WO2023044842A1 - 含硅酸盐砂质肥料的免烘干生产方法 - Google Patents
含硅酸盐砂质肥料的免烘干生产方法 Download PDFInfo
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- WO2023044842A1 WO2023044842A1 PCT/CN2021/120580 CN2021120580W WO2023044842A1 WO 2023044842 A1 WO2023044842 A1 WO 2023044842A1 CN 2021120580 W CN2021120580 W CN 2021120580W WO 2023044842 A1 WO2023044842 A1 WO 2023044842A1
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- WIPO (PCT)
- Prior art keywords
- fertilizer
- silicate
- drying
- production method
- containing sandy
- Prior art date
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 96
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000001035 drying Methods 0.000 title abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 9
- 239000000084 colloidal system Substances 0.000 claims abstract description 3
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 34
- 239000000203 mixture Substances 0.000 claims description 32
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 15
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 15
- 239000000395 magnesium oxide Substances 0.000 claims description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 14
- 235000012245 magnesium oxide Nutrition 0.000 claims description 14
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 14
- 239000008187 granular material Substances 0.000 claims description 12
- 239000003623 enhancer Substances 0.000 claims description 11
- 229920001285 xanthan gum Polymers 0.000 claims description 11
- 239000000230 xanthan gum Substances 0.000 claims description 11
- 229940082509 xanthan gum Drugs 0.000 claims description 11
- 235000010493 xanthan gum Nutrition 0.000 claims description 11
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 10
- 238000005469 granulation Methods 0.000 claims description 10
- 230000003179 granulation Effects 0.000 claims description 10
- 238000010008 shearing Methods 0.000 claims description 10
- 229920002472 Starch Polymers 0.000 claims description 9
- 239000008107 starch Substances 0.000 claims description 9
- 235000019698 starch Nutrition 0.000 claims description 9
- 239000001913 cellulose Substances 0.000 claims description 8
- 229920002678 cellulose Polymers 0.000 claims description 8
- 235000010980 cellulose Nutrition 0.000 claims description 7
- 235000013379 molasses Nutrition 0.000 claims description 7
- 239000000440 bentonite Substances 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 6
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 6
- 235000019738 Limestone Nutrition 0.000 claims description 5
- 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 claims description 5
- 239000006028 limestone Substances 0.000 claims description 5
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 5
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 claims description 5
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 4
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 claims description 4
- 239000000378 calcium silicate Substances 0.000 claims description 3
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical group [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 3
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000391 magnesium silicate Substances 0.000 claims description 3
- 229910052919 magnesium silicate Inorganic materials 0.000 claims description 3
- 235000019792 magnesium silicate Nutrition 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000007873 sieving Methods 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 14
- 235000015097 nutrients Nutrition 0.000 abstract description 7
- 238000012216 screening Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000000047 product Substances 0.000 description 14
- 150000001875 compounds Chemical class 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 238000005054 agglomeration Methods 0.000 description 5
- 230000002776 aggregation Effects 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000007884 disintegrant Substances 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- PUKLDDOGISCFCP-JSQCKWNTSA-N 21-Deoxycortisone Chemical compound C1CC2=CC(=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)C)(O)[C@@]1(C)CC2=O PUKLDDOGISCFCP-JSQCKWNTSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- FCYKAQOGGFGCMD-UHFFFAOYSA-N Fulvic acid Natural products O1C2=CC(O)=C(O)C(C(O)=O)=C2C(=O)C2=C1CC(C)(O)OC2 FCYKAQOGGFGCMD-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002509 fulvic acid Substances 0.000 description 2
- 229940095100 fulvic acid Drugs 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 241000207199 Citrus Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 235000012216 bentonite Nutrition 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 235000020971 citrus fruits Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
-
- 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
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Definitions
- the invention belongs to the technical field of fertilizers, in particular to a drying-free production method of silicate-containing sandy fertilizers.
- the production methods of granular fertilizers include high-tower granulation, slurry method, agglomeration method, etc. Except for high-tower granulation, the production of granular fertilizers by other processes requires a drying process after granulation to remove the water in the granules and make them It achieves a certain particle strength.
- the drying of granular fertilizer requires a lot of energy, which is the main component of the cost in the production of granular fertilizer. If the drying process can be reduced or eliminated, the energy consumption in the fertilizer production process will be greatly reduced, the production cost will be reduced, and the product competitiveness will be improved. .
- CN111285743A discloses a citrate-soluble granular fertilizer and its preparation process, the granular fertilizer is mainly processed by mixing disintegrating materials and powdered citrate-soluble fertilizer according to the weight ratio of (5-25): (75-95); wherein , the disintegrating material is a mixture of inorganic disintegrating material and organic disintegrating material, the inorganic disintegrating material is a mixture of magnesium sulfate and ammonium sulfate, and the organic disintegrating material is amino acid fermentation product, pulp and sodium dodecyl sulfate mixture.
- the citrate-soluble granular fertilizer prepared by the invention can not only avoid the environmental pollution and nutrient loss caused by the powdery citrate-soluble fertilizer being scattered with the wind during application, but also facilitate mechanical fertilization, improve production efficiency, reduce labor costs, and supplement plant fertilizers at the same time. Nutrient elements required for growth, increase crop yield, improve the quality of agricultural products, suitable for popularization and application. Although this invention has obtained the disintegrating citrus soluble granular fertilizer, it needs to be dried after granulation, and the production cost is high.
- the disintegrating granular magnesium sulfate fertilizer composition includes magnesium sulfate and a disintegration synergist; the mass part of the magnesium sulfate is 80-90 parts; the disintegration synergist is composed of citric acid, sodium bicarbonate and fulvic acid Potassium composition; in the disintegration synergist, the parts by mass of each component are: citric acid: 4-9.75 parts; sodium bicarbonate: 4-9.75 parts; potassium fulvic acid: 0.5-2 parts.
- the disintegrating high-efficiency granular magnesium sulfate fertilizer provided by the invention can effectively make up for the deficiency of existing magnesium sulfate fertilizer particles, and has the following advantages: 1. Fast disintegration speed and high disintegration rate; 2. Wide diffusion space and long diffusion distance; 3. It can improve nutrient utilization efficiency, promote crop rooting and germination, and improve soil structure.
- This patent also has the disadvantages of complex production process and high production energy consumption, which is not conducive to energy saving and consumption reduction and product cost reduction.
- CN101462906A discloses a disintegrating compound fertilizer, its production method and additives.
- nitrogen: phosphorus: potassium 0 ⁇ 1:0 ⁇ 1:0 ⁇ 1
- the content of total nutrients in the disintegrating compound fertilizer is 25% ⁇ 60%
- the disintegrating compound fertilizer also contains additives, and the mass percentage of the additive in the disintegrating compound fertilizer is 0.3% to 1.5%.
- the components in the additive and the mass percentage of each component in the additive are: 2% to 40% of sulfuric acid, 2% to 50% of magnesium sulfate, 2% to 50% of borax, and 2% to 10% of sodium dodecylsulfonate.
- the method of the invention is simple in operation and low in cost, improves the quality of the compound fertilizer applied to crops with a short growth period, improves the utilization rate of the fertilizer, and the product can be disintegrated in water within 30 minutes.
- the disintegrated compound fertilizer involved in this patent still needs to be dried, and the production cost is high.
- the purpose of the present invention is to provide a drying-free production method of silicate-containing sandy fertilizer on the basis of the traditional granular fertilizer production process.
- This method creatively adds gel materials, so that the fertilizer particles themselves have a higher Granular strength, eliminating the drying process, and using a special disintegrant to solve the problem of disintegration of the granules during use, which will greatly shorten the production process of granular fertilizers, reduce production costs, and improve product competitiveness.
- a drying-free production method of silicate-containing sandy fertilizer is characterized in that it is carried out in the following steps: adding a reinforcing agent and a disintegrating agent to the sandy or powdery fertilizer containing silicate to form a Fertilizer granule colloid with high strength, and then sieve the granules to obtain the finished product, wherein the amount of enhancer accounts for 1-20% by mass of the total amount of fertilizer, and the amount of disintegrating agent accounts for 1-20% by mass of the total amount of fertilizer %.
- the disintegrating agent when the fertilizer granules meet water or enter the water, they will expand rapidly, disintegrate and form a powder, so that the nutrients of the fertilizer granules can be absorbed and utilized by the crops.
- the silicate is one or a mixture of two or more of calcium silicate, magnesium silicate, sodium silicate, calcium magnesium phosphate fertilizer, and yellow phosphorus slag.
- the reinforcing agent is composed of one or more mixtures of magnesium oxide, magnesium sulfate, magnesium sulfate hydrate, magnesium chloride, magnesium chloride hydrate and limestone.
- the mass percentage of the magnesium oxide in the total amount of the fertilizer is 1%-10%, and the purity of the magnesium oxide is 10-90%.
- the preferred mass percentage of the magnesium oxide in the total amount of fertilizer is 2%-5%.
- the disintegrating agent is composed of one or more combinations of xanthan gum, molasses, cellulose, starch, bentonite, montmorillonite and talcum powder.
- composition of one or more of xanthan gum, molasses, cellulose and starch accounts for 0.1%-20% by mass of the total amount of fertilizer.
- the preferred mass percentage of the composition of xanthan gum, molasses, cellulose and starch in the total amount of fertilizer is 2%-10%.
- a drying-free production method of silicate-containing sandy fertilizer the specific steps are as follows:
- Step 1 Add a certain fineness of magnesium oxide powder and one or more mixtures of magnesium sulfate, magnesium sulfate hydrate, magnesium chloride, magnesium chloride hydrate, and limestone into the mixer according to a certain proportion, and then put it into the mixer under high-speed shearing. Cut off and mix evenly, then dry in a dryer at 120°C for 30-60 minutes to remove the moisture contained in the powder to obtain the enhancer;
- Step 2 Dry a mixture of xanthan gum with a certain fineness and one or more of bentonite, montmorillonite, talcum powder, and starch in a dryer at 120°C for 30-60 minutes, and then dry it according to a certain ratio Add it into a mixer and mix evenly under high-speed shear to obtain a disintegrant;
- Step 3 When granulating the silicate-containing sandy fertilizer, add the above-mentioned enhancer and disintegration accelerator in sequence according to a certain ratio, and roll and granulate into balls.
- the granulation liquid is water. After granulating into balls, wet The granules will gradually increase in strength during the rolling process, and then the finished product can be obtained after sieving and packaging.
- the granular silicate sandy fertilizer produced by the present invention under the action of the disintegrating agent, will expand rapidly when the fertilizer particles meet water or enter the water, disintegrate and form a powder, so that the nutrients of the fertilizer particles can be absorbed by crops. Absorb and utilize.
- This method saves the drying process in the traditional fertilizer production process, is low-carbon and environmentally friendly, and greatly reduces the energy consumption and cost of product production.
- the silicate-containing sandy fertilizer produced by the method has the characteristics of low cost and high fertilizer efficiency.
- Step 1 Taking the total amount of the finished silicate-containing sandy fertilizer as 100%, add magnesium oxide powder with a mass percentage of 5%, magnesium sulfate with a mass percentage of 2%, and magnesium chloride with a mass percentage of 3% into the mixer , mixed evenly under high-speed shearing, and then dried in a dryer at 120°C for 30 minutes to remove the moisture contained in the powder to obtain the reinforcing agent;
- Step two take the finished product as 100% of the total amount of silicate-containing sandy fertilizer, dry 30 minutes in a dryer at 120°C for 30 minutes with 2% xanthan gum and 10% bentonite by mass percentage, and then Add it into a mixer and mix evenly under high-speed shear to obtain a disintegrant;
- Step 3 Mix yellow phosphorus slag and calcium-magnesium phosphate fertilizer in a ratio of 1:1 to crush the sandy fertilizer with 78% silicate mass percentage to 100 mesh fineness, and then add the above-mentioned prepared enhancer in sequence to promote disintegration
- the agent is fully mixed in the mixer, and then enters the granulator for water spraying and granulation by agglomeration method. After the particles grow up, they enter the screening system and sieve the 2-4.5mm particles to obtain the finished product. After testing, the particle strength is 15N, and the disintegration time is 30s.
- Step 1 Taking the total amount of the finished silicate-containing sandy fertilizer as 100%, add magnesium oxide powder with a mass percentage of 10%, magnesium sulfate with a mass percentage of 2%, and limestone with a mass percentage of 3% into the mixer , mixed evenly under high-speed shearing, and then dried in a dryer at 120°C for 40 minutes to remove the moisture contained in the powder to obtain the reinforcing agent;
- Step 2 take the total amount of the finished silicate-containing sandy fertilizer as 100%, bake 10% xanthan gum and starch, 5% bentonite and 5% talcum powder by mass percentage at 120°C Dry it in a dryer for 40 minutes, then add it to a mixer, and mix evenly under high-speed shearing to obtain a disintegrating agent;
- Step 3 Mix yellow phosphorus slag and calcium-magnesium phosphate fertilizer in a ratio of 1:1 to crush the sandy fertilizer with a mass percentage of 65% silicate to a fineness of 200 meshes, and then add the above-mentioned prepared enhancer, disintegration-promoting
- the agent is fully mixed in the mixer, and then enters the granulator for water spraying and granulation by agglomeration method. After the particles grow up, they enter the screening system and sieve the 2-4.5mm particles to obtain the finished product. After testing, the particle strength is 18N, and the disintegration time is 40s.
- Step 1 Taking the total amount of the finished silicate-containing sandy fertilizer as 100%, add magnesium oxide powder with a mass percentage of 1% into the mixer, mix evenly under high-speed shearing, and then dry in a dryer at 120°C After 60 minutes, remove the moisture contained in the powder to obtain the enhancer;
- Step 2 Taking the total amount of the finished silicate-containing sandy fertilizer as 100%, dry 30 minutes in a dryer at 120°C for 30 minutes with 0.1% cellulose, 0.9% montmorillonite and talcum powder by mass percentage , then add it into the mixer, and mix evenly under high-speed shearing to obtain the disintegrating agent;
- Step 3 Mix calcium silicate and calcium magnesium phosphate fertilizer in a ratio of 1:1 to crush a sandy fertilizer with a mass percentage of 98% silicate to a fineness of 100 meshes, and then add the above-mentioned enhancer and disintegration-promoting agent in sequence.
- the agent is fully mixed in the mixer, and then enters the granulator for water spraying and granulation by agglomeration method. After the particles grow up, they enter the screening system and sieve the 2-4.5mm particles to obtain the finished product. After testing, the particle strength is 25N, and the disintegration time is 20s.
- Step 1 Taking the total amount of the finished silicate-containing sandy fertilizer as 100%, add and mix magnesium oxide powder with a mass percentage of 2%, magnesium sulfate with a mass percentage of 2%, and magnesium chloride hydrate with a mass percentage of 1%. In the machine, mix evenly under high-speed shearing, and then dry in a dryer at 120°C for 40 minutes to remove the moisture contained in the powder, and then obtain the reinforcing agent;
- Step 2 Take the total amount of the finished silicate-containing sandy fertilizer as 100%, dry xanthan gum with a mass percentage of 20% in a dryer at 120°C for 60 minutes, then add it to a mixer, and dry it under high-speed shearing. and mix evenly to obtain the disintegrating agent;
- Step 3 Mix magnesium silicate and calcium magnesium phosphate fertilizer in a ratio of 1:1, crush the sandy fertilizer with a mass percentage of 75% silicate to a fineness of 150 meshes, and then add the above-mentioned prepared enhancer, disintegration-promoting
- the agent is fully mixed in the mixer, and then it enters the granulator for water spraying and granulation by agglomeration method. After the particles grow up, they enter the screening system and sieve the 2-4.5mm particles to obtain the finished product. After testing, the particle strength is 18N, and the disintegration time is 40s.
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
涉及一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于按以下步骤进行：在含有硅酸盐的砂状或粉状肥料中，加入增强剂和促崩解剂，形成具有一定强度的肥料颗粒胶体，然后将颗粒筛分，得到成品，其中增强剂的用量占肥料总量的质量百分比为1-20％，促崩解剂的用量占肥料总量的质量百分比为1-20％。在促崩解剂的作用下，当肥料颗粒遇水或进入水中后会迅速膨胀，发生崩解，形成粉体，使得肥料颗粒的养分能被作物吸收利用。该方法省去了传统肥料生产过程中的烘干过程，低碳环保，大幅度降低了产品的生产能耗和成本。利用该方法生产的含硅酸盐砂质肥料具有成本低、肥效高的特点。
Description
本发明属于肥料技术领域，特别涉及一种含硅酸盐砂质肥料的免烘干生产方法。
颗粒肥料的生产方法有高塔造粒、料浆法、团粒法等，除了高塔造粒外，其它工艺生产颗粒肥料都需要进行造粒后的烘干过程，除去颗粒中的水份，使其达到一定颗粒强度。颗粒肥料的烘干需要大量能源，这是颗粒肥料生产中成本的主要组成，若能减少或免去烘干环节，将极大地减少肥料生产过程中的能耗，降低生产成本，提升产品竞争力。
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发明内容
本发明目的在传统颗粒肥料生产工艺的基础上，提供一种含硅酸盐砂质肥料的免烘干生产方法，本方法创造性地加入凝胶材料，使得造粒后肥料颗粒自身具有较高的颗粒强度，免去烘干过程，利用特制崩解剂，解决了颗粒在使用时的崩解问题，这将极大缩短颗粒肥料的生产流程，降低生产成本，提升产品竞争力。
本发明的技术方案为：
一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于按以下步骤进行：在含有硅酸盐的砂状或粉状肥料中，加入增强剂和促崩解剂，形成具有一定强度的肥料颗粒胶体，然后将颗粒筛分，得到成品，其中增强剂的用量占肥料总量的质量百分比为1-20％，促崩解剂的用量占肥料总量的质量百分比为1-20％。在促崩解剂的作用下，当肥料颗粒遇水或进入水中后会迅速膨胀，发生崩解，形成粉体，使得肥料颗粒的养分能被作物吸收利用。
所述的硅酸盐为硅酸钙、硅酸镁、硅酸钠、钙镁磷肥、黄磷渣中的一种或两种以上的混合物。
所述的增强剂由氧化镁与硫酸镁、硫酸镁水合物、氯化镁、氯化镁水合物、石灰石中的一种或两种以上的混合物组合而成。
所述的氧化镁占肥料总量的质量百分比为1％-10％，氧化镁的纯度为10-90％。
所述氧化镁占肥料总量的优选质量百分比为2％-5％。
所述的促崩解剂由黄原胶、糖蜜、纤维素、淀粉与膨润土、蒙脱石、滑石粉中的一种或几种组合而成。
所述黄原胶、糖蜜、纤维素、淀粉一种或几种的组合物占肥料总量的质量百分比为0.1％-20％。
所述黄原胶、糖蜜、纤维素、淀粉一种或几种的组合物占肥料总量的优选质量百分比为2％-10％。
一种含硅酸盐砂质肥料的免烘干生产方法，具体步骤如下：
步骤一：将一定细度的氧化镁粉体与硫酸镁、硫酸镁水合物、氯化镁、氯化镁水合物、石灰石中的一种或两种以上的混合物，按照一定比例加入混合器中，在高速剪切下混合均匀，随后在120℃烘干机中干燥30-60分钟，除去粉体所含水份，即得增强剂；
步骤二：将一定细度的黄原胶与膨润土、蒙脱石、滑石粉、淀粉中的一种或两种以上的混合物在120℃烘干机中烘干30-60分钟，然后按照一定比例加入混合器中，在高速剪切下混合均匀，即得促崩解剂；
步骤三：在含硅酸盐砂质肥料造粒时，按照一定比列依次加入上述增强剂、促崩解剂，经滚动造粒成球，造粒液为水，造粒成球后，湿颗粒在滚动过程中会逐渐增加强度，随后经筛分、包装，即可得到成品。
本发明生产的颗粒含硅酸盐砂质肥料在促崩解剂的作用下，当肥料颗粒遇水或进入水中后会迅速膨胀，发生崩解，形成粉体，使得肥料颗粒的养分能被作物吸收利用。该方法省去了传统肥料生产过程中的烘干过程，低碳环保，大幅度降低了产品的生产能耗和成本。利用该方法生产的含硅酸盐砂质肥料具有成本低、肥效高的特点。
以下通过实施方式以及实验对本发明做具体的说明，但本发明并不限于此。
实施例1
步骤一：以成品含硅酸盐砂质肥料总量为100％，将质量百分比为5％的氧化镁粉体与质量百分比为2％的硫酸镁、质量百分比为3％的氯化镁加入混合器中，在高速剪切下混合均匀，随后在120℃烘干机中干燥30分钟，除去粉体所含水份，即得增强剂；
步骤二：以成品含硅酸盐砂质肥料总量为100％，将质量百分比为2％的黄原胶与质量百分比为10％的膨润土一起在120℃烘干机中烘干30分钟，然后加入混合器中，在高速剪切下混合均匀，即得促崩解剂；
步骤三：将黄磷渣和钙镁磷肥按1:1比例混合的质量百分比为78％硅酸盐的砂质肥料粉碎至100目细度，然后依次加入上述配制好的增强剂、促崩解剂，在混合机中充分混合均匀，随后进入造粒机中进行喷水，进行团粒法造粒，粒子长大后，进入筛分系统，将2-4.5mm粒子筛取，即可得到成品。经检测，粒子颗粒强度为15N，崩解时间为30s。
实施例2
步骤一：以成品含硅酸盐砂质肥料总量为100％，将质量百分比为10％的氧化镁粉体与质量百分比为2％的硫酸镁、质量百分比为3％的石灰石加入混合器中，在高速剪切下混合均匀，随后在120℃烘干机中干燥40分钟，除去粉体所含水份，即得增强剂；
步骤二：以成品含硅酸盐砂质肥料总量为100％，将质量百分比为10％的黄原胶和淀粉与质量百分比为5％的膨润土和5％的滑石粉，一同在120℃烘干机中烘干40分钟，然后加入混合器中，在高速剪切下混合均匀，即得促崩解剂；
步骤三：将黄磷渣和钙镁磷肥按1:1比例混合的质量百分比为65％硅酸盐的砂质肥料粉碎至200目细度，然后依次加入上述配制好的增强剂、促崩解剂，在混合机中充分混合均匀，随后进入造粒机中进行喷水，进行团粒法造粒，粒子长大后，进入筛分系统，将2-4.5mm粒子筛取，即可得到成品。经检测，粒子颗粒强度为18N，崩解时间为40s。
实施例3
步骤一：以成品含硅酸盐砂质肥料总量为100％，将质量百分比为1％的氧化镁粉体加入混合器中，在高速剪切下混合均匀，随后在120℃烘干机干燥60分钟，除去粉体所含水份，即得增强剂；
步骤二：以成品含硅酸盐砂质肥料总量为100％，将质量百分比为0.1％的纤维素与质量百分比为0.9％蒙脱石和滑石粉一起在120℃烘干机中烘干30分钟，然后加入混合器中，在高速剪切下混合均匀，即得促崩解剂；
步骤三：将硅酸钙和钙镁磷肥按1:1比例混合的质量百分比为98％硅酸盐的砂质肥料粉碎至100目细度，然后依次加入上述配制好的增强剂、促崩解剂，在混合机中充分混合均匀，随后进入造粒机中进行喷水，进行团粒法造粒，粒子长大后，进入筛分系统，将2-4.5mm粒子筛取，即可得到成品。经检测，粒子颗粒强度为25N，崩解时间为20s。
实施例4
步骤一：以成品含硅酸盐砂质肥料总量为100％，将质量百分比为2％的氧化镁粉体与质量百分比为2％的硫酸镁、质量百分比为1％的氯化镁水合物加入混合器中，在高速剪切下混合均匀，随后在120℃烘干机中干燥40分钟，除去粉体所含水份，即得增强剂；
步骤二：以成品含硅酸盐砂质肥料总量为100％，将质量百分比为20％的黄原胶在120℃烘干机中烘干60分钟，然后加入混合器中，在高速剪切下混合均匀，即得促崩解剂；
步骤三：将硅酸镁和钙镁磷肥按1:1比例混合的质量百分比为75％硅酸盐的砂质肥料粉碎至150目细度，然后依次加入上述配制好的增强剂、促崩解剂，在混合机中充分混合均匀， 随后进入造粒机中进行喷水，进行团粒法造粒，粒子长大后，进入筛分系统，将2-4.5mm粒子筛取，即可得到成品。经检测，粒子颗粒强度为18N，崩解时间为40s。
Claims (9)
- 一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于按以下步骤进行：在含有硅酸盐的砂状或粉状肥料中，加入增强剂和促崩解剂，形成具有一定强度的肥料颗粒胶体，然后将颗粒筛分，得到成品，其中增强剂的用量占肥料总量的质量百分比为1-20％，促崩解剂的用量占肥料总量的质量百分比为1-20％。
- 如权利要求1所述的一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于：所述的硅酸盐为硅酸钙、硅酸镁、硅酸钠、钙镁磷肥、黄磷渣中的一种或两种以上的混合物。
- 如权利要求1所述的一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于：所述的增强剂由氧化镁与硫酸镁、硫酸镁水合物、氯化镁、氯化镁水合物、石灰石中的一种或两种以上的混合物组合而成。
- 如权利要求3所述的一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于：所述的氧化镁占肥料总量的质量百分比为1％-10％，氧化镁的纯度为10-90％。
- 如权利要求4所述的一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于：所述氧化镁占肥料总量的优选质量百分比为2％-5％。
- 如权利要求1所述的一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于：所述的促崩解剂由黄原胶、糖蜜、纤维素、淀粉中的一种或几种与膨润土、蒙脱石、滑石粉中的一种或几种组成的混合物。
- 如权利要求6所述的一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于：所述黄原胶、糖蜜、纤维素、淀粉的一种或几种组合物占肥料总量的质量百份比为0.1％-20％。
- 如权利要求7所述的一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于：所述黄原胶、糖蜜、纤维素、淀粉一种或几种组合物占肥料总量的优选质量百分比为2％-10％。
- 如权利要求1所述的一种含硅酸盐砂质肥料的免烘干生产方法，其特征在于具体步骤如下：步骤一：将一定细度的氧化镁粉体与硫酸镁、硫酸镁水合物、氯化镁、氯化镁水合物、石灰石中的一种或两种以上的混合物，按照一定比例加入混合器中，在高速剪切下混合均匀，随后在120℃烘干机干燥30-60分钟，除去粉体所含水份，即得增强剂；步骤二：将一定细度的黄原胶、糖蜜、纤维素、淀粉中的一种或几种与膨润土、蒙脱石、滑石粉中的一种或几种组成的混合物，在120℃烘干机中烘干30-60分钟，然后按照一定比例加入混合器中，在高速剪切下混合均匀，即得促崩解剂；步骤三：在含硅酸盐砂质肥料造粒时，按照一定比列依次加入上述增强剂、促崩解剂，经滚动造粒成球，造粒液为水，造粒成球后，湿颗粒在滚动过程中会逐渐增加强度，随后经筛分、包装，即可得到成品。
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| JPH09208350A (ja) * | 1996-01-30 | 1997-08-12 | Urabe Sangyo Kk | けい酸質肥料又はけい酸加里肥料の一粒混合肥料 |
| JP2004182549A (ja) * | 2002-12-05 | 2004-07-02 | Nippon Denko Kk | 粒状肥料及びその製造方法 |
| CN101429080A (zh) * | 2008-12-02 | 2009-05-13 | 黑龙江省沃必达农业科技开发有限公司 | 肥料造粒免烘干方法 |
| CN101844949A (zh) * | 2010-05-31 | 2010-09-29 | 中港泰富(北京)高科技有限公司 | 一种崩解型硅钙镁肥 |
| CN107162800A (zh) * | 2017-07-07 | 2017-09-15 | 烟台固特丽生物科技股份有限公司 | 一种颗粒肥料的免烘干加工方法 |
| CN108046903A (zh) * | 2017-12-08 | 2018-05-18 | 营口菱镁化工集团有限公司 | 一种崩解型含镁颗粒肥料及其制备方法 |
| CN108456050A (zh) * | 2018-01-24 | 2018-08-28 | 天津水泥工业设计研究院有限公司 | 一种低成本的生产圆颗粒矿物肥料的造粒添加剂 |
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