CN103553704B - Method for preparing high-temperature dust removal ceramic filter pipe by utilizing andalusite - Google Patents
Method for preparing high-temperature dust removal ceramic filter pipe by utilizing andalusite Download PDFInfo
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- CN103553704B CN103553704B CN201310551493.3A CN201310551493A CN103553704B CN 103553704 B CN103553704 B CN 103553704B CN 201310551493 A CN201310551493 A CN 201310551493A CN 103553704 B CN103553704 B CN 103553704B
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Abstract
The invention relates to a method for preparing a high-temperature dust removal ceramic filter pipe by utilizing andalusite as a main raw material. A method for preparing high-temperature dust removal ceramic filter pipe by utilizing andalusite is characterized by comprising the following steps: (1) crushing raw materials; (2) proportioning the raw materials, wherein the percentages by weight of the raw materials are as follows: 60-80% of andalusite, 10-20% of high temperature adhesive, 5-10% of clay and 5-20% of pore-forming agent; and selecting the andalusite, the high temperature adhesive, the clay and the pore-forming agent; (3) mixing the raw materials; (4) extruding a blank; (5) drying the blank; (6) sintering the blank; and (7) coating a filtration membrane: coating a layer of mullite fiber and andalusite slurry on the outer surface of a ceramic filter pipe supporting body to form the filtration membrane, wherein the thickness of the filtration membrane is 100-200 microns; drying the filtration membrane in a microwave oven for 10-30 minutes, and sintering the filtration membrane in a shuttle kiln at 1240-1300 DEG C to prepare the high-temperature dust removal ceramic filter pipe. The ceramic filter pipe prepared by the method not only has the advantages of high high-temperature strength, good thermal shock resistance and high filtration efficiency, but also has a relatively low manufacturing cost.
Description
Technical field
The present invention relates to a kind of take andaluzite as the method that main raw material prepares high-temperature dust removal ceramic filter tube.This strainer tube is mainly used in dedusting and the purification of all kinds of high-temperature flue gas, belongs to environmental protection and field of new.
Background technology
High-temperature dust removal porcelain filtration technology is a new technology in Environmental-protecting dust-removing field.Compared with the technology such as cyclone dust removal, electrostatic precipitation of routine, this technology is more suitable for removing the dust in high temperature (more than 800 DEG C) and corrodibility industrial gasses, and large-scale application is in high temperature dust removal field such as integrated coal gasification combined cycle systems (IGCC).Namely the key core material of this technology is high-temperature dust removal ceramic filter tube.Its dust-cleaning principle is the gap utilizing porous ceramic pipe, stops the dust in industrial gasses, makes it to be gathered in vitrified pipe outer wall, and the industrial gasses of cleaning to pass through vitrified pipe emptying or send to recycling; The dust being gathered in vitrified pipe outer wall acquires a certain degree and by pulse backblowing, dust will be made to depart from vitrified pipe outer wall, thus make vitrified pipe possess again the function of Chalk-dust filtering.
At present, high-temperature dust removal ceramic filter tube general silicon carbide, trichroite and mullite are the preparations such as raw material.It is the method for raw material for the preparation of high temperature fume dust removal ceramic filter tube with silicon carbide, mullite etc. that U.S. patent Nos " CERAMIC FILTER ELEMENT " (US20110058990A1) discloses a kind of.It is that main raw material has prepared the method for ceramic filter tube with high purity aluminium oxide that Japanese invention patent " CERAMIC FILTER " (JP63051914A) discloses a kind of.Chinese invention patent " Hot Gas Cleaning Using For Refractory Ceramics Filter Element and preparation method thereof " (CN1569306A) discloses a kind of take trichroite as the method that main raw material prepares ceramic filter tube.It take mullite as the method that main raw material prepares high-temperature gas porcelain filter that Chinese invention patent " a kind of high-temperature gas filter supporting body and preparation method thereof " (CN101628195A) discloses a kind of.Silicon carbide ceramic physical strength and heat-shock resistance are better, but high-temperature oxidation resistant and corrosion resistance poor.Mullite ceramic pipe physical strength and corrosion-resistant can be better, but heat-shock resistance is poor.Cordierite ceramic pipe heat-shock resistance is better, and physical strength is poor.Silicon carbide, trichroite and mullite all need artificial pre-burning to synthesize, and the cost therefore preparing vitrified pipe is higher.
Andaluzite is a kind of aluminosilicate native crystal mineral, there is higher physical strength and good high volume stability, creep resistance and oxidation-resistance, not needing before using to carry out pre-burning, is the high quality raw material of the high-grade refractory materials of preparation and industrial ceramics, relative low price.It is that main raw material prepares honeycomb ceramic cast filter with andaluzite that Chinese invention patent " a kind of method utilizing andaluzite to prepare honeycomb ceramic cast filter " (CN102320841A) discloses a kind of, and this product has good resistance to elevated temperatures and heat-shock resistance concurrently.Japanese invention patent " CERAMIC BURNER FOR USE IN HOT-AIR OVEN " (JP57124604A) disclose a kind of with andaluzite and sillimanite etc. be main raw material for the preparation of the ceramic burner (nozzle) in hotblast stove, illustrate andaluzite be adapted at high-temperature severe environment use.
Summary of the invention
The object of this invention is to provide a kind of method utilizing andaluzite to prepare high-temperature dust removal ceramic filter tube, ceramic filter tube prepared by the method not only has the advantage that hot strength is high, thermal shock resistance good, filtration efficiency is high, and manufacturing cost relative moderate.
To achieve these goals, the technical solution used in the present invention is: a kind of method utilizing andaluzite to prepare high-temperature dust removal ceramic filter tube, is characterized in that it comprises the steps:
1.
raw material crushing:it is below 1mm that andaluzite, high-temperature agglomerant, clay and pore-forming material four kinds of raw materials are crushed to particle diameter with crusher or powder beater respectively; Then andaluzite, high-temperature agglomerant are used ball mill grinding 4h ~ 12h respectively, cross 200 ~ 350 mesh sieves (described high-temperature agglomerant and pore-forming material all needed 200 ~ 350 mesh sieves) respectively, for subsequent use;
Described high-temperature agglomerant is one in talcum, feldspar, glass powder or any two above (containing any two) mixture in any proportion above-mentioned; Described clay is one in camwood knag, wilkinite, kaolin or any two above (containing any two) mixture in any proportion above-mentioned; Described pore-forming material is one in Graphite Powder 99, wood chip, carbon black or any two above (containing any two) mixture in any proportion above-mentioned;
2.
proportioning raw materials:shared by each raw material, weight percentage is: andaluzite 60 ~ 80%, high-temperature agglomerant 10 ~ 20%, clay 5 ~ 10%, and pore-forming material 5 ~ 20%, chooses andaluzite, high-temperature agglomerant, clay and pore-forming material; Described andaluzite need use by granular size collocation, and its grating is: 280 ~ 320 μm, 40 ~ 60wt%; 20 ~ 45 μm, 60 ~ 40wt%;
3.
raw material mixes:andaluzite, high-temperature agglomerant, clay and pore-forming material are mixed in kneader, obtains compound; Water-soluble binder, lubricant and water is added again in compound, the add-on of water-soluble binder is 3 ~ 8% of mixture quality, the add-on of lubricant is 2 ~ 5% of mixture quality, the add-on of water is 14 ~ 18% of mixture quality, mixing 30min, use vacuum deairing machine pugging again, old 24h, obtains old good pug;
Described water-soluble binder is one in carboxymethyl cellulose, polyvinyl alcohol, water glass or any two above (containing any two) mixture in any proportion above-mentioned; Described lubricant is one in tung oil, soya-bean oil or both any scalemic thereof above-mentioned;
4.
base substrate is extruded:extruded by forcing machine by old good pug, it is 1000 ~ 3000mm that cutting obtains length, and external diameter is 40 ~ 100mm, and internal diameter is the vitrified pipe base substrate of 20 ~ 60mm; Forcing machine extrusion pressure is 3-8MPa;
5.
body drying:the vitrified pipe base substrate extruded is put into microwave oven to shape 20-45min, then put into 120 DEG C of dry 1-2h of infrared drying oven, microwave power is 5kW, and frequency is 2450MHz ± 50MHz;
6.
base substrate burns till:dried base substrate is put into shuttle kiln, burns till (temperature rise rate 3 ~ 5 DEG C/min, firing time 20 ~ 30h) through 1300-1500 DEG C and obtain ceramic filter tube supporter;
7. spray coated filter membrane:(mullite fiber and andaluzite mass ratio are 1:2 to spray one deck mullite fiber and andaluzite slurry at ceramic filter tube supporter outside surface, water content is 40% of total mass), form filtering membrane, the thickness of filtering membrane (plated film) is 100 ~ 200 μm, through microwave oven drying 10 ~ 30mim, put into shuttle kiln and burn till in 1240 ~ 1300 DEG C that (temperature rise rate 5 DEG C/min, the firing time 10 ~ 15 h)
,prepare high-temperature dust removal ceramic filter tube (finished product).
After tested, softening temperature >=1300 DEG C of high-temperature dust removal ceramic filter tube of the present invention, 1000 DEG C ~ 20 DEG C anti-thermal shocks circulate and do not ftracture for 8 times, ultimate compression strength >=40MPa, produce the efficiency of dust collection of flue gas up to 99.5% to power plant and Cement industry etc.
High-temperature dust removal ceramic filter tube of the present invention is suitable for removing the dust in high temperature (more than 800 DEG C) and corrodibility industrial gasses.
The invention has the beneficial effects as follows:
1. relative inexpensiveness.Andaluzite is a kind of native crystal body, and aboundresources is cheap, does not need pre-synthesis, therefore the present invention saves more than 1/3rd than expensive silicon carbide, synthesis of dichroite matter and mullite synthesizing matter ceramic filter tube on raw materials cost.
2. Thermal Synthetic is functional.High-temperature dust removal ceramic filter tube main raw material prepared by the present invention is andaluzite, it can be converted into mullite under high temperature action, the present invention makes it in-situ preparation trichroite, and organically combine with mullite, product is made to have excellent anti-corrosion property at high temperature and heat-shock resistance concurrently, hot strength is high, shows more excellent in high-temperature dust removal environment.
3. strainability is better.High-temperature dust removal ceramic filter tube prepared by the present invention has carried out meticulous gradient design to its pore texture, the aperture of rete is 8 ~ 15 μm, the aperture of supporter is 40 ~ 100 μm, form the graded pore structure of tube wall, filtration efficiency is high, resistance drop is little, the excellent effect (namely filtration efficiency is high) of Chalk-dust filtering.
The present invention to atmospheric environment protection and save energy significant.
Accompanying drawing explanation
Fig. 1 is the electron-microscope scanning figure of high-temperature dust removal ceramic filter tube.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1
Utilize andaluzite to prepare a method for high-temperature dust removal ceramic filter tube, it comprises the steps:
1.
raw material crushing:be below 1mm with crusher in crushing to particle diameter respectively by andaluzite, high-temperature agglomerant, clay and pore-forming material four kinds of raw materials; Then andaluzite, high-temperature agglomerant are used ball mill grinding 4h respectively, cross 200 mesh sieves (described high-temperature agglomerant and pore-forming material all needed 200 mesh sieves) respectively, for subsequent use;
Described high-temperature agglomerant is talcum; Described clay is camwood knag; Described pore-forming material is Graphite Powder 99;
2.
proportioning raw materials:shared by each raw material, weight percentage is: andaluzite 60%, high-temperature agglomerant 10%, clay 10%, and pore-forming material 20%, chooses andaluzite, high-temperature agglomerant, clay and pore-forming material; Described andaluzite need use by granular size collocation, and its grating is: 280 ~ 320 μm, 40wt%; 20 ~ 45 μm, 60wt%;
3.
raw material mixes:andaluzite, high-temperature agglomerant, clay and pore-forming material are mixed in kneader, obtains compound; Water-soluble binder, lubricant and water is added again in compound, the add-on of water-soluble binder is 3% of mixture quality, the add-on of lubricant is 2% of mixture quality, the add-on of water is 14% of mixture quality, mixing 30min, use vacuum deairing machine pugging again, old 24h, obtains old good pug;
Described water-soluble binder is carboxymethyl cellulose; Described lubricant is tung oil;
4.
base substrate is extruded:extruded by forcing machine by old good pug, it is 1000mm that cutting obtains length, and external diameter is 40mm, and internal diameter is the vitrified pipe base substrate of 20mm; Forcing machine extrusion pressure is 3MPa;
5.
body drying:the vitrified pipe base substrate extruded is put into microwave oven to shape 20min, then put into 120 DEG C of dry 1h of infrared drying oven, microwave power is 5kW, and frequency is 2450MHz ± 50MHz;
6.
base substrate burns till:dried base substrate is put into shuttle kiln, burns till (temperature rise rate 3 DEG C/min, firing time 20h) through 1300 DEG C, obtain ceramic filter tube supporter;
7. spray coated filter membrane:one deck mullite fiber and andaluzite slurry (mullite fiber: andaluzite mass ratio is 1:2 is sprayed at ceramic filter tube supporter outside surface, water content is 40% of total mass), form filtering membrane, the thickness of filtering membrane (plated film) is 100 ~ 200 μm, through the dry 10mim of microwave oven, put into shuttle kiln and burn till in 1240 DEG C that (temperature rise rate 5 DEG C/min, the firing time 10 h), prepares high-temperature dust removal ceramic filter tube (finished product).
Fig. 1 be observe between film and matrix in conjunction with situation.
After tested, softening temperature >=1300 DEG C (hot strength is high) of high-temperature dust removal ceramic filter tube of the present invention, 1000 DEG C ~ 20 DEG C anti-thermal shocks circulate and do not ftracture for 8 times, ultimate compression strength >=40MPa, produce the efficiency of dust collection of flue gas up to 99.5% to power plant and Cement industry etc.Illustrate that the present invention has the advantage that hot strength is high, thermal shock resistance good, filtration efficiency is high.
Embodiment 2:
Utilize andaluzite to prepare a method for high-temperature dust removal ceramic filter tube, it comprises the steps:
1.
raw material crushing:it is below 1mm that andaluzite, high-temperature agglomerant, clay and pore-forming material four kinds of raw materials are crushed to particle diameter with powder beater respectively; Then andaluzite, high-temperature agglomerant are used ball mill grinding 12h respectively, cross 350 mesh sieves (described high-temperature agglomerant and pore-forming material all needed 350 mesh sieves) respectively, for subsequent use;
Described high-temperature agglomerant is feldspar; Described clay is wilkinite; Described pore-forming material is wood chip;
2.
proportioning raw materials:shared by each raw material, weight percentage is: andaluzite 80%, high-temperature agglomerant 10%, clay 5%,
pore-forming material5%, choose andaluzite, high-temperature agglomerant, clay and pore-forming material; Described andaluzite need use by granular size collocation, and its grating is: 280 ~ 320 μm, 60wt%; 20 ~ 45 μm, 40wt%;
3.
raw material mixes:andaluzite, high-temperature agglomerant, clay and pore-forming material are mixed in kneader, obtains compound; Water-soluble binder, lubricant and water is added again in compound, the add-on of water-soluble binder is 8% of mixture quality, the add-on of lubricant is 5% of mixture quality, the add-on of water is 18% of mixture quality, mixing 30min, use vacuum deairing machine pugging again, old 24h, obtains old good pug;
Described water-soluble binder is polyvinyl alcohol; Described lubricant is soya-bean oil;
4.
base substrate is extruded:extruded by forcing machine by old good pug, it is 3000mm that cutting obtains length, and external diameter is 100mm, and internal diameter is the vitrified pipe base substrate of 60mm; Forcing machine extrusion pressure is 8MPa;
5.
body drying:the vitrified pipe base substrate extruded is put into microwave oven to shape 45min, then put into 120 DEG C of dry 2h of infrared drying oven, microwave power is 5kW, and frequency is 2450MHz ± 50MHz;
6.
base substrate burns till:dried base substrate is put into shuttle kiln, burns till (temperature rise rate 5 DEG C/min, firing time 30h) through 1500 DEG C and obtain ceramic filter tube supporter;
7. spray coated filter membrane:(mullite fiber and andaluzite mass ratio are 1:2 to spray one deck mullite fiber and andaluzite slurry at ceramic filter tube supporter outside surface, water content is 40% of total mass), form filtering membrane, the thickness of filtering membrane (plated film) is 100 ~ 200 μm, through the dry 30mim of microwave oven, put into shuttle kiln to burn till (temperature rise rate 5 DEG C/min, firing time 15h) in 1300 DEG C
,prepare high-temperature dust removal ceramic filter tube (finished product).
After tested, softening temperature >=1300 DEG C of high-temperature dust removal ceramic filter tube of the present invention, 1000 DEG C ~ 20 DEG C anti-thermal shocks circulate and do not ftracture for 8 times, ultimate compression strength >=40MPa, produce the efficiency of dust collection of flue gas up to 99.5% to power plant and Cement industry etc.Illustrate that the present invention has the advantage that hot strength is high, thermal shock resistance good, filtration efficiency is high.
Embodiment 3:
Utilize andaluzite to prepare a method for high-temperature dust removal ceramic filter tube, it comprises the steps:
1.
raw material crushing:be below 1mm with crusher in crushing to particle diameter respectively by andaluzite, high-temperature agglomerant, clay and pore-forming material four kinds of raw materials; Then andaluzite, high-temperature agglomerant are used ball mill grinding 8h respectively, cross 280 mesh sieves (described high-temperature agglomerant and pore-forming material all needed 280 mesh sieves) respectively, for subsequent use;
Described high-temperature agglomerant is glass powder; Described clay is kaolin; Described pore-forming material is carbon black;
2.
proportioning raw materials:shared by each raw material, weight percentage is: andaluzite 62%, high-temperature agglomerant 20%, clay 8%,
pore-forming material10%, choose andaluzite, high-temperature agglomerant, clay and pore-forming material; Described andaluzite need use by granular size collocation, and its grating is: 280 ~ 320 μm, 50wt%; 20 ~ 45 μm, 50wt%;
3.
raw material mixes:andaluzite, high-temperature agglomerant, clay and pore-forming material are mixed in kneader, obtains compound; Water-soluble binder, lubricant and water is added again in compound, the add-on of water-soluble binder is 6% of mixture quality, the add-on of lubricant is 3% of mixture quality, the add-on of water is 16% of mixture quality, mixing 30min, use vacuum deairing machine pugging again, old 24h, obtains old good pug;
Described water-soluble binder is water glass; Described lubricant is tung oil;
4.
base substrate is extruded:extruded by forcing machine by old good pug, it is 2000mm that cutting obtains length, and external diameter is 80mm, and internal diameter is the vitrified pipe base substrate of 40mm; Forcing machine extrusion pressure is 6MPa;
5.
body drying:the vitrified pipe base substrate extruded is put into microwave oven to shape 35min, then put into 120 DEG C of dry 1.5h of infrared drying oven, microwave power is 5kW, and frequency is 2450MHz ± 50MHz;
6.
base substrate burns till:dried base substrate is put into shuttle kiln, burns till (temperature rise rate 4 DEG C/min, firing time 25h) through 1400 DEG C and obtain ceramic filter tube supporter;
7. spray coated filter membrane:(mullite fiber and andaluzite mass ratio are 1:2 to spray one deck mullite fiber and andaluzite slurry at ceramic filter tube supporter outside surface, water content is 40% of total mass), form filtering membrane, the thickness of filtering membrane (plated film) is 100 ~ 200 μm, through the dry 20mim of microwave oven, put into shuttle kiln and burn till in 1280 DEG C that (temperature rise rate 5 DEG C/min, the firing time 12 h), prepares high-temperature dust removal ceramic filter tube (finished product).
After tested, softening temperature >=1300 DEG C of high-temperature dust removal ceramic filter tube of the present invention, 1000 DEG C ~ 20 DEG C anti-thermal shocks circulate and do not ftracture for 8 times, ultimate compression strength >=40MPa, produce the efficiency of dust collection of flue gas up to 99.5% to power plant and Cement industry etc.Illustrate that the present invention has the advantage that hot strength is high, thermal shock resistance good, filtration efficiency is high.
Embodiment 4-6:
Substantially identical with embodiment 1-3, difference is:
Step 1.
in:described high-temperature agglomerant is talcum, feldspar and glass powder, and three's quality respectively accounts for 1/3; Described clay is camwood knag, wilkinite and kaolin, and three's quality respectively accounts for 1/3; Described pore-forming material is Graphite Powder 99, wood chip and carbon black, and three's quality respectively accounts for 1/3;
Step 3.
in:described water-soluble binder is carboxymethyl cellulose, polyvinyl alcohol and water glass, and three's quality respectively accounts for 1/3; Described lubricant is tung oil and soya-bean oil, and the two quality respectively accounts for 1/2.
After tested, softening temperature >=1300 DEG C of high-temperature dust removal ceramic filter tube of the present invention, 1000 DEG C ~ 20 DEG C anti-thermal shocks circulate and do not ftracture for 8 times, ultimate compression strength >=40MPa, produce the efficiency of dust collection of flue gas up to 99.5% to power plant and Cement industry etc.Illustrate that the present invention has the advantage that hot strength is high, thermal shock resistance good, filtration efficiency is high.
Each raw material cited by the present invention, and the bound of each raw material of the present invention, interval value, and the bound of processing parameter (as temperature, time etc.), interval value can realize the present invention, do not enumerate embodiment at this.
Claims (3)
1. utilize andaluzite to prepare a method for high-temperature dust removal ceramic filter tube, it is characterized in that it comprises the steps:
1.
raw material crushing:it is below 1mm that andaluzite, high-temperature agglomerant, clay and pore-forming material four kinds of raw materials are crushed to particle diameter with crusher or powder beater respectively; Then andaluzite, high-temperature agglomerant are used ball mill grinding 4h ~ 12h respectively, cross 200 ~ 350 mesh sieves respectively, for subsequent use;
2.
proportioning raw materials:shared by each raw material, weight percentage is: andaluzite 60 ~ 80%, high-temperature agglomerant 10 ~ 20%, clay 5 ~ 10%, and pore-forming material 5 ~ 20%, chooses andaluzite, high-temperature agglomerant, clay and pore-forming material;
Described andaluzite need use by granular size collocation, and its grating is: 280 ~ 320 μm, 40 ~ 60wt%; 20 ~ 45 μm, 60 ~ 40wt%; Described andaluzite need use by granular size collocation, and its grating is: 280 ~ 320 μm, 40 ~ 60wt%; 20 ~ 45 μm, 60 ~ 40wt%;
3.
raw material mixes:andaluzite, high-temperature agglomerant, clay and pore-forming material are mixed in kneader, obtains compound; Water-soluble binder, lubricant and water is added again in compound, the add-on of water-soluble binder is 3 ~ 8% of mixture quality, the add-on of lubricant is 2 ~ 5% of mixture quality, the add-on of water is 14 ~ 18% of mixture quality, mixing 30min, use vacuum deairing machine pugging again, old 24h, obtains old good pug;
4.
base substrate is extruded:extruded by forcing machine by old good pug, it is 1000 ~ 3000mm that cutting obtains length, and external diameter is 40 ~ 100mm, and internal diameter is the vitrified pipe base substrate of 20 ~ 60mm; Forcing machine extrusion pressure is 3-8MPa;
5.
body drying:the vitrified pipe base substrate extruded is put into microwave oven to shape 20-45min, then put into 120 DEG C of dry 1-2h of infrared drying oven, microwave power is 5kW, and frequency is 2450MHz ± 50MHz;
6.
base substrate burns till:dried base substrate is put into shuttle kiln, burns till through 1300-1500 DEG C, temperature rise rate 3 ~ 5 DEG C/min, firing time 20 ~ 30h, obtain ceramic filter tube supporter;
spray coated filter membrane: spray one deck mullite fiber and andaluzite slurry at ceramic filter tube supporter outside surface, form filtering membrane, mullite fiber and andaluzite slurry are mixed by mullite fiber, andaluzite and water, mullite fiber and andaluzite mass ratio are 1:2, and water content is 40% of total mass; The thickness of filtering membrane is 100 ~ 200 μm, through microwave oven drying 10 ~ 30mim, puts into shuttle kiln and burns till in 1240 ~ 1300 DEG C, temperature rise rate 5 DEG C/min, firing time 10 ~ 15 h
,prepare high-temperature dust removal ceramic filter tube.
2. a kind of method utilizing andaluzite to prepare high-temperature dust removal ceramic filter tube according to claim 1, is characterized in that: step 1. in: described high-temperature agglomerant is one in talcum, feldspar, glass powder or any two above mixture in any proportion above-mentioned; Described clay is one in camwood knag, wilkinite, kaolin or any two above mixture in any proportion above-mentioned; Described pore-forming material is one in Graphite Powder 99, wood chip, carbon black or any two above mixture in any proportion above-mentioned.
3. a kind of method utilizing andaluzite to prepare high-temperature dust removal ceramic filter tube according to claim 1, is characterized in that: step 3. in: described water-soluble binder is one in carboxymethyl cellulose, polyvinyl alcohol, water glass or any two above mixture in any proportion above-mentioned; Described lubricant is one in tung oil, soya-bean oil or both any scalemic thereof above-mentioned.
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| CN1714909A (en) * | 2005-05-11 | 2006-01-04 | 青海大学 | Method for preparing ceramic filter tube for purifying high temperature gas |
| CN102249729A (en) * | 2011-05-24 | 2011-11-23 | 武汉理工大学 | Method for preparing honeycomb ceramic heat accumulator by using andalusite tailings |
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