CN113735662A - Low-eutectic solvent catalytic coupling mechanochemical activation livestock and poultry manure carbon sequestration emission reduction method - Google Patents
Low-eutectic solvent catalytic coupling mechanochemical activation livestock and poultry manure carbon sequestration emission reduction method Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000010871 livestock manure Substances 0.000 title claims abstract description 31
- 239000002904 solvent Substances 0.000 title claims abstract description 30
- 230000004913 activation Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 18
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- 238000010168 coupling process Methods 0.000 title claims abstract description 14
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- 239000003054 catalyst Substances 0.000 claims description 21
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 21
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- 229910052742 iron Inorganic materials 0.000 claims description 12
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- 229960004106 citric acid Drugs 0.000 claims description 7
- 229910019142 PO4 Inorganic materials 0.000 claims description 6
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- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 claims description 6
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- 238000002156 mixing Methods 0.000 claims description 6
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- 229940072033 potash Drugs 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
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- 238000011049 filling Methods 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 3
- 229940099596 manganese sulfate Drugs 0.000 claims description 3
- 239000011702 manganese sulphate Substances 0.000 claims description 3
- 235000007079 manganese sulphate Nutrition 0.000 claims description 3
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
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- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 18
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- 239000002028 Biomass Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- ZSBXGIUJOOQZMP-UHFFFAOYSA-N Isomatrine Natural products C1CCC2CN3C(=O)CCCC3C3C2N1CCC3 ZSBXGIUJOOQZMP-UHFFFAOYSA-N 0.000 description 1
- ZSBXGIUJOOQZMP-JLNYLFASSA-N Matrine Chemical compound C1CC[C@H]2CN3C(=O)CCC[C@@H]3[C@@H]3[C@H]2N1CCC3 ZSBXGIUJOOQZMP-JLNYLFASSA-N 0.000 description 1
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Images
Classifications
-
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Soil Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a method for carbon sequestration and emission reduction of livestock and poultry manure through catalytic coupling of eutectic solvent and mechanochemical activation, and belongs to the technical field of mineral fertilizer preparation. The invention improves the utilization efficiency of water-carbon-nitrogen full-element resources in the livestock manure by preventing greenhouse gas emission and improves the ecological service function by controlling the loss of water and organic carbon nitrogen through a treatment mode of mechanochemical grinding activation, oxidation harmless treatment of eutectic solvent and solidification and stabilization of metal minerals, thereby realizing the overall efficient cyclic utilization of the livestock manure, and having wide application range and high practical value.
Description
Technical Field
The invention belongs to the technical field of preparation of mineral fertilizers, and particularly relates to a method for carbon sequestration and emission reduction of livestock and poultry manure through catalytic coupling of eutectic solvent and mechanochemical activation.
Background
The organic carbon of the soil combined with the soil metal minerals is a soil productivity functional structure, plays a central role in the formation and maintenance of the soil structure, nutrient circulation and the related life process of the soil, and is a key material basis for the sustainable development of plant growth and agricultural production. The density of organic carbon in soil in China is at a low level in the world, and the carbon stored in the soil is released into the atmosphere within a short time by excessively depending on a land utilization mode of fossil fuel synthetic fertilizers, so that a large amount of soil carbon sink is greatly lost and leaked, unpredictable influence is caused on the environment, particularly, a large amount of soil carbon is released due to climate warming, and the redox capability of the organic carbon in the soil is reduced. Summary analysis based on global data found that at the current productivity level, after soil organic matter was increased by 1%, the average yield of wheat and corn could be increased by 10% and 5%, and the nitrogen fertilizer usage could be reduced by 70%. Livestock manure highly enriched in organic carbon and nitrogen is an important source of soil organic matters, and a green and innovative carbon sequestration technology is urgently needed to improve the closed-loop circulation and full-factor utilization efficiency of the livestock manure.
At present appear on the marketSome organic mineral fertilizers, such as mineral raw material organic fertilizer disclosed in chinese patent 201210261365.0, utilize organic acid generated by organic material fermentation to dissolve out active ingredients in matrine, and mix minerals with porous structure processed by nano process, the prepared mineral raw material organic fertilizer can preserve fertilizer and water, slowly release and control, but it needs to ferment raw materials, the preparation time is long, the working efficiency is low, and the long-time fermentation process is essentially a heat release entropy increase and loss process of a large amount of organic carbon nitrogen C-C fracture, so that the humus content of the fermented product is reduced; simultaneously, a great deal of organic carbon and nitrogen passes through C → CO in the aerobic/anaerobic fermentation process catalyzed by microorganisms2、CH4，N→NH3、N2The greenhouse gas of O is discharged and wasted, thereby causing great secondary pollution; especially, the traditional technical problems that the quality of organic fertilizer products is influenced by water discharge pollution and organic fertilizer product drying in the organic fertilizer fermentation process are solved. At present, researches on conversion of organic carbon and nitrogen in green biomass environment-friendly eutectic solution catalytic oxidation livestock and poultry manure are only reported, and researches on the biological activity inhibition effect of eutectic solvent on ammonia oxidizing bacteria, denitrifying bacteria, actinomycetes and fungi in the livestock and poultry manure treatment process are also rarely involved, and particularly, researches on make internal disorder or usurp for protecting organic carbon and nitrogen by nano metal minerals and controlling greenhouse gas emission and slow release of organic carbon and nitrogen fertilizers are rarely concerned. The increase of the emission intensity of greenhouse gases can greatly reduce the effective utilization rate of the regenerated organic carbon nitrogen, effectively improve the atom economic efficiency of converting the indissolvable macromolecular organic carbon into the active low-molecular organic carbon, increase the content of the active organic carbon nitrogen, effectively improve the quality of the livestock and poultry manure treatment products, meanwhile, the low-carbon conversion is coupled with the C-C bonding of soil microorganisms to construct low-carbon oxygen-containing soil active organic matters (alcohol, aldehyde, acid, ester, amide and the like), which is beneficial to the storage and the capacity expansion of soil and simultaneously reduces the emission of greenhouse gases, therefore, the carbon atom economy in the livestock manure is improved by excavating the potential of carbon and nitrogen resources, the structural combination of water-carbon-nitrogen resources in the livestock manure is optimized, and the bottleneck technology for realizing the efficient recycling of all components of the raw materials such as the livestock manure water-carbon-nitrogen and the like, promoting the efficiency enhancement and emission reduction and improving the full-element green and clean productivity in the livestock manure treatment process is realized.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a eutectic solvent catalytic coupling mechanochemical activation livestock manure carbon fixation emission reduction method, and particularly discloses an organic mineral fertilizer which is prepared by eutectic solvent catalytic coupling mechanochemical activation and has the carbon fixation emission reduction effect and a preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
the method for carbon sequestration and emission reduction of livestock and poultry manure by eutectic solvent catalytic coupling mechanochemical activation comprises the step of preparing an organic mineral fertilizer with the effects of carbon sequestration and emission reduction by eutectic solvent catalytic coupling mechanochemical activation, wherein the organic mineral fertilizer comprises the following raw materials in parts by weight: 40-60 parts of mineral raw materials, 20-30 parts of livestock manure and 5-10 parts of catalyst;
the catalyst is a metal-based eutectic solvent, and the metal-based eutectic solvent is formed by mixing ferrous chloride, choline chloride, citric acid and acetic acid according to the proportion of 0.1-0.5:1-5:2-10: 2-10.
The ferrous chloride can be replaced by ferrous sulfate, manganese sulfate or zinc sulfate.
The mineral raw materials comprise attapulgite, potash feldspar, phosphate rock, coal gangue, struvite, iron ore slag, perlite, vermiculite, diatomite, zeolite and calcite, and the proportion is as follows: attapulgite: potassium feldspar: phosphate ore: coal gangue: guanite: iron ore slag: perlite: vermiculite: diatomite: zeolite: 30-50% of calcite: 5-10: 5-10: 10-20: 5-10: 10-15: 5-10: 5-10: 10-20: 5-10: 5-10.
The preparation method of the organic mineral fertilizer comprises the following steps:
s1: raw material treatment: weighing mineral raw materials, livestock and poultry feces and a catalyst in proportion;
s2: catalyst oxidation hydrolysis: adding the weighed livestock manure and the catalyst into a nano grinder, starting the nano grinder, and grinding for 25-35 minutes at 2000-3000 r/min;
s3: mechanochemical activation: adding the weighed mineral raw materials into the nano-grinder in the step S2, starting the nano-grinder, and grinding for 25-35 minutes at 2000-3000 r/min
S4: detecting the particle size of the material: detecting the materials in the nano grinder, closing the nano grinder when the particle size of the materials is detected to be 50-100nm, and taking out the raw materials from the nano grinder to obtain a crude fertilizer;
s5: screening and bagging a fertilizer crude product: and (4) sieving the crude fertilizer, putting the sieved raw materials with overlarge particle sizes into a nano grinder for grinding again, repeating the steps S2-S5, and filling the sieved crude fertilizer into a sealed bag for storage to obtain the finished organic mineral fertilizer.
Compared with the prior art, the invention has the following beneficial effects:
1) ferrous chloride, choline chloride, citric acid and acetic acid are prepared into a metal-based eutectic solvent according to a proportion, a Fenton-like oxidation system is constructed, a carbon-rich solid pollutant is oxidized and hydrolyzed into high-activity high-value organic carbon nitrogen in the mechanical chemical grinding process, harmless treatment is realized within 30min, then nano metal mineral attapulgite is added, and real-time online solidification and stabilization of active substances are realized through mechanical chemical grinding for 30min, and the synergistic combination of a water-carbon-nitrogen resource structure in livestock and poultry manure is optimized through a treatment mode of 1h of mechanical chemical grinding activation-oxidation harmless treatment of the eutectic solvent-solidification and stabilization of the metal mineral;
2) the organic mineral fertilizer prepared by the invention is an upgraded substitute of the traditional organic fertilizer, the atom economic efficiency of converting insoluble macromolecular organic carbon into active low-molecular organic carbon is effectively improved, the content of active organic carbon and nitrogen is increased, the quality of livestock and poultry manure treatment products can be effectively improved, meanwhile, C-C bonding of low-carbon conversion coupling soil microorganisms is used for constructing low-carbon oxygen-containing soil active organic matters, the soil is favorably expanded and compatibilized, meanwhile, the greenhouse gas emission is reduced, and the organic mineral fertilizer has good economic benefit and wide market prospect;
3) the organic carbon-nitrogen slow-release fertilizer is prepared by oxidizing hydrolysis and mechanochemical activation of raw materials, is simple in preparation method, does not need fermentation of the raw materials, remarkably reduces preparation time, is high in working efficiency, is prepared by adopting natural minerals, is wide and cheap in raw material source, has the effects of slow release and organic carbon nitrogen protection, can reduce emission of greenhouse gases, is green and environment-friendly, and has important significance for sustainable development of agriculture.
Drawings
FIG. 1 is a schematic diagram of a manufacturing process of an embodiment of the present invention.
FIG. 2 is a diagram of the morphology of the nano-solid product according to the embodiment of the invention.
FIG. 3 is an enlarged topographical view of activated solid chicken manure in an example of the present invention.
FIG. 4 is a graph showing the organic carbon nitrogen content test in the product of example 2 of the present invention.
Detailed Description
The present invention will now be described in detail with reference to specific embodiments, which are illustrative of the invention and are not to be construed as limiting the invention.
Examples
The method for carbon sequestration and emission reduction of livestock and poultry manure by eutectic solvent catalytic coupling mechanochemical activation comprises the step of preparing an organic mineral fertilizer with the effects of carbon sequestration and emission reduction by eutectic solvent catalytic coupling mechanochemical activation, wherein the organic mineral fertilizer comprises the following raw materials in parts by weight: 40-60 parts of mineral raw materials, 20-30 parts of livestock manure and 5-10 parts of catalyst;
the catalyst is a metal-based eutectic solvent, and the metal-based eutectic solvent is formed by mixing ferrous chloride, choline chloride, citric acid and acetic acid according to the proportion of 0.1-0.5:1-5:2-10: 2-10.
The ferrous chloride can be replaced by ferrous sulfate, manganese sulfate or zinc sulfate.
The mineral raw materials comprise attapulgite, potash feldspar, phosphate rock, coal gangue, struvite, iron ore slag, perlite, vermiculite, diatomite, zeolite and calcite, and the proportion is as follows: attapulgite: potassium feldspar: phosphate ore: coal gangue: guanite: iron ore slag: perlite: vermiculite: diatomite: zeolite: 30-50% of calcite: 5-10: 5-10: 10-20: 5-10: 10-15: 5-10: 5-10: 10-20: 5-10: 5-10.
The preparation method of the organic mineral fertilizer comprises the following steps:
s1: raw material treatment: weighing mineral raw materials, livestock and poultry feces and a catalyst in proportion;
s2: catalyst oxidation hydrolysis: adding the weighed livestock manure and the catalyst into a nano grinder, starting the nano grinder, and grinding for 25-35 minutes at 2000-3000 r/min;
s3: mechanochemical activation: adding the weighed mineral raw materials into the nano-grinder in the step S2, starting the nano-grinder, and grinding for 25-35 minutes at 2000-3000 r/min
S4: detecting the particle size of the material: detecting the materials in the nano grinder, closing the nano grinder when the particle size of the materials is detected to be 50-100nm, and taking out the raw materials from the nano grinder to obtain a crude fertilizer;
s5: screening and bagging a fertilizer crude product: and (4) sieving the crude fertilizer, putting the sieved raw materials with overlarge particle sizes into a nano grinder for grinding again, repeating the steps S2-S5, and filling the sieved crude fertilizer into a sealed bag for storage to obtain the finished organic mineral fertilizer.
The specific embodiment of the invention is as follows:
example 1
An organic mineral fertilizer with carbon sequestration and emission reduction effects is prepared by eutectic solvent catalysis coupled mechanochemical activation, and comprises the following raw materials in parts by weight: 40 parts of mineral raw materials, 30 parts of livestock manure and 5 parts of catalyst.
The catalyst is a metal-based eutectic solvent, and the metal-based eutectic solvent is formed by mixing ferrous chloride, choline chloride, citric acid and acetic acid according to the proportion of 0.1:1:2: 2.
The mineral raw materials comprise attapulgite, potash feldspar, phosphate rock, coal gangue, struvite, iron ore slag, perlite, vermiculite, diatomite, zeolite and calcite, and the proportion is as follows: attapulgite: potassium feldspar: phosphate ore: coal gangue: guanite: iron ore slag: perlite: vermiculite: diatomite: zeolite: calcite 30: 5: 5: 10: 5: 10: 5: 5: 10: 5: 5.
example 2
An organic mineral fertilizer with carbon sequestration and emission reduction effects is prepared by eutectic solvent catalysis coupled mechanochemical activation, and comprises the following raw materials in parts by weight: 50 parts of mineral raw materials, 20 parts of livestock manure and 8 parts of catalyst.
The catalyst is a metal-based eutectic solvent, and the metal-based eutectic solvent is formed by mixing ferrous chloride, choline chloride, citric acid and acetic acid according to the proportion of 0.1:1:2: 2.
The mineral raw materials comprise attapulgite, potash feldspar, phosphate rock, coal gangue, struvite, iron ore slag, perlite, vermiculite, diatomite, zeolite and calcite, and the proportion is as follows: attapulgite: potassium feldspar: phosphate ore: coal gangue: guanite: iron ore slag: perlite: vermiculite: diatomite: zeolite: calcite 50: 5: 5: 15: 5: 10: 5: 5: 20: 5: 5.
example 3
An organic mineral fertilizer with carbon sequestration and emission reduction effects is prepared by eutectic solvent catalysis coupled mechanochemical activation, and comprises the following raw materials in parts by weight: 60 parts of mineral raw materials, 30 parts of livestock manure and 10 parts of catalyst.
The catalyst is a metal-based eutectic solvent, and the metal-based eutectic solvent is formed by mixing ferrous chloride, choline chloride, citric acid and acetic acid according to the proportion of 0.3:5:8: 8.
The mineral raw materials comprise attapulgite, potash feldspar, phosphate rock, coal gangue, struvite, iron ore slag, perlite, vermiculite, diatomite, zeolite and calcite, and the proportion is as follows: attapulgite: potassium feldspar: phosphate ore: coal gangue: guanite: iron ore slag: perlite: vermiculite: diatomite: zeolite: calcite 40: 10: 10: 20: 10: 15: 10: 10: 20: 10: 10.
the results of the fertilization of examples 1-3 were verified as follows:
example 1: the water evaporation inhibition rate is 30.5%, the soil water content is improved by 25%, the number of water stability aggregates in the soil is 0.28mm, and is increased by 11.2%;
example 2: the water evaporation inhibition rate is 33.2%, the soil water content is improved by 32%, the number of water stability aggregates in the soil is 0.35mm, and is increased by 14.0%;
example 3: the water evaporation inhibition rate is 31.7%, the soil water content is improved by 27%, and the number of water stability aggregates in the soil is 0.32mm, which is increased by 12.8%.
The fertilizer products prepared in examples 1-3 were tested for heavy metal content and the results are shown in table 1 below.
Table 1 test results of heavy metal content in products
Experiments prove that: the organic mineral fertilizer disclosed by the invention has the following characteristics:
1. the fertilizer preparation process can be completed in only 1 hour, fermentation is not needed, and the working efficiency and the raw material conversion efficiency are high;
2. the mineral raw materials can absorb the moisture in the organic raw materials in the grinding process, so that the raw materials do not need to be dried, the treatment effect is not influenced even if the moisture content exceeds 90 percent, and the requirement on the moisture content of the raw materials is low;
3. the catalytic coupling and mechanochemical activation processes of the raw materials have no other heavy metal raw materials, are green and environment-friendly, and have no secondary pollution;
4. the organic fertilizer can be used as an organic fertilizer, a soil conditioner and a soil remediation agent, the product has diversified applications, and is convenient to be recycled according to local conditions;
5. the activation is carried out by adopting a pure mechanical mode, the operation cost is reduced, the estimated production cost is 150-200 Yuan/ton, and the economic benefit is good;
6. the process route is simple, the treatment equipment is few, the occupied area is small, the construction period is short, and the preparation process adopts low-temperature catalysis, so that the energy consumption of thermal conversion can be effectively reduced.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained in the present document by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention.
Claims (4)
1. The method for carbon sequestration and emission reduction of livestock and poultry manure by eutectic solvent catalytic coupling mechanochemical activation comprises preparing an organic mineral fertilizer with the effects of carbon sequestration and emission reduction by eutectic solvent catalytic coupling mechanochemical activation, and is characterized in that the organic mineral fertilizer comprises the following raw materials in parts by weight: 40-60 parts of mineral raw materials, 20-30 parts of livestock manure and 5-10 parts of catalyst;
the catalyst is a metal-based eutectic solvent, and the metal-based eutectic solvent is formed by mixing ferrous chloride, choline chloride, citric acid and acetic acid according to the proportion of 0.1-0.5:1-5:2-10: 2-10.
2. The organomineral fertilizer of claim 1, characterized in that: the ferrous chloride can be replaced by ferrous sulfate, manganese sulfate or zinc sulfate.
3. The organic mineral fertilizer as claimed in claim 1, wherein the mineral raw materials comprise attapulgite, potash feldspar, phosphate rock, coal gangue, struvite, iron slag, perlite, vermiculite, diatomite, zeolite and calcite, and the mixture ratio is as follows: attapulgite: potassium feldspar: phosphate ore: coal gangue: guanite: iron ore slag: perlite: vermiculite: diatomite: zeolite: 30-50% of calcite: 5-10: 5-10: 10-20: 5-10: 10-15: 5-10: 5-10: 10-20: 5-10: 5-10.
4. A method for preparing an organic mineral fertilizer according to claim 1, characterized in that: the method specifically comprises the following steps:
s1: raw material treatment: weighing mineral raw materials, livestock and poultry feces and a catalyst in proportion;
s2: catalyst oxidation hydrolysis: adding the weighed livestock manure and the catalyst into a nano grinder, starting the nano grinder, and grinding for 25-35 minutes at 2000-3000 r/min;
s3: mechanochemical activation: adding the weighed mineral raw materials into the nano-grinder in the step S2, starting the nano-grinder, and grinding for 25-35 minutes at 2000-3000 r/min
S4: detecting the particle size of the material: detecting the materials in the nano grinder, closing the nano grinder when the particle size of the materials is detected to be 50-100nm, and taking out the raw materials from the nano grinder to obtain a crude fertilizer;
s5: screening and bagging a fertilizer crude product: and (4) sieving the crude fertilizer, putting the sieved raw materials with overlarge particle sizes into a nano grinder for grinding again, repeating the steps S2-S5, and filling the sieved crude fertilizer into a sealed bag for storage to obtain the finished organic mineral fertilizer.
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