WO2022222355A1 - Calcium magnesium phosphate fertilizer granulating agent and application thereof - Google Patents
Calcium magnesium phosphate fertilizer granulating agent and application thereof Download PDFInfo
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- WO2022222355A1 WO2022222355A1 PCT/CN2021/119224 CN2021119224W WO2022222355A1 WO 2022222355 A1 WO2022222355 A1 WO 2022222355A1 CN 2021119224 W CN2021119224 W CN 2021119224W WO 2022222355 A1 WO2022222355 A1 WO 2022222355A1
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- WIPO (PCT)
- Prior art keywords
- phosphate fertilizer
- calcium
- magnesium phosphate
- magnesium
- calcium magnesium
- Prior art date
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 88
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 title claims abstract description 84
- 239000003979 granulating agent Substances 0.000 title abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 29
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 229920002472 Starch Polymers 0.000 claims abstract description 15
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical group C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000004021 humic acid Substances 0.000 claims abstract description 13
- 235000019698 starch Nutrition 0.000 claims abstract description 12
- 239000008107 starch Substances 0.000 claims abstract description 12
- 229920001353 Dextrin Polymers 0.000 claims abstract description 11
- 239000004375 Dextrin Substances 0.000 claims abstract description 11
- 235000019425 dextrin Nutrition 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000007605 air drying Methods 0.000 claims abstract description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 14
- 239000011591 potassium Substances 0.000 claims description 14
- 229910052700 potassium Inorganic materials 0.000 claims description 14
- 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 8
- 239000011734 sodium Substances 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- 229920002261 Corn starch Polymers 0.000 claims description 4
- 229920000858 Cyclodextrin Polymers 0.000 claims description 4
- 229920002774 Maltodextrin Polymers 0.000 claims description 4
- 239000005913 Maltodextrin Substances 0.000 claims description 4
- 239000008120 corn starch Substances 0.000 claims description 4
- 229940035034 maltodextrin Drugs 0.000 claims description 4
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims description 4
- 244000068988 Glycine max Species 0.000 claims description 3
- 235000010469 Glycine max Nutrition 0.000 claims description 3
- 229920000881 Modified starch Polymers 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 229940100445 wheat starch Drugs 0.000 claims description 3
- 239000004368 Modified starch Substances 0.000 claims description 2
- 235000019426 modified starch Nutrition 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 34
- 238000005469 granulation Methods 0.000 abstract description 24
- 230000003179 granulation Effects 0.000 abstract description 24
- 238000012216 screening Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 14
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 8
- 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 5
- 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 5
- 239000002509 fulvic acid Substances 0.000 description 5
- 229940095100 fulvic acid Drugs 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 4
- 235000019341 magnesium sulphate Nutrition 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002686 phosphate fertilizer Substances 0.000 description 3
- 239000002367 phosphate rock Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 235000013379 molasses Nutrition 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C05G3/80—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
Definitions
- the invention relates to the field of agricultural science and technology, in particular to a calcium-magnesium-phosphate fertilizer granulator and its application.
- Calcium-magnesium phosphate fertilizer also known as molten magnesium-containing phosphate fertilizer, is a raw material prepared by phosphate rock and magnesium silicate mineral, melted in an electric furnace, blast furnace or open hearth, and the melt is quenched with water to form a vitreous material with a particle size of less than 2mm, which is dried. After grinding it becomes a product.
- calcium magnesium phosphate fertilizer as a medium and low content phosphate fertilizer, has a good application prospect.
- fertilizers have formed product types based on round granular fertilizers and liquid fertilizers. Powdered calcium-magnesium-phosphate fertilizers are unfavorable in terms of convenience and versatility of use, limiting the application of calcium-magnesium-phosphate fertilizers. scope.
- the vitreous structure of calcium magnesium phosphate fertilizer determines that the material does not have any viscosity, so it is very difficult to granulate calcium magnesium phosphate fertilizer into balls, and it is even more difficult to achieve high granulation yield and large-scale production.
- CN110724006A discloses a drying-free calcium-magnesium-phosphate fertilizer granulator for the production of granular calcium-magnesium-phosphate fertilizer and its application.
- the waste produced by the production of magnesium sulfate is piled up for 12-24 hours.
- -10% powdered calcium oxide is mixed evenly, and the pH value of the material is adjusted to 6-7, so as to avoid drying the calcium magnesium phosphate fertilizer granulator.
- CN1176882C of the patent discloses a granular calcium-magnesium phosphate fertilizer.
- the present invention adds a mixed magnesium sulfate solution to the calcium-magnesium phosphate fertilizer, and prepares it into a granular shape, so that it is easy to dissolve in contact with water after application, and the effective components are easy to release, and the crops Fast absorption, easy to use, long-lasting fertilizer effect.
- the added amount of magnesium sulfate is small, and the original composition ratio and structure of calcium magnesium phosphate fertilizer are not changed.
- CN110803959A discloses a special granulating agent for producing round granular calcium magnesium phosphate fertilizer and its application.
- the granulating agent is composed of molasses fermentation liquid, corn starch and magnesium sulfate.
- the granulating agent is composed of molasses fermentation liquid, corn starch and magnesium sulfate.
- the purpose of the present invention is to provide a calcium-magnesium-phosphate fertilizer granulator used in combination with a powdery and liquid granulator and its application.
- the calcium-magnesium-phosphate fertilizer powder is easy to be granulated into balls, and then the liquid granulating agent is sprayed to the surface of the calcium-magnesium-phosphate fertilizer powder to form a ball, and the purpose of granulation is achieved.
- the granulation yield is as high as 95%, and the wet strength of the particles is good ( Generally, the wet strength of particles after granulation is 0), which solves the problems of difficult granulation of calcium magnesium phosphate fertilizer, low yield and low particle strength.
- a calcium-magnesium-phosphate fertilizer granulator characterized in that: it is composed of powder and liquid, wherein the powder is one or a mixture of the two in starch and dextrin, and the liquid is a humic acid solution.
- the starch is one or a mixture of two or more of corn starch, soybean starch, wheat starch and modified starch.
- the dextrin is one of maltodextrin and cyclodextrin or a mixture of the two.
- the mass concentration of the humic acid solution is 1%-50%.
- the humic acid solution is one or a mixture of two or more of potassium humate, sodium humate and potassium humate.
- An application of a calcium magnesium phosphate fertilizer granulator characterized in that: when the calcium magnesium phosphate fertilizer is granulated, one or a mixture of the starch and dextrin in the powder is mixed with the calcium magnesium phosphate fertilizer and then ground for 10-30 minutes to reach The purpose of powder modification of calcium magnesium phosphate fertilizer, then adding liquid humic acid solution for granulation, air-drying/drying, sieving to obtain round particle calcium magnesium phosphate fertilizer; wherein one or both of starch and dextrin are The dosage of the mixture is 1-20% of the mass of the calcium magnesium phosphate fertilizer, and the dosage of the liquid part of the humic acid is 0.5-5% of the mass of the total powder after grinding.
- the powder is mixed with the calcium-magnesium-phosphate fertilizer, and the surface of the calcium-magnesium-phosphate fertilizer powder is modified, so that the calcium-magnesium-phosphate fertilizer powder can be easily granulated into balls, and then a liquid granulating agent is sprayed on the surface of the calcium-magnesium-phosphate fertilizer powder to adhere to form a ball. It can achieve the purpose of granulation and solve the problem of difficult granulation of calcium magnesium phosphate fertilizer.
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
Disclosed in the present invention are a calcium magnesium phosphate fertilizer granulating agent and an application thereof. The calcium magnesium phosphate fertilizer granulating agent is composed of a powder part and a liquid part; the powder part is one or a mixture of starch and dextrin; and the liquid part is a humic acid solution. During granulation of a calcium magnesium phosphate fertilizer, one or a mixture of powdery starch and dextrin and the calcium magnesium phosphate fertilizer are mixed and then ground for 10-30 min, thereby achieving the purpose of modifying the calcium magnesium phosphate fertilizer powder; and then, a liquid humic acid solution is added for granulation, and a round-particle calcium magnesium phosphate fertilizer is obtained by means of air-drying/drying and screening, wherein the dosage of one or a mixture of the starch and the dextrin is 1-20% of the mass of the calcium magnesium phosphate fertilizer, and the dosage of the humic acid in the liquid part is 0.5-5% of the mass of the total powder after being ground. According to the present invention, the surface of the calcium magnesium phosphate fertilizer powder is modified by mixing the powder and the calcium magnesium phosphate fertilizer, such that the calcium magnesium phosphate fertilizer powder is easily granulated into a ball, and then a liquid granulating agent is sprayed to the surface of the calcium magnesium phosphate fertilizer powder and adheres to the surface of the calcium magnesium phosphate fertilizer powder to form a ball, to achieve the purpose of granulation, thereby solving the problem of difficult granulation of the calcium magnesium phosphate fertilizer.
Description
本发明涉及农业科学技术领域，尤其是涉及一种钙镁磷肥造粒剂及其应用。The invention relates to the field of agricultural science and technology, in particular to a calcium-magnesium-phosphate fertilizer granulator and its application.
钙镁磷肥又称熔融含镁磷肥，是通过将磷矿与硅酸镁矿物配制的原料，在电炉、高炉或平炉中熔融,熔体用水骤冷,形成粒度小于2mm的玻璃质物料,经干燥磨细后成为产品。在高品位磷矿资源日益匮乏的今天，钙镁磷肥作为一种中低含量磷肥，具有良好的应用前景。然而，肥料经过几十年的发展，已经形成了以圆颗粒肥料和液体肥料为主的产品型式，粉状钙镁磷肥在使用的便利性和通用性上都不利，限制了钙镁磷肥的应用范围。Calcium-magnesium phosphate fertilizer, also known as molten magnesium-containing phosphate fertilizer, is a raw material prepared by phosphate rock and magnesium silicate mineral, melted in an electric furnace, blast furnace or open hearth, and the melt is quenched with water to form a vitreous material with a particle size of less than 2mm, which is dried. After grinding it becomes a product. In today's increasingly scarce high-grade phosphate rock resources, calcium magnesium phosphate fertilizer, as a medium and low content phosphate fertilizer, has a good application prospect. However, after decades of development, fertilizers have formed product types based on round granular fertilizers and liquid fertilizers. Powdered calcium-magnesium-phosphate fertilizers are unfavorable in terms of convenience and versatility of use, limiting the application of calcium-magnesium-phosphate fertilizers. scope.
钙镁磷肥的玻璃体结构决定了其物料没有任何粘性，因此要将钙镁磷肥造粒成球十分困难，要实现造粒高成品率、进行规模化生产则更是难上加难。国内外关于圆颗粒钙镁磷肥研究和生产的专利极少。The vitreous structure of calcium magnesium phosphate fertilizer determines that the material does not have any viscosity, so it is very difficult to granulate calcium magnesium phosphate fertilizer into balls, and it is even more difficult to achieve high granulation yield and large-scale production. There are very few patents at home and abroad on the research and production of round granular calcium magnesium phosphate fertilizers.
CN110724006A公开了一种生产颗粒钙镁磷肥用的免烘干钙镁磷肥造粒剂及应用，将生产硫酸镁所产生的废料堆放12-24h，发酵腐熟后，控制含水量≤5％，加入5-10％粉状氧化钙混合均匀，调节物料pH值至6-7，即得免烘干钙镁磷肥造粒剂。生产颗粒钙镁磷肥时，将占粉状钙镁磷肥5-20％的免烘干钙镁磷肥造粒剂加入粉状钙镁磷肥中一起造粒，得到粒径2-4mm的圆颗粒钙镁磷肥，将钙镁磷肥颗粒在温度15－35℃、空气湿度≤50％的环境中放置6-8h，得到颗粒强度≥30N的圆颗粒钙镁磷肥。该专利的CN1176882C公开了一种颗粒状钙镁磷肥，本发明于钙镁磷肥中加入混合硫酸镁溶液，将其制备成颗粒状，使得在施用后与水接触易溶解，有效成份易释放，作物吸收快，使用方便，肥效持久。所添加的硫酸镁添加量少，不改变钙镁磷肥原来的成份比例和结构。CN110803959A公开了一种生产圆颗粒钙镁磷肥的专用造粒剂及用途，该造粒剂由糖蜜发酵液、玉米淀粉、硫酸镁复合而成，在生产圆颗粒钙镁磷肥造粒时，加入占粉状钙镁磷肥总量的5-10％造粒剂，再对粉状钙镁磷肥进行造粒成球，解决了钙镁磷肥造粒时成球困难、造粒后强度不高和放置后颗粒强度下降、颗粒崩解缓慢的问题，所得产品的颗粒强度≥50N，崩解时间2-10s。CN110724006A discloses a drying-free calcium-magnesium-phosphate fertilizer granulator for the production of granular calcium-magnesium-phosphate fertilizer and its application. The waste produced by the production of magnesium sulfate is piled up for 12-24 hours. -10% powdered calcium oxide is mixed evenly, and the pH value of the material is adjusted to 6-7, so as to avoid drying the calcium magnesium phosphate fertilizer granulator. When producing granular calcium-magnesium phosphate fertilizer, add the powdered calcium-magnesium-phosphate fertilizer granulating agent, which accounts for 5-20% of the powdered calcium-magnesium-phosphate fertilizer, into the powdered calcium-magnesium-phosphate fertilizer and granulate together to obtain round particles of calcium-magnesium phosphate fertilizer with a particle size of 2-4mm. Phosphate fertilizer, place calcium magnesium phosphate fertilizer granules in an environment with a temperature of 15-35°C and an air humidity of ≤50% for 6-8 hours to obtain a round particle calcium-magnesium phosphate fertilizer with a particle strength of ≥30N. CN1176882C of the patent discloses a granular calcium-magnesium phosphate fertilizer. The present invention adds a mixed magnesium sulfate solution to the calcium-magnesium phosphate fertilizer, and prepares it into a granular shape, so that it is easy to dissolve in contact with water after application, and the effective components are easy to release, and the crops Fast absorption, easy to use, long-lasting fertilizer effect. The added amount of magnesium sulfate is small, and the original composition ratio and structure of calcium magnesium phosphate fertilizer are not changed. CN110803959A discloses a special granulating agent for producing round granular calcium magnesium phosphate fertilizer and its application. The granulating agent is composed of molasses fermentation liquid, corn starch and magnesium sulfate. When producing round granular calcium magnesium phosphate fertilizer granulation, adding 5-10% of the total amount of powdered calcium-magnesium phosphate fertilizer is granulated, and then the powdered calcium-magnesium-phosphate fertilizer is granulated into balls, which solves the difficulty of granulating calcium-magnesium phosphate fertilizer, the low strength after granulation and the The particle strength decreases and the particles disintegrate slowly. The particle strength of the obtained product is ≥50N, and the disintegration time is 2-10s.
以上专利通过不同的添加物达到了颗粒钙镁磷肥的制造问题，但在实际生产过程中，造粒所得成品率低、颗粒湿强度差不耐烘干是制约圆颗粒钙镁磷肥工业化生产产能提升和控制产品成本的关键因素。The above patents have achieved the manufacturing problem of granular calcium magnesium phosphate fertilizer through different additives. However, in the actual production process, the low yield of granulated products, poor wet strength of granules, and poor drying resistance restrict the increase in the industrial production capacity of round granular calcium magnesium phosphate fertilizer. and key factors in controlling product cost.
发明内容SUMMARY OF THE INVENTION
本发明的目的提供一种粉状与液体状造粒剂联合使用的钙镁磷肥造粒剂及其应用，通过粉体与钙镁磷肥混合，将钙镁磷肥粉体表面改性的目的，使钙镁磷肥粉体容易造粒成球，随后喷洒液体造粒剂至钙镁磷肥粉体表面，粘附成球，达到造粒的目的，造粒成品率高达95％，且颗粒湿强度好(一般造粒后粒子湿强度为0)，解决了钙镁磷肥造粒困难、产量不高和颗粒强度低的问题。The purpose of the present invention is to provide a calcium-magnesium-phosphate fertilizer granulator used in combination with a powdery and liquid granulator and its application. The calcium-magnesium-phosphate fertilizer powder is easy to be granulated into balls, and then the liquid granulating agent is sprayed to the surface of the calcium-magnesium-phosphate fertilizer powder to form a ball, and the purpose of granulation is achieved. The granulation yield is as high as 95%, and the wet strength of the particles is good ( Generally, the wet strength of particles after granulation is 0), which solves the problems of difficult granulation of calcium magnesium phosphate fertilizer, low yield and low particle strength.
本发明的技术方案为：The technical scheme of the present invention is:
一种钙镁磷肥造粒剂，其特征在于:由粉体和液体两部分组成，粉体部分为淀粉、糊精中一种或二者的混合物，液体部分为腐殖酸溶液。A calcium-magnesium-phosphate fertilizer granulator, characterized in that: it is composed of powder and liquid, wherein the powder is one or a mixture of the two in starch and dextrin, and the liquid is a humic acid solution.
所述淀粉为玉米淀粉、大豆淀粉、小麦淀粉、改性淀粉中的一种或二种以上的混合物。The starch is one or a mixture of two or more of corn starch, soybean starch, wheat starch and modified starch.
所述糊精为麦芽糊精、环糊精中一种或二者的混合物。The dextrin is one of maltodextrin and cyclodextrin or a mixture of the two.
所述腐殖酸溶液的质量浓度为1％-50％。The mass concentration of the humic acid solution is 1%-50%.
所述腐殖酸溶液为黄腐酸钾、腐殖酸钠、腐殖酸钾中的一种或二种以上的混合物。The humic acid solution is one or a mixture of two or more of potassium humate, sodium humate and potassium humate.
一种钙镁磷肥造粒剂的应用，其特征在于：钙镁磷肥造粒时，将粉体的淀粉、糊精中一种或二者的混合物与钙镁磷肥混合后研磨10-30min，达到钙镁磷肥粉体改性的目的，然后加入液体的腐殖酸溶液造粒，经风干/烘干、筛分，得到圆颗粒钙镁磷肥；其中所述淀粉、糊精中一种或二者的混合物的用量为钙镁磷肥质量的1-20％，液体部分腐殖酸的用量为研磨后总粉体质量的0.5-5％。An application of a calcium magnesium phosphate fertilizer granulator, characterized in that: when the calcium magnesium phosphate fertilizer is granulated, one or a mixture of the starch and dextrin in the powder is mixed with the calcium magnesium phosphate fertilizer and then ground for 10-30 minutes to reach The purpose of powder modification of calcium magnesium phosphate fertilizer, then adding liquid humic acid solution for granulation, air-drying/drying, sieving to obtain round particle calcium magnesium phosphate fertilizer; wherein one or both of starch and dextrin are The dosage of the mixture is 1-20% of the mass of the calcium magnesium phosphate fertilizer, and the dosage of the liquid part of the humic acid is 0.5-5% of the mass of the total powder after grinding.
本发明通过粉体与钙镁磷肥混合，将钙镁磷肥粉体表面改性，使钙镁磷肥粉体容易造粒成球，随后喷洒液体造粒剂至钙镁磷肥粉体表面，粘附成球，达到造粒的目的，解决了钙镁磷肥造粒困难的问题。In the invention, the powder is mixed with the calcium-magnesium-phosphate fertilizer, and the surface of the calcium-magnesium-phosphate fertilizer powder is modified, so that the calcium-magnesium-phosphate fertilizer powder can be easily granulated into balls, and then a liquid granulating agent is sprayed on the surface of the calcium-magnesium-phosphate fertilizer powder to adhere to form a ball. It can achieve the purpose of granulation and solve the problem of difficult granulation of calcium magnesium phosphate fertilizer.
结合实施例对本发明作进一步描述，本发明的原料直接购买。The present invention is further described with reference to the examples, and the raw materials of the present invention are directly purchased.
实施例一Example 1
将5份玉米淀粉、5份环糊精、90份钙镁磷肥混合均匀，在粉碎机中进行研磨30min改性，达到一定细度后，将研磨后的粉体转入圆盘造粒机中，将5份黄腐酸钾配成质量浓度为5％的黄腐酸钾溶液，喷洒黄腐酸钾溶液进行造粒，造粒成品率高达95％，粒子湿强度为5N，经烘干、筛分，即可得到圆颗粒钙镁磷肥。所得圆颗粒钙镁磷肥颗粒强度≥30N，粒子圆润，成品率高达95％。Mix 5 parts of corn starch, 5 parts of cyclodextrin, and 90 parts of calcium magnesium phosphate fertilizer evenly, and grind it in a pulverizer for 30 minutes to modify it. After reaching a certain fineness, transfer the ground powder into a disc granulator. , make 5 parts of potassium fulvic acid into a potassium fulvic acid solution with a mass concentration of 5%, spray the potassium fulvic acid solution for granulation, the granulation yield is as high as 95%, and the wet strength of the particles is 5N. After sieving, round particle calcium magnesium phosphate fertilizer can be obtained. The obtained round particles of calcium magnesium phosphate fertilizer particles have a strength of ≥30N, round particles, and a yield of up to 95%.
实施例二Embodiment 2
将5份小麦淀粉、5份麦芽糊精、90份钙镁磷肥混合均匀，在球磨机中进行研磨10min改性，达到一定细度后，将研磨后的粉体转入转鼓造粒机中，将0.5份腐殖酸钠配成质量浓度为30％的腐殖酸钠溶液，喷洒腐殖酸钠溶液进行造粒，造粒成品率高达95％，粒子湿强度为5.2N，经烘干、筛分，即可得到圆颗粒钙镁磷肥。所得圆颗粒钙镁磷肥颗粒强度≥40N，粒子圆润，成品率高达95％。Mix 5 parts of wheat starch, 5 parts of maltodextrin, and 90 parts of calcium-magnesium-phosphate fertilizer evenly, and grind them in a ball mill for 10 minutes for modification. After reaching a certain fineness, transfer the ground powder into a drum granulator. Mix 0.5 part of sodium humate into a sodium humate solution with a mass concentration of 30%, spray the sodium humate solution for granulation, the granulation yield is as high as 95%, and the wet strength of the particles is 5.2N. After sieving, round particle calcium magnesium phosphate fertilizer can be obtained. The obtained round particle calcium magnesium phosphate fertilizer particle strength is ≥40N, the particle is round, and the yield is as high as 95%.
实施例三Embodiment 3
将8份大豆淀粉、12份环糊精、100份钙镁磷肥混合均匀，在雷蒙磨中进行研磨20min改性，达到一定细度后，将研磨后的粉体转入圆盘造粒机中，将1.2份腐殖酸钾配成质量浓度为10％的腐殖酸钾溶液，喷洒腐殖酸钾溶液进行造粒，造粒成品率高达95％，粒子湿强度为5.8N，经烘干、筛分，即可得到圆颗粒钙镁磷肥。所得圆颗粒钙镁磷肥颗粒强度≥35N，粒子圆润，成品率高达90％。Mix 8 parts of soybean starch, 12 parts of cyclodextrin, and 100 parts of calcium-magnesium-phosphate fertilizer evenly, and grind them in a Raymond mill for 20 minutes for modification. After reaching a certain fineness, transfer the ground powder to a disc granulator. 1.2 parts of potassium humate were prepared into potassium humate solution with a mass concentration of 10%, and the potassium humate solution was sprayed for granulation. The granulation yield was as high as 95%, and the wet strength of the particles was 5.8N. After drying and sieving, round granular calcium magnesium phosphate fertilizer can be obtained. The obtained round-grain calcium-magnesium-phosphate fertilizer has a strength of ≥35N, rounded particles, and a yield of up to 90%.
实施例四Embodiment 4
将1份改性玉米淀粉、100份钙镁磷肥混合均匀，在粉碎机中进行研磨20min改性，达到一定细度后，将研磨后的粉体转入圆盘造粒机中，将1份黄腐酸钾、1份腐殖酸钾均配成质量浓度为1％的溶液，喷洒黄腐酸钾和腐殖酸钾混合溶液进行造粒，造粒成品率高达95％，粒子湿强度为6N，经烘干、筛分，即可得到圆颗粒钙镁磷肥。所得圆颗粒钙镁磷肥颗粒强度≥30N，粒子圆润，成品率高达95％。Mix 1 part of modified corn starch and 100 parts of calcium magnesium phosphate fertilizer evenly, and grind them in a pulverizer for 20 minutes for modification. After reaching a certain fineness, transfer the ground powder into a disc granulator, and 1 Potassium fulvic acid and 1 part of potassium humate are all formulated into a solution with a mass concentration of 1%, and the mixed solution of potassium fulvic acid and potassium humate is sprayed for granulation. The granulation yield is as high as 95%, and the wet strength of the particles is 6N, after drying and sieving, round particle calcium magnesium phosphate fertilizer can be obtained. The obtained round particles of calcium magnesium phosphate fertilizer particles have a strength of ≥30N, round particles, and a yield of up to 95%.
实施例五Embodiment 5
将10份麦芽糊精、100份钙镁磷肥混合均匀，在球磨机中进行研磨30min改性，达到一定细度后，将研磨后的粉体转入转鼓造粒机中，将3份腐殖酸钠配成质量浓度为50％的腐殖酸钠溶液，喷洒腐殖酸钠溶液进行造粒，造粒成品率高达95％，粒子湿强度为6.5N，经烘干、筛分，即可得到圆颗粒钙镁磷肥。所得圆颗粒钙镁磷肥颗粒强度≥40N，粒子圆润，成品率高达95％。Mix 10 parts of maltodextrin and 100 parts of calcium-magnesium-phosphate fertilizer evenly, and grind them in a ball mill for 30 minutes for modification. The sodium humate is prepared into a sodium humate solution with a mass concentration of 50%, and the sodium humate solution is sprayed for granulation. The granulation yield is as high as 95%, and the wet strength of the particles is 6.5N. After drying and screening, Obtain round granular calcium magnesium phosphate fertilizer. The obtained round particle calcium magnesium phosphate fertilizer particle strength is ≥40N, the particle is round, and the yield is as high as 95%.
Claims (6)
- 一种钙镁磷肥造粒剂，其特征在于:由粉体和液体两部分组成，粉体部分为淀粉、糊精中一种或二者的混合物，液体部分为腐殖酸溶液。A calcium-magnesium-phosphate fertilizer granulator, characterized in that: it is composed of powder and liquid, wherein the powder is one or a mixture of the two in starch and dextrin, and the liquid is a humic acid solution.
- 根据权利要求1所述的一种钙镁磷肥造粒剂，其特征在于：所述淀粉为玉米淀粉、大豆淀粉、小麦淀粉、改性淀粉中的一种或二种以上的混合物。A calcium-magnesium-phosphate fertilizer granulator according to claim 1, wherein the starch is one or more mixtures of corn starch, soybean starch, wheat starch and modified starch.
- 根据权利要求1所述的一种钙镁磷肥造粒剂，其特征在于：所述糊精为麦芽糊精、环糊精中一种或二者的混合物。A calcium-magnesium-phosphate fertilizer granulator according to claim 1, wherein the dextrin is one of maltodextrin and cyclodextrin or a mixture of the two.
- 根据权利要求1所述的一种钙镁磷肥造粒剂，其特征在于：所述腐殖酸溶液的质量浓度为1％-50％。A calcium-magnesium-phosphate fertilizer granulator according to claim 1, characterized in that: the mass concentration of the humic acid solution is 1%-50%.
- 根据权利要求4所述的一种钙镁磷肥造粒剂，其特征在于：所述腐殖酸溶液为黄腐酸钾、腐殖酸钠、腐殖酸钾中的一种或二种以上的混合物。A calcium-magnesium-phosphate fertilizer granulator according to claim 4, wherein the humic acid solution is one or more of potassium humate, sodium humate and potassium humate. mixture.
- 根据权利要求1-5之一所述的一种钙镁磷肥造粒剂的应用，其特征在于：钙镁磷肥造粒时，将粉体的淀粉、糊精中一种或二者的混合物与钙镁磷肥混合后研磨10-30min，达到钙镁磷肥粉体改性的目的，然后加入液体的腐殖酸溶液造粒，经风干/烘干、筛分，得到圆颗粒钙镁磷肥；其中所述淀粉、糊精中一种或二者的混合物的用量为钙镁磷肥质量的1-20％，液体部分腐殖酸的用量为研磨后总粉体质量的0.5-5％。The application of a kind of calcium magnesium phosphate fertilizer granulator according to one of claims 1-5, it is characterized in that: when calcium magnesium phosphate fertilizer is granulated, one or the mixture of the two in starch, dextrin of powder is mixed with The calcium-magnesium phosphate fertilizer is mixed and ground for 10-30 minutes to achieve the purpose of modifying the calcium-magnesium-phosphate fertilizer powder, and then adding liquid humic acid solution to granulate, air-drying/drying and sieving to obtain round-granule calcium-magnesium phosphate fertilizer; The dosage of one or the mixture of starch and dextrin is 1-20% of the mass of calcium magnesium phosphate fertilizer, and the dosage of the liquid part of humic acid is 0.5-5% of the mass of the total powder after grinding.
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| CN113773140A (en) * | 2021-09-23 | 2021-12-10 | 湖北富邦科技股份有限公司 | Easy-to-disintegrate calcium magnesium phosphate fertilizer and preparation method thereof |
| CN114605138A (en) * | 2022-03-01 | 2022-06-10 | 郑州大学 | Powdery phosphate rock forming method for producing calcium magnesium phosphate fertilizer |
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