CN116969802A - Instant granular iron fertilizer and preparation method thereof - Google Patents
Instant granular iron fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN116969802A CN116969802A CN202310930412.4A CN202310930412A CN116969802A CN 116969802 A CN116969802 A CN 116969802A CN 202310930412 A CN202310930412 A CN 202310930412A CN 116969802 A CN116969802 A CN 116969802A
- Authority
- CN
- China
- Prior art keywords
- iron
- fertilizer
- iron fertilizer
- stirring
- instant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 254
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 127
- 239000003337 fertilizer Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000011591 potassium Substances 0.000 claims abstract description 27
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 27
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 24
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 24
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 24
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 24
- PZZHMLOHNYWKIK-UHFFFAOYSA-N eddha Chemical compound C=1C=CC=C(O)C=1C(C(=O)O)NCCNC(C(O)=O)C1=CC=CC=C1O PZZHMLOHNYWKIK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 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 claims abstract description 12
- 239000013522 chelant Substances 0.000 claims abstract description 12
- 239000004021 humic acid Substances 0.000 claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 11
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 8
- JVXHQHGWBAHSSF-UHFFFAOYSA-L 2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate;hydron;iron(2+) Chemical compound [H+].[H+].[Fe+2].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O JVXHQHGWBAHSSF-UHFFFAOYSA-L 0.000 claims abstract description 3
- QPCDCPDFJACHGM-UHFFFAOYSA-N N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(=O)O)CCN(CC(O)=O)CC(O)=O QPCDCPDFJACHGM-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229920001661 Chitosan Polymers 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000003756 stirring Methods 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 24
- 239000002738 chelating agent Substances 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 19
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 16
- 239000000440 bentonite Substances 0.000 claims description 15
- 229910000278 bentonite Inorganic materials 0.000 claims description 15
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 15
- 239000012798 spherical particle Substances 0.000 claims description 15
- 230000003179 granulation Effects 0.000 claims description 14
- 238000005469 granulation Methods 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 12
- 239000005648 plant growth regulator Substances 0.000 claims description 12
- FQUDPIIGGVBZEQ-UHFFFAOYSA-N acetone thiosemicarbazone Chemical compound CC(C)=NNC(N)=S FQUDPIIGGVBZEQ-UHFFFAOYSA-N 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000000395 magnesium oxide Substances 0.000 claims description 10
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 10
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 10
- 229940118149 zinc sulfate monohydrate Drugs 0.000 claims description 10
- RNZCSKGULNFAMC-UHFFFAOYSA-L zinc;hydrogen sulfate;hydroxide Chemical group O.[Zn+2].[O-]S([O-])(=O)=O RNZCSKGULNFAMC-UHFFFAOYSA-L 0.000 claims description 10
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- SRVJKTDHMYAMHA-WUXMJOGZSA-N thioacetazone Chemical compound CC(=O)NC1=CC=C(\C=N\NC(N)=S)C=C1 SRVJKTDHMYAMHA-WUXMJOGZSA-N 0.000 claims description 8
- 239000011259 mixed solution Substances 0.000 claims description 7
- 230000002441 reversible effect Effects 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 2
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 2
- 239000001099 ammonium carbonate Substances 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 229960000892 attapulgite Drugs 0.000 claims description 2
- 239000001110 calcium chloride Substances 0.000 claims description 2
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052625 palygorskite Inorganic materials 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 27
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 14
- 238000010521 absorption reaction Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 239000011574 phosphorus Substances 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 206010020880 Hypertrophy Diseases 0.000 abstract 1
- SMQUZDBALVYZAC-UHFFFAOYSA-N salicylaldehyde Chemical compound OC1=CC=CC=C1C=O SMQUZDBALVYZAC-UHFFFAOYSA-N 0.000 description 16
- 238000012360 testing method Methods 0.000 description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 206010022971 Iron Deficiencies Diseases 0.000 description 8
- 201000010099 disease Diseases 0.000 description 7
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 6
- 241000219109 Citrullus Species 0.000 description 4
- 235000012828 Citrullus lanatus var citroides Nutrition 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 230000000536 complexating effect Effects 0.000 description 4
- 230000006196 deacetylation Effects 0.000 description 4
- 238000003381 deacetylation reaction Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 230000003020 moisturizing effect Effects 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 239000000376 reactant Substances 0.000 description 4
- 238000000967 suction filtration Methods 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- -1 i.e. Chemical compound 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 235000020774 essential nutrients Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001965 increasing effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- 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
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
-
- 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
-
- 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
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The application relates to the technical field of fertilizers, in particular to an instant granular iron fertilizer and a preparation method thereof, wherein the iron fertilizer comprises the following raw materials in percentage by mass: 25-40% of chelated iron, 40-60% of ferrous sulfate, 1-15% of humic acid and 5-20% of granulating additive; the chelate iron comprises one or more of EDTA iron, EDDHA iron, IDHA iron and DTPA iron. The iron fertilizer has uniform particles, excellent appearance, easy mechanical operation and good compound use performance with nitrogen, phosphorus and potassium fertilizers, can achieve the performance equivalent to that of the chelated iron fertilizer, but greatly reduces the cost compared with the hypertrophy of the chelated iron, and greatly improves the income of crops; the iron fertilizer has high absorption and utilization rate and excellent effect of absorbing heavy metals, and well improves the soil quality.
Description
Technical Field
The application relates to the technical field of fertilizers, in particular to an instant granular iron fertilizer and a preparation method thereof.
Background
Iron is an essential nutrient element for plants, and participates in various physiological actions such as chlorophyll synthesis, respiration, redox reaction, electron transfer and the like in the plants to influence various metabolism. The iron deficiency of crops can cause leaf yellowing, namely iron deficiency yellow leaf disease, and serious plant wilt and death can be caused, the iron deficiency yellow leaf disease is most easily generated in alkaline soil, and about one third of the iron deficiency yellow leaf disease belongs to the alkaline soil in the global scope, so the problem of iron deficiency yellow leaf disease is very needed to be solved.
At present, the solution to the iron deficiency yellow disease is mainly to apply iron fertilizer in soil and apply iron fertilizer to the leaf surfaces of crops, wherein the iron fertilizer is mainly divided into ferrous sulfate fertilizer and chelated iron fertilizer. The effect can only be achieved in a short time or locally when the iron fertilizer is sprayed on the leaf surface. When ferrous sulfate fertilizer is applied in soil, the ferrous sulfate fertilizer is easily oxidized into a very indissolvable ferric iron compound, and the utilization rate is low; the effect of the application of the chelated iron fertilizer to the soil is excellent, but the cost is high. The iron fertilizer in the market is mostly in powder form, is unfavorable for agricultural mechanized fertilization, and has the problem of low iron fertilizer absorptivity for alkaline soil. In addition, due to environmental pollution, heavy metals in a lot of soil exceed standard, so that the absorption and utilization rate of crops to iron fertilizer is reduced, and meanwhile, the crops planted in the soil containing the heavy metals also have certain safety problems.
Disclosure of Invention
Aiming at the problems, the application provides the instant granular iron fertilizer and the preparation method thereof, wherein the iron fertilizer has uniform granules, excellent appearance, easy mechanized operation and good compound use performance with nitrogen, phosphorus and potassium fertilizers, and can achieve the performance equivalent to that of the chelated iron fertilizer, but the cost is greatly reduced compared with that of the chelated iron fertilizer, and the income of crops is greatly improved; the iron fertilizer has high absorption and utilization rate, can well adsorb heavy metals, and improves soil quality.
In order to achieve the aim, the application provides an instant granular iron fertilizer which comprises the following raw materials in percentage by mass: 25-40% of chelated iron, 40-60% of ferrous sulfate, 1-15% of humic acid and 5-20% of granulating additive; the chelate iron comprises one or more of EDTA iron, EDDHA iron, IDHA iron and DTPA iron.
Preferably, the chelated iron comprises EDDHA iron and IDHA iron, and the mass ratio of the EDDHA iron to the IDHA iron is (3-6): 1.
the source of the EDDHA iron, namely ethylenediamine ortho-dihydroxyacetic acid iron, is not particularly limited, and the EDDHA iron can be obtained through commercial purchase, including but not limited to the EDDHA iron purchased from Jiangsu Miao biosciences, inc.
The source of the IDHA iron, i.e., iminodisuccinate sodium iron salt, is not particularly limited by the present application and is commercially available, including but not limited to, from Liaoning Ten.
For the fact that iron of many inorganic iron fertilizers is easy to be converted into indissolvable iron compounds in neutral or alkaline soil environment at present, the absorption rate is low, and the applicant finds that ferrous sulfate and chelated iron with specific proportions are adopted after a lot of researches, and particularly the chelated iron comprises the following components in mass ratio (3-6): the EDDHA iron and the IDHA iron of the formula 1 can enable the absorption and utilization rate of the prepared iron fertilizer in alkaline soil to be higher, which is probably due to the fact that on one hand, the addition of ferrous sulfate can improve the alkaline soil, and on the other hand, the absorption rate of the added chelate iron is extremely high, and the chelate iron can be converted into amino acid and nutrient elements in plants without residues; meanwhile, after the chelate iron and the ferrous sulfate are stirred and mixed in a forward and reverse manner for a certain time in the preparation process, the ferrous sulfate is adsorbed by the chelate group, so that the ferrous sulfate is not easy to oxidize, and the excellent bioavailability and absorptivity of the iron fertilizer are endowed, and the synergistic effect of the organic and inorganic aspects ensures that the iron fertilizer product of the application has stable performance, obvious soil improvement effect and high absorption and utilization rate.
In some embodiments, the humic acid comprises one or more of potassium fulvate, sodium humate, potassium humate.
Preferably, the humic acid comprises a combination of potassium fulvate and potassium humate, and the mass ratio is 1: (0.5-1.5).
More preferably, the humic acid comprises a combination of potassium fulvate, sodium humate and potassium humate, and the mass ratio is 1:1.
the potassium fulvate can be purchased commercially, including but not limited to potassium fulvate from Jinan Hongculture Co Ltd, and potassium humate can be purchased commercially, including but not limited to potassium humate from Jinan Xinlong Cheng Biotech Co Ltd.
In some embodiments, the granulation additive comprises one or more of a nitrogen fertilizer, a plant growth regulator, a binder, and a chelating agent.
Preferably, the granulating additive comprises 1-5% of nitrogen fertilizer, 1-5% of plant growth regulator, 1-5% of binder and 1-10% of chelating agent according to mass ratio.
In some embodiments, the nitrogen fertilizer is at least one of urea, ammonium bicarbonate, ammonium chloride, ammonium nitrate, and the plant growth regulator is zinc sulfate monohydrate and/or magnesium oxide.
Preferably, the nitrogen fertilizer is urea, and the plant growth regulator comprises zinc sulfate monohydrate and magnesium oxide, wherein the mass ratio of the zinc sulfate monohydrate to the magnesium oxide is 1: (0.8-1.2), preferably 1:1.
in some embodiments, the binder is at least one of bentonite, attapulgite, calcium chloride, kaolin.
Preferably, the binder is bentonite, and the particle size of the bentonite is 300-400 meshes.
The source of the bentonite is not particularly limited and can be purchased commercially, including but not limited to, the bentonite purchased from Shijiu's moisturizing gold mineral products limited, with a particle size of 325 mesh.
According to the application, a certain amount of bentonite is added for granulating the fertilizer, so that the obtained granules are uniform, the granulating rate is high, the surface is smooth, the obtained fertilizer is excellent in water solubility and high in disintegration rate, and the obtained iron fertilizer has an instant effect; and bentonite can play a role of a carrier in the fertilizer, and the bentonite absorbs water and swells after being applied to soil, so that the solid-liquid-gas ratio in the soil can be improved, and the soil structure is facilitated to be loose.
In some embodiments, the chelator is prepared by the steps of:
(1) Adding the modified chitosan derivative into the epichlorohydrin solution, stirring and dissolving, carrying out reflux reaction for 3-4h in a constant-temperature water bath, filtering, washing and drying to obtain an intermediate;
(2) Mixing the intermediate obtained in the step (1), acetone thiosemicarbazone and anhydrous sodium carbonate, adding water, stirring at constant temperature, carrying out reflux reaction for 1.5-3h, filtering, washing and drying to obtain a thiosemicarbazone grafted chitosan derivative, and acidifying with hydrochloric acid to obtain the chelating agent.
In some embodiments, the epichlorohydrin solution is a mixed solution of perchloric acid, epichlorohydrin, ethanol and water, and the volume ratio of each substance is (0.1-0.2): (7-9): (0.8-1): 1.
preferably, the epichlorohydrin solution is a mixed solution of perchloric acid, epichlorohydrin, ethanol and water, and the volume ratio of each substance is 0.15:8:0.9:1
In some embodiments, the mass ratio of the intermediate, acetone thiosemicarbazone, and anhydrous sodium carbonate is (0.5-0.7): (0.75-1): 1.
preferably, the mass ratio of the intermediate to the acetone thiosemicarbazone to the anhydrous sodium carbonate is 0.6:0.85:1.
in some embodiments, the constant temperature condition in step (1) is 85-90 ℃, and the constant temperature condition in step (2) is 88-92 ℃.
In some embodiments, the mass ratio of the amount of water added to the intermediate in step (2) is (40-60): 1.
in some embodiments, the modified chitosan derivative is obtained by the steps of: dissolving chitosan in a mixed solution of methanol and acetic acid, adding salicylaldehyde, adjusting the pH to 4.7, reacting for 100-150min, performing suction filtration, separating out reactants, and drying to obtain the modified chitosan derivative.
In some embodiments, the molar ratio of chitosan to salicylaldehyde is (4.2-5): 1, preferably 4.75:1.
In some embodiments, the chitosan has a degree of deacetylation greater than or equal to 95% and is commercially available, including but not limited to, chitosan purchased from Qingdao Bozhi Hui biotechnology Co.
In some embodiments, the volume ratio of methanol to acetic acid is 1: (2-3.5), preferably 1:2.8.
the application discovers that the special modified chitosan derivative and the acetone thiosemicarbazone are adopted to chemically react under specific conditions to bond the sulfur-containing functional group into the chitosan molecular skeleton to form the novel chelating agent, so that the complexing property of chitosan is maintained, the chelating agent is easy to be absorbed by plants, the chelating agent has good environmental compatibility and no toxicity, and the coordination capacity and the complexing selectivity of the sulfur-containing structure to heavy metal are higher, so that the adsorption to heavy metal ions in the soil is enhanced through the double structure and the function of the chelating agent, thereby reducing the heavy metal ion content in the soil and being beneficial to the absorption of crops to iron fertilizers.
The application also provides a preparation method of the instant granular iron fertilizer, which comprises the following steps:
s1, sequentially adding chelate iron, ferrous sulfate and humic acid into a reversible gravity-free stirrer according to a proportion, stirring, and then transferring into a pulverizer to pulverize into powder of 100-300 meshes;
s2, adding the granulation additive and water into a hot-melting tank, and stirring until the mixture is dissolved to obtain granulation slurry;
s3, putting the powder obtained in the step S1 into a pill-rubbing granulator according to the mass ratio of 100: (0.8-1.2) spraying the granulating slurry to obtain spherical particles with the diameter of 2-4 mm;
and S4, drying and dehydrating the spherical particles obtained in the step S3, and then sieving the spherical particles by a rotary vibration sieve to obtain the instant granular iron fertilizer.
In some embodiments, the stirring in step S1 comprises stirring for 5-10min, followed by stirring for 10-20min.
Compared with the prior art, the application has the following beneficial effects:
(1) The prepared iron fertilizer has uniform particles, excellent appearance, easy mechanized operation and good compound use performance with nitrogen, phosphorus and potassium fertilizers, can achieve the performance equivalent to that of the chelated iron fertilizer, but has obviously reduced cost compared with the chelated iron fertilizer, and greatly improves the income of crops;
(2) The application adopts the ferrous sulfate and the chelated iron with specific proportion, so that the prepared iron fertilizer has higher absorption and utilization rate in alkaline soil, and simultaneously, the chelated iron and the ferrous sulfate are adsorbed by a chelating group after being stirred and mixed in a clockwise and anticlockwise manner for a certain time in the preparation process, so that the ferrous sulfate is not easy to oxidize, thereby endowing the iron fertilizer with excellent bioavailability and absorptivity, and the synergistic effect of organic and inorganic aspects ensures that the iron fertilizer product has stable performance, obvious soil improvement effect and high absorption and utilization rate;
(3) According to the application, the special modified chitosan derivative and the acetone thiosemicarbazone are adopted to chemically react under specific conditions to bond the sulfur-containing functional group into the chitosan molecular skeleton to form the novel chelating agent, so that on one hand, the complexing property of chitosan is maintained, the chitosan is easy to be absorbed by plants, the chitosan has the characteristics of good environmental compatibility and no toxicity, on the other hand, the coordination capacity and complexing selectivity of the sulfur-containing structure on heavy metals are higher, and through the dual structure and the functions of the chitosan derivative and the acetone thiosemicarbazone, the adsorption on heavy metal ions in soil is enhanced, so that the content of heavy metal ions in soil is reduced, and the iron fertilizer absorption by crops is facilitated.
Detailed Description
The technical solutions of the present application will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Example 1
An instant granular iron fertilizer comprises the following raw materials in percentage by mass: 28% of EDDHA iron, 7% of IDHA iron, 50% of ferrous sulfate, 4% of potassium fulvate, 4% of potassium humate, 2% of nitrogenous fertilizer, 1% of plant growth regulator, 2% of bentonite and 2% of chelating agent.
EDDHA iron is purchased from Jiangsu Miao biosciences Inc., and IDHA iron is purchased from Liaoning Wan Rong Chemicals Co., ltd; the potassium fulvate is purchased from Jinan Hongculture Co Ltd, and the potassium humate is purchased from Jinan Xinlong Cheng Biotechnology Co Ltd; the plant growth regulator comprises zinc sulfate monohydrate and magnesium oxide, wherein the mass ratio of the zinc sulfate monohydrate to the magnesium oxide is 1:1, a step of; bentonite was purchased from Shijizhuang's moisturizing gold ore products limited and had a particle size of 325 mesh.
The chelating agent is prepared by the following steps:
(1) Adding the modified chitosan derivative into a solution of epichlorohydrin, stirring and dissolving, carrying out reflux reaction for 3.5h in a constant-temperature water bath at 88 ℃, filtering, washing a product with acetone, and drying at 60 ℃ to obtain an intermediate;
(2) And (3) mixing the intermediate obtained in the step (1), acetone thiosemicarbazone and anhydrous sodium carbonate according to the following ratio of 0.6:0.85:1, adding water into the mixture, stirring the mixture, keeping the temperature at 90 ℃, carrying out reflux reaction for 2 hours, filtering the mixture, washing the mixture to be neutral by distilled water, 2% sodium hydroxide, 1% hydrochloric acid and distilled water in sequence, washing the mixture by acetone, drying the mixture at 60 ℃ to obtain thiosemicarbazone grafted chitosan derivative, and acidifying the thiosemicarbazone grafted chitosan derivative by hydrochloric acid to obtain the chelating agent.
The solution of the epichlorohydrin is a mixed solution of perchloric acid, epichlorohydrin, ethanol and water, and the volume ratio of each substance is 0.15:8:0.9:1.
the mass ratio of the water addition amount to the intermediate in the step (2) is 50:1.
the modified chitosan derivative is obtained by the following steps: chitosan was dissolved in a volume ratio of 1:2.8, then adding salicylaldehyde, regulating the pH value to 4.7, carrying out suction filtration after reacting for 125min, separating out reactants, and drying to obtain the modified chitosan derivative.
Wherein the molar ratio of chitosan to salicylaldehyde is 4.75:1, the deacetylation degree of chitosan is more than or equal to 95%, and the chitosan is purchased from Qingdao Bozhi Hui biological technology Co.
The preparation method of the instant granular iron fertilizer comprises the following steps:
s1, sequentially adding chelate iron, ferrous sulfate and humic acid into a reversible gravity-free stirrer according to a proportion, sequentially stirring for 8min, stirring for 15min reversely, and then transferring into a pulverizer to pulverize into powder of 300 meshes;
s2, adding the granulation additive and water into a hot-melting tank, and stirring until the mixture is dissolved to obtain granulation slurry;
s3, putting the powder obtained in the step S1 into a pill-rubbing granulator according to the mass ratio of 100:1, slowly spraying granulation slurry to obtain spherical particles with the diameter of 2-4 mm;
and S4, drying and dehydrating the spherical particles obtained in the step S3, and then sieving the spherical particles by a rotary vibration sieve to obtain the instant granular iron fertilizer.
Example 2
An instant granular iron fertilizer comprises the following raw materials in percentage by mass: 18% of EDDHA iron, 7% of IDHA iron, 60% of ferrous sulfate, 1% of potassium fulvate, 1% of potassium humate, 3% of nitrogen fertilizer, 3% of plant growth regulator, 3% of bentonite and 4% of chelating agent.
EDDHA iron is purchased from Jiangsu Miao biosciences Inc., and IDHA iron is purchased from Liaoning Wan Rong Chemicals Co., ltd; the potassium fulvate is purchased from Jinan Hongculture Co Ltd, and the potassium humate is purchased from Jinan Xinlong Cheng Biotechnology Co Ltd; the plant growth regulator comprises zinc sulfate monohydrate and magnesium oxide, wherein the mass ratio of the zinc sulfate monohydrate to the magnesium oxide is 1:1, a step of; bentonite was purchased from Shijizhuang's moisturizing gold ore products limited and had a particle size of 325 mesh.
The chelating agent is prepared by the following steps:
(1) Adding the modified chitosan derivative into a solution of epichlorohydrin, stirring and dissolving, carrying out reflux reaction for 3.5h in a constant-temperature water bath at 88 ℃, filtering, washing a product with acetone, and drying at 60 ℃ to obtain an intermediate;
(2) And (3) mixing the intermediate obtained in the step (1), acetone thiosemicarbazone and anhydrous sodium carbonate according to the following ratio of 0.6:0.85:1, adding water into the mixture, stirring the mixture, keeping the temperature at 90 ℃, carrying out reflux reaction for 2 hours, filtering the mixture, washing the mixture to be neutral by distilled water, 2% sodium hydroxide, 1% hydrochloric acid and distilled water in sequence, washing the mixture by acetone, drying the mixture at 60 ℃ to obtain thiosemicarbazone grafted chitosan derivative, and acidifying the thiosemicarbazone grafted chitosan derivative by hydrochloric acid to obtain the chelating agent.
The solution of the epichlorohydrin is a mixed solution of perchloric acid, epichlorohydrin, ethanol and water, and the volume ratio of each substance is 0.15:8:0.9:1.
the mass ratio of the water addition amount to the intermediate in the step (2) is 50:1.
the modified chitosan derivative is obtained by the following steps: chitosan was dissolved in a volume ratio of 1:2.8, then adding salicylaldehyde, regulating the pH value to 4.7, carrying out suction filtration after reacting for 125min, separating out reactants, and drying to obtain the modified chitosan derivative.
Wherein the molar ratio of chitosan to salicylaldehyde is 4.75:1, the deacetylation degree of chitosan is more than or equal to 95%, and the chitosan is purchased from Qingdao Bozhi Hui biological technology Co.
The preparation method of the instant granular iron fertilizer comprises the following steps:
s1, sequentially adding chelate iron, ferrous sulfate and humic acid into a reversible gravity-free stirrer according to a proportion, sequentially stirring for 5min, stirring for 20min reversely, and then transferring into a pulverizer to pulverize into powder of 300 meshes;
s2, adding the granulation additive and water into a hot-melting tank, and stirring until the mixture is dissolved to obtain granulation slurry;
s3, putting the powder obtained in the step S1 into a pill-rubbing granulator according to the mass ratio of 100:1.2, slowly spraying granulation slurry to obtain spherical particles with the diameter of 2-4 mm;
and S4, drying and dehydrating the spherical particles obtained in the step S3, and then sieving the spherical particles by a rotary vibration sieve to obtain the instant granular iron fertilizer.
Example 3
An instant granular iron fertilizer comprises the following raw materials in percentage by mass: 34% of EDDHA iron, 6% of IDHA iron, 40% of ferrous sulfate, 4% of potassium fulvate, 4% of potassium humate, 2% of nitrogen fertilizer, 2% of plant growth regulator, 3% of bentonite and 5% of chelating agent.
EDDHA iron is purchased from Jiangsu Miao biosciences Inc., and IDHA iron is purchased from Liaoning Wan Rong Chemicals Co., ltd; the potassium fulvate is purchased from Jinan Hongculture Co Ltd, and the potassium humate is purchased from Jinan Xinlong Cheng Biotechnology Co Ltd; the plant growth regulator comprises zinc sulfate monohydrate and magnesium oxide, wherein the mass ratio of the zinc sulfate monohydrate to the magnesium oxide is 1:1, a step of; bentonite was purchased from Shijizhuang's moisturizing gold ore products limited and had a particle size of 325 mesh.
The chelating agent is prepared by the following steps:
(1) Adding the modified chitosan derivative into a solution of epichlorohydrin, stirring and dissolving, carrying out reflux reaction for 3.5h in a constant-temperature water bath at 88 ℃, filtering, washing a product with acetone, and drying at 60 ℃ to obtain an intermediate;
(2) And (3) mixing the intermediate obtained in the step (1), acetone thiosemicarbazone and anhydrous sodium carbonate according to the following ratio of 0.6:0.85:1, adding water into the mixture, stirring the mixture, keeping the temperature at 90 ℃, carrying out reflux reaction for 2 hours, filtering the mixture, washing the mixture to be neutral by distilled water, 2% sodium hydroxide, 1% hydrochloric acid and distilled water in sequence, washing the mixture by acetone, drying the mixture at 60 ℃ to obtain thiosemicarbazone grafted chitosan derivative, and acidifying the thiosemicarbazone grafted chitosan derivative by hydrochloric acid to obtain the chelating agent.
The solution of the epichlorohydrin is a mixed solution of perchloric acid, epichlorohydrin, ethanol and water, and the volume ratio of each substance is 0.15:8:0.9:1.
the mass ratio of the water addition amount to the intermediate in the step (2) is 50:1.
the modified chitosan derivative is obtained by the following steps: chitosan was dissolved in a volume ratio of 1:2.8, then adding salicylaldehyde, regulating the pH value to 4.7, carrying out suction filtration after reacting for 125min, separating out reactants, and drying to obtain the modified chitosan derivative.
Wherein the molar ratio of chitosan to salicylaldehyde is 4.75:1, the deacetylation degree of chitosan is more than or equal to 95%, and the chitosan is purchased from Qingdao Bozhi Hui biological technology Co.
The preparation method of the instant granular iron fertilizer comprises the following steps:
s1, sequentially adding chelate iron, ferrous sulfate and humic acid into a reversible gravity-free stirrer according to a proportion, sequentially stirring for 10min in a clockwise direction and a anticlockwise direction, stirring for 10min in a anticlockwise direction, and then transferring into a pulverizer to pulverize into powder of 300 meshes;
s2, adding the granulation additive and water into a hot-melting tank, and stirring until the mixture is dissolved to obtain granulation slurry;
s3, putting the powder obtained in the step S1 into a pill-rubbing granulator according to the mass ratio of 100: slowly spraying granulation slurry into the mixture to obtain spherical particles with the diameter of 2-4 mm;
and S4, drying and dehydrating the spherical particles obtained in the step S3, and then sieving the spherical particles by a rotary vibration sieve to obtain the instant granular iron fertilizer.
Example 4
The present example provides an instant granular iron fertilizer and a method for preparing the same, and the specific embodiment is the same as example 1, except that the chelated iron in the raw material is replaced by an equivalent amount of ferrous sulfate.
Example 5
This example provides an instant granular iron fertilizer and a method for preparing the same, and the specific embodiment is the same as example 1, except that no chelating agent is added to the raw materials.
Evaluation of Effect
1. Iron content
Selecting a watermelon greenhouse with iron-deficiency yellow leaf problem, randomly selecting 25 pieces, 5 pieces of the watermelon greenhouse, marking the watermelon greenhouse as test groups 1-5, ditching at the periphery of each root by 30cm, ditching depth by 20cm, respectively applying the iron fertilizer prepared in examples 1-5 to the test groups 1-5, applying 200 g/piece of the iron fertilizer, adding water into a pit for irrigation after applying the organic iron fertilizer, backfilling surface soil, collecting each group of leaves after 15 days and 30 days, detecting the appearance of the watermelon leaves and the content of iron elements, respectively setting 3 groups of parallel tests to each test group, and carrying out weighted average on each group of test data to obtain test results. Wherein an iron content of less than 35mg/kg is absent, in the range of 35-59mg/kg is noted as low; the results are shown in Table 1, where the amount is in the range of 60-120mg/kg and the amount is higher than 120 mg/kg.
TABLE 1
2. Heavy metal content
A paddy rice test field polluted by heavy metal in a certain area is selected, 5 test areas are arranged in the area, the iron fertilizer of the embodiment 1-5 is respectively used in each test area, the fertilizing amount is 65 kg/mu, 3 groups of parallel tests are respectively arranged for the test groups, and the test results are obtained by weighted average of the test data of each group, as shown in the table 2.
TABLE 2
As can be seen from the data in tables 1 and 2, the instant granular iron fertilizer provided by the embodiments 1-3 of the application not only can be used for effectively supplementing iron to crops and improving iron deficiency yellow leaf diseases, but also can be used for effectively reducing the cadmium content and mercury content in soil and crops, and has a certain yield increasing effect on the crops. In the embodiment 4, as the chelated iron is replaced by ferrous sulfate, the iron content absorbed by crops is obviously reduced, a certain yellow leaf phenomenon occurs at the same time, and the yield of the crops is influenced, but the embodiment has no obvious influence on the removal effect of heavy metals in soil and the crops; the result shows that the fertilizer has no obvious effect on supplementing iron content and improving yellow mosaic disease, but has obvious effect on rice yield, soil and heavy metal removal effect in crops.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present application, and not for limiting the same, and although the present application has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present application without departing from the spirit and scope of the technical solution of the present application, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present application.
Claims (10)
1. The instant granular iron fertilizer is characterized by comprising the following raw materials in percentage by mass: 25-40% of chelated iron, 40-60% of ferrous sulfate, 1-15% of humic acid and 5-20% of granulating additive;
the chelate iron comprises one or more of EDTA iron, EDDHA iron, IDHA iron and DTPA iron.
2. The quick-dissolving granular iron fertilizer of claim 1 wherein the humic acid comprises one or more of potassium fulvate, sodium humate, potassium humate.
3. An instant particulate iron fertilizer according to claim 1, wherein the pelleting additive comprises one or more of nitrogen fertilizer, plant growth regulator, binder and chelating agent.
4. An instant particulate iron fertilizer according to claim 3, wherein the nitrogen fertilizer is at least one of urea, ammonium bicarbonate, ammonium chloride, ammonium nitrate, and the plant growth regulator is zinc sulfate monohydrate and/or magnesium oxide.
5. A quick-dissolving particulate iron fertilizer according to claim 3, wherein the binder is at least one of bentonite, attapulgite, calcium chloride and kaolin.
6. A quick-dissolving particulate iron fertilizer according to claim 3, wherein the chelating agent is prepared by the steps of:
(1) Adding the modified chitosan derivative into the epichlorohydrin solution, stirring and dissolving, carrying out reflux reaction for 3-4h in a constant-temperature water bath, filtering, washing and drying to obtain an intermediate;
(2) Mixing the intermediate obtained in the step (1), acetone thiosemicarbazone and anhydrous sodium carbonate, adding water, stirring at constant temperature, carrying out reflux reaction for 1.5-3h, filtering, washing and drying to obtain a thiosemicarbazone grafted chitosan derivative, and acidifying with hydrochloric acid to obtain the chelating agent.
7. The instant granular iron fertilizer according to claim 6, wherein the solution of epichlorohydrin is a mixed solution of perchloric acid, epichlorohydrin, ethanol and water, and the volume ratio of each substance is (0.1-0.2): (7-9): (0.8-1): 1.
8. the instant granular iron fertilizer of claim 6, wherein the mass ratio of the intermediate, the acetone thiosemicarbazone and the anhydrous sodium carbonate is (0.5-0.7): (0.75-1): 1.
9. a process for the preparation of an instant particulate iron fertilizer according to any one of claims 1 to 8, comprising the steps of:
s1, sequentially adding chelate iron, ferrous sulfate and humic acid into a reversible gravity-free stirrer according to a proportion, stirring, and then transferring into a pulverizer to pulverize into powder of 100-300 meshes;
s2, adding the granulation additive and water into a hot-melting tank, and stirring until the mixture is dissolved to obtain granulation slurry;
s3, putting the powder obtained in the step S1 into a pill-rubbing granulator according to the mass ratio of 100: (0.8-1.2) spraying the granulating slurry to obtain spherical particles with the diameter of 2-4 mm;
and S4, drying and dehydrating the spherical particles obtained in the step S3, and then sieving the spherical particles by a rotary vibration sieve to obtain the instant granular iron fertilizer.
10. The method for preparing an instant granular iron fertilizer according to claim 9, wherein the stirring in the step S1 comprises stirring for 5-10min in the forward direction and stirring for 10-20min in the reverse direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310930412.4A CN116969802A (en) | 2023-07-27 | 2023-07-27 | Instant granular iron fertilizer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310930412.4A CN116969802A (en) | 2023-07-27 | 2023-07-27 | Instant granular iron fertilizer and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116969802A true CN116969802A (en) | 2023-10-31 |
Family
ID=88480887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310930412.4A Pending CN116969802A (en) | 2023-07-27 | 2023-07-27 | Instant granular iron fertilizer and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116969802A (en) |
-
2023
- 2023-07-27 CN CN202310930412.4A patent/CN116969802A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| LU500810B1 (en) | Synergistic and stable nitrogen fertilizer and manufacturing process therefor | |
| US5962717A (en) | Plant micronutrient chelating surfactant compounds | |
| EP1997793A2 (en) | Heteromolecular metal-humic (chelate) complexes | |
| CN1837157A (en) | Water-soluble humic acid paste-form fertilizer and its making process | |
| US6783567B1 (en) | Composition and method for soil acidification | |
| CN1060147C (en) | High concentrative non-flocculant humic acids complexed nutrient liquid and preparation thereof | |
| Sekhon | Chelates for micronutrient nutrition among crops | |
| CN108586100A (en) | A kind of foliar fertilizer and preparation method thereof | |
| CN104496695A (en) | Special efficient compound fertilizer for chernozem | |
| AU2003252201B2 (en) | Chelated plant micronutrients | |
| US20030101785A1 (en) | Micronutrient compositions including aminophosphonic acid and chelated metal ions | |
| CN113214020A (en) | Zinc-selenium nutrient solution for plants and preparation method thereof | |
| CN116969802A (en) | Instant granular iron fertilizer and preparation method thereof | |
| CN113200777A (en) | Green efficient chelating medium-trace element water-soluble fertilizer and preparation method thereof | |
| TWI555721B (en) | Sulfur fertilizer | |
| CN109438266B (en) | Environment-friendly iminodisuccinic acid chelated metal salt | |
| CN1408681A (en) | Composite chelate full nutritive plant growing agent and its preparing method | |
| CN1948235A (en) | High content organic inorganic composite mixed fertilizer | |
| CN111995473A (en) | Instant chelated liquid fertilizer and preparation method thereof | |
| CN111533602A (en) | Special foliar fertilizer for selenium-rich biological rice | |
| CN117625200B (en) | Preparation method and application of contaminated soil heavy metal passivation material | |
| CN108003047B (en) | Iminodisuccinic acid chelated metal salt | |
| AU3505899A (en) | Liquid concentrate | |
| SU1507762A1 (en) | Complex microfertilizer | |
| Mokolobate | An evaluation of the use of organic amendments to ameliorate aluminium toxicity and phosphorus deficiency in an acid soil. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |