CN105237295A - Special humic acid chelated slow-release fertilizer for wheat and preparation method thereof - Google Patents
Special humic acid chelated slow-release fertilizer for wheat and preparation method thereof Download PDFInfo
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- CN105237295A CN105237295A CN201510611213.2A CN201510611213A CN105237295A CN 105237295 A CN105237295 A CN 105237295A CN 201510611213 A CN201510611213 A CN 201510611213A CN 105237295 A CN105237295 A CN 105237295A
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 41
- 239000004021 humic acid Substances 0.000 title claims abstract description 40
- 241000209140 Triticum Species 0.000 title claims abstract description 21
- 235000021307 Triticum Nutrition 0.000 title claims abstract description 21
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000005469 granulation Methods 0.000 claims abstract description 22
- 230000003179 granulation Effects 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000011573 trace mineral Substances 0.000 claims abstract description 18
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000011268 mixed slurry Substances 0.000 claims abstract description 14
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 12
- 239000008187 granular material Substances 0.000 claims abstract description 12
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 10
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 9
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims abstract description 9
- 229910021538 borax Inorganic materials 0.000 claims abstract description 9
- 239000004202 carbamide Substances 0.000 claims abstract description 9
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 9
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 9
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims abstract description 9
- 235000019837 monoammonium phosphate Nutrition 0.000 claims abstract description 9
- 239000006012 monoammonium phosphate Substances 0.000 claims abstract description 9
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 9
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000007791 liquid phase Substances 0.000 claims abstract description 5
- 235000015097 nutrients Nutrition 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000005864 Sulphur Substances 0.000 claims description 7
- 229910052796 boron Inorganic materials 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- DWNBOPVKNPVNQG-LURJTMIESA-N (2s)-4-hydroxy-2-(propylamino)butanoic acid Chemical compound CCCN[C@H](C(O)=O)CCO DWNBOPVKNPVNQG-LURJTMIESA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 13
- 150000001875 compounds Chemical class 0.000 abstract description 5
- 239000002609 medium Substances 0.000 abstract 2
- 239000011259 mixed solution Substances 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 235000013877 carbamide Nutrition 0.000 abstract 1
- 230000004720 fertilization Effects 0.000 abstract 1
- 229940099596 manganese sulfate Drugs 0.000 abstract 1
- 235000007079 manganese sulphate Nutrition 0.000 abstract 1
- 239000011702 manganese sulphate Substances 0.000 abstract 1
- 230000020477 pH reduction Effects 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000007320 rich medium Substances 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 230000006872 improvement Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000013522 chelant Substances 0.000 description 4
- 238000010410 dusting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 210000003608 fece Anatomy 0.000 description 3
- 230000035558 fertility Effects 0.000 description 3
- 239000010871 livestock manure Substances 0.000 description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 231100000739 chronic poisoning Toxicity 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000013278 single fertilization Effects 0.000 description 1
- 239000004016 soil organic matter Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The invention discloses a special humic acid chelated slow-release fertilizer for wheat and a preparation method thereof. The fertilizer is prepared by adding humic acid, urea, monoammonium phosphate, potassium chloride, liquid ammonia, concentrated sulfuric acid and medium trace elements in batching. The preparation method comprises the following steps: mixing the humic acid, copper sulfate, manganese sulfate, borax and sulfuric acid with water by using equipment for producing a compound fertilizer through an ammonia-acid process so as to obtain a mixed solution, allowing the mixed solution and the liquid ammonia to accomplish acidification of humic acid and chelating of the medium trace elements in a tubular reactor, and with obtained mixed slurry as a liquid phase volume needed for granulation, completing material granulation. According to the invention, a slow release function is obtained by utilizing liquid sodium silicate to coat fertilizer granules, so, and needs in the whole growth period of the wheat can be guaranteed through one-shot fertilization; the nutrient composition, the rich medium trace elements and organic matters of the fertilizer better meet the growth needs of wheat; and the fertilizer is capable of promoting synergy of the fertilizer, improving and remediating soil and increasing the yield and quality of crops.
Description
Technical field
The invention belongs to technical field of fertilizers, be specifically related to a kind of humic acid chelating slowly-releasing Special fertilizer for wheat and preparation method thereof.
Background technology
" crops YIZHIHUA, complete in fertile main ", for many years generally use of chemical fertilizer in China's agriculture production is agricultural development, increasing peasant income and rural area prosperity have made tremendous contribution.But use chemical fertilizer in a large number for a long time, also cause soil salt content too high, harmful ion concentration is excessive, and structural difference, easily hardens, and in soil, fertility is unbalanced, fertility declines, and crop growth is restricted.Show according to data, China's soil pollution is day by day serious, saline-alkali soil rapid development.Improve soil, preserving the ecological environment causes the great attention of the Chinese government, therefore China proposes and realizes the year two thousand twenty chemical fertilizer zero growth rate, and improvement 1.5 hundred million mu, soil, promotes the target of soil organic matter content.
In addition, along with environmental pollution increases the weight of, the heavy metal contamination of soil also becomes a problem demanding prompt solution.If the heavy metal in soil can not effectively be processed, absorbed by crops, accumulate in vivo, after its product gathered in the crops is eaten, must chronic poisoning be produced, grievous injury human health.
Summary of the invention
The object of this invention is to provide a kind of humic acid chelating slowly-releasing Special fertilizer for wheat and preparation method thereof, by carrying out high temperature acidified process to humic acids, improving the quantity of active function group, improving the effect of humic acids.Utilize the heavy metal in humic acid chelating soil to generate precipitation, suppress the absorption of crop heavy metal.To reach improvement soil, improve the effect of crop quality.
Another object of the present invention utilizes liquid sodium silicate to carry out fertiliser granulates coating, and the product made has had good sustained release effect, the advantage that cost is low.
A further object of the present invention is that product nutrient is comprehensive, containing organic matter, sulphur, copper, manganese, silicon, boron medium trace element, also containing N P and K macroelement, meets the needs of single fertilization, reduces cost of labor.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of humic acids accounts for total mass percent 8%-10% dropping into material quantity, urea accounts for total mass percent 13%-17% dropping into material quantity, monoammonium phosphate accounts for total mass percent 37%-45% dropping into material quantity, Repone K accounts for total mass percent 17%-20% dropping into material quantity, liquefied ammonia accounts for total mass percent 5%-6% dropping into material quantity, copper sulfate accounts for total mass percent 1% dropping into material quantity, manganous sulfate accounts for total mass percent 1% dropping into material quantity, borax accounts for total mass percent 1.5% dropping into material quantity, liquid sodium silicate accounts for total mass percent 4%-6% dropping into material quantity, the vitriol oil accounts for total mass percent 4%-5% dropping into material quantity.
By mass percentage, described the finished product N P and K total nutrient Han Liang≤48%, You machine matter Han Liang≤5%, and containing sulphur, copper, manganese, silicon, the boron medium trace element needed for wheat growth.
The preparation method of described humic acid chelating slowly-releasing Special fertilizer for wheat, comprises the following steps:
(1) in sour method composite heat transfer, humic acids through measuring, copper sulfate, manganous sulfate, borax, sulfuric acid and water are joined in the retort of sealing in proportion, heated and stirred 10-15 minute, makes the mixing solutions of temperature 60-80 DEG C, concentration 70%-80%, for subsequent use;
(2) liquefied ammonia is joined tubular reactor, mix at tubular reactor with the mixing solutions prepared from step (1), make mixed slurry, the a large amount of reaction heat utilizing propylhomoserin to react complete the acidifying of humic acids and the chelating of humic acids and medium trace element, medium trace element chelating operation is combined with sour method compound manure production technique, decrease chelating equipment, simplify chelate products preparation flow;
(3) by Microcomputer Burden System, the urea through measuring, monoammonium phosphate and Repone K are added rotary drum granulator, in rotary drum granulator, granulation process is completed with the mixed slurry prepared from step (2), utilize mixed slurry as amount of liquid phase needed for granulating in granulation process, its heat is utilized to carry out heated material, in rotary drum granulator, temperature of charge controls at 70-80 DEG C, granulation time 5 ~ 8min;
(4) apart from rotary drum granulator outlet 0.5m-0.7m place, through nozzle specially used, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate, carry out coating.Utilize its viscosity and solidify rear specific area large, can block capillary porosity duct, the feature improving density of material and intensity forms film body on fertiliser granulates surface, by wrapping up layer by layer, in a fertiliser granulates, forms multi-layered film body;
(5) after granulation through drying, cooling, sieve, be packaged to be humic acid chelating slowly-releasing Special fertilizer for wheat.
Humic acid chelating slowly-releasing Special fertilizer for wheat of the present invention and preparation method thereof compared with prior art has the following advantages:
1, product comprehensive nutrition, nutrient content is high, not only containing N P and K macroelement, also containing a large amount of sulphur, copper, manganese, silicon, boron medium trace element and organic matter.Product has active high, promotes fertilizer synergistic, promotes soil fertility, and improvement soil physico-chemical property, improves crop quality and output, strengthens the effect of crop disease-resistant ability.
2, medium trace element chelating operation combines with sour method compound manure production technique, eliminates the preparation of chelate products, concentrated, drying and other steps, has simplified preparation flow.Chelate products, as the direct granulation of granulating amount of liquid phase, in turn saves a large amount of steam, decreases energy consumption.
3, utilize liquid sodium silicate to carry out fertilizer coating, liquid sodium silicate agriculturally can manufacture silicon element fertilizer material, and film body, compared with other film body adopting macromolecular material to make, in degraded in soil, can not can pollute edatope.
4, product of the present invention can utilize existing sour method compound fertilizer producing equipment to make, and only needs to increase simple utility appliance, reduces the investment of special coated equipment.
Accompanying drawing explanation
Fig. 1 is humic acid chelating slowly-releasing Special fertilizer for wheat of the present invention and preparation method thereof schema.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in Figure 1: humic acid chelating slowly-releasing Special fertilizer for wheat of the present invention, humic acids accounts for total mass percent 8%-10% dropping into material quantity, urea accounts for total mass percent 13%-17% dropping into material quantity, monoammonium phosphate accounts for total mass percent 37%-45% dropping into material quantity, Repone K accounts for total mass percent 17%-20% dropping into material quantity, liquefied ammonia accounts for total mass percent 5%-6% dropping into material quantity, copper sulfate accounts for total mass percent 1% dropping into material quantity, manganous sulfate accounts for total mass percent 1% dropping into material quantity, borax accounts for total mass percent 1.5% dropping into material quantity, liquid sodium silicate accounts for total mass percent 4%-6% dropping into material quantity, the vitriol oil accounts for total mass percent 4%-5% dropping into material quantity.
By mass percentage, described the finished product N P and K total nutrient Han Liang≤48%, You machine matter Han Liang≤5%, and containing sulphur, copper, manganese, silicon, the boron medium trace element needed for wheat growth.
The preparation method of described humic acid chelating slowly-releasing Special fertilizer for wheat, comprises the following steps:
(1) in sour method composite heat transfer, humic acids through measuring, copper sulfate, manganous sulfate, borax, sulfuric acid and water are joined in the retort of sealing in proportion, heated and stirred 10-15 minute, makes the mixing solutions of temperature 60-80 DEG C, concentration 70%-80%, for subsequent use;
(2) liquefied ammonia is joined tubular reactor, mix at tubular reactor with the mixing solutions prepared from step (1), make mixed slurry, the a large amount of reaction heat utilizing propylhomoserin to react complete the acidifying of humic acids and the chelating of humic acids and medium trace element, medium trace element chelating operation is combined with sour method compound manure production technique, decrease chelating equipment, simplify chelate products preparation flow;
(3) by Microcomputer Burden System, the urea through measuring, monoammonium phosphate and Repone K are added rotary drum granulator, in rotary drum granulator, granulation process is completed with the mixed slurry prepared from step (2), utilize mixed slurry as amount of liquid phase needed for granulating in granulation process, its heat is utilized to carry out heated material, in rotary drum granulator, temperature of charge controls at 70-80 DEG C, granulation time 5 ~ 8min;
(4) apart from rotary drum granulator outlet 0.5m-0.7m place, through nozzle specially used, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate, carry out coating.Utilize its viscosity and solidify rear specific area large, can block capillary porosity duct, the feature improving density of material and intensity forms film body on fertiliser granulates surface, by wrapping up layer by layer, in a fertiliser granulates, forms multi-layered film body;
(5) after granulation through drying, cooling, sieve, be packaged to be humic acid chelating slowly-releasing Special fertilizer for wheat.
Below by example, the invention will be further elaborated:
Embodiment 1:16-20-12 product
1, by humic acids (mass percent, lower same, containing organic 65%) 80 kilograms, 10 kilograms, copper sulfate (sulfur-bearing, copper), manganous sulfate 10 kilograms (sulfur-bearing, manganese element), concentration is the vitriol oil (containing element sulphur) 40 kilograms of 98%, borax (containing boron) 15 kilograms, in retort, make mass percentage concentration with 116 kg of water is 75%, the mixing solutions that temperature is 80 DEG C, heated and stirred 15 minutes, for subsequent use;
2, by liquid nitrogen 50 kilograms, join tubular reactor after metering, the mixing solutions prepared with step 1 is driven into tubular reactor with pump after metering and makes mixed slurry, utilizes propylhomoserin reaction heat to complete the acidifying of humic acids and the chelating of humic acids and medium trace element;
3, add 165 kilograms, urea (containing N46.2%) through computer metering, powdery monoammonium phosphate is (containing N12%, P
2o
553%) 380 kilograms, 200 kilograms, Repone K (containing K2O60%), above-mentioned material mixes in rotary drum granulator with the mixed slurry from step 2, after 7min granulation, 0.5m-0.7m place is being exported apart from rotary drum granulator, through nozzle specially used, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate (containing element silicon) 50 kilograms, carry out coating;
5, material enters dryer, dry 35min, drying machine Outlet Gas Temperature is 55 DEG C, and respectively through the screening of sieve diameter 2.0mm dusting cover and sieve diameter 4.5mm scalping screening after drying, the pulverulent material after dusting cover returns rotary drum granulator with the macrobead after scalping together with fragmentation;
6, salable product enter cooler, pack after cooling, obtained qualified product.Product is 16.3%-20.1%-12.0% containing N-P2O5-K2O, and containing organic 5.20% and medium trace element, granularity 2-4.5mm is 98%, moisture content 1.9%.
Embodiment 2:15-23-10 product
1, by humic acids (mass percent, lower same, containing organic 65%) 90 kilograms, 10 kilograms, copper sulfate (sulfur-bearing, copper), manganous sulfate 10 kilograms (sulfur-bearing, manganese element), concentration is the vitriol oil (containing element sulphur) 40 kilograms of 98%, borax (containing boron) 15 kilograms, in retort, make mass percentage concentration with 123.5 kg of water is 75%, the mixing solutions that temperature is 80 DEG C, heated and stirred 15 minutes, for subsequent use;
2, by liquid nitrogen 50 kilograms, join tubular reactor after metering, the mixing solutions prepared with step 1 is driven into tubular reactor with pump after metering and makes mixed slurry, utilizes propylhomoserin reaction heat to complete the acidifying of humic acids and the chelating of humic acids and medium trace element;
3, add 130 kilograms, urea (containing N46.2%) through computer metering, powdery monoammonium phosphate is (containing N12%, P
2o
553%) 435 kilograms, 170 kilograms, Repone K (containing K2O60%), above-mentioned material mixes in rotary drum granulator with the mixed slurry from step 2, after 7min granulation, 0.5m-0.7m place is being exported apart from rotary drum granulator, through nozzle specially used, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate (containing element silicon) 50 kilograms, carry out coating;
5, material enters dryer, dry 35min, drying machine Outlet Gas Temperature is 55 DEG C, and respectively through the screening of sieve diameter 2.0mm dusting cover and sieve diameter 4.5mm scalping screening after drying, the pulverulent material after dusting cover returns rotary drum granulator with the macrobead after scalping together with fragmentation;
6, salable product enter cooler, pack after cooling, obtained qualified product.Product is 15.3%-23.1%-10.2% containing N-P2O5-K2O, and containing organic 5.85% and medium trace element, granularity 2-4.5mm is 97%, moisture content 1.8%.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a humic acid chelating slowly-releasing Special fertilizer for wheat, it is characterized in that, humic acids accounts for total mass percent 8%-10% dropping into material quantity, urea accounts for total mass percent 13%-17% dropping into material quantity, monoammonium phosphate accounts for total mass percent 37%-45% dropping into material quantity, Repone K accounts for total mass percent 17%-20% dropping into material quantity, liquefied ammonia accounts for total mass percent 5%-6% dropping into material quantity, copper sulfate accounts for total mass percent 1% dropping into material quantity, manganous sulfate accounts for total mass percent 1% dropping into material quantity, borax accounts for total mass percent 1.5% dropping into material quantity, liquid sodium silicate accounts for total mass percent 4%-6% dropping into material quantity, the vitriol oil accounts for total mass percent 4%-5% dropping into material quantity.
2. humic acid chelating slowly-releasing Special fertilizer for wheat according to claim 1, it is characterized in that, by mass percentage, the finished product N P and K total nutrient Han Liang≤48%, You machine matter Han Liang≤5%, and containing sulphur, copper, manganese, silicon, the boron medium trace element needed for wheat growth.
3. the preparation method of humic acid chelating slowly-releasing Special fertilizer for wheat as claimed in claim 1, is characterized in that, comprise the following steps:
(1) in sour method composite heat transfer, humic acids through measuring, copper sulfate, manganous sulfate, borax, sulfuric acid and water are joined in the retort of sealing in proportion, heated and stirred 10-15 minutes, makes the mixing solutions of temperature 60-80 DEG C, concentration 70%-80%, for subsequent use;
(2) liquefied ammonia is joined tubular reactor, mix at tubular reactor with the mixing solutions prepared from step (1), make mixed slurry, a large amount of reaction heat utilizing propylhomoserin to react complete the acidifying of humic acids and the chelating of humic acids and medium trace element;
(3) by Microcomputer Burden System, the urea through measuring, monoammonium phosphate and Repone K are added rotary drum granulator, in rotary drum granulator, granulation process is completed with the mixed slurry prepared from step (2), utilize mixed slurry as amount of liquid phase needed for granulating in granulation process, its heat is utilized to carry out heated material, in rotary drum granulator, temperature of charge controls at 70-80 DEG C, granulation time 5 ~ 8min;
(4) apart from rotary drum granulator outlet 0.5m-0.7m place, through shower nozzle, be sprayed onto the fertiliser granulates after granulation on the surface after being atomized by liquid sodium silicate, carry out coating, by wrapping up layer by layer, in a fertiliser granulates, forming multi-layered film body;
(5) after granulation through drying, cooling, sieve, be packaged to be humic acid chelating slowly-releasing Special fertilizer for wheat.
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| CN105949010A (en) * | 2016-07-14 | 2016-09-21 | 天津芦阳化肥股份有限公司 | Compound fertilizer special for high-activity multi-element wheat and preparation method thereof |
| CN108218566A (en) * | 2017-12-29 | 2018-06-29 | 广东拉多美化肥有限公司 | A kind of preparation method of rotary drum humic acid Si composite fertilizer and humic acid Si composite fertilizer |
| CN108314525A (en) * | 2018-03-14 | 2018-07-24 | 湖北祥云(集团)化工股份有限公司 | A kind of microorganism sustained slow-release fertilizer and preparation method thereof for wheat |
| CN108794260A (en) * | 2018-06-29 | 2018-11-13 | 陕西省蒲城绿桥农化有限责任公司 | A method of fulvic acid chelated iron fertilizer is prepared using solid-phase grinding technology |
| CN111039716A (en) * | 2019-12-26 | 2020-04-21 | 中化农业（临沂）研发中心有限公司 | Synergistic compound fertilizer special for wheat and preparation method thereof |
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| CN111039716A (en) * | 2019-12-26 | 2020-04-21 | 中化农业（临沂）研发中心有限公司 | Synergistic compound fertilizer special for wheat and preparation method thereof |
| CN111253196A (en) * | 2020-02-04 | 2020-06-09 | 中化农业（临沂）研发中心有限公司 | Humic acid chelated medium-trace element fertilizer and preparation method thereof |
| CN114181021A (en) * | 2021-12-23 | 2022-03-15 | 安徽辉隆集团五禾生态肥业有限公司 | Potassium fulvate type compound fertilizer containing medium and trace metal elements and preparation process thereof |
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