LU504968B1 - Preparation method of a compound fertilizer with water and fertilizer retention function - Google Patents
Preparation method of a compound fertilizer with water and fertilizer retention function Download PDFInfo
- Publication number
- LU504968B1 LU504968B1 LU504968A LU504968A LU504968B1 LU 504968 B1 LU504968 B1 LU 504968B1 LU 504968 A LU504968 A LU 504968A LU 504968 A LU504968 A LU 504968A LU 504968 B1 LU504968 B1 LU 504968B1
- Authority
- LU
- Luxembourg
- Prior art keywords
- fertilizer
- preparation
- water
- compound fertilizer
- synergist
- Prior art date
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 150000001875 compounds Chemical class 0.000 title claims abstract description 40
- 230000014759 maintenance of location Effects 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000010455 vermiculite Substances 0.000 claims abstract description 14
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 14
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000440 bentonite Substances 0.000 claims abstract description 10
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005469 granulation Methods 0.000 claims abstract description 10
- 230000003179 granulation Effects 0.000 claims abstract description 10
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims description 14
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 4
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 claims description 4
- 239000010419 fine particle Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 4
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 4
- 239000006012 monoammonium phosphate Substances 0.000 claims description 4
- 239000001103 potassium chloride Substances 0.000 claims description 4
- 235000011164 potassium chloride Nutrition 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 2
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 2
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000035699 permeability Effects 0.000 abstract description 2
- 238000011282 treatment Methods 0.000 description 13
- 239000002689 soil Substances 0.000 description 10
- 240000008042 Zea mays Species 0.000 description 9
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 9
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 9
- 235000005822 corn Nutrition 0.000 description 9
- 235000015097 nutrients Nutrition 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 125000002091 cationic group Chemical group 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 238000012271 agricultural production Methods 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 230000004720 fertilization Effects 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 235000021049 nutrient content Nutrition 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229960003975 potassium Drugs 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 239000005909 Kieselgur Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 238000009331 sowing Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229920000945 Amylopectin Polymers 0.000 description 1
- 235000012273 Artemisia sphaerocephala Nutrition 0.000 description 1
- 241000584211 Artemisia sphaerocephala Species 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000005696 Diammonium phosphate Substances 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000014820 Galium aparine Nutrition 0.000 description 1
- 240000005702 Galium aparine Species 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 241000361919 Metaphire sieboldi Species 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 125000003275 alpha amino acid group Chemical group 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 150000001767 cationic compounds Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012272 crop production Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 210000003278 egg shell Anatomy 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 235000021190 leftovers Nutrition 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000001508 potassium citrate Substances 0.000 description 1
- 229960002635 potassium citrate Drugs 0.000 description 1
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 description 1
- 235000011082 potassium citrates Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 235000010268 sodium methyl p-hydroxybenzoate Nutrition 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- PESXGULMKCKJCC-UHFFFAOYSA-M sodium;4-methoxycarbonylphenolate Chemical compound [Na+].COC(=O)C1=CC=C([O-])C=C1 PESXGULMKCKJCC-UHFFFAOYSA-M 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic 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
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- 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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- 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
- 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
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a preparation method of a compound fertilizer with water and fertilizer retention functions, which comprises: fertilizer raw material, filler and synergist, wherein the synergist is vermiculite powder with a particle size of 200-400 meshes, accounting for 5-10% of the weight of the compound fertilizer, and the filler is bentonite; According to the invention, vermiculite powder, bentonite and fertilizer raw materials are compounded, then are conveyed to a rotary drum granulator, and saturated steam is introduced for granulation at the same time, so that a compound fertilizer with strong water absorption and water retention performance and long fertilizer effect is obtained, and the compound fertilizer has small bulk density, good air permeability, low material cost and easy popularization and use.
Description
DESCRIPTION LU504968
PREPARATION METHOD OF A COMPOUND FERTILIZER WITH WATER AND
FERTILIZER RETENTION FUNCTION
The invention relates to a preparation method of a compound fertilizer with water and fertilizer retention functions, and belongs to the technical field of fertilizers.
Chemical fertilizer is one of the important material inputs in agricultural production.
According to the statistics of Food and Agriculture Organization of the United Nations (FAO), chemical fertilizer accounts for more than half of the contribution to crop production. The application of chemical fertilizer plays an important role in ensuring the effective supply of agricultural products. China has a large population, and the cultivated land area is relatively scarce. It is necessary to ensure food security by improving the yield and efficiency per unit area.
Applying chemical fertilizer is one of the most effective measures to increase agricultural production in the past, present and future. Because chemical fertilizer is easy to decompose and lose, it can't be absorbed and utilized by crops in time, and its utilization rate is low, how to reduce nutrient loss of fertilizer and improve fertilizer utilization rate has become an urgent problem at present. At the same time, China is facing a serious problem of water resources. The distribution of water resources in time and space is extremely uneven, and water resources are extremely short. How to make the most economical and reasonable use of limited water resources and improve the efficiency of agricultural water use has also become an urgent problem in current agricultural production.
Fertilizer with water and fertilizer retention function is an effective way to solve the problems of low utilization rate of water resources and fertilizer. At present, organic compounds such as polymer resin are mostly used as water-retaining or fertilizer-retaining agents to achieve the function of water-retaining and fertilizer-retaining. The production process is relatively complicated and the stability is poor, which greatly increases the production cost of fertilizer and greatly limits its application in production. LU504968
China patent document CN 104098381A discloses a water-retaining and yield-increasing slow-release compound fertilizer, The fertilizer is prepared from the following raw materials in parts by weight: 10-15 diatomaceous earth with 1250-2000 meshes, 5-6 calcium chloride, 4-5 sodium borate, 18-20 potassium citrate, 23-25 urea, 20-25 diammonium phosphate, 15-18 fermentation broth of crop leftovers, 4-5 plasma of livestock, 10-12 vinegar residue, 1-3 egg shell powder, 2-3 cleavers, 1-2 toosendan seed powder, 2-3 soybean peptide powder, 6-8 parts of earthworm excrement, 4-5 dry ears of corn, 1-2 sodium methylparaben, 10-12 cross-linked polyvinylpyrrolidone, 3-4 methyl methacrylate, 4-5 butyl acrylate, 1-2 sodium dodecyl benzene sulfonate, 0.1-0.2 ammonium persulfate, 2-4 medical stone powder, 6-8 ferric polysilicate sulfate and 4-5 auxiliaries. The compound fertilizer prepared by the invention uses diatomaceous earth and slow-release coating agent to form double coating on nutrients, so that the nutrients are not easy to lose, the fertilizer efficiency is more lasting, and the compound fertilizer has the water-retaining and drought-resistant abilities, can meet the nutrients required by the growth of crops at all stages, and does not destroy the soil ecological environment. China patent document
CN101113119A discloses a water-retaining fertilizer and a preparation method thereof. The water-retaining fertilizer is compounded by 90-99wt% of cationic superabsorbent resin and 1-10wt% of chelated nutrient solution. The superabsorbent resin is a copolymer formed by cationic polyacrylic acid-acrylamide. In the cationic superabsorbent resin, a copolymer is formed by acrylic acid, acrylamide and cationic compounds, each monomer accounts for 5-40wt% of acrylic acid, 5-40wt% of acrylamide, 0.01-5wt% of cationic monomer and the balance of deionized water. The invention introduces a new cationic monomer in the preparation of water-absorbent resin, which improves the water absorption of water-retaining materials. China patent document CN103589436A discloses a soil water and fertilizer retaining agent, which contains the following raw materials by weight: 15-35wt% of carboxymethyl cellulose, 35-55wt% of amylopectin, 10-25wt% of Artemisia sphaerocephala seed gum and 5-20wt% of brown sugar.
The invention introduces carboxymethyl cellulose (CMC), which has strong water absorption and long-term moisturizing stability in mud. CN 106045669A discloses a compound fertilizer and a preparation method thereof, which comprises a chemical fertilizer and a synergist, wherein the synergist is amino acid modified organopolysiloxane emulsion.
Therefore, there is an urgent need for a compound fertilizer with strong water retention ark 004968 long-term fertilizer effect without organic compounds such as polymer resin.
Aiming at the shortcomings of the prior art, the invention provides a preparation method of a compound fertilizer with water and fertilizer retention functions. The compound fertilizer obtained by the invention has strong water absorption and water retention performance and long fertilizer efficiency.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
The invention relates to a preparation method of a compound fertilizer with water and fertilizer retention functions, which comprises: fertilizer raw material, filler and synergist, wherein the synergist is vermiculite powder with a particle size of 200-400 meshes, accounting for 5-10% of the weight of the compound fertilizer, and the filler is bentonite;
The preparation method of the compound fertilizer with water and fertilizer retention function comprises the following steps: 1) Raw materials are weighed according to the proportion, crushed and evenly mixed for later use; 2) Conveying the powdery mixture to a rotary drum granulator, and introducing saturated steam at the same time, so as to improve the temperature and viscosity of the material, increase the salt solubility of the granulated material, achieve the quantity of liquid phase meeting the granulation needs of the material under the condition of low moisture content, and reduce the thermal energy consumption in the drying process; The temperature of saturated steam is 140°C-160°C and the pressure is 0.35MPa-0.6MPa; 3) Conveying the primary granulated product to a rotary dryer for drying; 4) Conveying the dried primary granulated product to a thermal screening machine for sorting, and directly returning the fine particles to a rotary drum granulator to continue granulating; 5) Conveying the screened semi-finished particles to a rotary cooler, cooling by natural cold air or forced cold air, and crushing the large particles by a pulverizer and returning to a rotary drum granulator to continue to participate in granulation. LU504968
According to the invention, it is preferred that the particle size of vermiculite powder is 200-400 mesh.
More preferably, the particle size of vermiculite powder is 300-400 mesh.
According to the invention, it is preferred that the synergist accounts for 8-10% of the compound fertilizer by weight.
According to the invention, it is preferred that the filler accounts for 5-20% of the compound fertilizer by weight.
According to the invention, it is preferred that the particle size of bentonite is 100-200 meshes.
According to the invention, it is preferred that the raw material of the chemical fertilizer is one or a mixture of two or more of urea, ammonium sulfate, ammonium chloride, monoammonium phosphate, calcium superphosphate, potassium sulfate or potassium chloride.
Vermiculite is a plate-like natural clay mineral, which is formed by hydrothermal alteration and later weathering of ultrabasic complex and has renewable characteristics. The chemical composition of vermiculite can be roughly expressed by [Mg 3 (Si 3 AI)O 10 (OH) 2 ][Mg 0.5 (H 2 O)y], which is a layered magnesium-containing aluminosilicate. Its basic structural unit is composed of two layers of silicate (a small amount of aluminate) tetrahedron sandwiched with a layer of magnesium-containing octahedron, forming a "sandwich" silicate skeleton, and there is hydration between the skeleton and the skeleton. The existence of these exchangeable cations and water molecules makes it have strong ion exchange ability. The vermiculite powder with a particle size of 200-400 meshes has high ion exchange, water absorption, plasticity and viscosity, which is convenient for fertilizer pelletization. When applied to soil, it can keep water and fertilizer nutrients.
Bentonite takes montmorillonite as the main mineral component, and its structure is a 2:1 crystal structure composed of two silicon-oxygen tetrahedrons sandwiched by an aluminum-oxygen octahedron. The main chemical components are silicon dioxide, aluminum trioxide and water, which has strong hygroscopicity and expansibility, can be dispersed into gelatinous and suspended forms in water medium, and has certain viscosity, thixotropy and lubricity, which is convenient for fertilizer pelletization. Because there are some cations in the layered structure formed by montmorillonite cell, it is easy to be exchanged by other cations ar 204968 has good ion exchange. When applied to soil, it can keep water and fertilizer nutrients.
According to the invention, vermiculite powder, bentonite and fertilizer raw materials are compounded, then are conveyed to a rotary drum granulator, and saturated steam is introduced for granulation at the same time, so that a compound fertilizer with strong water absorption and water retention performance and long fertilizer effect is obtained, and the compound fertilizer has small bulk density, good air permeability, low material cost and easy popularization and use.
The present invention will be further illustrated with embodiments.
Embodiment 1:
The invention relates to a compound fertilizer with water and fertilizer retention functions, which comprises a chemical fertilizer raw material, a filler and a synergist; The raw materials of chemical fertilizer include urea (containing N 46%), monoammonium phosphate (containing N 11%, P:O5s 44%) and potassium chloride (containing KO 60%), the filler is bentonite, and the synergist is vermiculite powder. The components by weight are as follows:
The preparation method comprises the following steps: 1) Raw materials are weighed according to the proportion, crushed and evenly mixed for later use; 2) Conveying the powdery mixture to a rotary drum granulator, and introducing saturated steam at the same time, so as to improve the temperature and viscosity of the material, increase the salt solubility of the granulated material, achieve the quantity of liquid phase meeting the granulation needs of the material under the condition of low moisture content, and reduce the thermal energy consumption in the drying process; The temperature of saturated steam is 150°C and the pressure is 0.5MPa; 3) Conveying the primary granulated product to a rotary dryer for drying; 4) Conveying the dried primary granulated product to a thermal screening machine for sorting, and directly returning the fine particles to a rotary drum granulator to continue granulating; 5) Conveying the screened semi-finished particles to a rotary cooler, cooling by natural cold air or forced cold air, and crushing the large particles by a pulverizer and returning to a rotaty’ 504968 drum granulator to continue to participate in granulation. The compound fertilizer with the function of water and fertilizer retention is obtained, and the mass percentage of nitrogen, phosphorus and potassium is 15:15:15, which is a balanced compound fertilizer with the function of water and fertilizer retention suitable for various crops.
Embodiment 2:
The invention relates to a compound fertilizer with water and fertilizer retention functions, which comprises a chemical fertilizer raw material, a filler and a synergist; The raw materials of chemical fertilizer include urea (containing N 46%), monoammonium phosphate (containing N 11%, P:O5s 44%) and potassium chloride (containing KO 60%), the filler is bentonite, and the synergist is vermiculite powder. The components by weight are as follows:
The preparation method comprises the following steps: 1) Raw materials are weighed according to the proportion, crushed and evenly mixed for later use; 2) Conveying the powdery mixture to a rotary drum granulator, and introducing saturated steam at the same time, so as to improve the temperature and viscosity of the material, increase the salt solubility of the granulated material, achieve the quantity of liquid phase meeting the granulation needs of the material under the condition of low moisture content, and reduce the thermal energy consumption in the drying process; The temperature of saturated steam is 160°C and the pressure is 0.6MPa; 3) Conveying the primary granulated product to a rotary dryer for drying; 4) Conveying the dried primary granulated product to a thermal screening machine for sorting, and directly returning the fine particles to a rotary drum granulator to continue granulating; 5) Conveying the screened semi-finished particles to a rotary cooler, cooling by natural cold air or forced cold air, and crushing the large particles by a pulverizer and returning to a rotary drum granulator to continue to participate in granulation. The compound fertilizer with water and fertilizer retention function is obtained, and the mass percentage of nitrogen, phosphorus and potassium is 26:8:6, which is a high-nitrogen compound fertilizer with water and fertilizer retention function suitable for nitrogen-loving crops (such as corn).
Application experiment: LU504968
In order to verify the product effect of the technology of the invention, indoor pot experiment and field experiment are carried out on the fertilizer of the embodiment of the invention and common commercial fertilizer.
Pot experiment is conducted in Jinan, Shandong Province in June, 2021. Three treatments are set, CK treatment (no fertilization) and control. JP treatment (40kg/mu of common commercial compound fertilizer with nutrient content of 26-8-6) and XP treatment (40kg/mu of compound fertilizer with water and fertilizer retention function in Embodiment 2 of the present invention). Set 3 repetitions, a total of 9 pots. The test basin is a ceramic basin with a diameter of 20cm and a height of 25cm. Each basin is filled with 13kg of air-dried soil. When loading the soil, the corresponding fertilizer is added and mixed evenly according to the treatment design, and then lightly compacted, and each basin is watered for 1L. Except for fertilizer application, other treatment measures are consistent. Soil moisture content is measured on the 7th, 14th, 21st and 28th day after watering. The results are as follows:
Table 1 Changes of soil moisture content under different fertilization treatments one wr Je lm wm fer ele
From the results, it can be seen that the compound fertilizer with water and fertilizer retention function prepared by the technology of the invention has obvious water retention effect compared with the common compound fertilizer.
The field experiment is conducted in Wangcheng Station Village, Hujia Street, Laoling City,
Shandong Province from June to October, 2021. This area belongs to warm temperate semi-humid continental monsoon climate with four distinct seasons, with an average annual temperature of 12.4°C and an average annual precipitation of 527. 1mm. The soil type of the experimental plot is fluvo-aquic soil, and the content of organic matter in the topsoil is 11.4g/kg, available nitrogen is 58.7mg/kg, available phosphorus is 18.2mg/kg and available potassium is
116.1mg/kg. The previous crop is wheat, the tested crop is corn, and the variety is denghai 605. LU504968
The experiment adopted random block design and set up three treatments, CK treatment (no fertilization) and control. JP treatment (40kg/mu of common commercial compound fertilizer with nutrient content of 26-8-6) and XP treatment (40kg/mu of compound fertilizer with water and fertilizer retention function of the embodiment of the present invention with nutrient content of 26-8-6) are repeated for three times. The residential area is 40m”. The experiment is carried out on June 12th, with sowing row spacing of 70cm and plant spacing of 25cm. When sowing, the seeds and fertilizers are sown at the same time, and the fertilizers are applied at one time, and no topdressing is required at the later stage. Except for fertilizer application, other management measures are consistent. Corn is harvested on October 2nd, and the yield and yield components are investigated. The results are as follows:
Table 2 Ear row number, number of kernels per row, 1000-grain weight and yield of corn under different treatments
Treatment | Ear row | Kernels 100 grain | Yield Increase Increase number per row | weight (g) | (kg/mu) production | production (rows) (granules) compared | compared to CK | to JP (%) (%) ow me ie wwe ws me Jen fm we Jw [oer Jor Ja
From the corn yield results, the corn yield treated by applying the compound fertilizer with the function of water and fertilizer retention in the embodiment of the invention is obviously improved, which is 5.4% higher than that of the common compound fertilizer with the same nutrient input. The compound fertilizer with the function of water and fertilizer retention improves the utilization efficiency of water and fertilizer nutrients, coordinates the relationship between the components of corn yield and improves corn yield.
The above-mentioned embodiments of the present invention are only embodiments fh 504968 clearly explaining the present invention, and are not limited to the embodiments of the present invention.
For those skilled in the art, other changes or changes in different forms can be made on the basis of the above description.
All embodiments cannot be exhaustive here.
All the obvious changes or changes caused by the technical scheme of the present invention are still within the scope of protection of the present invention.
Claims (7)
1. À preparation method of a compound fertilizer with water and fertilizer retention function, which comprises: fertilizer raw material, filler and synergist, wherein the synergist is vermiculite powder with a particle size of 200-400 meshes, accounting for 5-10% of the weight of the compound fertilizer, and the filler is bentonite; the preparation method of the compound fertilizer with water and fertilizer retention function comprises the following steps: 1) raw materials are weighed according to the proportion, crushed and evenly mixed for later use; 2) conveying the powdery mixture to a rotary drum granulator, and introducing saturated steam at the same time, so as to improve the temperature and viscosity of the material, increase the salt solubility of the granulated material, achieve the quantity of liquid phase meeting the granulation needs of the material under the condition of low moisture content, and reduce the thermal energy consumption in the drying process; the temperature of saturated steam is 140°C-160°C and the pressure is 0.35MPa-0.6MPa; 3) conveying the primary granulated product to a rotary dryer for drying; 4) conveying the dried primary granulated product to a thermal screening machine for sorting, and directly returning the fine particles to a rotary drum granulator to continue granulating; 5) conveying the screened semi-finished particles to a rotary cooler, cooling by natural cold air or forced cold air, and crushing the large particles by a pulverizer and returning to a rotary drum granulator to continue to participate in granulation.
2. The preparation method according to claim 1, characterized in that the particle size of vermiculite powder is 200-400 mesh.
3. The preparation method according to claim 1, characterized in that the particle size of vermiculite powder is 300-400 mesh.
. . . qe . | 1504968
4. The preparation method according to claim 1, characterized in that the synergist accoun for 8-10% of the compound fertilizer by weight.
5. The preparation method according to claim 1, characterized in that the filler accounts for 5-20% of the compound fertilizer by weight.
6. The preparation method according to claim 1, characterized in that the particle size of bentonite is 100-200 meshes.
7. The preparation method according to claim 1, characterized in that the raw material of the chemical fertilizer is one or a mixture of two or more of urea, ammonium sulfate, ammonium chloride, monoammonium phosphate, calcium superphosphate, potassium sulfate or potassium chloride.
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| CN1644569A (en) * | 2004-12-23 | 2005-07-27 | 安徽农业大学 | Ecological drought resistant and water retaining compound fertilizer and production thereof |
| CN102503696A (en) * | 2011-11-10 | 2012-06-20 | 上海化工研究院 | Preparation method for particle compound fertilizer |
| CN104761387A (en) * | 2015-04-13 | 2015-07-08 | 中国热带农业科学院橡胶研究所 | Water-retaining and slowly-release compound fertilizer and preparation method thereof |
| CN105461467A (en) * | 2016-02-01 | 2016-04-06 | 段长林 | Fertilizer special for spring corn in Weibei region |
| CN106397070A (en) * | 2016-11-24 | 2017-02-15 | 周岩 | Compound water retaining slow release fertilizer and production method thereof |
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