CN112707758A - Granular calcium magnesium phosphate fertilizer and silicon fertilizer production method - Google Patents
Granular calcium magnesium phosphate fertilizer and silicon fertilizer production method Download PDFInfo
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- CN112707758A CN112707758A CN202110163557.7A CN202110163557A CN112707758A CN 112707758 A CN112707758 A CN 112707758A CN 202110163557 A CN202110163557 A CN 202110163557A CN 112707758 A CN112707758 A CN 112707758A
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- Prior art keywords
- fertilizer
- magnesium phosphate
- calcium magnesium
- silicon
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 197
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000010703 silicon Substances 0.000 title claims abstract description 64
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 64
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000004202 carbamide Substances 0.000 claims abstract description 39
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000011265 semifinished product Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 239000003345 natural gas Substances 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 239000000575 pesticide Substances 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 5
- 239000002689 soil Substances 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 6
- 238000005469 granulation Methods 0.000 description 5
- 230000003179 granulation Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 235000013311 vegetables Nutrition 0.000 description 4
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
-
- 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 discloses a method for preparing granular calcium magnesium phosphate fertilizer and silicon fertilizer, which comprises the following raw materials in parts by weight: the fertilizer is produced by mixing the calcium magnesium phosphate fertilizer, the silicon fertilizer and the urea according to a certain proportion on the basis of the traditional calcium magnesium phosphate fertilizer and silicon fertilizer through a certain process, and a large amount of elements (urea) are supplemented on the basis of the calcium magnesium phosphate fertilizer and the silicon fertilizer, so that the fertilizer efficiency utilization rate of the traditional fertilizer can be effectively improved, the fertilizer plays a great role in soil improvement and reduction of the dosage of fertilizer and pesticide, the use is convenient and environment-friendly, and the labor cost and the economic cost are reduced.
Description
Technical Field
The invention relates to the technical field of inorganic chemistry and other compound synthesis and application, in particular to a method for preparing granular calcium magnesium phosphate fertilizer and silicon fertilizer.
Background
The calcium magnesium phosphate fertilizer and the silicon fertilizer are commonly used fertilizers, are characterized by being insoluble in water and naturally decomposed by weak acid in soil, are called soluble fertilizers, are powdery in property, so that dust is emitted with wind when the fertilizers are applied, bad environmental pollution is caused, the fertilizers are wasted when the fertilizers are scattered, the labor intensity is increased, farmers are unwilling to use the fertilizers although the effects are good, and then a large amount of acidic water-soluble granular fertilizers are used, so that large-area soil acidification of China is caused, and underground water, rivers and lakes are polluted, so that the problems which need to be solved urgently in China are solved at present. However, the granulation difficulty is very high, and the existing technology of clay granulation or acid fertilizer granulation can change the original properties of calcium magnesium phosphate fertilizer and silicon fertilizer, so that the existing granulation technology greatly reduces the utilization rate of the fertilizer.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the preparation method of the granular calcium magnesium phosphate fertilizer and the silicon fertilizer, which can enhance the utilization rate of the fertilizer efficiency without changing the original properties of the fertilizer, supplement a large amount of medium elements for the prepared granular fertilizer, play a great role in reducing the dosage of chemical fertilizers and pesticides in soil improvement, are convenient to use and environment-friendly, and reduce the labor cost and the economic cost.
In order to achieve the purpose, the invention provides the following technical scheme: a granular calcium magnesium phosphate fertilizer and a silicon fertilizer are prepared from the following raw materials in parts by weight: 500-900 parts of silicon fertilizer or calcium magnesium phosphate fertilizer and 100-500 parts of urea.
In a preferred embodiment, 600-800 parts of silicon fertilizer or calcium magnesium phosphate fertilizer and 200-400 parts of urea.
In a preferred embodiment, 700 parts of silicon fertilizer or calcium magnesium phosphate fertilizer and 300 parts of urea.
In a preferred embodiment, the fineness of the silicon fertilizer or the calcium magnesium phosphate fertilizer is controlled to be 300-350 meshes.
In a preferred embodiment, the weight ratio of the urea to the fineness of the silicon fertilizer or the calcium magnesium phosphate fertilizer is 1: 9-5: 5.
a method for preparing granular calcium magnesium phosphate fertilizer and silicon fertilizer comprises the following steps:
step 1, preparing raw materials, namely preparing the following raw materials in parts by weight: 500-900 parts of silicon fertilizer or calcium magnesium phosphate fertilizer and 100-500 parts of urea;
step 2, grinding, namely placing the silicon fertilizer or the calcium magnesium phosphate fertilizer prepared in the step 1 into a grinder, and grinding to 300-350 meshes to obtain a powdery fertilizer A; or directly ordering powdery fertilizer A with the fineness of 300-350 meshes from a silicon fertilizer or calcium-magnesium-phosphate fertilizer manufacturer;
and 3, uniformly mixing, namely mixing the powdery fertilizer A and the urea prepared in the step 1 according to a ratio of 5: 5-9: 1, putting the mixture into a roller granulator, starting the roller granulator, and controlling the rotating speed of the roller granulator to be 40-60 r/min;
and 4, heating and granulating, namely, spraying fire on the shell of the rotating roller barrel by using a natural gas device outside the roller granulator, heating, measuring the temperature of the material by using an infrared detector, heating for 15-20 minutes, rapidly wrapping the powdery material on the surface of urea when the material in the roller barrel reaches 250-300 ℃ until the powdery material is completely adhered to obtain a semi-finished product B, and continuously rolling the semi-finished product B in a roller for 5-8 minutes in a heat preservation state to obtain the smooth and firm molded granular compound fertilizer, and discharging the granular compound fertilizer through a discharge hole.
In the heating process, the temperature of the materials in the roller granulator rises simultaneously, the internal temperature is measured by an infrared detector, and the powdered fertilizer is quickly coated on the surface of urea because the urea starts to melt at 120-132 ℃ until the powdered fertilizer is completely adhered.
In a preferred embodiment, the particle size of the granular compound fertilizer is 1 to 5 mm.
The invention has the technical effects and advantages that:
the technical scheme of the invention does not change the original properties of the calcium magnesium phosphate fertilizer and the silicon fertilizer, and effectively increases the utilization rate of the fertilizer. Compared with the existing products, the fertilizer application amount is reduced compared with the fertilizer application amount when the fertilizer is applied in an equivalent amount, the fertilizer application amount is small on the premise of ensuring the same fertilizer effect, the yield of the vegetable crops, the rice crops and the corn crops using the fertilizer is obviously improved, and the pesticide reduction amount in the growth process of the vegetable crops is greatly improved. On the basis of the production of the traditional calcium magnesium phosphate fertilizer and silicon fertilizer, the calcium magnesium phosphate fertilizer, the silicon fertilizer and the urea are mixed and produced by a certain process according to a certain proportion, and on the basis of the calcium magnesium phosphate fertilizer and the silicon fertilizer, a large amount of elements (urea) are supplemented, so that the fertilizer efficiency utilization rate of the traditional fertilizer can be effectively improved, the fertilizer and the pesticide can be greatly improved and reduced, the fertilizer and the pesticide are convenient to use and environment-friendly, and the labor cost and the economic cost are reduced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 examples of the present invention do not indicate any particular technique or condition, and are carried out according to the technical conditions described in the literature in the art or according to the product specification. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.
Example 1:
a granular calcium magnesium phosphate fertilizer and a silicon fertilizer are prepared from the following raw materials in parts by weight: 900 parts of silicon fertilizer and 100 parts of urea, wherein the fineness of the silicon fertilizer is controlled to be 330 meshes;
on the basis, the preparation method of the granular calcium magnesium phosphate fertilizer and the granular silicon fertilizer comprises the following specific preparation steps:
step 1, preparing raw materials, namely preparing the following raw materials in parts by weight: 900 parts of silicon fertilizer and 100 parts of urea;
step 2, grinding, namely placing the silicon fertilizer or the calcium magnesium phosphate fertilizer prepared in the step 1 into a grinder, and grinding to 300-350 meshes to obtain a powdery fertilizer A; or directly ordering powdery fertilizer A with the fineness of 300-350 meshes from a silicon fertilizer or calcium-magnesium-phosphate fertilizer manufacturer;
and 3, uniformly mixing, namely mixing the powdery fertilizer A and the urea prepared in the step 1 according to the weight ratio of 9: 1, putting the mixture into a roller granulator, starting the roller granulator, and controlling the rotating speed of the roller granulator to be 50 r/min;
and 4, heating granulation, namely spraying fire on the shell of the rotary drum granulator through a natural gas device outside the drum body, heating the shell of the rotary drum granulator, measuring the temperature of the material through an infrared detector, heating for 22 minutes, rapidly wrapping the powdery material on the surface of urea when the material in the drum body reaches 270 ℃, until the powdery material is completely adhered to obtain a semi-finished product B, continuously rolling the semi-finished product B in the drum for 5 minutes under a heat preservation state to obtain the granular composite fertilizer with the particle size of 4mm, and discharging the granular composite fertilizer through a discharge hole.
The technical performance indexes of the granular compound fertilizer prepared by the embodiment are as follows:
| serial number | Detecting items | Unit of | Standard requirements | The result of the detection | Singleton decision |
| 1 | Effective silicon (as S)iO2Meter) content of | ％ | / | 28.8％ | / |
| 2 | Biuret | ％ | / | 0.16％ | / |
| 3 | Nitrogen is present in | ％ | / | 4.5％ | / |
Example 2:
the granular calcium magnesium phosphate fertilizer and silicon fertilizer is prepared with calcium magnesium phosphate fertilizer 500 weight portions and urea 500 weight portions, and has calcium magnesium phosphate fertilizer fineness of 350 mesh;
on the basis, the preparation method of the granular calcium magnesium phosphate fertilizer and the granular silicon fertilizer comprises the following specific preparation steps:
step 1, preparing raw materials, namely preparing the following raw materials in parts by weight: 500 portions of calcium magnesium phosphate fertilizer and 500 portions of urea;
step 2, grinding, namely placing the silicon fertilizer or the calcium magnesium phosphate fertilizer prepared in the step 1 into a grinder, and grinding to 300-350 meshes to obtain a powdery fertilizer A; or directly ordering powdery fertilizer A with the fineness of 300-350 meshes from a silicon fertilizer or calcium-magnesium-phosphate fertilizer manufacturer;
step 3, uniformly mixing, namely uniformly mixing the powdery fertilizer A and the urea prepared in the step 1 according to a weight ratio of 5:5, putting the mixture into a roller granulator, starting the roller granulator, and controlling the rotating speed of the roller granulator to be 40-60 r/min;
and 4, heating and granulating, namely spraying fire on the shell of the rotary drum barrel by using a natural gas device outside the drum granulator, heating, measuring the temperature of the material by using an infrared detector, heating for 18 minutes, rapidly wrapping the powdery material on the surface of urea when the material in the drum barrel reaches 270 ℃, until the powdery material is completely adhered, obtaining a semi-finished product B, continuously rolling the semi-finished product B in the drum for 6 minutes under the heat preservation state to obtain a granular compound fertilizer with the grain diameter of 2.5mm, and discharging the granular compound fertilizer through a discharge hole.
The technical performance indexes of the granular compound fertilizer prepared by the embodiment are as follows:
fruit of Chinese wolfberryExample 3:
a granular calcium magnesium phosphate fertilizer and a silicon fertilizer are prepared from the following raw materials in parts by weight: 700 parts of calcium magnesium phosphate fertilizer or silicon fertilizer and 300 parts of urea, wherein the fineness of the silicon fertilizer or the calcium magnesium phosphate fertilizer is controlled to be 330 meshes;
on the basis of the above, the method for preparing the granular calcium magnesium phosphate fertilizer and the granular silicon fertilizer is further provided, and the specific steps in the embodiment are as follows: 700 parts of silicon fertilizer and 300 parts of urea; the preparation method comprises the following specific steps:
step 1, preparing raw materials, namely preparing the following raw materials in parts by weight: 700 parts of silicon fertilizer and 300 parts of urea;
step 2, grinding, namely placing the silicon fertilizer or the calcium magnesium phosphate fertilizer prepared in the step 1 into a grinder, and grinding to 300-350 meshes to obtain a powdery fertilizer A; or directly ordering powdery fertilizer A with the fineness of 300-350 meshes from a silicon fertilizer or calcium-magnesium-phosphate fertilizer manufacturer;
and 3, uniformly mixing, namely mixing the powdery fertilizer A and the urea prepared in the step 1 according to the ratio of 7: 3, uniformly mixing the components in a weight ratio, putting the mixture into a roller granulator, starting the roller granulator, and controlling the rotating speed of the roller granulator to be 40-60 r/min;
and 4, heating and granulating, namely spraying fire on the shell of the rotary drum barrel by using a natural gas device outside the drum granulator, heating, measuring the temperature of the material by using an infrared detector, heating for 20 minutes, rapidly wrapping the powdery material on the surface of urea when the material in the drum barrel reaches 270 ℃, until the powdery material is completely adhered, obtaining a semi-finished product B, continuously rolling the semi-finished product B in the drum for 7 minutes under the heat preservation state to obtain the granular compound fertilizer with the grain diameter of 3mm, and discharging the granular compound fertilizer through a discharge hole.
The technical performance indexes of the granular compound fertilizer prepared by the embodiment are as follows:
700 portions of 18 percent calcium magnesium phosphate fertilizer and 300 portions of urea are used according to the same steps
The technical performance indexes of the granular compound fertilizer prepared by the embodiment of the invention are as follows:
| serial number | Detecting items | Unit of | Standard requirements | The result of the detection | Singleton decision |
| 1 | Effective phosphorus content | ％ | / | 12.5 | / |
| 2 | Nitrogen is present in | ％ | / | 13.5 | / |
| 3 | Biuret | ％ | / | 0.36 | / |
The planting test of the granular fertilizer product prepared according to the mixture ratio of 700 parts of silicon fertilizer and 300 parts of urea in the embodiment 3 of the invention is as follows:
granular structure-soluble fertilizers are obtained through the above examples, and the granular structure-soluble fertilizers are detected respectively, so that the performances of the granular structure-soluble fertilizers in the three groups of examples are changed differently, wherein the granular structure-soluble fertilizer in example 3 has the best performance.
Three granular soluble fertilizers were obtained from the above three groups of examples, and during the test, the parameters were as follows:
| ratio of urea to urea | Powdery fertilizer | Temperature of heating | Particle diameter | Biuret | |
| Implement one | 100 kg of | 900 kg | 270 degree centigrade | 4mm | 0.16％ |
| Carry out two | 500 kg of | 500 kg of | 270 degree centigrade | 2.5mm | 0.48％ |
| Implementation III | 300 kg of | 700 kg | 270 degree centigrade | 3mm | 0.36％ |
It can be seen that: the granular structure-soluble fertilizer prepared by granulating urea and silicon fertilizer according to the weight ratio of 3:7 has the highest performance index and the best product performance.
The invention reduces the cost greatly in equivalent fertilization, obviously improves the yield of vegetable crops, rice and corn crops by using the product, and greatly reduces the pesticide reduction in the growth process of the vegetable crops. On the basis of the production of the traditional calcium magnesium phosphate fertilizer and silicon fertilizer, the calcium magnesium phosphate fertilizer, the silicon fertilizer and urea are mixed and produced by a certain process according to a certain proportion, and a large amount of medium elements are supplemented on the basis of providing a large amount of trace elements for the calcium magnesium phosphate fertilizer and the silicon fertilizer, so that the fertilizer efficiency utilization rate of the traditional fertilizer can be effectively improved, the fertilizer and the pesticide can be greatly improved and reduced, the fertilizer and the pesticide are convenient to use and environment-friendly, and the labor cost and the economic cost are reduced.
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 are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (7)
1. The granular calcium magnesium phosphate fertilizer and silicon fertilizer is characterized by comprising the following raw materials in parts by weight: 500-900 parts of silicon fertilizer or calcium magnesium phosphate fertilizer and 100-500 parts of urea.
2. The granular calcium magnesium phosphate fertilizer and silicon fertilizer as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 600-800 parts of silicon fertilizer or calcium magnesium phosphate fertilizer and 200-400 parts of urea.
3. The granular calcium magnesium phosphate fertilizer and silicon fertilizer as claimed in claim 1, which is prepared from the following raw materials in parts by weight: 700 portions of silicon fertilizer or calcium magnesium phosphate fertilizer and 300 portions of urea.
4. The granular calcium magnesium phosphate fertilizer and the silicon fertilizer as claimed in any one of claims 1 to 3, wherein the fineness of the silicon fertilizer or the calcium magnesium phosphate fertilizer is controlled to be 300 to 350 meshes.
5. The granular calcium magnesium phosphate fertilizer and silicon fertilizer as claimed in any one of claims 1-3, wherein the weight ratio of urea to silicon fertilizer or calcium magnesium phosphate fertilizer is 1: 9-5: 5.
6. the granular calcium magnesium phosphate fertilizer and the silicon fertilizer as claimed in any one of claims 1 to 5, which further comprise a preparation method of the granular calcium magnesium phosphate fertilizer and the silicon fertilizer, and the preparation method comprises the following steps:
step 1, preparing raw materials, namely preparing the following raw materials in parts by weight: 500-900 parts of silicon fertilizer or calcium magnesium phosphate fertilizer and 100-500 parts of urea;
step 2, grinding, namely placing the silicon fertilizer or the calcium magnesium phosphate fertilizer prepared in the step 1 into a grinder, and grinding to 300-350 meshes to obtain a powdery fertilizer A; or directly ordering powdery fertilizer A with the fineness of 300-350 meshes from a silicon fertilizer or calcium-magnesium-phosphate fertilizer manufacturer;
and 3, uniformly mixing, namely mixing the powdery fertilizer A and the urea prepared in the step 1 according to a ratio of 5: 5-9: 1, putting the mixture into a roller granulator after uniformly mixing the mixture in a weight ratio, starting the roller granulator which is driven by a speed regulating motor to rotate, and controlling the rotating speed of the roller granulator to be 40-60 r/min;
and 4, heating and granulating, namely, spraying fire on the shell of the rotating roller barrel by using a natural gas device outside the roller granulator, heating, measuring the temperature of the material by using an infrared detector, heating for 15-20 minutes, rapidly wrapping the powdery material on the surface of urea when the material in the roller barrel reaches 250-300 ℃ until the powdery material is completely adhered to obtain a semi-finished product B, and continuously rolling the semi-finished product B in a roller for 5-8 minutes in a heat preservation state to obtain the smooth and firm molded granular compound fertilizer, and discharging the granular compound fertilizer through a discharge hole.
7. The method of manufacturing according to claim 6, wherein: the particle size of the granular compound fertilizer is 1-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163557.7A CN112707758A (en) | 2021-02-05 | 2021-02-05 | Granular calcium magnesium phosphate fertilizer and silicon fertilizer production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110163557.7A CN112707758A (en) | 2021-02-05 | 2021-02-05 | Granular calcium magnesium phosphate fertilizer and silicon fertilizer production method |
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| Publication Number | Publication Date |
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| CN112707758A true CN112707758A (en) | 2021-04-27 |
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| CN202110163557.7A Pending CN112707758A (en) | 2021-02-05 | 2021-02-05 | Granular calcium magnesium phosphate fertilizer and silicon fertilizer production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773140A (en) * | 2021-09-23 | 2021-12-10 | 湖北富邦科技股份有限公司 | Easy-to-disintegrate calcium magnesium phosphate fertilizer and preparation method thereof |
-
2021
- 2021-02-05 CN CN202110163557.7A patent/CN112707758A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773140A (en) * | 2021-09-23 | 2021-12-10 | 湖北富邦科技股份有限公司 | Easy-to-disintegrate calcium magnesium phosphate fertilizer and preparation method thereof |
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