CN110563506A - Preparation of anti-caking agent for fertilizer rich in rare earth elements - Google Patents
Preparation of anti-caking agent for fertilizer rich in rare earth elements Download PDFInfo
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- CN110563506A CN110563506A CN201910886935.7A CN201910886935A CN110563506A CN 110563506 A CN110563506 A CN 110563506A CN 201910886935 A CN201910886935 A CN 201910886935A CN 110563506 A CN110563506 A CN 110563506A
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- caking
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
- C05D9/02—Other inorganic fertilisers containing trace elements
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- Inorganic Chemistry (AREA)
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Abstract
the invention discloses a preparation method of a rare earth element-rich fertilizer anti-caking agent, which comprises the following steps of anti-caking agent raw material preparation, anti-caking agent raw material heating, addition of other raw materials to prepare the anti-caking agent, fertilizer raw material preparation, fertilizer raw material heating and obtaining caking rate data. The invention relates to a preparation of a rare earth element-rich fertilizer anticaking agent, which is characterized in that renewable resources such as castor oil and the like are selected to replace mineral oil, and trace rare earth elements are added in the preparation process, so that the obtained anticaking agent is low in cost and environment-friendly, meanwhile, the rare earth elements can improve the chlorophyll content of plants, enhance photosynthesis, promote root development, increase nutrient absorption of roots, promote seed germination, improve seed germination rate and promote seedling growth.
Description
Technical Field
The invention relates to the technical field of fertilizer manufacturing, in particular to a preparation method of a fertilizer anti-caking agent rich in rare earth elements.
background
in China, chemical fertilizers are used as agricultural necessities in large quantities every year. With the modernization of Chinese agriculture, the requirements of the people on chemical fertilizers are increasingly increased, and the requirements are mainly reflected on resource utilization and environmental protection. At present, the fertilizer still has a plurality of problems in agricultural production, the utilization rate of the fertilizer is low, the fertilizer is easy to agglomerate, the fertilizer has single functionality and the like. The caking factors of the fertilizer are many, the internal factors are water which is divided into crystal water and free water, and the water can promote the particles to form crystal bridges and the fertilizer to be dissolved and recrystallized; the external factor is mainly the storage environment, including storage pressure, ambient temperature, ambient humidity etc. storage pressure can make fertilizer granule warp, breakage, has increased granule area of contact, easily forms the crystal bridge and makes the fertilizer caking, and fertilizer has certain hygroscopicity, and compound fertilizer hygroscopicity is stronger, and ambient temperature risees simultaneously and can make each composition reactivity reinforcing lead to the emergence of recrystallization to the caking.
The anti-caking agent is mainly divided into an internal anti-caking agent and an external anti-caking agent, wherein the internal anti-caking agent is added in the production process of the fertilizer to change the crystal form and improve the hardness of the fertilizer, formaldehyde, gypsum and ammonium sulfate are commonly used for improving the hardness, and calcium nitrate, magnesium nitrate and the like are used for preventing caking. The external anti-caking agent is generally inert powder with adsorption effect, does not react with the fertilizer, and forms a protective film on the surface of the fertilizer, and mainly comprises clay, talcum, diatomite and some nonionic surfactants.
therefore, the important function of the anti-caking agent in the fertilizer can be known, most of the existing anti-caking agents are oil-soluble anti-caking agents, a large amount of mineral oil is required for preparation, the resource consumption is high, the environment can be greatly polluted, and the existing anti-caking agents have single functions and can not meet the growth requirements of crops. Therefore, the research on the preparation method of a suitable anti-caking agent is an urgent research subject, and the preparation of the anti-caking agent for the fertilizer rich in the rare earth elements is brought about.
disclosure of Invention
the invention solves the technical problems of single function, high manufacturing cost, small environmental pollution and the like in the prior art, and provides the preparation of the anti-caking agent for the fertilizer rich in the rare earth elements. The preparation of the anti-caking agent for the fertilizer rich in the rare earth elements has the characteristics of various functions, low manufacturing cost, small environmental pollution and the like.
In order to achieve the purpose, the invention provides the following technical scheme:
the preparation method of the anti-caking agent for the fertilizer rich in the rare earth elements comprises the following steps:
Step 1: preparing an anti-caking agent raw material, namely weighing 50-70 parts of castor oil, 0.5-1 part of potassium stearate, 4-8 parts of octadecyl primary amine and 2-8 parts of lanthanide rare earth according to the following material ratio;
step 2: heating the anticaking agent raw material, namely placing the raw material castor oil in a reaction kettle, and heating to 75 ℃;
and step 3: adding other raw materials, and adding primary octadecyl amine, potassium stearate and lanthanide rare earth into a reaction kettle;
And 4, step 4: preparing an anti-caking agent, continuously heating the reaction to 90 ℃, and uniformly stirring to obtain the anti-caking agent;
and 5: preparing a fertilizer raw material, namely weighing 1000g of fertilizer particles with the diameter of 2-5 mm;
step 6: heating the fertilizer raw materials, placing the raw materials in a reaction kettle, and stirring and heating to 50 ℃;
and 7: and (3) obtaining caking rate data, and then weighing 1.5-3 g of the anti-caking agent to be uniformly sprayed on the fertilizer for fertilizer accelerated caking experiment to obtain the caking rate.
preferably, in the step 7, the determination of the caking rate data is to perform caking on the treated fertilizer, after the caking is completed, different pressures are applied to extrude for 10-15 min, then the device is placed into a high-low temperature test box, the temperature in the daytime is 55 ℃, the humidity is 60%, the temperature is reduced to room temperature and the ambient humidity at night, after one week, the sample is taken out and falls down from the high position of 1m forward and backward, and the caking rate is obtained by using a standard sieve after unpacking.
preferably, in step 2, the anti-caking agent raw material is heated while stirring at the time of temperature rise.
Preferably, in step 3, when other raw materials are added, the order of addition is to add primary octadecylamine, then add potassium stearate, and finally add lanthanide rare earth.
Preferably, in the step 4, the stirring time is 2-3 h.
compared with the prior art, the invention has the beneficial effects that:
The invention relates to a preparation of a rare earth element-rich fertilizer anticaking agent, which is characterized in that renewable resources such as castor oil and the like are selected to replace mineral oil, and trace rare earth elements are added in the preparation process, so that the obtained anticaking agent is low in cost and environment-friendly, meanwhile, the rare earth elements can improve the chlorophyll content of plants, enhance photosynthesis, promote root development, increase nutrient absorption of roots, promote seed germination, improve seed germination rate and promote seedling growth.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to fig. 1, the present invention provides a technical solution:
the preparation method of the anti-caking agent for the fertilizer rich in the rare earth elements comprises the following steps:
Step 1: preparing anticaking agent raw materials, namely weighing 20g of castor oil, 0.5g of potassium stearate, 2g of primary octadecyl amine and 2g of lanthanide rare earth according to the mixture ratio;
Step 2: heating the anticaking agent raw material, namely placing the raw material castor oil in a reaction kettle, heating to 75 ℃, and stirring and heating the anticaking agent raw material while heating;
And step 3: adding other raw materials, namely adding primary octadecyl amine, potassium stearate and lanthanide rare earth into a reaction kettle, wherein when the other raw materials are added, the adding sequence is to firstly add the primary octadecyl amine, then add the potassium stearate and finally add the lanthanide rare earth;
And 4, step 4: preparing an anti-caking agent, continuously heating the reaction to 90 ℃, and uniformly stirring for 2-3 hours;
And 5: preparing a fertilizer raw material, namely weighing 1000g of fertilizer particles with the diameter of 2-5 mm;
step 6: heating the fertilizer raw materials, placing the raw materials in a reaction kettle, and stirring and heating to 50 ℃;
And 7: obtaining caking rate data, then weighing 2g of the anti-caking agent, uniformly spraying the anti-caking agent on the fertilizer, performing a fertilizer accelerated caking experiment, obtaining the caking rate, determining the caking rate data, namely caking the treated fertilizer, applying different pressures to extrude for 10-15 min after caking is completed, then placing the device into a high-low temperature test box, wherein the temperature in the daytime is 55 ℃, the humidity is 60%, cooling to room temperature and ambient humidity at night, taking out a sample, respectively dropping the sample from the high part of 1m forward and backward once after one week, and using a standard sieve after unpacking to obtain the caking rate, wherein the caking rate of the embodiment is 15%.
Experimental data:
| Name of raw materials | raw material ratio |
| castor oil | 20g |
| Potassium stearate | 0.5g |
| Octadecyl Primary amine | 2g |
| Lanthanide rare earths | 2g |
Example 2:
referring to fig. 1, the present invention provides a technical solution:
the preparation method of the anti-caking agent for the fertilizer rich in the rare earth elements comprises the following steps:
Step 1: preparing anticaking agent raw materials, namely weighing 30g of castor oil, 0.5g of potassium stearate, 2g of primary octadecyl amine and 2g of lanthanide rare earth according to the mixture ratio;
step 2: heating the anticaking agent raw material, namely placing the raw material castor oil in a reaction kettle, heating to 75 ℃, and stirring and heating the anticaking agent raw material while heating;
and step 3: adding other raw materials, namely adding primary octadecyl amine, potassium stearate and lanthanide rare earth into a reaction kettle, wherein when the other raw materials are added, the adding sequence is to firstly add the primary octadecyl amine, then add the potassium stearate and finally add the lanthanide rare earth;
And 4, step 4: preparing an anti-caking agent, continuously heating the reaction to 90 ℃, and uniformly stirring for 2-3 hours;
and 5: preparing a fertilizer raw material, namely weighing 1000g of fertilizer particles with the diameter of 2-5 mm;
Step 6: heating the fertilizer raw materials, placing the raw materials in a reaction kettle, and stirring and heating to 50 ℃;
And 7: obtaining caking rate data, then weighing 2g of the anti-caking agent, uniformly spraying the anti-caking agent on the fertilizer, performing a fertilizer accelerated caking experiment, obtaining the caking rate, determining the caking rate data, namely caking the treated fertilizer, applying different pressures to extrude for 10-15 min after caking is completed, then placing the device into a high-low temperature test box, wherein the temperature in the daytime is 55 ℃, the humidity is 60%, cooling to room temperature and ambient humidity at night, taking out a sample, respectively dropping the sample from the high part of 1m forward and backward once after one week, and using a standard sieve after unpacking to obtain the caking rate, wherein the caking rate of the embodiment is 12%.
experimental data:
| Name of raw materials | raw material ratio |
| Castor oil | 30g |
| potassium stearate | 0.5g |
| octadecyl Primary amine | 2g |
| lanthanide rare earths | 2g |
example 3:
Referring to fig. 1, the present invention provides a technical solution:
the preparation method of the anti-caking agent for the fertilizer rich in the rare earth elements comprises the following steps:
Step 1: preparing anticaking agent raw materials, namely weighing 20g of castor oil, 0.5g of potassium stearate, 2g of primary octadecyl amine and 2g of lanthanide rare earth according to the mixture ratio;
step 2: heating the anticaking agent raw material, namely placing the raw material castor oil in a reaction kettle, heating to 75 ℃, and stirring and heating the anticaking agent raw material while heating;
and step 3: adding other raw materials, namely adding primary octadecyl amine, potassium stearate and lanthanide rare earth into a reaction kettle, wherein when the other raw materials are added, the adding sequence is to firstly add the primary octadecyl amine, then add the potassium stearate and finally add the lanthanide rare earth;
And 4, step 4: preparing an anti-caking agent, continuously heating the reaction to 90 ℃, and uniformly stirring for 2-3 hours;
and 5: preparing a fertilizer raw material, namely weighing 1000g of fertilizer particles with the diameter of 2-5 mm;
Step 6: heating the fertilizer raw materials, placing the raw materials in a reaction kettle, and stirring and heating to 50 ℃;
And 7: obtaining caking rate data, then weighing 3g of the anti-caking agent, uniformly spraying the anti-caking agent on the fertilizer, performing a fertilizer accelerated caking experiment, obtaining the caking rate, determining the caking rate data, namely caking the treated fertilizer, applying different pressures to extrude for 10-15 min after caking is completed, then placing the device into a high-low temperature test box, wherein the temperature in the daytime is 55 ℃, the humidity is 60%, cooling to room temperature and ambient humidity at night, taking out a sample, respectively dropping the sample from the high part of 1m forward and backward once after one week, and using a standard sieve after unpacking to obtain the caking rate, wherein the caking rate of the embodiment is 7%.
Experimental data:
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. the preparation method of the anti-caking agent for the fertilizer rich in the rare earth elements is characterized by comprising the following steps of:
step 1: preparing an anti-caking agent raw material, namely weighing 50-70 parts of castor oil, 0.5-1 part of potassium stearate, 4-8 parts of octadecyl primary amine and 2-8 parts of lanthanide rare earth according to the following material ratio;
step 2: heating the anticaking agent raw material, namely placing the raw material castor oil in a reaction kettle, and heating to 75 ℃;
And step 3: adding other raw materials, and adding primary octadecyl amine, potassium stearate and lanthanide rare earth into a reaction kettle;
and 4, step 4: preparing an anti-caking agent, continuously heating the reaction to 90 ℃, and uniformly stirring to obtain the anti-caking agent;
and 5: preparing a fertilizer raw material, namely weighing 1000g of fertilizer particles with the diameter of 2-5 mm;
step 6: heating the fertilizer raw materials, placing the raw materials in a reaction kettle, and stirring and heating to 50 ℃;
And 7: and (3) obtaining caking rate data, and then weighing 1.5-3 g of the anti-caking agent to be uniformly sprayed on the fertilizer for fertilizer accelerated caking experiment to obtain the caking rate.
2. The preparation method of the rare earth element-rich fertilizer anti-caking agent according to claim 1, which is characterized in that: in the step 7, caking rate data is determined by caking the treated fertilizer, applying different pressures to extrude for 10-15 min after caking is completed, then placing the device into a high-low temperature test chamber, wherein the temperature is 55 ℃ in the daytime, the humidity is 60%, cooling to room temperature and ambient humidity at night, taking out a sample, respectively throwing the sample from the high position of 1m forward and backward once after one week, unpacking and then using a standard sieve to obtain the caking rate.
3. The preparation method of the rare earth element-rich fertilizer anti-caking agent according to claim 1, which is characterized in that: and 2, heating the anticaking agent raw material while stirring when heating.
4. the preparation method of the rare earth element-rich fertilizer anti-caking agent according to claim 1, which is characterized in that: in the step 3, when other raw materials are added, the adding sequence is that firstly octadecyl primary amine is added, then potassium stearate is added, and finally lanthanide rare earth is added.
5. the preparation method of the rare earth element-rich fertilizer anti-caking agent according to claim 1, which is characterized in that: in the step 4, the stirring time is 2-3 h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113999073A (en) * | 2021-11-08 | 2022-02-01 | 山西华鑫肥业股份有限公司 | Anti-caking process for nitro compound fertilizer |
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