CN110963841A - Nitrogen-magnesium compound fertilizer and preparation method thereof - Google Patents
Nitrogen-magnesium compound fertilizer and preparation method thereof Download PDFInfo
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- CN110963841A CN110963841A CN201911420417.2A CN201911420417A CN110963841A CN 110963841 A CN110963841 A CN 110963841A CN 201911420417 A CN201911420417 A CN 201911420417A CN 110963841 A CN110963841 A CN 110963841A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
Abstract
The invention discloses a nitrogen-magnesium compound fertilizer, which comprises, by weight, 30-70 parts of urea, 30-70 parts of magnesium sulfate and 1-18 parts of functional components. The invention has the beneficial effects that: the invention firstly mixes and stirs urea and magnesium sulfate to react to generate MgSO4·CO(NH2)2·mH2And O compound salt is added with functional components to prepare the nitrogen-magnesium compound fertilizer, the obtained nitrogen-magnesium compound fertilizer has multiple fertilizer effects of high-concentration nitrogen-magnesium fertilizer and organic fertilizer, and the fertilizer effect is more comprehensive compared with that of single nitrogen-magnesium fertilizer.
Description
Technical Field
The invention relates to the field of compound fertilizers, in particular to a nitrogen-magnesium compound fertilizer and a preparation method thereof.
Background
Magnesium is one of the elements with high content and wide distribution in the earth crust. Magnesium naturally existing in magnesite MgCO3Dolomite CaMg (CO)3)2Carnallite KCl MgCl2·H2O and olivine also contain large amounts of magnesium in seawater, salt lakes and oil field brines. Exists in a combined state in nature, is mainly distributed in resources such as dolomite ore, salt lake, seawater and the like, the reserve of magnesium on the surface layer of the crust is 8 th place and accounts for 2.35 percent (mass ratio), and known magnesium-containing minerals have more than 60 kinds and have industrial values: magnesite (MgCO)3) 28.8 percent of magnesium; dolomite (MgCO)3·CaCO3) 13.2 percent of magnesium; carnallite (KCl MgCl)2·6H2O), 8.8% magnesium. There are also many magnesium-containing salt lakes, underground brines and salt deposits around the world. Magnesite is one of the dominant mineral resources in China, and reserves, yield and export amount of the magnesite are in the top of the world. China is one of the most abundant countries of magnesite resources in the world, and is mainly distributed in Liaoning province, Shandong province and the like, wherein the Liaoning province is mainly concentrated in the Liaonan region. According to data published in the geological resource hall 2011 of Liaoning province, the currently found magnesite reserves of the Liaoning province are 34 hundred million tons, which account for about 90 percent of the total reserves of the whole country and 25 percent of the total reserves of the world. At present, the reserves and the exploitation amount of Liaoning magnesite, the production amount of magnesia refractory materials, the export amount of refractory materials and the like all live at the top of the world. Magnesium sulfate is widely introduced in the aspects of chemical industry, medicine, light industry and the like, and has better effects of improving the mechanical property of the fertilizer and improving the hardness and the light degree of the product. The application of the magnesium element in agriculture is mainly used as a magnesium fertilizer to supplement the magnesium element for soil and crops. Magnesium is an important component of chlorophyll in plants, plays an important role in plant photosynthesis, and promotes the synthesis of saccharides by participating in carbon assimilation reaction in chloroplasts; magnesium is also a constituent element and an activator of various enzymes, and nitrogen which is important for promoting the synthesis of protein and fat and the growth of crops influences the growth and development of the crops. Urea CO (NH)2)2The nitrogen fertilizer is a high-concentration nitrogen fertilizer widely applied to agricultural production, urea is industrially synthesized by ammonia gas and carbon dioxide under certain conditions, the nitrogen fertilizer contains carbon and nitrogen, the carbon is an essential element for organisms, and the nitrogen is widely distributed in plants and generally concentrated in parts (new leaves, meristems and reproductive organs) with most active life activities. The sufficiency of nitrogen supply and the good nitrogen nutrition of plantsBad, it affects the growth and development of plants to a great extent. Some stages of crop growth are stages with much nitrogen requirement and particularly important nitrogen nutrition, such as tillering stage and ear differentiation stage of gramineous crops, bud and boll stage of cotton, mass growth of commercial crops and formation stage of commercial products. By ensuring normal nitrogen nutrition in these stages, fertility can be promoted and yield can be increased. At present, nitrogen and magnesium fertilizers are not available in the market, are mostly mixtures of nitrogen fertilizers and magnesium fertilizers, belong to inorganic fertilizers, and have incomplete fertilizer efficiency.
Disclosure of Invention
The invention provides a nitrogen-magnesium compound fertilizer and a preparation method thereof, aiming at the problem of single fertilizer efficiency of the existing nitrogen-magnesium fertilizer.
The technical scheme for solving the technical problems is as follows:
the nitrogen-magnesium compound fertilizer is characterized by comprising the following components in parts by weight: 30-70 parts of urea, 30-70 parts of magnesium sulfate and 1-18 parts of functional components.
Further, the functional component is one or more of seaweed extract, fish protein liquid and polypeptide, wherein the seaweed extract contains solid matter 3-5 wt%, and has specific gravity of 1-1.05mg/cm3The pH value is 5-6; the fish protein liquid contains 20-40 wt% of organic matter, 7-20 wt% of amino acid and 6-8.5 of pH value; the polypeptide contains 14-16 wt% of 2-10 small peptides.
The invention also relates to a preparation method of the nitrogen-magnesium compound fertilizer, which comprises the following steps:
1) pulverizing urea and magnesium sulfate to less than 60 meshes, adding into a stirrer according to the weight parts, adding water accounting for 0.8-2.7% of the weight of the powder, heating to 55-70 ℃, stirring at 3000rpm for 10-20 min;
2) weighing the functional components according to the weight parts, adding the functional components into the stirrer, uniformly stirring again, taking out the mixture, and sealing and curing for 3-5 days;
3) granulating the cured material in the step 2) by a granulator, and drying the granules until the water content is less than or equal to 2% to obtain the water-soluble organic silicon fertilizer.
The invention has the beneficial effects that: the invention firstly mixes and stirs urea and magnesium sulfate to react to generate MgSO4·CO(NH2)2·mH2And O compound salt is added with functional components to prepare the nitrogen-magnesium compound fertilizer, the obtained nitrogen-magnesium compound fertilizer has multiple fertilizer effects of high-concentration nitrogen-magnesium fertilizer and organic fertilizer, and the fertilizer effect is more comprehensive compared with that of single nitrogen-magnesium fertilizer. The preparation method of the nitrogen-magnesium compound fertilizer has simple operation and fewer steps, and can ensure the fertilizer efficiency of the components.
Detailed Description
The present invention is described below with reference to examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Example 1
The nitrogen-magnesium compound fertilizer comprises the following components in parts by weight: 30 parts of urea, 70 parts of magnesium sulfate and 18 parts of seaweed extract; wherein the seaweed extract contains 5 wt% of solid matter and has a specific gravity of 1.05mg/cm3The pH was 5.
The preparation method of the nitrogen-magnesium compound fertilizer comprises the following steps:
1) pulverizing urea and magnesium sulfate to less than 60 meshes, adding into a stirrer according to parts by weight, adding water with the weight of 0.8% of the powder, heating to 70 ℃, and stirring at 3000rpm for 10 min;
2) weighing the seaweed extract according to the weight parts, adding the seaweed extract into the stirrer, uniformly stirring again, taking out the mixture, and sealing and curing for 5 days;
3) granulating the cured material in the step 2) by a granulator, and drying the granules until the water content is less than or equal to 2% to obtain the water-soluble organic silicon fertilizer.
Example 2
The nitrogen-magnesium compound fertilizer comprises the following components in parts by weight: 50 parts of urea, 50 parts of magnesium sulfate, 1 part of seaweed extract and 4 parts of fish protein liquid; wherein the seaweed extract contains solid 4 wt% and has a specific gravity of 1.03mg/cm3pH 5.5; the fish protein liquid contains 30 wt% of organic matter, 13 wt% of amino acid and 7 of pH.
The preparation method of the nitrogen-magnesium compound fertilizer comprises the following steps:
1) crushing urea and magnesium sulfate to be less than 60 meshes, adding the crushed materials into a stirrer according to parts by weight, adding water accounting for 1.8 percent of the weight of the powder, heating to 65 ℃, and stirring at 2000rpm for 15 min;
2) weighing the seaweed extract and the fish protein liquid according to the weight parts, adding the seaweed extract and the fish protein liquid into the stirrer, uniformly stirring again, taking out the mixture, and sealing and curing for 3-5 days;
3) granulating the cured material in the step 2) by a granulator, and drying the granules until the water content is less than or equal to 2% to obtain the water-soluble organic silicon fertilizer.
Example 3
The nitrogen-magnesium compound fertilizer comprises the following components in parts by weight: 70 parts of urea, 30 parts of magnesium sulfate, 5 parts of seaweed extract, 5 parts of fish protein liquid and 1 part of polypeptide; wherein the seaweed extractive solution contains solid 3 wt% and has a specific gravity of 1mg/cm3pH is 6; the fish protein liquid contains 40 wt% of organic matter, 7 wt% of amino acid and 8.5 of pH; the polypeptide contains 16 wt% of 2 small peptides.
The preparation method of the nitrogen-magnesium compound fertilizer comprises the following steps:
1) crushing urea and magnesium sulfate to be less than 60 meshes, adding the crushed materials into a stirrer according to parts by weight, adding water accounting for 2.7 percent of the weight of the powder, heating to 55 ℃, and stirring at 1000rpm for 20 min;
2) weighing the seaweed extract, the fish protein liquid and the polypeptide according to the weight parts, adding the seaweed extract, the fish protein liquid and the polypeptide into a stirrer, uniformly stirring again, taking out the mixture, and then sealing and curing for 3 days;
3) granulating the cured material in the step 2) by a granulator, and drying the granules until the water content is less than or equal to 2% to obtain the water-soluble organic silicon fertilizer.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The nitrogen-magnesium compound fertilizer is characterized by comprising the following components in parts by weight: 30-70 parts of urea, 30-70 parts of magnesium sulfate and 1-18 parts of functional components.
2. The nitrogen-magnesium compound fertilizer as claimed in claim 1, wherein the functional component is one or more of a combination of seaweed extract, fish protein liquid and polypeptide.
3. The nitrogen-magnesium compound fertilizer as claimed in claim 2, wherein the seaweed extract contains 3-5 wt% of solids and has a specific gravity of 1-1.05mg/cm3The pH value is 5-6.
4. The nitrogen-magnesium compound fertilizer as claimed in claim 2, wherein the fish protein liquid has an organic matter content of 20-40 wt%, an amino acid content of 7-20 wt% and a pH of 6-8.5.
5. The nitrogen-magnesium compound fertilizer as claimed in claim 2, wherein the polypeptide contains 14-16 wt% of 2-10 small peptides.
6. A method for preparing a nitrogen-magnesium compound fertilizer according to any one of claims 1 to 5, characterized by comprising the following steps:
1) pulverizing urea and magnesium sulfate to less than 60 meshes, adding into a stirrer according to the weight parts, adding water accounting for 0.8-2.7% of the weight of the powder, heating to 55-70 ℃, stirring at 3000rpm for 10-20 min;
2) weighing the functional components according to the weight parts, adding the functional components into the stirrer, uniformly stirring again, taking out the mixture, and sealing and curing for 3-5 days;
3) granulating the cured material in the step 2) by a granulator, and drying the granules until the water content is less than or equal to 2% to obtain the water-soluble organic silicon fertilizer.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673929A (en) * | 2017-11-09 | 2018-02-09 | 众德肥料（烟台）有限公司 | A kind of organic nutrition type a great number of elements Water soluble fertilizer containing biological bacteria and preparation method thereof |
| CN110041114A (en) * | 2019-05-19 | 2019-07-23 | 众德肥料（烟台）有限公司 | A kind of nitrogen magnesium fertilizer and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107673929A (en) * | 2017-11-09 | 2018-02-09 | 众德肥料（烟台）有限公司 | A kind of organic nutrition type a great number of elements Water soluble fertilizer containing biological bacteria and preparation method thereof |
| CN110041114A (en) * | 2019-05-19 | 2019-07-23 | 众德肥料（烟台）有限公司 | A kind of nitrogen magnesium fertilizer and preparation method thereof |
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