CN114602421A - Method for preparing low-phosphorus porous structure material - Google Patents
Method for preparing low-phosphorus porous structure material Download PDFInfo
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- CN114602421A CN114602421A CN202210194318.2A CN202210194318A CN114602421A CN 114602421 A CN114602421 A CN 114602421A CN 202210194318 A CN202210194318 A CN 202210194318A CN 114602421 A CN114602421 A CN 114602421A
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- 239000011574 phosphorus Substances 0.000 title claims abstract description 101
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 101
- 239000000463 material Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 26
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000000227 grinding Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000002351 wastewater Substances 0.000 claims abstract description 19
- 239000010802 sludge Substances 0.000 claims abstract description 12
- 239000003337 fertilizer Substances 0.000 claims abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 9
- 239000011707 mineral Substances 0.000 claims abstract description 9
- 235000010755 mineral Nutrition 0.000 claims abstract description 9
- 239000011148 porous material Substances 0.000 claims abstract description 9
- 239000010459 dolomite Substances 0.000 claims abstract description 8
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 8
- 238000005188 flotation Methods 0.000 claims abstract description 8
- 239000010440 gypsum Substances 0.000 claims abstract description 8
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 8
- 239000002367 phosphate rock Substances 0.000 claims abstract description 8
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims abstract description 8
- -1 flotation tailings Chemical compound 0.000 claims abstract description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 3
- 239000010433 feldspar Substances 0.000 claims abstract description 3
- 229940072033 potash Drugs 0.000 claims abstract description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims abstract description 3
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 10
- 239000011449 brick Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000011469 building brick Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 10
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 229920006395 saturated elastomer Polymers 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 241000209094 Oryza Species 0.000 description 6
- 235000007164 Oryza sativa Nutrition 0.000 description 6
- 235000009566 rice Nutrition 0.000 description 6
- 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 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010170 biological method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000012851 eutrophication Methods 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000012716 precipitator Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/045—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing sulfur, e.g. sulfates, thiosulfates, gypsum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/048—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing phosphorus, e.g. phosphates, apatites, hydroxyapatites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a method for preparing a low-phosphorus porous structure material, which comprises the steps of sequentially carrying out premixing crushing, grinding and reaction under the conditions of high temperature and high pressure on a certain amount of phosphorite, flotation tailings, potash feldspar, dolomite and gypsum according to a certain mass ratio to prepare the low-phosphorus porous structure material. The low-phosphorus porous structure material prepared by the invention is applied to phosphorus-containing wastewater or phosphorus-containing sludge, and the porous structure material has high specific surface area, high porosity, nano-scale pore diameter and nano-scale active sites, so that phosphorus in the wastewater and sludge can be effectively adsorbed, the purposes of treating environmental pollution and recycling phosphorus are achieved, meanwhile, the low-phosphorus porous structure material saturated in adsorbing phosphorus is recovered, crushed and ground, the porous mineral fertilizer containing phosphorus is prepared, the purpose of resource recycling is achieved, and the application added value of the low-phosphorus porous structure material is improved.
Description
Technical Field
The invention relates to a method for preparing a low-phosphorus material, in particular to a method for preparing a low-phosphorus porous structure material, and the prepared low-phosphorus porous structure material can be applied to the field of phosphorus-containing wastewater or phosphorus-containing sludge application.
Background
At present, phosphorus is a key influencing factor causing water eutrophication, and if the problem of water eutrophication is to be solved fundamentally, phosphorus is removed from sewage firstly. The research and production application of phosphorus removal in developed countries has been over 40 years old, and the research in China began in the 80 th 20 th century. The total phosphorus removal proportion of Europe is 13%, wherein Denmark, Norway, Sweden and Switzerland are the countries with the highest phosphorus removal proportion of European wastewater, and the phosphorus removal proportion of Switzerland reaches 90%.
The domestic and foreign sewage dephosphorization technology mainly comprises two major types, namely a chemical method and a biological method. The biological method is mainly suitable for treating low-concentration and organic phosphorus-containing wastewater, the chemical method is mainly suitable for treating inorganic phosphorus-containing wastewater, and the coagulating sedimentation method in the chemical method has high phosphorus removal efficiency and is a reliable high-phosphorus-containing wastewater treatment method.
Among them, the biological method, Spector in the us of the 70 th 20 th century, found that microorganisms can take up phosphorus in an aerobic state and emit phosphorus in an anaerobic state in the presence of organic matter. The biological treatment method of the phosphorus-containing wastewater is gradually formed and perfected on the basis of the biological treatment method. The biological phosphorus removal method has good treatment effect, does not have the defect that the sludge is difficult to treat by a chemical precipitation method, and does not need to add a precipitator. For the secondary activated sludge process, the biological phosphorus removal effect can be achieved by only changing the operation flow without adding a large amount of equipment, the use conditions of the existing microorganisms are limited, and the phosphorus removal effect is unstable.
The chemical precipitation method is characterized in that a chemical precipitator is added to generate insoluble precipitate with phosphate in wastewater, phosphorus can be separated out, and meanwhile, the formed flocculating constituent has an adsorption removal effect on the phosphorus. Common coagulating and precipitating agents include lime, alum, ferric chloride, mixtures of lime and ferric chloride, and the like. The main factors influencing the reaction are pH, concentration ratio, reaction time and the like, and the process influencing factors are particularly more problematic.
Disclosure of Invention
The invention aims to provide a method for preparing a low-phosphorus porous structure material, which comprises the steps of sequentially carrying out premixing crushing, grinding and reaction under the conditions of high temperature and high pressure on a certain amount of phosphorite, flotation tailings, potassium feldspar, dolomite and gypsum according to a certain mass ratio to prepare the low-phosphorus porous structure material. The low-phosphorus porous structure material prepared by the invention is applied to phosphorus-containing wastewater or phosphorus-containing sludge, and has high specific surface area, high porosity, nanoscale pore diameter and nanoscale active sites, so that phosphorus in the wastewater and sludge can be effectively adsorbed, the purposes of treating environmental pollution and recycling phosphorus are achieved, meanwhile, the low-phosphorus porous structure material saturated by adsorbing phosphorus is recycled, crushed and ground, the phosphorus-containing porous mineral fertilizer is prepared, the purpose of resource recycling is achieved, and the application additional value of the low-phosphorus porous structure material is improved. Has wide application market and market potential.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for preparing a low-phosphorous porous structure material, characterized by comprising the steps of:
(1) the method comprises the steps of firstly premixing and crushing phosphorite, flotation tailings, potash feldspar, dolomite and gypsum according to a certain mass ratio, then placing a premixed crushed product into a grinder for grinding for 10-30 min, wherein the particle size control range is 1-3 mm, and preparing a crushed material A;
(2) adding the crushed material A in the step (1) into alkali liquor, then placing the alkali liquor into a wet ball mill for grinding for 10-30 min, and obtaining a material B by grinding the product with the fineness of 100-600 meshes;
(3) placing the material B in the step (2) into a high-pressure reaction kettle, controlling the pressure to be 2-15 kgf, controlling the temperature to be 150-300 ℃, and reacting for 8-24 hours; and after the reaction is finished, drying to obtain the low-phosphorus porous structure material.
The content range of the phosphorus pentoxide in the low-phosphorus porous structure material is 4-7%.
The low-phosphorus porous structure material has a pore diameter range of 10-100 nm and a porosity of more than 60%.
The low-phosphorus porous structure material is made into a building block brick, and the building block brick is applied to phosphorus-containing wastewater or phosphorus-containing sludge to adsorb phosphorus.
And (3) crushing the building brick of the low-phosphorus porous structure material adsorbing phosphorus, and applying the building brick to the preparation of the porous mineral fertilizer containing phosphorus.
Compared with the prior art, the method for preparing the low-phosphorus porous structure material has the following advantages:
(1) the low-phosphorus porous structure material prepared by the invention is applied to phosphorus-containing wastewater or phosphorus-containing sludge, and the porous structure material prepared by the invention has high specific surface area, high porosity, nano-scale pore diameter and nano-scale active sites, can effectively adsorb phosphorus in the wastewater and sludge, and achieves the purposes of treating environmental pollution and recycling phosphorus.
(2) The low-phosphorus porous structure material prepared by the invention is applied to phosphorus-containing wastewater or phosphorus-containing sludge, the low-phosphorus porous structure material saturated by adsorbing phosphorus is recovered, and the material is crushed and ground to prepare the phosphorus-containing porous mineral fertilizer, so that the aim of recycling resources is fulfilled, and the application additional value of the low-phosphorus porous structure material is improved.
Detailed Description
The invention is further described in connection with the examples, which are obtained as raw materials for the examples.
Example 1
(1) Pre-mixing and crushing 15 parts of phosphorite, 60 parts of flotation tailings, 10 parts of potassium feldspar, 5 parts of dolomite and 5 parts of gypsum, then placing the pre-mixed crushed product into a thunder mill for grinding for 20min, and controlling the particle size to be 2mm to prepare a crushed material A;
(2) adding the crushed material A in the step (1) into 5 parts of 10% sodium carbonate aqueous solution, then placing the mixture into a wet ball mill for grinding for 30min, and grinding the product to 400 meshes to obtain a material B;
(3) and (3) placing the material B in the step (2) into a high-pressure reaction kettle, controlling the pressure to be 6kgf, controlling the reaction temperature to be 250 ℃, and reacting for 12 hours. After the reaction is finished, filtering and drying to prepare the porous structure material with low phosphorus content;
through detection and analysis: low phosphorus content porous structure material, its pentaoxidePhosphorus content (P)2O5): 4.7 percent, the pore size distribution is 30-100 nm, and the porosity is 75 percent. The porous structure material with low phosphorus content is made into a building block brick which is applied to phosphorus-containing wastewater, and the adsorption capacity is 200g/m3。
Through a rice field test, 10kg of mineral fertilizer prepared by recycling the porous structure material with low phosphorus content is applied to each mu; the data show that rice is increased by 20%.
Example 2
(1) Premixing and crushing 10 parts of phosphorite, 60 parts of flotation tailings, 15 parts of potassium feldspar, 4.5 parts of dolomite and 5.5 parts of gypsum, then placing the premixed and crushed product into a grinder for grinding for 30min, and controlling the particle size to be 1.8mm to prepare a crushed material A;
(2) adding the crushed material A in the step (1) into 5 parts of 10% sodium carbonate aqueous solution, then placing the mixture into a wet ball mill for grinding for 30min, and grinding the product to 100 meshes to obtain a material B;
(3) and (3) placing the material B in the step (2) into a high-pressure reaction kettle, controlling the pressure to be 6kgf, controlling the reaction temperature to be 250 ℃, and reacting for 12 hours. After the reaction is finished, filtering and drying to prepare the porous structure material with low phosphorus content;
through detection and analysis: low phosphorus content porous structure material having phosphorus pentoxide content (P)2O5): 4.5 percent, 20-100 nm of pore size distribution and 85 percent of porosity. The porous structure material with low phosphorus content is made into building blocks which are applied to phosphorus-containing wastewater, and the adsorption capacity is 220g/m3。
Through a rice field test, 10kg of mineral fertilizer prepared by recycling the porous structure material with low phosphorus content is applied to each mu; the data shows that wheat is increased by 15%.
Example 3
(1) Pre-mixing and crushing 20 parts of phosphorite, 50 parts of flotation tailings, 5 parts of potassium feldspar, 4 parts of dolomite and 3 parts of gypsum, then placing the pre-mixed crushed product into a thunder mill for grinding for 10min, and controlling the particle size to be 3mm to prepare a crushed material A;
(2) adding the crushed material A in the step (1) into 18 parts of 5% sodium carbonate aqueous solution, then placing the mixture into a wet ball mill for grinding for 10min, and grinding the product to 300 meshes to obtain a material B;
(3) and (3) placing the material B in the step (2) into a high-pressure reaction kettle, controlling the pressure to be 2kgf, controlling the reaction temperature to be 300 ℃, and reacting for 24 hours. After the reaction is finished, filtering and drying to prepare the porous structure material with low phosphorus content;
through detection and analysis: low phosphorus content porous structure material having phosphorus pentoxide content (P)2O5): 6.1 percent, the pore size distribution is 30-90 nm, and the porosity is 93 percent. The porous structure material with low phosphorus content is made into a building block brick which is applied to phosphorus-containing wastewater, and the adsorption capacity is 251g/m3。
Through a rice field test, 10kg of mineral fertilizer prepared by recycling the porous structure material with low phosphorus content is applied to each mu; the data show that rice is increased by 19%.
Example 4
(1) Pre-mixing and crushing 25 parts of phosphorite, 45 parts of flotation tailings, 5 parts of potassium feldspar, 2.5 parts of dolomite and 7.5 parts of gypsum, then placing the pre-mixed crushed product into a grinder for grinding for 30min, and controlling the particle size to be 1.0mm to prepare a crushed material A;
(2) adding the crushed material A in the step (1) into 15 parts of 8% sodium carbonate aqueous solution, then placing the mixture into a wet ball mill for grinding for 20min, and grinding the product to 600 meshes to obtain a material B;
(3) and (3) placing the material B in the step (2) into a high-pressure reaction kettle, controlling the pressure to be 15kgf, controlling the reaction temperature to be 150 ℃, and reacting for 8 hours. After the reaction is finished, filtering and drying to prepare the porous structure material with low phosphorus content;
through detection and analysis: low phosphorus content porous structure material having phosphorus pentoxide content (P)2O5): 5.1 percent, 20 to 100nm of pore size distribution and 89.6 percent of porosity. The porous structure material with low phosphorus content is made into building blocks which are applied to phosphorus-containing wastewater, and the adsorption capacity is 230g/m3。
Through a rice field test, 10kg of mineral fertilizer prepared by recycling the porous structure material with low phosphorus content is applied to each mu; the data shows that the wheat yield is increased by 16%.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A method for preparing a low-phosphorus porous structure material, characterized by comprising the steps of:
(1) the method comprises the steps of firstly premixing and crushing phosphorite, flotation tailings, potash feldspar, dolomite and gypsum according to a certain mass ratio, then placing a premixed crushed product into a grinder for grinding for 10-30 min, wherein the particle size control range is 1-3 mm, and preparing a crushed material A;
(2) adding the crushed material A obtained in the step (1) into alkali liquor, then placing the mixture into a wet ball mill for grinding for 10-30 min, and obtaining a material B by grinding the product with the fineness of 100-600 meshes;
(3) placing the material B in the step (2) into a high-pressure reaction kettle, controlling the pressure to be 2-15 kgf, controlling the temperature to be 150-300 ℃, and reacting for 8-24 hours; and after the reaction is finished, drying to obtain the low-phosphorus porous structure material.
2. The method of claim 1, wherein the porous structure is a low-phosphorous porous structure comprising: the content range of the phosphorus pentoxide in the low-phosphorus porous structure material is 4-7%.
3. The method of claim 1, wherein the porous structure is selected from the group consisting of: the low-phosphorus porous structure material has a pore diameter range of 10-100 nm and a porosity of more than 60%.
4. The method of claim 1, wherein the porous structure is a low-phosphorous porous structure comprising: the low-phosphorus porous structure material is made into a building block brick, and the building block brick is applied to phosphorus-containing wastewater or phosphorus-containing sludge to adsorb phosphorus.
5. The method of claim 4, wherein the porous structure is a low-phosphorous porous structure comprising: and (3) crushing the building brick of the low-phosphorus porous structure material adsorbing phosphorus, and applying the building brick to the preparation of the porous mineral fertilizer containing phosphorus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210194318.2A CN114602421A (en) | 2022-03-01 | 2022-03-01 | Method for preparing low-phosphorus porous structure material |
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| CN202210194318.2A CN114602421A (en) | 2022-03-01 | 2022-03-01 | Method for preparing low-phosphorus porous structure material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116116378A (en) * | 2023-03-15 | 2023-05-16 | 湖北富邦科技股份有限公司 | Preparation method for preparing phosphorus adsorption material by utilizing phosphate rock tailings |
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2022
- 2022-03-01 CN CN202210194318.2A patent/CN114602421A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116116378A (en) * | 2023-03-15 | 2023-05-16 | 湖北富邦科技股份有限公司 | Preparation method for preparing phosphorus adsorption material by utilizing phosphate rock tailings |
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