Multi-element organic acid ore liquid fertilizer and preparation method thereof

Abstract

The invention relates to the technical field of liquid fertilizers, and discloses a multi-element organic acid ore liquid fertilizer and a preparation method thereof.The multi-element organic acid ore liquid fertilizer is prepared from, by weight, 5-7 parts of wood vinegar, 0.5-2 parts of magnesite and 0.5-2 parts of smithsonite, the additive comprises the following components in parts by weight: 0.5-1 part of rhodochrosite, 0.5-1 part of calcium molybdate ore, 0.5-2 parts of boracite, 0-1 part of chalcopyrite, 0-1 part of siderite and a chelating agent. Medium and trace elements in the mineral powder are dissolved out through the organic acid wood vinegar, the water-soluble fertilizer is directly prepared, the cost is low, the energy consumption is low, implementation is convenient, the requirement for the grade of the mineral powder is low, even the more non-heavy metal impurities are, the higher the cost performance of the technology is, meanwhile, the byproduct wood vinegar obtained by cracking biochar through straw and other waste is well utilized, and the environment-friendly effect is achieved. According to the process, the acidity of the pyroligneous liquor is neutralized by the mineral powder, the use safety of the pyroligneous liquor is improved, and the process is also very friendly to plants, soil and environment.

Description

Technical Field

[0001] The invention relates to the technical field of liquid fertilizers, and in particular to a multi-element organic acid ore liquid fertilizer and a preparation method thereof. Background Art

[0002] In recent years, with the development of water-fertilizer integration, water-soluble fertilizers closely related to water-fertilizer integration have played an important role in improving fertilizer utilization, saving agricultural water, reducing ecological environmental pollution, improving crop quality and reducing labor.

[0003] The raw materials used in the conventional production of composite multi-element water-soluble fertilizers are of high purity, high cost, and high energy consumption, which limits the promotion and application of multi-element water-soluble fertilizers. Many impurities are separated and processed during the purification of raw materials, and most of these impurities are other raw materials of water-soluble fertilizers, which are also necessary or beneficial elements for plants. High-purity raw materials are all powders, and they need to be dissolved again to produce aqueous products. The drying cost of high-purity raw materials is high, and the cost performance is low. Summary of the invention

[0004] Based on this, the present invention proposes a safer, low-cost, low-energy-consuming, easy-to-implement multi-element organic acid ore liquid fertilizer and a preparation method thereof.

[0005] According to a first aspect of the present invention, there is provided a multi-element organic acid mineral liquid fertilizer, which comprises, by weight, a multi-element water-soluble fertilizer aqueous solution or a multi-element water-soluble fertilizer powder consisting of the following components:

[0006] 5-7 parts of wood vinegar, 0.5-2 parts of magnesite, 0.5-2 parts of smithsonite, 0.5-1 parts of rhodochrosite, 0.5-1 parts of calcium molybdate ore, 0.5-2 parts of white borate ore, 0-1 parts of cooperite, 0-1 parts of siderite, and 0.1-0.3 parts of a chelating agent.

[0007] According to an embodiment of the present invention, the pH of the wood vinegar is less than 3.

[0008] According to an embodiment of the present invention, the magnesite contains more than 40% magnesium oxide;

[0009] And / or, the smithsonite contains more than 30% zinc oxide;

[0010] And / or, the rhodochrosite contains more than 40% manganese oxide;

[0011] And / or, the white boron ore contains more than 7% boron;

[0012] And / or, the calcium molybdate ore contains more than 20% molybdenum;

[0013] And / or, the chalcopyrite contains more than 30% copper oxide;

[0014] And / or, the siderite contains more than 40% iron oxide.

[0015] According to an embodiment of the present invention, the elements dissolved from the magnesite, the smithsonite, the rhodochrosite, the calcium molybdate ore, the white borate ore, the chalcopyrite, and the siderite are all greater than or equal to 10%;

[0016] And / or, the chelating agent is one or both of glycine and citric acid.

[0017] According to an embodiment of the present invention, 1-3 parts of a large number of elements are also included. In the case of the multi-element water-soluble fertilizer aqueous agent, the large number of elements include one or more of potassium nitrate, potassium dihydrogen phosphate, monoammonium phosphate, urea, and ammonia water.

[0018] According to an embodiment of the present invention, 1-3 parts of a large number of elements are also included. In the case of the multi-element water-soluble fertilizer powder, the large number of elements include one or more of potassium nitrate, potassium sulfate, potassium chloride, potassium dihydrogen phosphate, monoammonium phosphate, urea, and ammonium sulfate.

[0019] According to a second aspect of the present invention, there is provided a method for preparing a multi-element organic acid ore liquid fertilizer, comprising the following steps:

[0020] The magnesite, smithsonite, rhodochrosite, calcium molybdate ore, white boron ore, smithsonite and siderite are respectively crushed into powders of 20-50 mesh for standby use, and magnesite powder, smithsonite powder, rhodochrosite powder, calcium molybdate ore powder, white boron ore powder, smithsonite powder and siderite powder are obtained;

[0021] Add the wood vinegar into the reactor and then add the calcium molybdate powder, and stir well to react for one hour;

[0022] Adding the magnesite powder, the smithsonite powder, the rhodochrosite powder, the white boron powder and the smithsonite powder into the reaction kettle to obtain a semi-finished product;

[0023] Adding the siderite powder to the semi-finished product, reacting until no bubbles are generated, and performing solid-liquid separation to obtain mother liquor A;

[0024] A chelating agent and a large amount of elements are added to the mother solution A, and after dissolution, the multi-element organic acid ore liquid fertilizer is obtained.

[0025] According to an embodiment of the present invention, the step of adding a chelating agent and a large amount of elements to the mother solution A to obtain the multi-element organic acid ore liquid fertilizer after dissolution comprises:

[0026] After adding the chelating agent to the mother solution A, one or more of potassium nitrate, potassium dihydrogen phosphate, monoammonium phosphate, urea and ammonia water are added, and after complete dissolution, a multi-element water-soluble fertilizer solution is obtained.

[0027] According to an embodiment of the present invention, the step of adding a chelating agent and a large amount of elements to the mother solution A to obtain the multi-element organic acid ore liquid fertilizer after dissolution comprises:

[0028] After adding the chelating agent to the mother solution A, the mixture is spray-dried into powder, and one or more of potassium nitrate, potassium sulfate, potassium chloride, potassium dihydrogen phosphate, monoammonium phosphate, urea and ammonium sulfate are added and mixed evenly to obtain a multi-element water-soluble fertilizer powder.

[0029] According to a third aspect of the present invention, there is provided an apparatus for preparing multi-element organic acid ore liquid fertilizer.

[0030] It can be seen from the above technical scheme that the multi-element organic acid ore liquid fertilizer and the preparation method thereof provided by the present invention have the following beneficial effects:

[0031] Compared with the prior art, the advantage of the present invention is that it invents a method of dissolving medium and trace elements in mineral powder by organic acid wood vinegar, and directly preparing it into a water-soluble fertilizer. It has low cost, low energy consumption and is easy to implement. The taste requirements of the mineral powder are low, and the more non-heavy metal impurities there are, the higher the cost performance of the process. At the same time, it makes good use of the by-product wood vinegar of biochar cracking of waste such as straw. The mineral powder of this process neutralizes the acidity of the wood vinegar, improves the safety of the use of the wood vinegar, and is very friendly to plants, soil and the environment even if it is used in large quantities. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the embodiments.

[0033] According to a first aspect of the present invention, there is provided a multi-element organic acid mineral liquid fertilizer, which comprises, by weight, a multi-element water-soluble fertilizer aqueous solution or a multi-element water-soluble fertilizer powder consisting of the following components:

[0034] 5-7 parts of wood vinegar, 0.5-2 parts of magnesite, 0.5-2 parts of smithsonite, 0.5-1 parts of rhodochrosite, 0.5-1 parts of calcium molybdate ore, 0.5-2 parts of white borate ore, 0-1 parts of cooperite, 0-1 parts of siderite, and 0.1-0.3 parts of a chelating agent.

[0035] Wood vinegar is rich in nutrients, including acetic acid, vitamins, phenolic compounds, etc. It has antibacterial and antibacterial effects on plants and can reduce pests and diseases. Wood vinegar is rich in organic matter, which can promote the activity of microorganisms in the soil and improve soil fertility. In addition, wood vinegar has low cost and by-product waste can be reused. The pH of wood vinegar stock solution is very low, generally at 2-3. A maximum of 2-5 kg ​​can be applied to the soil alone. Applying more will cause soil acidification. After the reaction of this process, the acidity of wood vinegar is neutralized and more than 10 kg can be applied.

[0036] Rhodochrosite is rich in various metal elements. For example, pure rhodochrosite is rare and generally contains iron, calcium and zinc. Other extraction processes require the treatment of impurities such as iron, calcium and zinc. These are exactly the elements required for the product of this process. The above ores are added with acid, and the reaction extraction process is simple and low in cost. Other minerals can also be selected.

[0037] According to an embodiment of the present invention, the pH of the wood vinegar is less than 3, and can be appropriately concentrated according to the process.

[0038] According to an embodiment of the present invention, the magnesite contains more than 40% magnesium oxide and may contain other elements such as calcium;

[0039] and / or, the smithsonite contains more than 30% zinc oxide and may contain other elements such as magnesium, calcium, copper, and iron;

[0040] and / or, the rhodochrosite contains more than 40% manganese oxide and may contain other elements such as iron, zinc, magnesium, calcium, etc.;

[0041] and / or, white boron ore contains more than 7% boron and may contain other elements such as magnesium and calcium;

[0042] And / or, the calcium molybdate ore contains more than 20% molybdenum and may contain other elements such as titanium and calcium;

[0043] and / or, the chalcopyrite contains more than 30% copper oxide and may contain other elements such as iron;

[0044] And / or, the siderite contains more than 40% iron oxide and may contain other elements such as magnesium, manganese, copper, etc.

[0045] According to an embodiment of the present invention, the elements dissolved from magnesite, smithsonite, rhodochrosite, calcium molybdate ore, leucoborite, chalcopyrite, and siderite are all greater than or equal to 10%;

[0046] And / or, the chelating agent is one or both of glycine and citric acid.

[0047] According to an embodiment of the present invention, 1-3 parts of a large number of elements are also included. In the case of a multi-element water-soluble fertilizer aqueous solution, the large number of elements include one or more of potassium nitrate, potassium dihydrogen phosphate, monoammonium phosphate, urea, and ammonia water.

[0048] According to an embodiment of the present invention, 1-3 parts of a large number of elements are also included. In the case of a multi-element water-soluble fertilizer powder, the large number of elements include one or more of potassium nitrate, potassium sulfate, potassium chloride, potassium dihydrogen phosphate, monoammonium phosphate, urea, and ammonium sulfate.

[0049] According to a second aspect of the present invention, there is provided a method for preparing a multi-element organic acid ore liquid fertilizer, comprising the following steps:

[0050] The magnesite, smithsonite, rhodochrosite, calcium molybdate ore, white boron ore, smithsonite and siderite are respectively crushed into powders of 20-50 mesh for standby use, and magnesite powder, smithsonite powder, rhodochrosite powder, calcium molybdate ore powder, white boron ore powder, smithsonite powder and siderite powder are obtained;

[0051] Add wood vinegar into the reactor and then add calcium molybdate powder, stir thoroughly and react for one hour;

[0052] Adding magnesite powder, smithsonite powder, rhodochrosite powder, white boron powder and smithsonite powder into a reaction kettle to obtain a semi-finished product;

[0053] Add siderite powder to the semi-finished product, react until no bubbles are generated, and perform solid-liquid separation to obtain mother liquor A;

[0054] Add chelating agent and macroelements to mother solution A, and after dissolution, it will become multi-element organic acid mineral liquid fertilizer.

[0055] According to an embodiment of the present invention, a chelating agent and a large amount of elements are added to the mother solution A, and after dissolution, a multi-element organic acid ore liquid fertilizer is obtained, which includes:

[0056] After adding the A mother liquor to the chelating agent, add one or more of potassium nitrate, potassium dihydrogen phosphate, monoammonium phosphate, urea, and ammonia water. After complete dissolution, a multi-element water-soluble fertilizer solution is obtained.

[0057] According to an embodiment of the present invention, a chelating agent and a large amount of elements are added to the mother solution A, and after dissolution, a multi-element organic acid ore liquid fertilizer is obtained, which includes:

[0058] After adding the chelating agent to the mother solution A, spray-drying it into powder, then adding one or more of potassium nitrate, potassium sulfate, potassium chloride, potassium dihydrogen phosphate, monoammonium phosphate, urea, and ammonium sulfate, and mixing them evenly, a multi-element water-soluble fertilizer powder is obtained.

[0059] According to a third aspect of the present invention, there is provided an apparatus for preparing multi-element organic acid ore liquid fertilizer.

[0060] The technical solution of the present invention is described in detail below through preferred embodiments. It should be noted that the specific embodiments below are only used for illustration and are not used to limit the present invention.

[0061] Example 1

[0062] 5 parts of wood vinegar, 0.5 parts of magnesite, 0.5 parts of smithsonite, 0.5 parts of rhodochrosite, 0.5 parts of calcium molybdate ore, 0.5 parts of white borate ore, and 0.1 parts of glycine.

[0063] Example 2

[0064] 5.5 parts of wood vinegar, 1 part of magnesite, 1 part of smithsonite, 0.6 part of rhodochrosite, 0.6 part of calcium molybdate ore, 1 part of white borate ore, 0.2 part of chalcopyrite, 0.2 part of siderite, and 0.1 part of citric acid.

[0065] Example 3

[0066] 6 parts of wood vinegar, 1.5 parts of magnesite, 1.5 parts of zincite, 0.7 parts of rhodochrosite, 0.7 parts of calcium molybdate ore, 1.5 parts of white borate ore, 0.4 parts of cooperite, 0.4 parts of siderite, 0.2 parts of glycine and 1 part of a mixture of macroelements potassium nitrate, potassium dihydrogen phosphate and monoammonium phosphate.

[0067] Example 4

[0068] 6.5 parts of wood vinegar, 1.5 parts of magnesite, 1.5 parts of smithsonite, 0.8 parts of rhodochrosite, 0.8 parts of calcium molybdate ore, 1.8 parts of white boron ore, 1 part of chalcopyrite, 1 part of siderite, 0.3 parts of glycine, and 2 parts of a mixture of macroelements monoammonium phosphate, urea, and aqueous ammonia.

[0069] Example 5

[0070] 7 parts of wood vinegar, 2 parts of magnesite, 2 parts of smithsonite, 1 part of rhodochrosite, 1 part of calcium molybdate ore, 2 parts of white borate ore, 0.5 part of chalcopyrite, 0.5 part of siderite, 0.3 part of citric acid, and 3 parts of a mixture of macroelements urea and ammonia water.

[0071] Comparative Example 1

[0072] The same as Example 1, except that the acid solution used is acetic acid.

[0073] Comparative Example 2

[0074] Commonly used are single trace element fertilizers with a zinc content of about 10% or 100g / L.

[0075] Experimental Example 1:

[0076] Tomatoes were used as experimental crops, and the compound liquid fertilizers prepared according to the formulas provided in Examples 1 to 5 were used. Comparative Examples 1 to 2 were used as controls, and standard cultivation conditions without any additional fertilizers were used as blank controls.

[0077] The plant height (cm), number of leaves, fruit weight per plant (kg), and total yield (kg / mu) of tomatoes in the experimental field were observed. The specific results are shown in Table 1.

[0078] Table 1. Experimental data of liquid fertilizers used in Examples 1-5.

[0079]

[0080]

[0081] From the data in Table 1, it can be seen that in terms of plant height, Examples 4 and 5 showed the highest average plant height (about 90 cm), while the control group had the lowest average plant height (about 65 cm).

[0082] Number of leaves: Examples 4 and 5 also showed the largest number of leaves (about 49 leaves), while the control group had the least number of leaves (about 30 leaves).

[0083] Single-plant fruit weight: The single-plant fruit weight of Examples 4 and 5 was the highest (about 2.8 kg), while the control group had the lowest (about 1.0 kg).

[0084] Total yield: The total yield of Examples 4 and 5 was the highest (about 3,300 kg / mu), and the control group was the lowest (about 1,200 kg / mu). The treatment groups of Examples 1 to 5 generally showed higher plant height, more leaves, larger fruit weight per plant, and higher total yield.

[0085] The performance of Comparative Example 1 is slightly lower than that of Examples 1 to 5, but is still better than that of Comparative Example 2 and the control group.

[0086] The plant growth performance of Comparative Example 2 and the control group was poor, which indicated that the effect of single element fertilizer was not as good as that of compound micro-fertilizer.

[0087] Effect of composite liquid fertilizer: The composite liquid fertilizers of Examples 1 to 5 have a significant positive effect on crop growth and yield, especially Examples 4 and 5 have the best performance. It can be seen that the various medium and trace composite liquids in the present invention have synergistic effects and can increase yield by 10-30% compared with existing liquid fertilizers.

[0088] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-element organic acid ore liquid fertilizer, characterized in that: The multi-element water-soluble fertilizer solution or multi-element water-soluble fertilizer powder comprises the following components in parts by weight: 5-7 parts of wood vinegar, 0.5-2 parts of magnesite, 0.5-2 parts of smithsonite, 0.5-1 parts of rhodochrosite, 0.5-1 parts of calcium molybdate ore, 0.5-2 parts of white borate ore, 0-1 parts of cooperite, 0-1 parts of siderite, and 0.1-0.3 parts of a chelating agent.

2. The multi-element organic acid ore liquid fertilizer according to claim 1, characterized in that: The pH of the wood vinegar is less than 3.

3. The multi-element organic acid ore liquid fertilizer according to claim 1, characterized in that: The magnesite contains more than 40% magnesium oxide; And / or, the smithsonite contains more than 30% zinc oxide; And / or, the rhodochrosite contains more than 40% manganese oxide; And / or, the white boron ore contains more than 7% boron; And / or, the calcium molybdate ore contains more than 20% molybdenum; And / or, the chalcopyrite contains more than 30% copper oxide; And / or, the siderite contains more than 40% iron oxide.

4. The multi-element organic acid ore liquid fertilizer according to claim 1, characterized in that: The elements dissolved from the magnesite, the smithsonite, the rhodochrosite, the calcium molybdate ore, the white borate ore, the smithsonite, and the siderite are all greater than or equal to 10%; And / or, the chelating agent is one or both of glycine and citric acid.

5. The multi-element organic acid ore liquid fertilizer according to claim 1, characterized in that: It also includes 1-3 parts of a large number of elements. In the case of the multi-element water-soluble fertilizer aqueous solution, the large number of elements includes one or more of potassium nitrate, potassium dihydrogen phosphate, monoammonium phosphate, urea, and ammonia water.

6. The multi-element organic acid ore liquid fertilizer according to claim 1, characterized in that: It also includes 1-3 parts of a large number of elements. In the case of the multi-element water-soluble fertilizer powder, the large number of elements includes one or more of potassium nitrate, potassium sulfate, potassium chloride, potassium dihydrogen phosphate, monoammonium phosphate, urea, and ammonium sulfate.

7. A method for preparing the multi-element organic acid ore liquid fertilizer according to any one of claims 1 to 6, characterized in that: The steps include: The magnesite, smithsonite, rhodochrosite, calcium molybdate ore, white boron ore, smithsonite and siderite are respectively crushed into powders of 20-50 mesh for standby use, and magnesite powder, smithsonite powder, rhodochrosite powder, calcium molybdate ore powder, white boron ore powder, smithsonite powder and siderite powder are obtained; Add the wood vinegar into the reactor and then add the calcium molybdate powder, and stir well to react for one hour; Adding the magnesite powder, the smithsonite powder, the rhodochrosite powder, the white boron powder and the smithsonite powder into the reaction kettle to obtain a semi-finished product; Adding the siderite powder to the semi-finished product, reacting until no bubbles are generated, and performing solid-liquid separation to obtain mother liquor A; A chelating agent and a large amount of elements are added to the mother solution A, and after dissolution, the multi-element organic acid ore liquid fertilizer is obtained.

8. The preparation method according to claim 7, characterized in that: The step of adding a chelating agent and a large amount of elements to the mother solution A to obtain the multi-element organic acid ore liquid fertilizer after dissolution comprises: After adding the chelating agent to the mother solution A, one or more of potassium nitrate, potassium dihydrogen phosphate, monoammonium phosphate, urea and ammonia water are added, and after complete dissolution, a multi-element water-soluble fertilizer solution is obtained.

9. The preparation method according to claim 7, characterized in that: The step of adding a chelating agent and a large amount of elements to the mother solution A to obtain the multi-element organic acid ore liquid fertilizer after dissolution comprises: After adding the chelating agent to the mother solution A, the mixture is spray-dried into powder, and one or more of potassium nitrate, potassium sulfate, potassium chloride, potassium dihydrogen phosphate, monoammonium phosphate, urea and ammonium sulfate are added and mixed evenly to obtain a multi-element water-soluble fertilizer powder.

10. A device for preparing the multi-element organic acid ore liquid fertilizer according to any one of claims 1 to 6.

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