CN115246750A - Graphene compound fertilizer and preparation method thereof - Google Patents
Graphene compound fertilizer and preparation method thereof Download PDFInfo
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- CN115246750A CN115246750A CN202110444664.7A CN202110444664A CN115246750A CN 115246750 A CN115246750 A CN 115246750A CN 202110444664 A CN202110444664 A CN 202110444664A CN 115246750 A CN115246750 A CN 115246750A
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- potassium
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- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 80
- 239000003337 fertilizer Substances 0.000 title claims abstract description 60
- -1 Graphene compound Chemical class 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 19
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 claims description 13
- 239000007864 aqueous solution Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000002686 phosphate fertilizer Substances 0.000 claims description 10
- 239000001103 potassium chloride Substances 0.000 claims description 9
- 235000011164 potassium chloride Nutrition 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 6
- 229940072033 potash Drugs 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 235000015320 potassium carbonate Nutrition 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 238000005054 agglomeration Methods 0.000 claims description 5
- 230000002776 aggregation Effects 0.000 claims description 5
- 239000001506 calcium phosphate Substances 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000265 homogenisation Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 239000011345 viscous material Substances 0.000 claims description 5
- 239000004254 Ammonium phosphate Substances 0.000 claims description 4
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 4
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 4
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 3
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 3
- 235000019739 Dicalciumphosphate Nutrition 0.000 claims description 3
- 239000001099 ammonium carbonate Substances 0.000 claims description 3
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 3
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 claims description 3
- NEFBYIFKOOEVPA-UHFFFAOYSA-K dicalcium phosphate Chemical compound [Ca+2].[Ca+2].[O-]P([O-])([O-])=O NEFBYIFKOOEVPA-UHFFFAOYSA-K 0.000 claims description 3
- 229910000390 dicalcium phosphate Inorganic materials 0.000 claims description 3
- 229940038472 dicalcium phosphate Drugs 0.000 claims description 3
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 3
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 3
- 239000002426 superphosphate Substances 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 2
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 2
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 2
- 235000011010 calcium phosphates Nutrition 0.000 claims description 2
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 238000009775 high-speed stirring Methods 0.000 claims description 2
- SWHAQEYMVUEVNF-UHFFFAOYSA-N magnesium potassium Chemical compound [Mg].[K] SWHAQEYMVUEVNF-UHFFFAOYSA-N 0.000 claims description 2
- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 claims description 2
- 239000002367 phosphate rock Substances 0.000 claims description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 2
- 235000010333 potassium nitrate Nutrition 0.000 claims description 2
- 239000004323 potassium nitrate Substances 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 15
- 238000012271 agricultural production Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 125000000524 functional group Chemical group 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 230000002195 synergetic effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000004720 fertilization Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/04—Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B3/00—Fertilisers based essentially on di-calcium phosphate
-
- 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
-
- 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
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a graphene compound fertilizer and a preparation method thereof, in particular to a graphene synergistic compound fertilizer and a preparation method thereof. The compound fertilizer utilizes the graphene of various different types to provide various fertilizer molecule adsorption capacities, utilizes the characteristics of small size, high surface energy and the like of the graphene and various functional groups to adsorb different fertilizer molecules, promotes the availability of the fertilizer in soil, ensures the effective release of the fertilizer molecules in the soil environment, and has good application prospect in agricultural production.
Description
Technical Field
The invention relates to the technical field of agricultural fertilizers, in particular to a graphene compound fertilizer and a preparation method thereof.
Background
The fertilizer can provide nutrients required by the growth and development of crops, improve soil characteristics and improve the yield and quality of the crops, is an important production data in agricultural production, but the fertilizer product on the market still has the problems of limited plant utilization rate, loss along with rainfall, incapability of being fully and effectively utilized and resource waste. In order to achieve the purpose of fertilization, a large amount of fertilizer can be applied, even excessive fertilizer application is performed, so that not only is the resource waste caused, but also the structure of soil is damaged due to fertilization, the soil is hardened, and the soil cannot be effectively utilized. Therefore, the development of new fertilizers is needed to solve a series of problems caused by low utilization rate, excessive application and the like of the traditional fertilizers, improve the utilization rate of the fertilizers, achieve the purposes of increasing the efficiency and increasing the yield, reducing the amount and reducing the pollution, and is also an inevitable requirement for developing high-efficiency, green and sustainable agriculture.
In order to cope with and solve the above problems, graphene materials have come into the field of view of related researchers. Graphene is a new material formed by tightly stacking sp hybridized and connected carbon atoms into a single-layer two-dimensional cellular lattice structure, has an ultrahigh specific surface area, and can load necessary trace elements onto graphene oxide sheets to a certain extent to produce an effective slow release fertilizer.
The existing graphene compound fertilizer is usually prepared from graphene oxide, the graphene oxide can adsorb fertilizer molecules to a certain degree, but in the actual use process, the main body of the aqueous solution of the graphene oxide is acidic and can react with soil to damage the soil structure; meanwhile, the graphene oxide and fertilizer molecules can generate acid-base neutralization reaction and complex cross-linking reaction, so that the release of the fertilizer molecules is influenced, and the fertilization effect is limited.
Disclosure of Invention
The purpose of the invention is: the graphene compound fertilizer and the preparation method thereof can effectively and slowly release fertilizer molecules in soil, reduce the damage of graphene to the soil, are suitable for various soil environments, can promote crops to absorb nutrient elements in the soil, save fertilizer and increase efficiency of farmlands, and have good market prospects.
In view of the above, the invention provides a graphene compound fertilizer and a preparation method thereof, and the technical scheme comprises,
(1) The graphene compound fertilizer comprises the following components in percentage by mass: 10 to 40 percent of nitrogenous fertilizer, 5 to 50 percent of potash fertilizer, 10 to 50 percent of phosphate fertilizer and 0.1 to 5 percent of graphene raw material.
The nitrogen fertilizer is composed of one or more of urea, ammonium sulfate, ammonium nitrate and ammonium carbonate, wherein urea is preferred.
The potash fertilizer consists of one or more of potassium chloride, potassium sulfate, potassium dihydrogen phosphate, sylvite, potassium magnesium salt, carnallite, potassium nitrate and kiln dust potash fertilizer, wherein the potassium chloride is preferred.
The phosphate fertilizer is composed of one or more of ammonium phosphate, calcium phosphate, triple superphosphate, calcium magnesium phosphate, ground phosphate rock and dicalcium phosphate, wherein the ammonium phosphate is preferred.
The graphene raw material is composed of amino graphene, carboxyl graphene and nitrogen-phosphorus doped graphene.
The amino graphene, the carboxyl graphene and the nitrogen-phosphorus doped graphene are characterized in that the functional surface treatment is carried out on a graphene material by using plasma to obtain the graphene material.
The weight ratio of the amino graphene to the nitrogen fertilizer is as follows: 0.1 to 20 percent;
the weight ratio of the carboxyl graphene to the potash fertilizer is as follows: 0.1 to 15 percent;
the weight ratio of the nitrogen-phosphorus doped graphene to the phosphate fertilizer is 0.1-15%.
The invention also provides a preparation method of the graphene compound fertilizer, which comprises the following steps:
s1, respectively dissolving nitrogen-containing fertilizer, amino graphene, potassium fertilizer, carboxyl graphene, phosphate fertilizer and nitrogen-phosphorus doped graphene in water, and dispersing and mixing the nitrogen-containing fertilizer, the amino graphene, the potassium fertilizer, the carboxyl graphene, the phosphate fertilizer and the nitrogen-phosphorus doped graphene in proportion by a dispersing means to obtain three aqueous solutions;
s2, drying the three aqueous solutions obtained in the step S1 in a dryer to be viscous to obtain a viscous substance;
s3, mixing the three sticky matters obtained in the step S2 according to a ratio, and stirring in a stirrer to obtain a primary material;
s4, heating in the primary material rotary drum granulator in the step S3 to perform agglomeration granulation;
and S5, drying, screening and cooling the granulated substance processed in the step S4 to obtain the graphene compound fertilizer.
The dispersing means in the step S1 comprises one or more of high-pressure homogenization, ultrahigh-pressure microjet homogenization, ultrasound and high-speed stirring, wherein the high-pressure homogenization is preferred;
the drying temperature in the step S2 is as follows: 30-100 ℃, and the weight ratio of the solid content of the dope is as follows: 30-95w%;
in the step S4, the rotation speed of the crushing is 500-2500r/min, and the particle size of the crushed mixed material is 0.1-2 mm;
in the step S4, the rotating drum rotating speed of the rotating drum granulator is 10-15r/min, and the heating temperature is 50-120 ℃;
in step S5, the drying temperature is 80-160 ℃.
The invention has the advantages of promoting the absorption of nutrient elements in soil by crops, promoting the absorption of moisture by crops, further carrying a large amount of nutrient elements into plants, promoting the improvement of the activity of root systems of the crops and the activity of rhizosphere soil enzymes, saving fertilizer and improving efficiency of farmlands, and enabling the crops to be suitable for more kinds of soil environments. In addition, the whole preparation process is simple to operate, has obvious effect and can be widely applied and popularized.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the invention.
Example 1
Dissolving 100g of urea and 1g of amino graphene in 1L of water, and carrying out high-pressure homogenization and uniform mixing; dissolving 100g of potassium chloride and 0.2g of carboxyl graphene in 1L of water, uniformly mixing by ultrasonic, dissolving 100g of ammonium phosphate and 0.1g of nitrogen-phosphorus doped graphene in 1L of water, stirring at a high speed, dispersing and uniformly mixing to obtain three aqueous solutions; drying the three aqueous solutions in a dryer to be viscous to obtain three viscous substances; the drying temperature is as follows: 30-100 ℃, and the weight ratio of the solid content of the dope is as follows: 30-95w%; stirring the three sticky matters in a stirrer according to the proportion of 20 percent, 50 percent and 30 percent of the total weight respectively to obtain a primary material; heating the primary material in a rotary drum granulator to perform agglomeration granulation, and drying, screening and cooling the treated granules; the rotation speed of the crushing is 500-2500r/min, and the particle size of the crushed mixed material is 0.1-2 mm; the rotating drum rotating speed of the rotating drum granulator is 10-15r/min, and the heating temperature is 50-120 ℃; the final drying temperature is 80-160 ℃; and obtaining the graphene compound fertilizer.
Example 2
Dissolving 100g of ammonium nitrate and 1g of amino graphene in 1L of water, and homogenizing and mixing uniformly under high pressure; dissolving 100g of monopotassium phosphate and 5g of carboxyl graphene in 1L of water, uniformly mixing by ultrasonic waves, dissolving 100g of triple superphosphate and 5g of nitrogen-phosphorus doped graphene in 1L of water, and uniformly stirring, dispersing and mixing at a high speed to obtain three aqueous solutions; drying the three aqueous solutions in a dryer to be viscous to obtain three viscous substances; the drying temperature is as follows: 30-100 ℃, and the weight ratio of the solid content of the dope is as follows: 30-95w%; stirring the three sticky matters in a stirrer according to the proportion of 40 percent, 20 percent and 40 percent of the total weight respectively to obtain a primary material; heating the primary material in a rotary drum granulator to carry out agglomeration granulation, and drying, screening and cooling the treated granules; the rotation speed of the crushing is 500-2500r/min, and the particle size of the crushed mixed material is 0.1-2 mm; the rotating drum rotating speed of the rotating drum granulator is 10-15r/min, and the heating temperature is 50-120 ℃; the final drying temperature is 80-160 ℃; and obtaining the graphene compound fertilizer.
Example 3
Dissolving 100g of ammonium carbonate and 20g of amino graphene in 1L of water, and uniformly stirring and mixing at a high speed; dissolving 100g of sylvite and 15g of carboxyl graphene in 1L of water, uniformly mixing the dissolved sylvite and the carboxyl graphene through ultrahigh-pressure microjet, dissolving 100g of dicalcium phosphate and 15g of nitrogen-phosphorus doped graphene in 1L of water, and uniformly mixing the above components through ultrasonic dispersion treatment to obtain three aqueous solutions; drying the three aqueous solutions in a dryer to be viscous to obtain three viscous substances; the drying temperature is as follows: 30-100 ℃, and the weight ratio of the solid content of the dope is as follows: 30-95w%; stirring the three sticky matters in a stirrer according to the proportion of 15 percent, 35 percent and 50 percent of the total weight respectively to obtain a primary material; heating the primary material in a rotary drum granulator to perform agglomeration granulation, and drying, screening and cooling the treated granules; the rotation speed of the crushing is 500-2500r/min, and the particle size of the crushed mixed material is 0.1-2 mm; the rotating drum rotating speed of the rotating drum granulator is 10-15r/min, and the heating temperature is 50-120 ℃; the final drying temperature is 80-160 ℃; and obtaining the graphene compound fertilizer.
Comparative example 1
The urea, the potassium chloride, and the nitrogen and phosphorus were mixed in a mixer in the proportions of 40%,20%, and 40% of the total weight, and were subjected to the same granulation process as in example 1 after mixing, to obtain comparative example 1.
Effect verification
The above examples 1-3 and comparative example 1 were used in seedling growth in forestry, 100 seedlings were grown separately, and fertilizer application was performed once with a fertilizing amount of 3 kg/mu. After 16 days of cultivation, the success rate of seedling cultivation is improved in examples 1 to 3. Specific data are shown in table 1.
TABLE 1
| Amount of fertilizer applied | Number of survivals of seedling | |
| Example 1 | 2.5 kg/mu | 95 |
| Example 2 | 2.5 kg/mu | 98 |
| Example 3 | 2.5 kg/mu | 87 |
| Comparison ofExample 1 | 2.5 kg/mu | 83 |
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The graphene compound fertilizer is characterized by comprising the following components in percentage by mass: 10 to 40 percent of nitrogenous fertilizer, 5 to 50 percent of potash fertilizer, 10 to 50 percent of phosphate fertilizer and 0.1 to 5 percent of graphene raw material.
2. The graphene compound fertilizer according to claim 1, wherein the nitrogen fertilizer is composed of one or more of ammonium sulfate, ammonium nitrate, ammonium carbonate and urea.
3. The graphene compound fertilizer according to claim 1, wherein the potassium fertilizer is composed of one or more of potassium chloride, potassium sulfate, potassium dihydrogen phosphate, sylvite, potassium magnesium salt, carnallite, potassium nitrate and kiln dust potassium fertilizer.
4. The graphene compound fertilizer according to claim 1, wherein the phosphate fertilizer is composed of one or more of ammonium phosphate, calcium phosphate, triple superphosphate, calcium magnesium phosphate, ground phosphate rock, and dicalcium phosphate.
5. The graphene compound fertilizer according to claim 1, wherein the graphene raw material is composed of amino graphene, carboxyl graphene and nitrogen-phosphorus doped graphene.
6. The graphene raw material according to claim 5, wherein the amino graphene, the carboxyl graphene and the nitrogen-phosphorus doped graphene are functionalized by surface treatment with plasma.
7. The graphene raw material according to claim 6, wherein the amino graphene accounts for the weight ratio of the nitrogen fertilizer: 0.1-20%; the weight ratio of the carboxyl graphene to the potash fertilizer is as follows: 0.1-15%; the weight ratio of the nitrogen-phosphorus doped graphene to the phosphate fertilizer is 0.1-15%.
8. The preparation method of the graphene compound fertilizer according to claim 1, characterized by comprising the following steps:
s1, respectively dissolving nitrogen-containing fertilizer, amino graphene, potassium fertilizer, carboxyl graphene, phosphate fertilizer and nitrogen-phosphorus doped graphene in water, and dispersing and mixing the nitrogen-containing fertilizer, the amino graphene, the potassium fertilizer, the carboxyl graphene, the phosphate fertilizer and the nitrogen-phosphorus doped graphene in proportion by a dispersing means to obtain three aqueous solutions;
s2, drying the three aqueous solutions obtained in the step S1 in a dryer to be viscous to obtain a viscous substance;
s3, mixing the three sticky matters obtained in the step S2 according to a ratio, and stirring in a stirrer to obtain a primary material;
s4, performing agglomeration granulation in the initial material rotary drum granulator in the step S3 through heating;
and S5, drying, screening and cooling the granulated substance processed in the step S4 to obtain the graphene compound fertilizer.
9. The preparation method of the graphene compound fertilizer according to claim 6,
the dispersing means in the step S1 comprises one or more of high-pressure homogenization, micro-jet, ultrasound and high-speed stirring;
the drying temperature in the step S2 is as follows: 30-100 ℃, and the weight ratio of the solid content of the dope is as follows: 30-95w%;
in the step S4, the rotation speed of the crushing is 500-2500r/min, and the particle size of the crushed mixed material is 0.1-2 mm;
in the step S4, the rotating drum rotating speed of the rotating drum granulator is 10-15r/min, and the heating temperature is 50-120 ℃;
in step S5, the drying temperature is 80-160 ℃.
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| CN202110444664.7A CN115246750A (en) | 2021-04-25 | 2021-04-25 | Graphene compound fertilizer and preparation method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10203937A1 (en) * | 2002-02-01 | 2003-08-14 | Sustech Gmbh & Co Kg | Stellate pre-polymers containing reactive functional groups on the free ends useful for the production of ultra-thin coatings forming hydrogels and showing non-specific protein absorption and for antifouling coatings |
| CN107344893A (en) * | 2017-08-06 | 2017-11-14 | 长沙善道新材料科技有限公司 | A kind of environment protection type anti-pollution graphene compound fertilizer and preparation method thereof |
| CN108727102A (en) * | 2018-06-12 | 2018-11-02 | 南通强生石墨烯科技有限公司 | A kind of vegetables graphene composite fertilizer and preparation method thereof |
| CN109053289A (en) * | 2018-09-19 | 2018-12-21 | 绩溪农华生物科技有限公司 | A kind of compound controlled release fertilizer granules of graphene and preparation method thereof |
| CN115433036A (en) * | 2021-06-04 | 2022-12-06 | 上海坦隆科技有限公司 | Graphene-rare earth compound fertilizer and preparation method thereof |
| CN115786926A (en) * | 2022-11-21 | 2023-03-14 | 河北工业大学 | Preparation method and application of asymmetric coordination monatomic catalyst synthesized by graphene quantum dots |
-
2021
- 2021-04-25 CN CN202110444664.7A patent/CN115246750A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10203937A1 (en) * | 2002-02-01 | 2003-08-14 | Sustech Gmbh & Co Kg | Stellate pre-polymers containing reactive functional groups on the free ends useful for the production of ultra-thin coatings forming hydrogels and showing non-specific protein absorption and for antifouling coatings |
| CN107344893A (en) * | 2017-08-06 | 2017-11-14 | 长沙善道新材料科技有限公司 | A kind of environment protection type anti-pollution graphene compound fertilizer and preparation method thereof |
| CN108727102A (en) * | 2018-06-12 | 2018-11-02 | 南通强生石墨烯科技有限公司 | A kind of vegetables graphene composite fertilizer and preparation method thereof |
| CN109053289A (en) * | 2018-09-19 | 2018-12-21 | 绩溪农华生物科技有限公司 | A kind of compound controlled release fertilizer granules of graphene and preparation method thereof |
| CN115433036A (en) * | 2021-06-04 | 2022-12-06 | 上海坦隆科技有限公司 | Graphene-rare earth compound fertilizer and preparation method thereof |
| CN115786926A (en) * | 2022-11-21 | 2023-03-14 | 河北工业大学 | Preparation method and application of asymmetric coordination monatomic catalyst synthesized by graphene quantum dots |
Non-Patent Citations (1)
| Title |
|---|
| 李海涛;沈健民;陈骏;: "石墨烯在农业中应用前景浅析", 江苏农机化, no. 05, 30 September 2020 (2020-09-30), pages 11 - 13 * |
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