CN104446677A - Granulated magnesium sulfate fertilizer and preparation method thereof - Google Patents
Granulated magnesium sulfate fertilizer and preparation method thereof Download PDFInfo
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- CN104446677A CN104446677A CN201410723940.3A CN201410723940A CN104446677A CN 104446677 A CN104446677 A CN 104446677A CN 201410723940 A CN201410723940 A CN 201410723940A CN 104446677 A CN104446677 A CN 104446677A
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- magnesium sulfate
- powdery
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- magnesium
- sulfate fertilizer
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D5/00—Fertilisers containing magnesium
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Abstract
The invention relates to a granulated magnesium sulfate fertilizer and a preparation method thereof. The granulated magnesium sulfate fertilizer is prepared from 70-95 parts of powdery magnesium sulfate monohydrate, 0-25 parts of powdery light calcined magnesia and 5-10 parts of powdery magnesite. The preparation method of the granulated magnesium sulfate fertilizer comprises the following steps: (1) mixing materials, namely adding the raw materials to a double shaft agitator for agitation; (2) preparing a binder; (3) pelleting, namely putting the dry materials obtained in the step (1) into an aggregate type pelletizer, and adding the binder in the step (2) to obtain a granular material; (4) drying; (5) cooling; (6) sieving, namely feeding the cooled material to a vibrating screening machine to obtain the fertilizer having the grain size of 2-4mm. The granulated magnesium sulfate fertilizer has the following beneficial effects that the granule strength is moderate, the cost is low, each granule contains magnesium in three forms, namely water-soluble magnesium, citric acid-soluble magnesium and slightly soluble magnesium, and the nutrients are released reasonably in a balanced manner and advantageous for crops to absorb.
Description
Technical field
The invention belongs to agricultural fertilizer field, relate to a kind of fertilizer, particularly relate to a kind of particle magnesium sulfate fertilizer and preparation method thereof.
Background technology
Magnesium is the necessary nutritive element of plant-growth, and magnesium is the important core element of plant materials inner chlorophyll composition, plays an important role in Chlorophyll synthesis and photosynthesis.Magnesium elements participates in the anabolic reaction of carbonic acid gas in chloroplast(id), is conducive to the synthesis of sugar and starch; The synthesis of involved in sugar, protein and fat while of magnesium elements.Magnesium elements can promote vitamin A and ascorbic synthesis, participates in the building-up reactions of lipid acid, thus improves the oil length of Urban refuse compost.Magnesium elements can promote that root system of plant absorbs the equilibrium of other nutrient, and sufficient magnesium elements supply improves crop yield and one of important factor improving crop quality.
The particle magnesium fertilizer sold in the market, kieserite are generally formed by simple physical method granulation by the magnesium sulfate heptahydrate of a kind of boric acid, Borate industry by-product or magnesium processes desulfurization by-product and magnesium sulfate monohydrate, brucite, magnesia unslacked, wagnerite, one or both in its raw material fertiliser containing magnesium primary aqueous dissolubility magnesium, solubility in citric acid magnesium or insoluble magnesium, this fertiliser containing magnesium has that raw material is easy to get, advantage with low cost.
But because particle magnesium fertilizer, kieserite are made up of a kind of or two kinds of raw materials, wherein each fertiliser containing magnesium particle is only containing water soluble magnesium or solubility in citric acid magnesium, there is following problem: the dissolving that 1, Mg content is low is too fast, and leaching is serious; 2, it is absorbed by crops that the slaking that Mg content is high is poor, nutrient is not easy dissolving; 3, this kind of particle magnesium fertilizer can not before plant growth the middle and later periods constantly for soil and crop provide magnesium nutrition element, available nutrient undersupply.
Summary of the invention
Goal of the invention: the present invention is directed to above-mentioned prior art Problems existing and make improvement, namely first object of the present invention is for providing a kind of particle magnesium sulfate fertilizer, and it contains multiple magnesium form; Second object of the present invention is for providing a kind of preparation method of particle magnesium sulfate fertilizer.
Technical scheme: a kind of particle magnesium sulfate fertilizer, comprises 70 ~ 95 parts of powdery magnesium sulfate monohydrates, 0 ~ 25 part of powdery light calcined magnesia, 5 ~ 10 parts of powdery wagnerites.
A kind of preferred version as particle magnesium sulfate fertilizer a kind of in the present invention: the particle diameter of described powdery magnesium sulfate monohydrate is 60 ~ 120 orders, water soluble oxidized magnesium mass content in described powdery magnesium sulfate monohydrate is no less than 25%, the solubility in citric acid magnesium oxide mass content in described powdery magnesium sulfate monohydrate is no less than 2%.
A kind of preferred version as particle magnesium sulfate fertilizer a kind of in the present invention: the particle diameter of described powdery light calcined magnesia is 60 ~ 120 orders, and in described powdery light calcined magnesia, solubility in citric acid magnesium oxide mass content is no less than 85%.
A kind of preferred version as particle magnesium sulfate fertilizer a kind of in the present invention: the particle diameter of described powdery wagnerite is 60 ~ 120 orders, and in described powdery wagnerite, insoluble magnesium oxide mass content is no less than 40%.
A kind of preferred version as particle magnesium sulfate fertilizer a kind of in the present invention: the content of magnesia in particle magnesium sulfate fertilizer at least accounts for 25% of fertilizer total mass.
A kind of preferred version as particle magnesium sulfate fertilizer a kind of in the present invention: water soluble oxidized magnesium accounts for 41 ~ 90% of magnesium oxide total mass in particle magnesium sulfate fertilizer, solubility in citric acid magnesium oxide accounts for 5 ~ 55% of magnesium oxide total mass in particle magnesium sulfate fertilizer, and insoluble magnesium oxide accounts for 3 ~ 15% of magnesium oxide total mass in particle magnesium sulfate fertilizer.
A preparation method for above-mentioned particle magnesium sulfate fertilizer, comprises the following steps:
(1) batch mixing: get powdery magnesium sulfate monohydrate 70 ~ 95 parts, powdery light calcined magnesia 0 ~ 25 part and powdery wagnerite 5 ~ 10 parts, to add in double-shaft mixers mix and blend respectively 8 ~ 12 minutes, obtains the dry material mixed by above-mentioned raw materials;
(2) prepare tackiness agent: add in the retort containing suitable quantity of water by powdery light calcined magnesia and sulfuric acid according to mass ratio 1:2.5, at 100 ~ 110 DEG C, stirring reaction 0.5 ~ 2h obtains that PH is 6.5 ~ 7.5, mass concentration is the Adlerika of 30 ~ 40%;
(3) granulation: the dry material in 85 ~ 95 parts of steps (1) is put into a formula tablets press, then adds the Adlerika in 10 ~ 15 parts of steps (2), granulation at 60 ~ 80 DEG C, obtains granular material;
(4) dry: the granular material that step (3) obtains is put into revolving roll drying machine, and at 120 ~ 320 DEG C, successive drying 8 ~ 15 minutes, obtains dried material;
(5) cool: the material obtained in step (4) is put into rotary cooler, material is cooled to less than 40 DEG C, obtain cooled material;
(6) sieve: cooled material in step (5) is put into oscillatory type sieve apparatus, successively by 2mm screen cloth and 4mm screen cloth, obtain the particle magnesium sulfate fertilizer that particle diameter is 2 ~ 4mm.
A kind of preferred version of preparation method as particle magnesium sulfate fertilizer a kind of in the present invention: in step (2), the concentration of sulfuric acid is 98%.
Beneficial effect: a kind of particle magnesium sulfate fertilizer disclosed by the invention and preparation method thereof has following beneficial effect:
Granule strength is moderate, and cost is low, and the form containing water soluble magnesium, solubility in citric acid magnesium and insoluble magnesium three kinds of magnesium in each particle, nutrients release balanced and reasonable, is more conducive to Crop.
Embodiment:
Below the specific embodiment of the present invention is described in detail.
Specific embodiment 1:
A preparation method for above-mentioned particle magnesium sulfate fertilizer, comprises the following steps:
(1) batch mixing: get powdery magnesium sulfate monohydrate 70 parts, powdery light calcined magnesia 25 parts, powdery wagnerite 5 parts, to add in double-shaft mixers mix and blend respectively 8 minutes, obtains the dry material mixed by above-mentioned raw materials;
(2) prepare tackiness agent: add in the retort containing suitable quantity of water by powdery light calcined magnesia and sulfuric acid according to mass ratio 1:2.5, at 100 DEG C, stirring reaction 0.5h obtains that PH is 6.5, mass concentration is the Adlerika of 30%;
(3) granulation: the dry material in 85 parts of steps (1) is put into a formula tablets press, then adds the Adlerika in 10 parts of steps (2), granulation at 60 DEG C, obtains granular material;
(4) dry: the granular material that step (3) obtains is put into revolving roll drying machine, and at 120 DEG C, successive drying 15 minutes, obtains dried material;
(5) cool: the material obtained in step (4) is put into rotary cooler, material is cooled to less than 40 DEG C, obtain cooled material;
(6) sieve: cooled material in step (5) is put into oscillatory type sieve apparatus, successively by 2mm screen cloth and 4mm screen cloth, obtain the particle magnesium sulfate fertilizer that particle diameter is 2 ~ 4mm.
In the present embodiment, in step (2), the concentration of sulfuric acid is 98%.
In the present embodiment, the particle diameter of powdery magnesium sulfate monohydrate is 60 orders, and the water soluble oxidized magnesium mass content in powdery magnesium sulfate monohydrate is 25%, solubility in citric acid magnesium oxide mass content in powdery magnesium sulfate monohydrate is 2%.
In the present embodiment, the particle diameter of powdery wagnerite is 60 orders, and in powdery wagnerite, insoluble magnesium oxide mass content is 45%.
In the present embodiment, the content of magnesia in particle magnesium sulfate fertilizer accounts for 39% of fertilizer total mass.
In the present embodiment, water soluble oxidized magnesium accounts for 43% of magnesium oxide total mass in particle magnesium sulfate fertilizer, and solubility in citric acid magnesium oxide accounts for 52% of magnesium oxide total mass in particle magnesium sulfate fertilizer, and insoluble magnesium oxide accounts for 5% of magnesium oxide total mass in particle magnesium sulfate fertilizer.
Specific embodiment 2
A preparation method for above-mentioned particle magnesium sulfate fertilizer, comprises the following steps:
(1) batch mixing: get powdery magnesium sulfate monohydrate 95 parts and powdery wagnerite 5 parts, to add in double-shaft mixers mix and blend respectively 12 minutes, obtains the dry material mixed by above-mentioned raw materials;
(2) prepare tackiness agent: add in the retort containing suitable quantity of water by powdery light calcined magnesia and sulfuric acid according to mass ratio 1:2.5, at 110 DEG C, stirring reaction 2h obtains that PH is 7.5, mass concentration is the Adlerika of 40%;
(3) granulation: the dry material in 90 parts of steps (1) is put into a formula tablets press, then adds the Adlerika in 15 parts of steps (2), granulation at 80 DEG C, obtains granular material;
(4) dry: the granular material that step (3) obtains is put into revolving roll drying machine, and at 320 DEG C, successive drying 8 minutes, obtains dried material;
(5) cool: the material obtained in step (4) is put into rotary cooler, material is cooled to less than 40 DEG C, obtain cooled material;
(6) sieve: cooled material in step (5) is put into oscillatory type sieve apparatus, successively by 2mm screen cloth and 4mm screen cloth, obtain the particle magnesium sulfate fertilizer that particle diameter is 2 ~ 4mm.
In the present embodiment, in step (2), the concentration of sulfuric acid is 98%.
In the present embodiment, the particle diameter of powdery magnesium sulfate monohydrate is 120 orders, the water soluble oxidized magnesium mass content 25% in powdery magnesium sulfate monohydrate, and the solubility in citric acid magnesium oxide mass content in powdery magnesium sulfate monohydrate is 2%.
In the present embodiment, the particle diameter of powdery wagnerite is 120 orders, and in powdery wagnerite, insoluble magnesium oxide mass content is 46%.
In the present embodiment, the content of magnesia in particle magnesium sulfate fertilizer accounts for 25.8% of fertilizer total mass.
In the present embodiment, water soluble oxidized magnesium accounts for 86% of magnesium oxide total mass in particle magnesium sulfate fertilizer, and solubility in citric acid magnesium oxide accounts for 6% of magnesium oxide total mass in particle magnesium sulfate fertilizer, and insoluble magnesium oxide accounts for 8% of magnesium oxide total mass in particle magnesium sulfate fertilizer.
Specific embodiment 3
A preparation method for above-mentioned particle magnesium sulfate fertilizer, comprises the following steps:
(1) batch mixing: get powdery magnesium sulfate monohydrate 80 parts, powdery light calcined magnesia 10 parts and powdery wagnerite 10 parts, to add in double-shaft mixers mix and blend respectively 10 minutes, obtains the dry material mixed by above-mentioned raw materials;
(2) prepare tackiness agent: add in the retort containing suitable quantity of water by powdery light calcined magnesia and sulfuric acid according to mass ratio 1:2.5, at 105 DEG C, stirring reaction 1h obtains that PH is 7, mass concentration is the Adlerika of 35%;
(3) granulation: the dry material in 88 parts of steps (1) is put into a formula tablets press, then adds the Adlerika in 12 parts of steps (2), granulation at 70 DEG C, obtains granular material;
(4) dry: the granular material that step (3) obtains is put into revolving roll drying machine, and at 200 DEG C, successive drying 10 minutes, obtains dried material;
(5) cool: the material obtained in step (4) is put into rotary cooler, material is cooled to less than 40 DEG C, obtain cooled material;
(6) sieve: cooled material in step (5) is put into oscillatory type sieve apparatus, successively by 2mm screen cloth and 4mm screen cloth, obtain the particle magnesium sulfate fertilizer that particle diameter is 2 ~ 4mm.
In the present embodiment, in step (2), the concentration of sulfuric acid is 98%.
In the present embodiment, the particle diameter of powdery magnesium sulfate monohydrate is 100 orders, and the water soluble oxidized magnesium mass content in powdery magnesium sulfate monohydrate is 25%, and the solubility in citric acid magnesium oxide mass content in powdery magnesium sulfate monohydrate is 3%.
In the present embodiment, the particle diameter of powdery light calcined magnesia is 60 orders, and in powdery light calcined magnesia, solubility in citric acid magnesium oxide mass content is 87%.
In the present embodiment, the particle diameter of powdery wagnerite is 100 orders, and in powdery wagnerite, insoluble magnesium oxide mass content is 45%.
In the present embodiment, the content of magnesia in particle magnesium sulfate fertilizer at least accounts for 33% of fertilizer total mass.
In the present embodiment, water soluble oxidized magnesium accounts for 58% of magnesium oxide total mass in particle magnesium sulfate fertilizer, and solubility in citric acid magnesium oxide accounts for 30% of magnesium oxide total mass in particle magnesium sulfate fertilizer, and insoluble magnesium oxide accounts for 12% of magnesium oxide total mass in particle magnesium sulfate fertilizer.
Mass fraction is refered in particular in statement about number in present specification.
In sum, three kinds of forms of water soluble magnesium, solubility in citric acid magnesium and insoluble magnesium are all contained in each particle of particle magnesium sulfate fertilizer of the present invention, therefore, it is possible to continue, balanced provide magnesium nutrition element for soil and crop, the needs of acid soil especially can be met.
Above embodiments of the present invention are elaborated.But the present invention is not limited to above-mentioned embodiment, in the ken that art those of ordinary skill possesses, can also make a variety of changes under the prerequisite not departing from present inventive concept.
Claims (8)
1. a particle magnesium sulfate fertilizer, is characterized in that, comprises 70 ~ 95 parts of powdery magnesium sulfate monohydrates, 0 ~ 25 part of powdery light calcined magnesia, 5 ~ 10 parts of powdery wagnerites.
2. a kind of particle magnesium sulfate fertilizer as claimed in claim 1, it is characterized in that, the particle diameter of described powdery magnesium sulfate monohydrate is 60 ~ 120 orders, and the water soluble oxidized magnesium mass content in described powdery magnesium sulfate monohydrate is no less than 25%, solubility in citric acid magnesium oxide mass content in described powdery magnesium sulfate monohydrate is no less than 2%.
3. a kind of particle magnesium sulfate fertilizer as claimed in claim 1, is characterized in that, the particle diameter of described powdery light calcined magnesia is 60 ~ 120 orders, and in described powdery light calcined magnesia, solubility in citric acid magnesium oxide mass content is no less than 85%.
4. a kind of particle magnesium sulfate fertilizer as claimed in claim 1, is characterized in that, the particle diameter of described powdery wagnerite is 60 ~ 120 orders, and in described powdery wagnerite, insoluble magnesium oxide mass content is no less than 40%.
5. a kind of particle magnesium sulfate fertilizer as claimed in claim 1, it is characterized in that, the content of magnesia in particle magnesium sulfate fertilizer at least accounts for 25% of fertilizer total mass.
6. a kind of particle magnesium sulfate fertilizer as claimed in claim 1, it is characterized in that, water soluble oxidized magnesium accounts for 41 ~ 90% of magnesium oxide total mass in particle magnesium sulfate fertilizer, solubility in citric acid magnesium oxide accounts for 5 ~ 55% of magnesium oxide total mass in particle magnesium sulfate fertilizer, and insoluble magnesium oxide accounts for 3 ~ 15% of magnesium oxide total mass in particle magnesium sulfate fertilizer.
7. a preparation method for the particle magnesium sulfate fertilizer as described in claim 1 ~ 6 any one, is characterized in that, comprise the following steps:
(1) batch mixing: get powdery magnesium sulfate monohydrate 70 ~ 95 parts, powdery light calcined magnesia 0 ~ 25 part and powdery wagnerite 5 ~ 10 parts, to add in biaxial rneader mix and blend respectively 8 ~ 12 minutes, obtains the dry material mixed by above-mentioned raw materials;
(2) tackiness agent is prepared: powdery light calcined magnesia and sulfuric acid to be added in the retort containing water stirring reaction 0.5 ~ 2.0h at 100 ~ 110 DEG C according to mass ratio 1:2.5 and obtains that PH is 6.5 ~ 7.5, mass concentration is the Adlerika of 30 ~ 40%;
(3) granulation: the dry material in 85 ~ 90 parts of steps (1) is put into a formula tablets press, then adds the Adlerika in 10 ~ 15 parts of steps (2), granulation at 60 ~ 80 DEG C, obtains granular material;
(4) dry: the granular material that step (3) obtains is put into revolving roll drying machine, and at 120 ~ 320 DEG C, successive drying 8 ~ 15 minutes, obtains dried material;
(5) cool: the material obtained in step (4) is put into rotary cooler, material is cooled to less than 40 DEG C, obtain cooled material;
(6) sieve: cooled material in step (5) is put into oscillatory type sieve apparatus, successively by 2mm screen cloth and 4mm screen cloth, obtain the particle magnesium sulfate fertilizer that particle diameter is 2 ~ 4mm.
8. the preparation method of a kind of particle magnesium sulfate fertilizer as claimed in claim 7, is characterized in that, in step (2), the concentration of sulfuric acid is 98%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410723940.3A CN104446677A (en) | 2014-12-01 | 2014-12-01 | Granulated magnesium sulfate fertilizer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410723940.3A CN104446677A (en) | 2014-12-01 | 2014-12-01 | Granulated magnesium sulfate fertilizer and preparation method thereof |
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| CN104446677A true CN104446677A (en) | 2015-03-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105622215A (en) * | 2016-03-17 | 2016-06-01 | 李成旭 | Agricultural magnesium hydroxide fertilizer and application thereof |
| CN106348878A (en) * | 2016-08-30 | 2017-01-25 | 茂名市新东方微肥有限公司 | Magnesium sulfate fertilizer |
| CN107857621A (en) * | 2017-12-08 | 2018-03-30 | 欧艳 | A kind of particle magnesium sulfate fertilizer and preparation method thereof |
| CN108752093A (en) * | 2018-06-07 | 2018-11-06 | 营口菱镁化工集团有限公司 | A kind of bilayer magnesium sulfate slow release fertilizer and preparation method thereof |
| CN112811964A (en) * | 2021-01-18 | 2021-05-18 | 辽宁华昇金玛生态工程有限公司 | Method for preparing secondary element fertilizer by using mother liquor without drying |
| CN113185362A (en) * | 2021-03-16 | 2021-07-30 | 营口菱镁化工集团有限公司 | Multi-effect calcium magnesium fertilizer particle and preparation method thereof |
-
2014
- 2014-12-01 CN CN201410723940.3A patent/CN104446677A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105622215A (en) * | 2016-03-17 | 2016-06-01 | 李成旭 | Agricultural magnesium hydroxide fertilizer and application thereof |
| CN106348878A (en) * | 2016-08-30 | 2017-01-25 | 茂名市新东方微肥有限公司 | Magnesium sulfate fertilizer |
| CN107857621A (en) * | 2017-12-08 | 2018-03-30 | 欧艳 | A kind of particle magnesium sulfate fertilizer and preparation method thereof |
| CN108752093A (en) * | 2018-06-07 | 2018-11-06 | 营口菱镁化工集团有限公司 | A kind of bilayer magnesium sulfate slow release fertilizer and preparation method thereof |
| CN112811964A (en) * | 2021-01-18 | 2021-05-18 | 辽宁华昇金玛生态工程有限公司 | Method for preparing secondary element fertilizer by using mother liquor without drying |
| CN113185362A (en) * | 2021-03-16 | 2021-07-30 | 营口菱镁化工集团有限公司 | Multi-effect calcium magnesium fertilizer particle and preparation method thereof |
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Application publication date: 20150325 |
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