding agent, Binder Composition is Mierocrystalline cellulose 1%-18%, water glass 70%-95%, polyacrylamide 4%-12%.
7. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, is characterized in that: in step b, binder solution is the aqueous solution, and mass percentage concentration is 0.05%-5%.
8. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, it is characterized in that: in step c, adopt the mode that revolving drum is dried to dry particulate state phosphoric acid ammonium magnesium material, hot blast inlet temperature is controlled at 60-100 DEG C, tail gas temperature out is controlled at 40-50 DEG C, the moisture 0.5-2.0% of material after drying.
9. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, is characterized in that: the disk of described granulating disc becomes 30-65 ° of angle with horizontal plane.
10. the disc granulation method of a kind of particle magnesium ammonium phosphate slow-release fertilizer according to claim 1, is characterized in that: the disc rotation speed 40-80r/min of described granulating disc.
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| CN201410335799.XA CN104150970B (en) | 2014-07-15 | 2014-07-15 | A kind of disc granulation method of particle ammonium magnesium phosphate slow-release fertilizer |
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| CN201410335799.XA CN104150970B (en) | 2014-07-15 | 2014-07-15 | A kind of disc granulation method of particle ammonium magnesium phosphate slow-release fertilizer |
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| CN104150970B CN104150970B (en) | 2017-07-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495811A (en) * | 2016-11-15 | 2017-03-15 | 天津水泥工业设计研究院有限公司 | A kind of rounded grain mineral fertilizer prilling and device |
| CN108409465A (en) * | 2018-05-30 | 2018-08-17 | 景德镇陶瓷大学 | A kind of ammonium magnesium phosphate-phosphorus fertilizer slow release fertilizer and preparation method thereof |
| CN108467309A (en) * | 2018-05-30 | 2018-08-31 | 景德镇陶瓷大学 | A kind of ammonium magnesium phosphate-slow-release fertilizer of carbamide and preparation method thereof |
| CN108658662A (en) * | 2018-05-30 | 2018-10-16 | 景德镇陶瓷大学 | A kind of cementing fertilizer of ammonium magnesium phosphate inorganic-organic and preparation method thereof |
| CN115253880A (en) * | 2022-08-26 | 2022-11-01 | 珠海市清创智慧海绵技术研究院有限公司 | Manufacturing process and preparation device of granular bioretention facility growth medium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495811A (en) * | 2016-11-15 | 2017-03-15 | 天津水泥工业设计研究院有限公司 | A kind of rounded grain mineral fertilizer prilling and device |
| CN108409465A (en) * | 2018-05-30 | 2018-08-17 | 景德镇陶瓷大学 | A kind of ammonium magnesium phosphate-phosphorus fertilizer slow release fertilizer and preparation method thereof |
| CN108467309A (en) * | 2018-05-30 | 2018-08-31 | 景德镇陶瓷大学 | A kind of ammonium magnesium phosphate-slow-release fertilizer of carbamide and preparation method thereof |
| CN108658662A (en) * | 2018-05-30 | 2018-10-16 | 景德镇陶瓷大学 | A kind of cementing fertilizer of ammonium magnesium phosphate inorganic-organic and preparation method thereof |
| CN115253880A (en) * | 2022-08-26 | 2022-11-01 | 珠海市清创智慧海绵技术研究院有限公司 | Manufacturing process and preparation device of granular bioretention facility growth medium |
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