CN116178041A - Porous ceramic based on purple Tao Feiliao and preparation method thereof - Google Patents
Porous ceramic based on purple Tao Feiliao and preparation method thereof Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 10
- 239000011148 porous material Substances 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 3
- 238000004898 kneading Methods 0.000 claims abstract description 3
- 239000004568 cement Substances 0.000 claims abstract 2
- 239000004927 clay Substances 0.000 claims description 19
- MCPLVIGCWWTHFH-UHFFFAOYSA-L methyl blue Chemical compound [Na+].[Na+].C1=CC(S(=O)(=O)[O-])=CC=C1NC1=CC=C(C(=C2C=CC(C=C2)=[NH+]C=2C=CC(=CC=2)S([O-])(=O)=O)C=2C=CC(NC=3C=CC(=CC=3)S([O-])(=O)=O)=CC=2)C=C1 MCPLVIGCWWTHFH-UHFFFAOYSA-L 0.000 claims description 19
- 239000010865 sewage Substances 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 11
- 229910052793 cadmium Inorganic materials 0.000 claims description 7
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 7
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 claims description 7
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 241001408630 Chloroclystis Species 0.000 claims description 2
- 239000010815 organic waste Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
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- 238000000197 pyrolysis Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 44
- 230000000694 effects Effects 0.000 abstract description 14
- 229910010293 ceramic material Inorganic materials 0.000 abstract description 12
- 229910052582 BN Inorganic materials 0.000 abstract description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052878 cordierite Inorganic materials 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 abstract description 3
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- 238000001514 detection method Methods 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2093—Ceramic foam
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/36—Glass starting materials for making ceramics, e.g. silica glass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention relates to a porous ceramic based on purple Tao Feiliao and a preparation method thereof, wherein the method comprises the following steps: adding water into the cement for softening, adding violet Tao Feiliao and glass powder, and preparing pug; kneading uniformly, and discharging bubbles to form porous ceramic mud; drawing blank to form into pot shape or ceramic ball; drying, calcining, preserving heat, and cooling to room temperature to form the porous ceramic. Compared with the porous materials prepared by using more materials such as hexagonal boron nitride, cordierite and the like with complex preparation process and high cost, the porous ceramic material has the advantages of simple preparation method, low cost and strong filtering and adsorbing effects, comprehensively expands the application of the water-building purple ceramic in new materials, and has important application value for sustainable development of green.
Description
Technical Field
The invention belongs to the technical field of ceramics, and particularly relates to a porous ceramic based on purple Tao Feiliao and a preparation method thereof, wherein the porous ceramic has a water filtering function.
Background
Water pollution is a very serious and urgent problem to be solved in the human sustainable development process. At present, the main problems faced by sewage treatment are: the sewage filtering material has the disadvantages of high preparation cost, low treatment efficiency, incapability of realizing recycling and the like. Materials used for sewage treatment generally include porous carbon materials, cotton fiber materials, inorganic ceramic glass materials, and the like.
The porous ceramic has the characteristics of high mechanical strength, corrosion resistance, high temperature resistance, high pressure resistance and the like, the preparation method is more, the pore-forming agent adding method is one of the common methods, and the method comprises the following steps: the pore-forming agent has high price, and the additive can generate toxic and harmful substances, and the pore-forming method is complex and tedious. The prior porous ceramic materials for sewage treatment have better treatment effects of hexagonal boron nitride porous materials, cordierite porous materials and the like, but also have the problems of high raw material price and high energy consumption caused by high-temperature calcination.
The Jianshui purple ceramic is a traditional daily article ceramic produced by Jianshui county in Yunnan, and is mainly used as tea sets, decorative ornaments, cooking utensils and the like at present. The purple pottery often has defective waste materials in the production process, and the waste materials are directly discarded all the time, so that not only the land is occupied, but also the fragments can generate potential harm for stabbing people and animals. Raw materials of the Jianshui purple pottery are low in price, but are not well utilized.
Disclosure of Invention
The experimental detection shows that: the water-building purple ceramic material has good filtering and adsorbing effects on substances such as Chemical Oxygen Demand (COD), hexavalent chromium, cadmium, lead and methyl blue in sewage. Therefore, the inventor uses the purple Tao Feiliao as a pore-forming agent to manufacture the porous ceramic material for sewage filtration, thereby completing the invention, and the porous ceramic can be recycled, thereby having important application value and significance.
Accordingly, in one aspect, the present invention provides a method of preparing a porous ceramic based on violet Tao Feiliao, the method comprising:
1) Weighing Jianshui clay, adding water for softening, adding violet Tao Feiliao and glass powder, and preparing a clay material;
2) Kneading the pug evenly, and properly extruding and discharging bubbles to form porous ceramic pugs;
3) Shaping the porous Tao Nila blank into a pot shape or preparing a ceramic ball, repairing the blank after the blank is semi-dried, and adjusting the wall thickness of the pot-shaped blank to be 2-5mm or the diameter of the ceramic ball to be 1cm;
4) And after the green body is dried, calcining to 1100 ℃, preserving heat at 1100 ℃ for 30 minutes, and cooling to room temperature to form the porous ceramic.
Further, in the step 1), the water-building clay is clay with the mesh number of 150-250 meshes, which is prepared from clay raw materials in Jianshui county of Yunnan province.
Further, in the step 1), the weight ratio of the water construction clay to the purple ceramic waste is 700:40-60, preferably 700:60.
further, in step 1), the maximum diameter of the violet Tao Feiliao is 3mm or less, and preferably the fineness of the violet Tao Feiliao is within 30 mesh.
Further, in the step 3), the wall thickness of the pot-shaped green body is adjusted to be 2-3mm.
In another aspect, the invention relates to a porous ceramic obtained by the above-described preparation method.
Further, the pores of the porous ceramic are uniformly distributed.
In a further aspect, the invention relates to the use of said porous ceramic in sewage treatment.
Further, in the application, the porous ceramic adsorbs organic waste, hexavalent chromium, cadmium, lead in sewage.
Further, the porous ceramic adsorbs methyl blue or an organic matter similar to methyl blue, preferably, after adsorption saturation, the adsorbed organic matter is pyrolyzed by calcining the porous ceramic to 600-700 ℃, so that the porous ceramic is reused.
Technical effects
According to the invention, the new ceramic filtering material is developed by using the water construction violet Tao Feiliao and pug, compared with the porous material prepared by using more hexagonal boron nitride, cordierite and other materials with complex preparation process and high cost at present, the porous ceramic material prepared by using the water construction violet Tao Feiliao and pug has the advantages of simple preparation method, low cost and strong filtering and adsorbing effects, not only is the filtering material effectively used for sewage treatment prepared, but also the recycling of the purple ceramic waste is realized, the application of the water construction purple ceramic in new materials is comprehensively expanded, and the method has important application value for green sustainable development.
In addition, the water construction purple Tao Feiliao is nontoxic and harmless, and does not generate toxic and harmful substances in the high-temperature calcination process, and the water construction purple Tao Feiliao can be used as a pore-forming agent in the purple ceramic pug to increase purple Tao Kongjing. The experimental detection shows that: the water-building purple ceramic material has good filtering and adsorbing effects on substances such as Chemical Oxygen Demand (COD), hexavalent chromium, cadmium, lead and methyl blue in sewage, and particularly can be decomposed at high temperature through calcination after being saturated in adsorption when organic substances such as methyl blue are adsorbed, so that the porous ceramic can be recycled.
Drawings
FIG. 1 is a porous ceramic material tank body prepared in example 1;
FIG. 2 is a porous ceramic material tank body prepared in example 2;
FIG. 3 is a porous ceramic sphere filtration column prepared in example 3;
FIG. 4 is a porous ceramic material tank body prepared in example 4;
FIG. 5 is a porous ceramic material tank body prepared in example 5;
FIG. 6 shows the effect of starting wetting of the tank after 3-5 minutes of the filtration experiment in experimental example 2 methyl blue filtration experiment;
FIG. 7 shows the effect of the change from white to light color of the outer wall of the tank body after 21 minutes of the filtering experiment in the methyl blue filtering experiment of experimental example 2;
FIG. 8 shows the effect of changing the whole outer wall of the tank body from white to deep blue after the filtering experiment is performed for 70-80 minutes in the methyl blue filtering experiment of experimental example 2;
FIG. 9 is a graph showing the comparison of the tank filtrate collected after the filtration experiment was performed for 6.5 hours with the unfiltered methyl blue solution in the experimental example 2 methyl blue filtration experiment;
FIG. 10 shows the effect of re-firing a porous ceramic can to 600-700℃for natural cooling after filtration in the methyl blue filtration experiment of Experimental example 2.
Detailed Description
The following description of the preferred embodiments of the present invention refers to the accompanying drawings, which make the technical contents thereof more clear and easy to understand. The present invention may be embodied in many different forms of embodiments and the scope of the present invention is not limited to only the embodiments described herein.
Example 1
The steps are as follows: 700 g of Jian shui ceramic clay is weighed, a small amount of water is added for softening, tao Feiliao g of purple Tao Feiliao g and 15 g of glass powder are added, the clay is kneaded uniformly, and bubbles are properly extruded and discharged. And (3) forming the porous Tao Nila blank into a pot shape, repairing the blank after the blank is semi-dried, adjusting the wall thickness of the blank to 2-3mm, calcining the blank to 1100 ℃ after the blank is dried, and cooling to room temperature after the blank is subjected to heat preservation at 1100 ℃ for 30 minutes.
A photograph of the porous ceramic is shown in FIG. 1. Filtration test was performed with distilled water, and the pot-shaped porous ceramic prepared in example 1 had a filtration rate of 3.49mL/h.
Example 2
The steps are as follows: 700 g of Jian shui ceramic clay is weighed, a small amount of water is added for softening, tao Feiliao g of purple Tao Feiliao g and 15 g of glass powder are added, the clay is kneaded uniformly, and bubbles are properly extruded and discharged. And (3) forming the porous Tao Nila blank into a pot shape, repairing the blank after the blank is semi-dried, adjusting the wall thickness of the blank to 2-3mm, calcining the blank to 1100 ℃ after the blank is dried, and cooling to room temperature after the blank is subjected to heat preservation at 1100 ℃ for 30 minutes.
A photograph of the porous ceramic is shown in FIG. 2. Filtration test was performed with distilled water, and the pot-shaped porous ceramic prepared in example 2 had a filtration rate of 2mL/h. As is clear from comparison of example 1, the porous ceramic filter speed is increased by adding more violet Tao Feiliao to the porous ceramic slurry.
Example 3
The steps are as follows: 700 g of Jian shui ceramic clay is weighed, a small amount of water is added for softening, tao Feiliao g of purple Tao Feiliao g and 15 g of glass powder are added, the clay is kneaded uniformly, and bubbles are properly extruded and discharged. The porous ceramic mud is made into porous ceramic balls with the diameter of 1cm, the porous ceramic balls are calcined to 1100 ℃ after the green body is dried, and the porous ceramic balls are cooled to room temperature after being kept at 1100 ℃ for 30 minutes. And (3) putting the porous ceramic balls cooled to room temperature into cylindrical hard rubber attapulgite to manufacture the porous ceramic ball filtering column.
A photograph of the porous ceramic is shown in FIG. 3. The porous ceramic ball filtration column prepared in example 3 was the fastest filtration rate compared to examples 1 and 2, when the filtration test was performed with distilled water.
Example 4
The steps are as follows: 700 g of Jian shui ceramic clay is weighed, a small amount of water is added for softening, tao Feiliao g of purple Tao Feiliao g and 15 g of glass powder are added, the clay is kneaded uniformly, and bubbles are properly extruded and discharged. And (3) forming the porous Tao Nila blank into a pot shape, repairing the blank after the blank is semi-dried, adjusting the wall thickness of the blank to 4-5mm, calcining the blank to 1100 ℃ after the blank is dried, and cooling to room temperature after the blank is subjected to heat preservation at 1100 ℃ for 30 minutes.
A photograph of the porous ceramic is shown in FIG. 4. The filtration test was conducted with distilled water, and the pot-shaped porous ceramic prepared in example 4 had a filtration rate of 1.11mL/h, which was slower than that of the porous ceramic prepared in example 1, compared to example 1.
Example 5
The steps are as follows: 700 g of Jian shui ceramic clay is weighed, a small amount of water is added for softening, tao Feiliao g of purple Tao Feiliao g (the purple Tao Feiliao used in other embodiments of the invention is 30 meshes or less in thickness) with the mesh number of more than 30 meshes and the maximum diameter of not more than 3mm and 15 g of glass powder are added, the clay is kneaded uniformly, and bubbles are properly extruded and discharged. And (3) forming the porous Tao Nila blank into a pot shape, repairing the blank after the blank is semi-dried, adjusting the wall thickness of the blank to 4-5mm, calcining the blank to 1100 ℃ after the blank is dried, and cooling to room temperature after the blank is subjected to heat preservation at 1100 ℃ for 30 minutes.
A photograph of the porous ceramic is shown in FIG. 5. The pot-shaped porous ceramic prepared in example 5 had pores unevenly distributed, and a part of the pot region had a case of cracking around the pores. As is clear from comparison with example 4, the addition of clinker having a mesh size of more than 30 mesh to the clay tends to cause local cracking and breakage of the porous green body.
Experimental example 1
And (3) sewage filtration experiment:
the porous ceramic material (porous ceramic tank) prepared in example 1 was used to filter sewage, and the content of the target filtrate in the sewage before and after filtration was detected, and the target filtrate detection items included: chemical Oxygen Demand (COD), hexavalent chromium, cadmium and lead, wherein the Chemical Oxygen Demand (COD) and hexavalent chromium are detected in parallel with three groups, and the cadmium and lead contents are detected in one group.
And 5-6L of severely polluted water (namely water with medium concentration after the most index concentration of raw water is far processed) is taken, particles in sewage are filtered by filter paper to obtain stock solution, and the content of each target detection water quality item in the stock solution is detected.
Porous ceramic tank filter (diameter 7.2cm, height 8.4 cm) was produced: taking 0.5-1L of stock solution, pouring the stock solution into a tank body, standing and filtering for 5-10 days, collecting filtrate, and detecting the content of each target detection item.
The results of the sewage filtration experiments are shown in the following table 1:
TABLE 1
According to the sewage filtering experimental result, the porous ceramic material prepared by the invention has filtering and adsorbing effects on Chemical Oxygen Demand (COD), hexavalent chromium, cadmium and lead in sewage.
Experimental example 2
Methyl blue filtration experiment
Preparing 500mL of methyl blue solution with the concentration of 0.004g/mL, pouring 410mL of the solution into a porous ceramic tank body prepared from the porous ceramic of the example 1, filtering, wetting the outer surface of the porous tank body after 3 minutes (the filtered liquid is colorless at the moment), and starting to show light blue after 21 minutes (the color of the filtered liquid is lighter than that of the liquid which is not filtered in the tank body), wherein the white outer wall of the tank body is changed from partial blue; the liquid filtered out after 70 minutes had started was dark blue (the color of the filtered liquid was lighter than the liquid that had not been filtered in the tank, but darker than the liquid that had been filtered out at 21 minutes); after 6.5 hours, the whole white outer wall of the tank body turns blue; and (3) putting the whole blue-changed tank body into an electric kiln for re-burning to 600-700 ℃ (the heating rate is 4-5 ℃/min), recovering the tank body to the original white color, and repeatedly carrying out a filtering experiment, wherein the porous ceramic tank body still has the filtering adsorption effect on the methyl blue.
According to the methyl blue filtration experiment, the porous ceramic has the effect of filtering and adsorbing methyl blue or organic matters similar to the methyl blue, and the filtering and adsorbing effect can reach saturation. After reaching the filtration adsorption saturation, the porous material is calcined to 600-700 ℃ to decompose the adsorbed organic matters at high temperature, thereby realizing the recycling
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention without requiring creative effort by one of ordinary skill in the art. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (10)
1. A method of preparing a porous ceramic based on violet Tao Feiliao, the method comprising:
1) Weighing Jianshui clay, adding water for softening, adding violet Tao Feiliao and glass powder, and preparing a clay material;
2) Kneading the pug evenly, and properly extruding and discharging bubbles to form porous ceramic pugs;
3) Shaping the porous Tao Nila blank into a pot shape or preparing a ceramic ball, repairing the blank after the blank is semi-dried, and adjusting the wall thickness of the pot-shaped blank to be 2-5mm or the diameter of the ceramic ball to be 1cm;
4) And after the green body is dried, calcining to 1100 ℃, preserving heat at 1100 ℃ for 30 minutes, and cooling to room temperature to form the porous ceramic.
2. The preparation method of claim 1, wherein in step 1), the weight ratio of the cement, the violet Tao Feiliao and the glass frit is 700:40-60:15, preferably 700:60:15.
3. The method of claim 1, wherein in step 1), the fineness of violet Tao Feiliao is within 30 mesh.
4. The method of claim 1, wherein in step 3), the thickness of the can-shaped blank is adjusted to 2-3mm.
5. A porous ceramic obtained by the production method according to any one of claims 1 to 4.
6. The porous ceramic of claim 5, wherein the pores of the porous ceramic are uniformly distributed.
7. The use of the porous ceramic according to claim 5 in sewage treatment.
8. The use according to claim 7, wherein the porous ceramic adsorbs organic waste, hexavalent chromium, cadmium, lead in sewage.
9. The use according to claim 7, wherein the porous ceramic adsorbs methyl blue or an organic substance similar to methyl blue.
10. The use according to claim 9, wherein the porous ceramic is recycled by pyrolysis of the adsorbed organics after saturation of adsorption by calcining the porous ceramic to 600-700 ℃.
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