CN113663686A - Method for preparing photocatalytic material by utilizing lead-zinc tailings and application - Google Patents
Method for preparing photocatalytic material by utilizing lead-zinc tailings and application Download PDFInfo
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- CN113663686A CN113663686A CN202110868318.1A CN202110868318A CN113663686A CN 113663686 A CN113663686 A CN 113663686A CN 202110868318 A CN202110868318 A CN 202110868318A CN 113663686 A CN113663686 A CN 113663686A
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- zinc tailings
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- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 title claims abstract description 27
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000005469 granulation Methods 0.000 claims abstract description 12
- 230000003179 granulation Effects 0.000 claims abstract description 12
- 238000013032 photocatalytic reaction Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000007787 solid Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 11
- 239000011707 mineral Substances 0.000 claims description 11
- 239000003054 catalyst Substances 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000002351 wastewater Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000005065 mining Methods 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims 1
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- 238000004065 wastewater treatment Methods 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000005188 flotation Methods 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 235000013322 soy milk Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/78—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with alkali- or alkaline earth metals
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0063—Granulating
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
-
- 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
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
- C02F2103/327—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters from processes relating to the production of dairy products
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- Chemical Kinetics & Catalysis (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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Abstract
The invention discloses a method for preparing a photocatalytic material by utilizing lead-zinc tailings, which takes dry lead-zinc tailings as a raw material, the lead-zinc tailings are crushed to be below 200 meshes, water is added into the lead-zinc tailings powder for uniform mixing, the mixture is stirred and reacts for 30-45 min at the temperature of 60-150 ℃, then solid-liquid separation is carried out, the solid is soaked in absolute ethyl alcohol for 1-3 h, solid-liquid separation is carried out, and the solid is placed in N2Drying at 45-60 ℃ in atmosphere to obtain a photocatalytic reaction active raw material, adding an immobilization stabilizer into the photocatalytic reaction active raw material, uniformly mixing to obtain a mixture, placing the mixture into a granulator for granulation, and using stoneThe method solves the problem of harm caused by the accumulation of a large amount of lead-zinc tailings, provides cheap raw materials for the field of environment-friendly photocatalytic degradation, and reduces the treatment cost of waste gas and wastewater treatment.
Description
Technical Field
The invention relates to a method for preparing a photocatalytic material by utilizing lead-zinc tailings and application thereof, belonging to the field of resource utilization of solid wastes.
Background
Mineral resources are non-renewable, are the material basis on which human beings live and develop, and are also important guarantees for sustainable development of national economic construction. Although the types of mineral resources in China are complete, most of the mineral resources belong to lean ores and co-associated ores, so that the difficulty of subsequent sorting operation is increased. In recent years, rapid development of the metallurgical industry and the like in China and continuous enlargement of the mine scale enable a large amount of waste rocks, tailings and waste residues discarded in the development and utilization process of mineral resources to increase year by year. The stockpiled tailings occupy a large amount of land, cause serious environmental pollution, destroy the ecological environment and cause waste of a plurality of precious resources. According to incomplete statistics, the stockpiling amount of the nonferrous metal mine tailings in China exceeds 50 hundred million t, and the stockpiling amount still increases at a speed of 5 hundred million t per year. Lead-zinc polymetallic ore resources in China are rich, compounds of copper, silver, gold, bismuth, antimony, selenium, tellurium, tungsten, molybdenum, germanium, gallium, thallium, sulfur and iron, fluorite and the like are often associated in the ore, the lead-zinc polymetallic ore belongs to symbiotic and associated composite ores of various minerals, and has the characteristics of more lean ores, less rich ores, complex mineral composition, fine disseminated granularity and the like, and the sorting difficulty is increased; and the recovery rate of useful minerals is low due to factors such as a separation technology, production equipment performance, economic conditions, a management mode and the like, a lot of symbiotic minerals, associated minerals and valuable elements enter tailings to generate a large amount of tailings, and according to annual identification data of nonferrous metal industry in China, the ore removal amount of lead-zinc ore in China in 2012 is 4615 ten thousand t/year, and the discharge amount of the tailings is about 3387 ten thousand t/year. The comprehensive utilization rate of lead-zinc tailings in China is extremely low, is only about 10%, and is far from the comprehensive utilization rate of 60% in China. The mine tailings are acidified due to high sulfur content in the tailings, and a series of reactions such as heavy metal particle dissolution and the like which are generated along with the acidification aggravate the environmental pollution and become a huge hazard source in local village life. Therefore, the lead-zinc tailing resources are properly treated by adopting a proper method, the comprehensive utilization capacity of the lead-zinc tailing resources is improved, the problem that a large amount of land resources are occupied by tailing stockpiling can be solved, the environmental problem caused by tailings can be solved, the maximization of resource benefits is realized, and the method has important significance for practicing circular economy.
Although a lot of researches on resource utilization of lead-zinc tailings exist at present, due to the low additional value utilization, the lead-zinc tailings are large in accumulation amount and cannot realize comprehensive consumption, and a high additional value utilization technology of the lead-zinc tailings needs to be provided aiming at the problems.
Disclosure of Invention
Aiming at the problems of low utilization rate of solid waste resources, high purification treatment difficulty, complex process flow, high investment, high cost, poor economic feasibility and the like at present, the invention provides a method for preparing a photocatalytic material by utilizing lead-zinc tailings, which reduces the resource pretreatment cost of the lead-zinc tailings, improves the resource potential of the lead-zinc tailings, and solves the current crisis of stockpiling of the lead-zinc tailings2Drying at 45-60 ℃ in an atmosphere to obtain a photocatalytic reaction active raw material, adding an immobilization stabilizer into the photocatalytic reaction active raw material, and uniformly mixing to obtain a mixture, wherein the immobilization stabilizer accounts for 5-25% of the mass of the mixture; and (3) placing the mixture into a granulator for granulation, using lime water with the mass concentration of 1-5% as a spraying agent, wherein the spraying distance is 10-50 cm, and curing the prepared catalyst particles under the conditions of high temperature, high pressure and high humidity to finish the preparation of the photocatalytic material.
The lead-zinc tailings are low-grade ores generated after lead-zinc ore mining or mineral dressing.
The immobilized stabilizer is cement, PVDF or rubber powder.
The curing is carried out at 30-90 ℃, 0.1-3 MPa and humidity of 60-95%, and the curing time is 1-8 h.
The invention also aims to purify the organic wastewater by using the photocatalytic material prepared by the method.
The advantages and effects of the technology of the invention are as follows:
1. the lead-zinc tailings belong to solid waste, and the invention provides a treatment technology for high added value utilization of the lead-zinc tailings;
2. the invention alleviates the problems of higher preparation cost and the like of the existing catalyst;
3. the invention has the advantages of easily obtained raw materials and simple operation.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the invention is not limited to the above-described examples.
Example 1: the method for preparing the photocatalytic material by using the lead-zinc tailings comprises the following steps:
(1) in the embodiment, the lead-zinc tailings are derived from lead-zinc flotation tailings of a concentric lead-zinc concentrating mill with water built in Yunnan province, and the main component of the lead-zinc flotation tailings is Fe2O3 52.11%、CaO 23.77%、SiO27.77%、MnO5.6%、SO3 2.94%、MgO 2.94%、Al2O3 2.1 percent; drying the lead-zinc tailings at 45 ℃, and crushing the lead-zinc tailings to below 200 meshes by using a crusher;
(2) adding 75g of lead-zinc tailing powder into water, mixing uniformly, stirring at 60 ℃ and 100rpm for 45min for reaction, performing solid-liquid separation, soaking the solid in absolute ethyl alcohol for 1h, performing solid-liquid separation, and adding the solid in N2Drying in an oven at 45 ℃ in the atmosphere to prepare a photocatalytic reaction active raw material;
(3) adding 25g of cement into a photocatalytic reaction active raw material, uniformly mixing to obtain a mixture, paving the mixture on a circular granulation flat plate, making the mixture into a spray with the thickness of 1mm, spraying the spray at the position 10cm away from the circular granulation flat plate at the spraying speed of 5m/s, alternately rotating the circular granulation flat plate clockwise and anticlockwise to obtain granular catalyst particles, and then maintaining the granular catalyst particles at the temperature of 30 ℃, the pressure of 0.1MPa and the humidity of 60% for 1 hour to finish the preparation of the photocatalytic material;
10g of the prepared photocatalytic material is placed into 500mL of high-concentration organic wastewater of a milk factory (the total organic matter content is 20%), and after the photocatalytic material is placed under sunlight for 5 hours, the total organic matter content in the water is detected to be 2%, and the visible light catalysis efficiency is good.
Example 2: the method for preparing the photocatalytic material by using the lead-zinc tailings comprises the following steps:
(1) drying the waste lead-zinc tailings in the water-engendering fairy cave at 60 ℃, and crushing the waste lead-zinc tailings to below 200 meshes by using a crusher;
(2) adding water into 95g of lead-zinc tailing powder, uniformly mixing, stirring at 100 ℃ and 600rpm for 40min for reaction, performing solid-liquid separation, soaking the solid in absolute ethyl alcohol for 3h, performing solid-liquid separation, and allowing the solid to stand in N2Drying in an oven at 60 ℃ in the atmosphere to prepare a photocatalytic reaction active raw material;
(3) adding 5g of cement into a photocatalytic reaction active raw material, uniformly mixing to obtain a mixture, paving the mixture on a circular granulation flat plate, making the mixture into a spray with the thickness of 5mm, spraying the spray at a position 20cm away from the circular granulation flat plate at the spraying speed of 1m/s, and alternately rotating the circular granulation flat plate clockwise and anticlockwise to obtain granular catalyst particles, and then maintaining the granular catalyst particles at the temperature of 90 ℃, the pressure of 3MPa and the humidity of 70% for 8 hours to finish the preparation of the photocatalytic material;
15g of the prepared photocatalytic material is placed in 1000mL of high-concentration organic wastewater (the total organic matter content is 30%) of a coffee factory, and after the material is placed under sunlight for 8 hours, the total organic matter content in the water is detected to be 5%, and the visible light catalysis efficiency is good.
Example 3: the method for preparing the photocatalytic material by using the lead-zinc tailings comprises the following steps:
(1) drying lead-zinc flotation tailings of a Yunnan water-building concentric lead-zinc concentrating mill at 50 ℃, and crushing the tailings to below 200 meshes by a crusher;
(2) adding 80g of lead-zinc tailing powder into water, mixing uniformly, stirring at 140 ℃ and 400rpm for reaction for 30min, performing solid-liquid separation, soaking the solid in absolute ethyl alcohol for 2h, performing solid-liquid separation, and allowing the solid to stand in N2Drying in an oven at 50 ℃ in the atmosphere to prepare a photocatalytic reaction active raw material;
(3) adding 20g of rubber powder into a photocatalytic reaction active raw material, uniformly mixing to obtain a mixture, paving the mixture on a circular granulation flat plate, making the mixture into a spray with the thickness of 3mm by using lime water with the mass concentration of 3%, spraying the spray at a position 15cm away from the circular granulation flat plate at the spraying speed of 2m/s, alternately rotating the circular granulation flat plate clockwise and anticlockwise to obtain granular catalyst particles, and then maintaining the granular catalyst particles at the conditions of 60 ℃, 2MPa and the humidity of 90% for 5 hours to finish the preparation of the photocatalytic material;
20g of the prepared photocatalytic material is put into high-concentration organic wastewater (total organic matter content is 40%) of a 1L soymilk factory, and after the photocatalytic material is placed under sunlight for 6 hours, the total organic matter content in the water is detected to be 10%, and the visible light catalysis efficiency is good.
Claims (5)
1. A method for preparing a photocatalytic material by utilizing lead-zinc tailings is characterized by comprising the following steps: crushing dry lead-zinc tailings serving as a raw material to below 200 meshes, adding water into the lead-zinc tailings powder, uniformly mixing, stirring at 60-150 ℃ for reaction for 30-45 min, performing solid-liquid separation, soaking the solid in absolute ethyl alcohol for 1-3 h, performing solid-liquid separation, and adding the solid in N2Drying at 45-60 ℃ in an atmosphere to obtain a photocatalytic reaction active raw material, adding an immobilization stabilizer into the photocatalytic reaction active raw material, and uniformly mixing to obtain a mixture, wherein the immobilization stabilizer accounts for 5-25% of the mass of the mixture; and (3) placing the mixture into a granulator for granulation, using lime water with the mass concentration of 1-5% as a spraying agent, and placing the prepared catalyst particles under the conditions of high temperature, high pressure and high humidity for maintenance to finish the preparation of the photocatalytic material.
2. The method for preparing the photocatalytic material by utilizing the lead-zinc tailings as claimed in claim 1, wherein the method comprises the following steps: the lead-zinc tailings are low-grade ores generated after lead-zinc ore mining or mineral dressing.
3. The method for preparing the photocatalytic material by utilizing the lead-zinc tailings as claimed in claim 1, wherein the method comprises the following steps: the immobilized stabilizer is cement, PVDF or rubber powder.
4. The method for preparing the photocatalytic material by utilizing the lead-zinc tailings as claimed in claim 1, wherein the method comprises the following steps: curing for 1-8 h at 30-90 ℃, 0.1-3 MPa and humidity of 60-95%.
5. The use of the photocatalytic material prepared by the method for preparing the photocatalytic material by using the lead-zinc tailings as described in any one of claims 1 to 4 for purifying organic wastewater.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115414943A (en) * | 2022-09-29 | 2022-12-02 | 山西农业大学 | Photocatalytic material prepared from iron tailings and method and application thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054266A (en) * | 2007-05-30 | 2007-10-17 | 北京科技大学 | Method of preparing photoelectrocatalysis material zinc ferrite film from lead-zinc tailings |
| CN106365305A (en) * | 2016-10-31 | 2017-02-01 | 郑州大学环境技术咨询工程公司 | Preparing method and application of ecological matrix particles for river water body enhanced nitrogen removal |
| CN106746980A (en) * | 2016-12-07 | 2017-05-31 | 山东交通学院 | A kind of utilization red mud solid waste prepares the method with photo-catalysis function cement mortar |
| CN110092438A (en) * | 2019-06-05 | 2019-08-06 | 昆明理工大学 | A kind of method of electrolytic manganese residues as photocatalyst treatment organic wastewater |
| CN110482963A (en) * | 2019-09-18 | 2019-11-22 | 黑龙江大学 | A kind of high-strength cement base composite photocatalyst material and preparation method thereof |
| CN110759386A (en) * | 2019-11-26 | 2020-02-07 | 东北大学秦皇岛分校 | α -Fe taking iron tailings as raw material2O3Preparation method of nano photocatalytic material |
| CN111013526A (en) * | 2019-11-18 | 2020-04-17 | 昆明理工大学 | Antimony tailing based adsorption material and preparation method and application thereof |
| CN111408361A (en) * | 2020-03-30 | 2020-07-14 | 陕西科技大学 | Formaldehyde degradation material based on waste lead-zinc ore tailings and preparation method thereof |
-
2021
- 2021-07-30 CN CN202110868318.1A patent/CN113663686A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054266A (en) * | 2007-05-30 | 2007-10-17 | 北京科技大学 | Method of preparing photoelectrocatalysis material zinc ferrite film from lead-zinc tailings |
| CN106365305A (en) * | 2016-10-31 | 2017-02-01 | 郑州大学环境技术咨询工程公司 | Preparing method and application of ecological matrix particles for river water body enhanced nitrogen removal |
| CN106746980A (en) * | 2016-12-07 | 2017-05-31 | 山东交通学院 | A kind of utilization red mud solid waste prepares the method with photo-catalysis function cement mortar |
| CN110092438A (en) * | 2019-06-05 | 2019-08-06 | 昆明理工大学 | A kind of method of electrolytic manganese residues as photocatalyst treatment organic wastewater |
| CN110482963A (en) * | 2019-09-18 | 2019-11-22 | 黑龙江大学 | A kind of high-strength cement base composite photocatalyst material and preparation method thereof |
| CN111013526A (en) * | 2019-11-18 | 2020-04-17 | 昆明理工大学 | Antimony tailing based adsorption material and preparation method and application thereof |
| CN110759386A (en) * | 2019-11-26 | 2020-02-07 | 东北大学秦皇岛分校 | α -Fe taking iron tailings as raw material2O3Preparation method of nano photocatalytic material |
| CN111408361A (en) * | 2020-03-30 | 2020-07-14 | 陕西科技大学 | Formaldehyde degradation material based on waste lead-zinc ore tailings and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 丁德馨 等, 哈尔滨工程大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115414943A (en) * | 2022-09-29 | 2022-12-02 | 山西农业大学 | Photocatalytic material prepared from iron tailings and method and application thereof |
| CN115414943B (en) * | 2022-09-29 | 2023-09-08 | 山西农业大学 | Photocatalytic material prepared from iron tailings, and method and application thereof |
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