CN111285743A - Citrate soluble granular fertilizer and preparation process thereof - Google Patents
Citrate soluble granular fertilizer and preparation process thereof Download PDFInfo
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- CN111285743A CN111285743A CN202010266587.6A CN202010266587A CN111285743A CN 111285743 A CN111285743 A CN 111285743A CN 202010266587 A CN202010266587 A CN 202010266587A CN 111285743 A CN111285743 A CN 111285743A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
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- 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
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Abstract
The invention discloses a citrate soluble granular fertilizer and a preparation process thereof, belonging to the technical field of agricultural fertilizers. The granular fertilizer is mainly prepared from a disintegrating material and a powdery citrate soluble fertilizer according to the weight ratio of (5-25): (75-95) by weight; the disintegrating material is formed by mixing an inorganic disintegrating material and an organic disintegrating material, the inorganic disintegrating material is a mixture of magnesium sulfate and ammonium sulfate, and the organic disintegrating material is a mixture of amino acid fermentation product, paper pulp and sodium dodecyl sulfate. The citrate soluble granular fertilizer prepared by the invention can avoid environmental pollution and nutrient loss caused by the dispersion of the citrate soluble fertilizer with wind during application, is beneficial to mechanical fertilization, improves the production efficiency, reduces the labor cost, supplements nutrient elements required by plant growth, improves the crop yield, improves the quality of agricultural products, and is suitable for popularization and application.
Description
Technical Field
The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a citrate soluble granular fertilizer and a preparation process thereof.
Background
Mineral fertilizers are generally classified into water-soluble fertilizers and citrate-soluble fertilizers, and citrate-soluble fertilizers are generally insoluble in water but soluble in an aqueous solution of 2% citric acid, and since citric acid is called citric acid in japan, fertilizers soluble in an aqueous solution of 2% citric acid are also called citrate-soluble fertilizers. For example, calcium magnesium phosphate fertilizers produced from phosphate ores by high-temperature melting, potassium calcium silicon magnesium fertilizers produced from potassium ores by high-temperature melting, silicon calcium fertilizers produced from blast furnace water-quenched slag by iron ore smelting, silicon calcium fertilizers produced from yellow phosphorus slag discharged in the process of producing yellow phosphorus by the phosphate ore thermal method, silicon calcium magnesium fertilizers produced from slag by producing magnesium metal by the dolomite Pidgeon method, and the like are mostly applied in the form of fine powder (more than 80 meshes). The granular fertilizer is gradually replaced by granular fertilizer because the granules are very fine and cannot be mechanically fertilized, the spreading is scattered along with wind, the loss is large, the environment is polluted, the labor intensity is high, the requirement of agricultural production cannot be met, and the granular fertilizer is formed into very hard granules after being granulated by water or a binder, so that the granules are more difficult to dissolve in water and cannot be absorbed by plants.
Therefore, a material which can make the fine powdery citrate soluble fertilizer cohere into granules with certain strength, is not easy to crush in the process of storage or transportation, and can make the granular citrate soluble fertilizer quickly disintegrate or disperse when meeting water or tide, namely citrate soluble granular fertilizer disintegrating material, is needed to be selected.
The invention patent CN201610599045.4 discloses a granulation disintegrating agent for producing round-grained mineral fertilizer, wherein the disintegrating material comprises bentonite, attapulgite, and derivatives of acetyl lignin, methyl lignin, halogenated lignin, sulfonated lignin, nitrated lignin, etc. which are respectively obtained after acetylation, methylation, halogenation, sulfonation and nitration of lignin. However, the bentonite and the attapulgite are viscous and insoluble in water, are commonly used as granulating agents of water-soluble compound fertilizers, have the functions of increasing the strength of the compound fertilizers, do not have the function of disintegration, and do not contain nutrient elements required by plant growth; however, although some organic substances are contained in the lignin, such as acetyl lignin, methyl lignin, halogenated lignin, sulfonated lignin, and nitrated lignin, they are hardly soluble in water and hardly absorbed by plants, and are expensive.
The invention patent CN201711335268.0 discloses a disintegrating magnesium-containing granular fertilizer and a preparation method thereof, wherein the used materials comprise brucite powder, dolomite powder, magnesium sulfate monohydrate, magnesium oxide, magnesium carbonate, magnesium chloride and organic acid solution (formic acid, acetic acid, oxalic acid, propionic acid, butyric acid and dimeric aspartic acid). Among inorganic materials, brucite powder, dolomite powder and magnesium oxide are all insoluble in water, magnesium carbonate is slightly soluble in water and is difficult to absorb and utilize by plants, and basically, the brucite powder, dolomite powder and magnesium oxide are ineffective components, magnesium chloride is soluble in water, but the content of chloride ions is high, many plants are contra-chlorinated, and the application is limited; among organic materials, formic acid, acetic acid, oxalic acid, propionic acid, butyric acid and dimeric aspartic acid are ineffective components, cannot be absorbed and utilized by plants, and are high in price.
Therefore, the technical problem to be solved by the technical staff in the field is how to provide a citrate soluble granulated fertilizer which is convenient for mechanical fertilization and contains nutrient elements required by plant growth and has disintegration property and a preparation process thereof.
Disclosure of Invention
In view of the above, the present invention aims to solve the problems in the prior art, and provide a citrate soluble granulated fertilizer with disintegration property, which is convenient for mechanical fertilization, reduces fertilizer loss and environmental pollution, is cheap and easily available, and contains nutrient elements required by plant growth.
In order to achieve the purpose, the invention adopts the following technical scheme:
a citrate soluble granulated fertilizer is mainly prepared from a disintegrating material and a powdery citrate soluble fertilizer according to the proportion of (5-25): (75-95) by weight; the disintegrating material is formed by mixing an inorganic disintegrating material and an organic disintegrating material, the inorganic disintegrating material is a mixture of magnesium sulfate and ammonium sulfate, and the organic disintegrating material is a mixture of amino acid fermentation product, paper pulp and sodium dodecyl sulfate.
Preferably, in the citrate-soluble granulated fertilizer, the mixing weight ratio of the inorganic disintegrating material to the organic disintegrating material is (20-80): (20-80).
Preferably, in the citrate-soluble granulated fertilizer, in the inorganic disintegrating material, the mixing weight ratio of magnesium sulfate to ammonium sulfate is (2-98): (2-98).
Preferably, in the citrate-soluble granulated fertilizer, the organic disintegrating material comprises the following components in a mixing ratio by weight (10-25): (10-30): (45-80).
Preferably, in the citrate-soluble granulated fertilizer, the granularity of the powdery citrate-soluble fertilizer is 70-110 meshes.
The invention specifically limits the granularity of the powdery citrate soluble fertilizer, so that the powdery citrate soluble fertilizer is beneficial to subsequent granulation and easier to form, and is easy to be absorbed by plants after being disintegrated by water or moisture absorption.
The present invention prepares water disintegrable citrate soluble granulated fertilizer with the materials containing a great amount of organic matter, nitrogen as a great amount of nutrient elements, magnesium as a medium amount of nutrient elements and sulfur as basic raw materials and the citrate soluble granulated fertilizer mixed with the powdery citrate soluble fertilizer according to a certain proportion, and has the advantages of short technological process and simple equipment. The prepared citrate soluble granular fertilizer can avoid environmental pollution and nutrient loss caused by the dispersion of the citrate soluble fertilizer along with wind during application, is beneficial to mechanical fertilization, improves the production efficiency, reduces the labor cost, simultaneously supplements organic matters and plant nutrient elements such as nitrogen, magnesium, sulfur and the like, has various effective components, improves the total nutrient content of the product, can obviously improve the soil condition, improves the crop yield and improves the quality of agricultural products.
The invention also aims to provide a preparation process of the citrate soluble granulated fertilizer, which has the advantages of simple and convenient operation and low processing cost and is suitable for popularization and application in the market.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a preparation process of a citrate soluble granular fertilizer specifically comprises the following steps:
(1) respectively weighing inorganic disintegrating material, organic disintegrating material and powdery citrate soluble fertilizer according to the formula ratio for later use;
(2) mixing the raw materials weighed in the step (1), granulating and drying until the water content is less than or equal to 2% to obtain a citrate soluble granulated fertilizer;
(3) and (3) screening the citrate soluble granulated fertilizer obtained in the step (2) to obtain fertilizers with different particle sizes, and then packaging and sealing to obtain the citrate soluble granulated fertilizer which can be disintegrated and dispersed in water.
Preferably, in the step (3), the particle size of the screened fertilizer is 2-6 mm.
According to the technical scheme, compared with the prior art, the citrate soluble granular fertilizer and the preparation process thereof provided by the invention have the following excellent effects:
(1) the citrate soluble granular fertilizer is prepared by adopting an inorganic disintegrating material and an organic disintegrating material containing a large amount of medium nutrient elements such as nitrogen, magnesium, sulfur and the like and an organic matter and simultaneously adding the disintegrating material into a powdery citrate soluble fertilizer, and has the characteristics of uniform and smooth granules, high strength (more than or equal to 10N, and more than or equal to 8N according to the national standard), high disintegration speed (the citrate soluble granular fertilizer can be disintegrated when meeting water, and the complete disintegration time is 0.5-5 minutes according to different materials), high disintegration rate (the fertilizer can be disintegrated to 100 percent) and the like.
(2) The preparation process is simple and convenient to operate and low in cost, the product contains inherent plant nutrient elements of the citrate soluble fertilizer, also supplements organic matters and a large amount of medium nutrient elements such as nitrogen, magnesium, sulfur and the like, increases the varieties of active ingredients of the product, improves the total nutrient content of the product, can provide more plant growth elements, can obviously improve soil conditions, better promotes the photosynthesis and nutrient absorption of plants, regulates the growth of the plants, promotes the capability of enhancing the resistance of the plants to adverse factors, improves the yield of crops and improves the quality of agricultural products.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a preparation process of a citrate soluble granular fertilizer.
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.
The embodiment of the invention discloses a citrate soluble granular fertilizer which is convenient for mechanical fertilization, contains various nutrient elements required by plant growth and has disintegration property and a preparation process thereof.
The present invention will be further specifically illustrated by the following examples for better understanding, but the present invention is not to be construed as being limited thereto, and certain insubstantial modifications and adaptations of the invention by those skilled in the art based on the foregoing disclosure are intended to be included within the scope of the invention.
Example 1
The preparation process of the citrate soluble granulated fertilizer provided by the embodiment 1 of the invention comprises the following steps:
(1) respectively carrying out crushing pretreatment on inorganic disintegrating materials magnesium sulfate and ammonium sulfate used as binders and organic disintegrating materials amino acid fermentation products, paper pulp, sodium dodecyl sulfate and citrate soluble fertilizer, wherein the granularity of the magnesium sulfate, the ammonium sulfate, the amino acid fermentation products, the paper pulp, the sodium dodecyl sulfate and the citrate soluble fertilizer which are subjected to crushing pretreatment is larger than or equal to 70 meshes;
(2) inorganic disintegrating materials of magnesium sulfate and ammonium sulfate are mixed according to the weight ratio of 2: 98 to obtain an inorganic disintegrating material mixture;
(3) mixing an organic disintegrating material amino acid fermentation product, paper pulp and sodium dodecyl sulfate according to a weight ratio of 10:10:80 to obtain an organic disintegrating material mixture;
(4) mixing inorganic disintegrating material and organic disintegrating material according to the weight ratio of 20: 80 to obtain a disintegrating material mixture;
(5) weighing the disintegrating material mixture and the powdery citrate soluble fertilizer according to the weight ratio of 5:95, and stirring and mixing to obtain mixed powder;
(6) placing the mixed powder into a granulator, and spraying water for granulation to obtain a granular mixture with high water content;
(7) drying the granular mixture with higher water content in a dryer until the water content is less than or equal to 2 percent to obtain a dry granular mixture;
(8) screening the dried granular mixture for granularity; and respectively packaging and sealing the screened granular mixtures with different granularities to obtain the finished product of the citrate soluble granular fertilizer which can be disintegrated and dispersed in water.
Wherein, the particle diameter of the granular mixture screened in the embodiment 1 is 2mm, and the screened granular mixture is packaged and sealed by 10 kg/bag to obtain the finished product.
Examples 2 to 5 disclose the preparation process of the citrate soluble granulated fertilizer provided in example 1, which has different process parameters as shown in the following table 1:
| example 2 | Example 3 | Example 4 | Example 5 | |
| Raw material crushing granularity (mesh) | 80 | 90 | 100 | 110 |
| Raw material proportion of inorganic disintegrating material | 15:85 | 30:70 | 50:50 | 98:2 |
| Raw material proportion of organic disintegrating material | 15:20:65 | 18:20:62 | 20:25：55 | 25:30:45 |
| The inorganic disintegrating material and the organic disintegrating material are proportioned | 25:75 | 50:50 | 70:30 | 80:20 |
| The ratio of disintegrating material to powdery citrate-soluble fertilizer | 10:90 | 15:85 | 20:80 | 25:75 |
| Particle size (mm) of screened granulated fertilizer | 3 | 4 | 5 | 6 |
| Packing sealing specification (kg/bag) | 20 | 25 | 40 | 50 |
To further verify that the citrate-soluble granulated fertilizer prepared by the invention has excellent technical effects, the inventors also carried out the following performance measurement experiments.
Experiment 1:
example 1-example 5 disclose experimental data for determining technical properties of a citrate soluble granulated fertilizer provided:
the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The citrate-soluble granulated fertilizer is characterized by mainly comprising a disintegrating material and a powdery citrate-soluble fertilizer according to the weight ratio of (5-25): (75-95) by weight; the disintegrating material is formed by mixing an inorganic disintegrating material and an organic disintegrating material, the inorganic disintegrating material is a mixture of magnesium sulfate and ammonium sulfate, and the organic disintegrating material is a mixture of amino acid fermentation product, paper pulp and sodium dodecyl sulfate.
2. The citrate-soluble granulated fertilizer according to claim 1, wherein the mixing weight ratio of the inorganic disintegrating material to the organic disintegrating material is (20-80): (20-80).
3. The citrate-soluble granulated fertilizer according to claim 1 or 2, wherein the inorganic disintegrating material comprises magnesium sulfate and ammonium sulfate in a mixing ratio by weight of (2-98): (2-98).
4. The citrate-soluble granulated fertilizer according to claim 1 or 2, wherein the organic disintegrating material comprises amino acid fermentation product, paper pulp and sodium dodecyl sulfate in a mixing ratio by weight of (10-25): (10-30): (45-80).
5. The citrate soluble granulated fertilizer according to claim 1 or 2, wherein the granularity of the powdery citrate soluble fertilizer is 70-110 meshes.
6. The preparation process of the citrate-soluble granulated fertilizer as claimed in any one of claims 1 to 5, wherein the process specifically comprises the following steps:
(1) respectively weighing inorganic disintegrating material, organic disintegrating material and powdery citrate soluble fertilizer according to the formula ratio for later use;
(2) mixing the raw materials weighed in the step (1), granulating and drying until the water content is less than or equal to 2% to obtain a citrate soluble granulated fertilizer;
(3) and (3) screening the citrate soluble granulated fertilizer obtained in the step (2) to obtain fertilizers with different particle sizes, and then packaging and sealing to obtain the citrate soluble granulated fertilizer which can be disintegrated and dispersed in water.
7. The preparation process of the citrate soluble granulated fertilizer as claimed in claim 6, wherein in the step (3), the grain size of the screened fertilizer is 2-6 mm.
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| CN202010266587.6A CN111285743A (en) | 2020-04-07 | 2020-04-07 | Citrate soluble granular fertilizer and preparation process thereof |
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| CN202010266587.6A CN111285743A (en) | 2020-04-07 | 2020-04-07 | Citrate soluble granular fertilizer and preparation process thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785914A (en) * | 2005-11-02 | 2006-06-14 | 大连爱思凯矿产有限公司 | Brucite granular fertilizer and its preparation method |
| CN101462906A (en) * | 2008-12-29 | 2009-06-24 | 深圳市芭田生态工程股份有限公司 | Cracking compound fertilizer, production method thereof and additive |
| CN102557809A (en) * | 2012-03-09 | 2012-07-11 | 广东亿兆生物科技有限公司 | Method for preparing organic-inorganic potassium-calcium-silicon compound fertilizer |
| CN104725165A (en) * | 2013-12-24 | 2015-06-24 | 青岛鑫润土苗木专业合作社 | Moisture-proof high-disintegration rate citric acid-soluble fertilizer |
| CN110372419A (en) * | 2019-08-29 | 2019-10-25 | 山东和生海洋科技有限公司 | Blend ammonium magnesium phosphate particle and preparation method thereof that is not stratified and meeting water disintegratable |
-
2020
- 2020-04-07 CN CN202010266587.6A patent/CN111285743A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785914A (en) * | 2005-11-02 | 2006-06-14 | 大连爱思凯矿产有限公司 | Brucite granular fertilizer and its preparation method |
| CN101462906A (en) * | 2008-12-29 | 2009-06-24 | 深圳市芭田生态工程股份有限公司 | Cracking compound fertilizer, production method thereof and additive |
| CN102557809A (en) * | 2012-03-09 | 2012-07-11 | 广东亿兆生物科技有限公司 | Method for preparing organic-inorganic potassium-calcium-silicon compound fertilizer |
| CN104725165A (en) * | 2013-12-24 | 2015-06-24 | 青岛鑫润土苗木专业合作社 | Moisture-proof high-disintegration rate citric acid-soluble fertilizer |
| CN110372419A (en) * | 2019-08-29 | 2019-10-25 | 山东和生海洋科技有限公司 | Blend ammonium magnesium phosphate particle and preparation method thereof that is not stratified and meeting water disintegratable |
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