CN117586068A - Formula, production process and application method of one-step compound fertilizer anti-caking agent - Google Patents
Formula, production process and application method of one-step compound fertilizer anti-caking agent Download PDFInfo
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- CN117586068A CN117586068A CN202311463791.7A CN202311463791A CN117586068A CN 117586068 A CN117586068 A CN 117586068A CN 202311463791 A CN202311463791 A CN 202311463791A CN 117586068 A CN117586068 A CN 117586068A
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- compound fertilizer
- caking
- caking agent
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 87
- 150000001875 compounds Chemical class 0.000 title claims abstract description 78
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title abstract description 28
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000000694 effects Effects 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 12
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 12
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 10
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 239000012986 chain transfer agent Substances 0.000 claims description 3
- -1 cyclic azo amidines Chemical class 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 15
- 239000000654 additive Substances 0.000 abstract description 2
- 238000005469 granulation Methods 0.000 abstract description 2
- 230000003179 granulation Effects 0.000 abstract description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 239000001692 EU approved anti-caking agent Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 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 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/30—Anti-agglomerating additives; Anti-solidifying additives
-
- 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
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a formula, a production process and a use method of a one-step compound fertilizer anti-caking agent, and belongs to the technical field of fertilizer additives. Comprises the following components in percentage by mass: 77 to 87 percent of acrylic polymer with low polymerization degree, 8.8 to 16 percent of sodium polyacrylate with medium molecular weight, 1.7 to 3.7 percent of weak alkaline penetrating agent and 2.5 to 3.8 percent of glycol. The anti-caking agent for the compound fertilizer can be more stably and firmly attached to the surfaces of the compound fertilizer particles, so that adjacent compound fertilizer particles are less prone to caking, the anti-caking effect of the compound fertilizer is greatly improved, the combination process with the compound fertilizer can be effectively accelerated, the granulation efficiency is improved, and the production cost is greatly reduced.
Description
Technical Field
The invention relates to a formula, a production process and a use method of a one-step compound fertilizer anti-caking agent, and belongs to the technical field of fertilizer additives.
Background
The compound fertilizer integrates multiple nutritional ingredients into a whole, and plays a very important role in the fertilizer industry, and is a powdery, granular, crystalline and spherical chemical fertilizer, when the external conditions such as temperature, humidity, compressive strength and the like are changed, the compound fertilizer is extremely easy to agglomerate and becomes hard and hard to break into agglomerates, so that great inconvenience is brought to the packaging, transportation, storage, batching, application and the like of the fertilizer, and even great economic loss is caused. After the fertilizer is agglomerated, the normal flowing state of the product is destroyed, and the fertilizer is often required to be crushed before application, so that waste and pollution are caused, and the cost is directly increased. There is also a risk of explosion for some explosive and flammable products, such as ammonium nitrate, potassium nitrate, etc. Thus, anti-caking of chemical fertilizers has attracted considerable attention.
At present, the process of granulating, drying, coating and the like is usually required to produce the anti-caking compound fertilizer on the market, and the anti-caking agent such as sodium stearate, calcium stearate, talcum powder, anionic surfactant and the like which are commonly used on the market is required to be added in the coating process to produce the compound fertilizer with the anti-caking effect.
However, the existing anti-caking agent has poor effect, and the production process and the process combined with the compound fertilizer are complex, so that the production efficiency is greatly reduced.
There is therefore a need to propose a new solution to this problem.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the formula, the production process and the using method of the one-step compound fertilizer anti-caking agent are provided, and the problems that the existing anti-caking agent in the prior art is poor in effect, and the production process and the process combined with the compound fertilizer are complex, so that the production efficiency is greatly reduced are solved.
The technical problems to be solved by the invention are realized by adopting the following technical scheme: the formula of the anti-caking agent for the compound fertilizer by a one-step method comprises the following components in percentage by mass:
77 to 87 percent of acrylic polymer with low polymerization degree,
8.8 to 16 percent of sodium polyacrylate with medium molecular weight,
1.7 to 3.7 percent of weak alkaline penetrating agent,
2.5 to 3.8 percent of ethylene glycol.
Through adopting above-mentioned technical scheme for this compound fertilizer anti-caking agent can be more stable firm adhere to compound fertilizer granule surface, thereby make be difficult for caking more between the adjacent compound fertilizer granule, improved compound fertilizer's anti-caking effect greatly, and can effectively accelerate the bonding process with compound fertilizer, improve granulation efficiency, thereby greatly reduced manufacturing cost.
The production process of the compound fertilizer anti-caking agent by a one-step method is used for producing the compound fertilizer anti-caking agent, and comprises the following steps:
firstly, quantitatively adding acrylic acid, sodium hydroxide and water into a reaction kettle, and controlling the pH value of liquid in the reaction kettle to be between 5.5 and 6.5;
step two, adding an initiator into a reaction kettle: persulfates, cyclic azo amidines, anticrosslinking agents: cerium nitrate, chain transfer agent: polymerizing urea, controlling the reaction temperature to be not more than 80 ℃ and the reaction time to be 6 hours to obtain a finished product of milky viscous liquid;
and thirdly, detecting, packaging and warehousing.
By adopting the technical scheme, the anti-caking agent is simple to produce and high in production efficiency, so that the cost of the anti-caking agent is effectively reduced, and the yield of the anti-caking agent is improved.
The application method of the compound fertilizer anti-caking agent based on the compound fertilizer anti-caking agent provided by the above method comprises the following steps:
step one, in the process of granulating the compound fertilizer, mixing an anti-caking agent and hot water into a roller granulator in a spraying manner for granulating to obtain compound fertilizer granules with an anti-caking effect, wherein the proportion of the anti-caking agent in one part of compound fertilizer is 0.15% -0.4% based on the dry basis proportion of the compound fertilizer.
By adopting the technical scheme, the anti-caking agent can be easily doped into the compound fertilizer by only one step, the operation is simple, the production time of a compound fertilizer finished product is greatly reduced, and the production efficiency is greatly improved.
The beneficial effects of the invention are as follows: the anti-caking agent for the compound fertilizer can be more stably and firmly attached to the surfaces of the compound fertilizer particles, so that adjacent compound fertilizer particles are less prone to caking, the anti-caking effect of the compound fertilizer is greatly improved, the combination process with the compound fertilizer can be effectively accelerated, the granulating efficiency is improved, and the production cost is greatly reduced.
Drawings
FIG. 1 is a flow chart of the production process of the present invention.
Detailed Description
The invention will be further described with reference to the following detailed drawings, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
The formula of the anti-caking agent for the compound fertilizer by a one-step method comprises the following components in percentage by mass:
77 to 87 percent of acrylic polymer with low polymerization degree,
8.8 to 16 percent of sodium polyacrylate with medium molecular weight,
1.7 to 3.7 percent of weak alkaline penetrating agent,
2.5 to 3.8 percent of ethylene glycol.
The anti-caking agent for the compound fertilizer can be more stably and firmly attached to the surfaces of the compound fertilizer particles, so that adjacent compound fertilizer particles are less prone to caking, the anti-caking effect of the compound fertilizer is greatly improved, the combination process with the compound fertilizer can be effectively accelerated, the granulating efficiency is improved, and the production cost is greatly reduced.
Specifically, the acrylic acid polymer has the characteristics of high adhesive strength and quick action, so that the combination with the compound fertilizer is quickened, the sodium polyacrylate can effectively improve the adhesive force of the anti-caking agent, so that the anti-caking agent can be more firmly combined with the compound fertilizer, and the weak alkaline penetrating agent can promote the penetration of the anti-caking agent in the compound fertilizer, so that the combination efficiency with the compound fertilizer is improved.
Embodiment one:
the formula of the anti-caking agent for the compound fertilizer by a one-step method comprises the following components in percentage by mass:
77% of acrylic polymer with low polymerization degree,
medium molecular weight sodium polyacrylate 16%,
3.2 percent of weak alkaline penetrating agent,
3.8% of ethylene glycol.
Embodiment two:
the formula of the anti-caking agent for the compound fertilizer by a one-step method comprises the following components in percentage by mass:
79.5% of low-polymerization acrylic polymer,
13.5 percent of sodium polyacrylate with medium molecular weight,
3.7 percent of weak alkaline penetrating agent,
3.3% of ethylene glycol.
Embodiment III:
the formula of the anti-caking agent for the compound fertilizer by a one-step method comprises the following components in percentage by mass:
low polymerization degree acrylic polymer 82%,
11% of sodium polyacrylate with medium molecular weight,
3.4 percent of weak alkaline penetrating agent,
3.6% of ethylene glycol.
Embodiment four:
the formula of the anti-caking agent for the compound fertilizer by a one-step method comprises the following components in percentage by mass:
84.5% of low-polymerization acrylic polymer,
9.5 percent of sodium polyacrylate with medium molecular weight,
2.4 percent of weak alkaline penetrating agent,
3.6% of ethylene glycol.
Fifth embodiment:
the formula of the anti-caking agent for the compound fertilizer by a one-step method comprises the following components in percentage by mass:
87% of acrylic polymer with low polymerization degree,
8.8 percent of sodium polyacrylate with medium molecular weight,
1.7 percent of weak alkaline penetrating agent,
ethylene glycol 2.5%.
As shown in fig. 1, the production process of the one-step compound fertilizer anti-caking agent is used for the compound fertilizer anti-caking agent, and comprises the following steps:
step one, quantitatively adding acrylic acid, sodium hydroxide and water into a reaction kettle, controlling the pH value of liquid in the reaction kettle to be between 5.5 and 6.5,
wherein the water is drinking water, and is purified by a quartz sand filter and an activated carbon filter in reverse osmosis process, and then added into a reaction kettle, in addition, sodium hydroxide which is neutralized with acrylic acid is prepared by adopting an ion exchange membrane method to electrolyze saline water,
step two, adding an initiator into a reaction kettle: persulfates, cyclic azo amidines, anticrosslinking agents: cerium nitrate, chain transfer agent: polymerizing a plurality of mixtures by urea, controlling the reaction temperature to be not more than 80 ℃ and the reaction time to be 6 hours to obtain a finished product of milky viscous liquid, namely a liquid anti-caking agent;
and thirdly, detecting, packaging and warehousing.
By adopting the process, the anti-caking agent has simple production and higher production efficiency, thereby effectively reducing the cost of the anti-caking agent and improving the yield of the anti-caking agent.
The application method of the compound fertilizer anti-caking agent based on the compound fertilizer anti-caking agent provided by the above method comprises the following steps:
step one, in the process of granulating the compound fertilizer, mixing an anti-caking agent and hot water at 90 ℃ into a roller granulator in a spraying manner for granulating, so as to obtain compound fertilizer granules with an anti-caking effect, wherein the proportion of the anti-caking agent in one part of compound fertilizer is 0.15% -0.4% based on the dry basis proportion of the compound fertilizer.
The anti-caking agent can be easily mixed into the compound fertilizer by only one step, the operation is simple, the production time of the compound fertilizer finished product is greatly reduced, and the production efficiency is greatly improved.
The detection method comprises the following steps:
1. the anti-caking agent of the invention, which is prepared according to the fifth proportion of the embodiment, is respectively mixed into five parts of compound fertilizer with the same mass according to the proportion of 0.25%, and is prepared into uniformly mixed finished product particles according to the production process of the application, then the finished product particles of the embodiment are respectively packed into one hundred parts of bagged finished products with the same volume mass at the same time, and the finished products are compacted after air is discharged;
2. the bagged finished products of the compound fertilizers with the mixture ratios of the anti-caking agents from the first embodiment to the fifth embodiment are respectively vertically lifted to heights of 0.25m, 0.5m, 0.75m, 1m and 1.5m from the horizontal ground by a crane, the bagged finished products with the mixture ratios from the first embodiment are respectively and freely dropped twenty times at each height, the caking condition of the compacted finished product particles in the bagged finished products is observed and recorded, and the final average value is obtained as follows:
| examples/height | 0.25m | 0.5m | 0.75m | 1m | 1.5m |
| Example 1 | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking |
| Example two | 3/4 caking | 1/2 caking | 1/4 caking | Are all free from caking | Are all free from caking |
| Example III | 1/2 caking | 1/4 caking | Are all free from caking | Are all free from caking | Are all free from caking |
| Example IV | 1/4 caking | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking |
| Example five | Agglomeration | 3/4 caking | 1/2 caking | 1/4 caking | Are all free from caking |
The anti-caking agent prepared by 77% of the acrylic polymer with low polymerization degree, 16% of the sodium polyacrylate with medium molecular weight, 3.2% of the weakly alkaline penetrating agent and 3.8% of the ethylene glycol is not agglomerated at any height when acting on compound fertilizer particles, so that the anti-caking agent has an excellent anti-caking effect.
3. The anti-caking agent in the first proportion is taken to be respectively mixed into six parts of compound fertilizer with the same mass according to the proportion of 0.15%, 0.2%, 0.25%, 0.3%, 0.35% and 0.4%, and prepared into uniformly mixed finished product particles according to the production process of the application, and then the finished product particles mixed with the proportions are respectively packed into one hundred twenty parts of bagged finished products with the same volume mass at the same time, and the finished product particles are compacted after being discharged from air;
4. and (3) vertically lifting each packed and compacted composite fertilizer bagged finished product to heights of 0.25m, 0.5m, 0.75m, 1m and 1.5m from the horizontal ground by a crane, freely dropping each packed finished product with a doping proportion for twenty times at each height, observing and recording the caking condition of the compacted finished product particles in the packed finished product, and finally taking the average value as follows:
| ratio/height | 0.25m | 0.5m | 0.75m | 1m | 1.5m |
| 0.15％ | Agglomeration | Agglomeration | 1/2 caking | 1/4 caking | Are all free from caking |
| 0.2％ | 1/2 caking | 1/4 caking | Are all free from caking | Are all free from caking | Are all free from caking |
| 0.25％ | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking |
| 0.3％ | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking |
| 0.35％ | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking |
| 0.4％ | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking | Are all free from caking |
Therefore, the anti-caking capability of the compound fertilizer particles can be effectively improved by doping at least 0.25% of anti-caking agent into the compound fertilizer with the same quality, but the production cost can be effectively reduced by selecting 0.25% of anti-caking agent due to good anti-caking effect after doping at least 0.25% of anti-caking agent.
In summary, when at least 0.25% of the anti-caking agent is mixed in one part of the compound fertilizer, and the proportion of the anti-caking agent is 77% of the low-polymerization-degree acrylic acid polymer, 16% of the medium-molecular-weight sodium polyacrylate, 3.2% of the weak alkaline penetrating agent and 3.8% of the ethylene glycol, the compound fertilizer waste produced by adopting the production process has excellent anti-caking capability, reduces the production cost and improves the economic benefit.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but is capable of various changes and modifications without departing from the spirit and scope of the invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The formula of the anti-caking agent for the compound fertilizer by a one-step method is characterized by comprising the following components in percentage by mass:
77 to 87 percent of acrylic polymer with low polymerization degree,
8.8 to 16 percent of sodium polyacrylate with medium molecular weight,
1.7 to 3.7 percent of weak alkaline penetrating agent,
2.5 to 3.8 percent of ethylene glycol.
2. A process for producing a compound fertilizer anti-caking agent according to claim 1, comprising the steps of:
firstly, quantitatively adding acrylic acid, sodium hydroxide and water into a reaction kettle, and controlling the pH value of liquid in the reaction kettle to be between 5.5 and 6.5;
step two, adding an initiator into a reaction kettle: persulfates, cyclic azo amidines, anticrosslinking agents: cerium nitrate, chain transfer agent: polymerizing urea, controlling the reaction temperature to be not more than 80 ℃ and the reaction time to be 6 hours to obtain a finished product of milky viscous liquid;
and thirdly, detecting, packaging and warehousing.
3. The application method of the compound fertilizer anti-caking agent based on the compound fertilizer anti-caking agent provided in claim 1 is characterized by comprising the following steps:
step one, in the process of granulating the compound fertilizer, mixing an anti-caking agent and hot water into a roller granulator in a spraying manner for granulating to obtain compound fertilizer granules with an anti-caking effect, wherein the proportion of the anti-caking agent in one part of compound fertilizer is 0.15% -0.4% based on the dry basis proportion of the compound fertilizer.
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| CN202311463791.7A CN117586068A (en) | 2023-11-06 | 2023-11-06 | Formula, production process and application method of one-step compound fertilizer anti-caking agent |
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| CN202311463791.7A CN117586068A (en) | 2023-11-06 | 2023-11-06 | Formula, production process and application method of one-step compound fertilizer anti-caking agent |
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| WO2023209761A1 (en) * | 2022-04-25 | 2023-11-02 | 花王株式会社 | Anti-caking agent composition for fertilizer |
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2023
- 2023-11-06 CN CN202311463791.7A patent/CN117586068A/en active Pending
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| CN102786358A (en) * | 2012-08-29 | 2012-11-21 | 湖北富邦科技股份有限公司 | Water-soluble anti-caking agent and preparation method thereof |
| CN106748287A (en) * | 2017-02-08 | 2017-05-31 | 武汉铂莱材料科技有限公司 | A kind of aqueous fertiliser anticaking agent and preparation method thereof |
| WO2023209761A1 (en) * | 2022-04-25 | 2023-11-02 | 花王株式会社 | Anti-caking agent composition for fertilizer |
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