CN111995461A - Peanut fertilizer and preparation method thereof - Google Patents
Peanut fertilizer and preparation method thereof Download PDFInfo
- Publication number
- CN111995461A CN111995461A CN202010789614.8A CN202010789614A CN111995461A CN 111995461 A CN111995461 A CN 111995461A CN 202010789614 A CN202010789614 A CN 202010789614A CN 111995461 A CN111995461 A CN 111995461A
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- parts
- fertilizer
- peanuts
- caprolactam
- rotary drum
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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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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- 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
- C05G3/80—Soil conditioners
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a peanut fertilizer and a preparation method thereof, wherein the peanut fertilizer comprises the following raw materials in parts by weight: 8-22 parts of urea, 15-35 parts of monoammonium phosphate, 10-20 parts of potassium chloride, 8-25 parts of ammonium sulfate, 5-35 parts of ammonium chloride, 2-5 parts of potassium fulvate, 1-2 parts of zinc sulfate monohydrate, 0.5-1 part of borax, 3-5 parts of a soil conditioner and 2-5 parts of caprolactam terminal sewage device sludge. The preparation method comprises weighing the raw materials in proportion, mixing well, and adding into a rotary drum granulator; introducing low-pressure steam and liquid ammonia into the head of the rotary drum granulator, and inputting a dilute sulfuric acid solution into the tail of the rotary drum granulator; and drying the materials in the granulator, granulating, and screening to obtain the peanut fertilizer. The phosphogypsum and the dewatered sludge are used as production raw materials, so that the cost caused by treating the solid wastes is reduced, beneficial substances in the solid wastes are fully utilized, the resource utilization of the wastes is realized, and the environmental protection is facilitated.
Description
Technical Field
The invention relates to the field of fertilizers, and particularly relates to a peanut fertilizer and a preparation method thereof.
Background
The treatment of solid wastes such as phosphogypsum, dewatered sludge of sewage treatment plants and the like is always a puzzling problem, on one hand, the cost for treating the solid wastes is higher, and the non-purpose waste treatment can cause environmental pollution and ecological damage; on the other hand, the solid wastes contain a lot of recyclable resources, such as calcium sulfate dihydrate and a small amount of phosphoric acid which are main components of phosphogypsum, and contain a large amount of P elements and Ca and S elements which are beneficial to the growth of crops, and particularly peanuts are sensitive to Ca elements.
The defects of the prior peanut fertilizer are mainly reflected in that:
firstly, the nutrient is relatively single, and basically only major elements of nitrogen, phosphorus and potassium are available, and essential trace elements are absent;
and the other is lack of mineral nutrient element activator, namely plant growth regulator, such as humic acid, amino acid or alginic acid.
Disclosure of Invention
The invention provides a fertilizer for peanuts and a preparation method thereof, which can effectively utilize various solid wastes, change wastes into valuables and prepare the fertilizer suitable for the growth of the peanuts.
The technical scheme of the invention is that the peanut fertilizer comprises the following raw materials in parts by weight: 8-22 parts of urea, 15-35 parts of monoammonium phosphate, 10-20 parts of potassium chloride, 8-25 parts of ammonium sulfate, 5-35 parts of ammonium chloride, 2-5 parts of potassium fulvate, 1-2 parts of zinc sulfate monohydrate, 0.5-1 part of borax, 3-5 parts of a soil conditioner and 2-5 parts of caprolactam terminal sewage device sludge; in addition, liquid ammonia accounting for 1-2% of the total mass of the raw materials and dilute sulfuric acid solution accounting for 0.5-1% of the total mass of the raw materials are added during granulation.
In the preferred scheme, 18.5 parts of urea, 15.5 parts of monoammonium phosphate, 16.5 parts of potassium chloride, 10.5 parts of ammonium sulfate, 30.5 parts of ammonium chloride, 2 parts of potassium fulvate, 1 part of zinc sulfate monohydrate, 0.5 part of borax, 3 parts of a soil conditioner and 2 parts of sludge of a caprolactam terminal sewage device.
Further, the soil conditioner is a mixture of phosphogypsum and quick lime, wherein the mass ratio of the phosphogypsum to the quick lime is 3-5: 1.
Further, the pH of the soil conditioner is controlled to be 8-11.
Further, the water content of the caprolactam terminal sewage device sludge is 30-40wt%, and the heavy metal content and the organic harmful substance content of the caprolactam terminal sewage device sludge meet the requirements of hazardous waste identification standard leaching toxicity identification GB 5085.3-2007.
Further, N is 10-11% by mass, and P is present in the monoammonium phosphate2O545-50 percent.
Further, the ammonium sulfate is a byproduct of ammonia desulphurization in a thermal power plant, and the content of N is 20-20.5% by mass.
The invention also relates to a method for preparing the peanut fertilizer, which comprises the following steps:
1) weighing urea, monoammonium phosphate, potassium chloride, ammonium sulfate, ammonium chloride, potassium fulvate, zinc sulfate monohydrate, borax, a soil conditioner and caprolactam terminal sewage device sludge in proportion, uniformly mixing, and adding into a rotary drum granulator;
2) introducing low-pressure steam and liquid ammonia into the head of the rotary drum granulator, and inputting a dilute sulfuric acid solution into the tail of the rotary drum granulator;
3) and drying the materials in the granulator, granulating, and screening to obtain the peanut fertilizer.
Further, the low-pressure steam is 0.4-0.6MPa, and the granulation temperature is 50-60 ℃.
Further, the diameter of the granules sieved in the step 3) is between 2.0mm and 3.8 mm.
The invention has the following beneficial effects:
1. the phosphogypsum and the solid waste of the sewage treatment plant are taken as production raw materials, so that the cost brought by the treatment of the solid waste is solved, beneficial substances in the solid waste are fully utilized, such as Ca, P, S and other elements in the phosphogypsum are sensitive to peanuts, organic matters in the solid waste of the sewage treatment plant are natural organic fertilizers for crops, trace elements contained in the organic fertilizers are beneficial to the healthy growth of the peanuts, the waste is changed into valuable, the resource utilization of the waste is realized, and the environmental protection is facilitated.
2. By adding quicklime into the phosphogypsum, the pH value of the special fertilizer for peanut can be increased, and the special fertilizer is suitable for most of acid soil.
3. In the invention, caprolactam is added into the fertilizer raw material to serve as sewage device sludge, wherein the sewage device sludge contains trace elements such as Cu and Zn, and the heavy metal content and other organic toxic substances are low, so that the caprolactam is an excellent fertilizer production raw material and has a good promotion effect on the growth of crops such as peanuts; on the other hand, the caprolactam in a certain proportion is added into the fertilizer raw materials to end the sewage device sludge, wherein the organic matter content is high, and the potassium fulvate in the raw materials is a good mineral nutrient element activator, and plays an important role in the special fertilizer for peanuts. And finally, the added caprolactam terminal sewage device sludge has better viscosity, can improve the balling rate of the fertilizer, improve the yield and promote the molding of fertilizer particles.
4. To ensure that the sludge shapes the particles, the sludge provided also needs to have a controlled moisture content, as the moisture in the particles decreases, the moisture bridges will contract and the overall cohesion force will decrease due to the decrease in moisture bridges, but the strength of each bond will increase due to the water in the larger capillaries that is first exerted. The remaining water then forms bonds between the smaller particles. When a large amount of water fills all the voids, a two-phase system of water and particles will form. The water content is controlled to 30-40%, and the particles have capillary force for maintaining structure. And the forming effect is ensured through the temperature change in the granulating process.
Detailed Description
The present invention will be further illustrated with reference to the following examples, but the present invention should not be construed as being limited thereto.
Example 1:
the peanut fertilizer comprises, by weight, 16.83% of urea, 26.6% of monoammonium phosphate, 16.29% of potassium chloride, 23.89% of ammonium sulfate, 7.79% of ammonium chloride, 2.1% of potassium fulvate, 1% of zinc sulfate monohydrate, 0.5% of borax, 3% of a soil conditioner and 2% of sludge, wherein the soil conditioner comprises 2.5% of phosphogypsum and 0.5% of quicklime, and the pH value is 8.5; 2 percent of sludge is caprolactam terminal sewage device sludge. In addition, liquid ammonia accounting for 2 percent of the total mass of the raw materials and a dilute sulfuric acid solution accounting for 1 percent of the total mass of the raw materials are added during granulation.
In this example, the water content in the sludge was 38.2%. Copper content of 0.02mg/L, zinc content of 0.148 mg/L, cadmium, lead, hexavalent chromium mercury and the like are not detected, wherein organic pesticides, non-volatile organic compounds, semi-volatile organic compounds, polychlorinated biphenyl and volatile organic compounds are not detected, and the requirements of hazardous waste identification standard leaching toxicity identification GB5085.3-2007 are met.
The fertilizer comprises the following specific preparation steps:
1. mixing urea, monoammonium phosphate, potassium chloride, ammonium sulfate, ammonium chloride, potassium fulvate, zinc sulfate monohydrate, borax, a soil conditioner and sludge of a caprolactam terminal sewage device in proportion, and adding the mixture into a rotary drum granulator;
2. introducing low-pressure steam and liquid ammonia into the head of the rotary drum granulator, and inputting a dilute sulfuric acid solution into the tail of the rotary drum granulator;
3. drying the materials in the granulator, granulating, and screening to obtain finished product granules with the granule size of 2.0-3.8 mm, namely the fertilizer for the peanuts;
the prepared special fertilizer for peanuts contains 18.15% of N and P through detection and analysis2O513.09% by weight of K2O 11.95%。
Example 2
The peanut fertilizer comprises 8.44% of urea, 24.61% of monoammonium phosphate, 15.19% of potassium chloride, 20.94% of ammonium sulfate, 19.82% of ammonium chloride, 3% of potassium fulvate, 1% of zinc sulfate monohydrate, 0.5% of borax, 3.5% of a soil conditioner and 3% of sludge by weight, wherein the soil conditioner comprises 2.8% of phosphogypsum and 0.7% of quicklime, and the pH value is 8.5; 3% of sludge is caprolactam terminal sewage device sludge, and the water content is 31%.
The manufacturing steps are as follows:
1. mixing urea, monoammonium phosphate, potassium chloride, ammonium sulfate, ammonium chloride, potassium fulvate, zinc sulfate monohydrate, borax, a soil conditioner and sludge of a caprolactam terminal sewage device in proportion, and adding the mixture into a rotary drum granulator;
2. introducing low-pressure steam and liquid ammonia into the head of the rotary drum granulator, and inputting a dilute sulfuric acid solution into the tail of the rotary drum granulator; adding liquid ammonia accounting for 2 percent of the total mass of the raw materials and a dilute sulfuric acid solution accounting for 1 percent of the total mass of the raw materials during granulation;
3. drying the materials in the granulator, granulating, and screening to obtain finished product granules with the granule size of 2.0-3.8 mm, namely the special fertilizer for peanuts;
the prepared special fertilizer for peanuts is detected and analyzed to contain 16.05% of N, P2O512.11% of N and 12.04% of K2O 12.04 of N.
Example 3
The peanut fertilizer comprises, by weight, 22% of urea, 27.04% of monoammonium phosphate, 13.51% of potassium chloride, 19.01% of ammonium sulfate, 6.24% of ammonium chloride, 2.7% of potassium fulvate, 1% of zinc sulfate monohydrate, 0.5% of borax, 4% of a soil conditioner and 4% of sludge, wherein the soil conditioner comprises 3% of phosphogypsum and 1% of quicklime, and the pH value is 8.5; 3% of sludge is caprolactam terminal sewage device sludge, and the water content is 35%.
Adopts an ammonia-acid method for drum granulation, and comprises the following steps:
1. mixing urea, monoammonium phosphate, potassium chloride, ammonium sulfate, ammonium chloride, potassium fulvate, zinc sulfate monohydrate, borax, a soil conditioner and sludge of a caprolactam terminal sewage device in proportion, and adding the mixture into a rotary drum granulator;
2. introducing low-pressure steam and liquid ammonia into the head of the rotary drum granulator, and inputting a dilute sulfuric acid solution into the tail of the rotary drum granulator; wherein liquid ammonia accounting for 1.5 percent of the total mass of the raw materials and a dilute sulfuric acid solution accounting for 0.9 percent of the total mass of the raw materials are added during granulation.
3. Drying the materials in the granulator, granulating, and screening to obtain finished product granules with the granule size of 2.0-3.8 mm, namely the special fertilizer for peanuts;
the prepared special fertilizer for peanuts contains 19.82% of N and P through detection and analysis2O512.35% by weight of K2O 10.05%。
Example 4:
in the embodiment, 18.5 parts of urea, 15.5 parts of monoammonium phosphate, 16.5 parts of potassium chloride, 10.5 parts of ammonium sulfate, 30.5 parts of ammonium chloride, 2 parts of potassium fulvate, 1 part of zinc sulfate monohydrate, 0.5 part of borax, 3 parts of a soil conditioner and 2 parts of caprolactam terminal sewage device sludge. The other conditions and preparation method are the same as example 1.
The prepared special fertilizer for peanuts contains N19 through detection and analysis99% of P2O57.1% of K2O 9.85%。
If the caprolactam end-point sewage sludge in example 4 is replaced by municipal sewage sludge, the product quality will be reduced as follows: 1. the strength of the granules is reduced, and the granules are changed from 25N to less than 10N; 2. the granulation rate of the particles is low, and the average output per shift is changed from 250 tons to less than 180 tons; 3. the heavy metal content detected by the product is higher.
Claims (10)
1. The peanut fertilizer is characterized by comprising the following raw materials in parts by weight: 8-22 parts of urea, 15-35 parts of monoammonium phosphate, 10-20 parts of potassium chloride, 8-25 parts of ammonium sulfate, 5-35 parts of ammonium chloride, 2-5 parts of potassium fulvate, 1-2 parts of zinc sulfate monohydrate, 0.5-1 part of borax, 3-5 parts of a soil conditioner and 2-5 parts of caprolactam terminal sewage device sludge; in addition, liquid ammonia accounting for 1-2% of the total mass of the raw materials and dilute sulfuric acid solution accounting for 0.5-1% of the total mass of the raw materials are added during granulation.
2. The fertilizer for peanuts as set forth in claim 1, wherein: wherein, the fertilizer comprises 18.5 parts of urea, 15.5 parts of monoammonium phosphate, 16.5 parts of potassium chloride, 10.5 parts of ammonium sulfate, 30.5 parts of ammonium chloride, 2 parts of fulvic acid potassium, 1 part of zinc sulfate monohydrate, 0.5 part of borax, 3 parts of soil conditioner and 2 parts of caprolactam terminal sewage device sludge.
3. The fertilizer for peanuts as set forth in claim 1, wherein: the soil conditioner is a mixture of phosphogypsum and quick lime, wherein the mass ratio of the phosphogypsum to the quick lime is 3-5: 1.
4. The fertilizer for peanuts as set forth in claim 3, wherein: the pH value of the soil conditioner is controlled to be 8-11.
5. The fertilizer for peanuts as set forth in claim 1, wherein: the water content of the caprolactam terminal sewage device sludge is 30-40wt%, and the heavy metal content and the organic harmful substance content of the caprolactam terminal sewage device sludge meet the requirements of hazardous waste identification standard leaching toxicity identification GB 5085.3-2007.
6. The fertilizer for peanuts as set forth in claim 1, wherein: the monoammonium phosphate comprises 10-11% by mass of N and P2O545-50 percent.
7. The fertilizer for peanuts as set forth in claim 1, wherein: the ammonium sulfate is a byproduct of ammonia desulphurization in a thermal power plant, and the content of N is 20-20.5% by mass.
8. A method for preparing a fertilizer for peanuts as claimed in any one of claims 1 to 7, comprising the steps of:
1) weighing urea, monoammonium phosphate, potassium chloride, ammonium sulfate, ammonium chloride, potassium fulvate, zinc sulfate monohydrate, borax, a soil conditioner and caprolactam terminal sewage device sludge in proportion, uniformly mixing, and adding into a rotary drum granulator;
2) introducing low-pressure steam and liquid ammonia into the head of the rotary drum granulator, and inputting a dilute sulfuric acid solution into the tail of the rotary drum granulator;
3) and drying the materials in the granulator, granulating, and screening to obtain the peanut fertilizer.
9. The method for preparing the peanut fertilizer as claimed in claim 8, wherein the method comprises the following steps: the low-pressure steam is 0.4-0.6MPa, and the granulation temperature is 50-60 ℃.
10. The method for preparing the peanut fertilizer as claimed in claim 8, wherein the method comprises the following steps: the diameter of the particles sieved in the step 3) is between 2.0mm and 3.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789614.8A CN111995461A (en) | 2020-08-07 | 2020-08-07 | Peanut fertilizer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789614.8A CN111995461A (en) | 2020-08-07 | 2020-08-07 | Peanut fertilizer and preparation method thereof |
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| CN111995461A true CN111995461A (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010789614.8A Pending CN111995461A (en) | 2020-08-07 | 2020-08-07 | Peanut fertilizer and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2759734C1 (en) * | 2021-04-08 | 2021-11-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский государственный аграрный университет - МСХА имени К.А. Тимирязева" (ФГБОУ ВО РГАУ - МСХА имени К.А. Тимирязева) | Bioadhesive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503724A (en) * | 2011-10-29 | 2012-06-20 | 史丹利化肥股份有限公司 | Humic acid full-nutrition type fertilizer special for peanuts and preparing method thereof |
| CN107673807A (en) * | 2017-11-10 | 2018-02-09 | 登封市老拴保肥料有限公司 | In the late-maturing peanut BB fertilizer that a large amount of middle amount trace elements that calacareous soil is applied have entirely |
-
2020
- 2020-08-07 CN CN202010789614.8A patent/CN111995461A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503724A (en) * | 2011-10-29 | 2012-06-20 | 史丹利化肥股份有限公司 | Humic acid full-nutrition type fertilizer special for peanuts and preparing method thereof |
| CN107673807A (en) * | 2017-11-10 | 2018-02-09 | 登封市老拴保肥料有限公司 | In the late-maturing peanut BB fertilizer that a large amount of middle amount trace elements that calacareous soil is applied have entirely |
Non-Patent Citations (2)
| Title |
|---|
| 曾晓东: "《第九届环境与发展论坛 论文集》", 30 April 2014, 中国环境出版社 * |
| 汪建飞 等: "《有机肥生产与施用技术》", 31 January 2014, 北京师范大学出版集团 安徽大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2759734C1 (en) * | 2021-04-08 | 2021-11-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский государственный аграрный университет - МСХА имени К.А. Тимирязева" (ФГБОУ ВО РГАУ - МСХА имени К.А. Тимирязева) | Bioadhesive |
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