CN101318808B - Porous ceramic supporting body for high-strength inorganic separation film - Google Patents
Porous ceramic supporting body for high-strength inorganic separation film Download PDFInfo
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- CN101318808B CN101318808B CN2007100256338A CN200710025633A CN101318808B CN 101318808 B CN101318808 B CN 101318808B CN 2007100256338 A CN2007100256338 A CN 2007100256338A CN 200710025633 A CN200710025633 A CN 200710025633A CN 101318808 B CN101318808 B CN 101318808B
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Abstract
The invention relates to a high intensity porous ceramic supporting body used for an inorganic separation membrane. The porous ceramic supporting body is characterized by consisting of the following compositions by weight portion: 100 portions of pulverized corundum, 10 to 15 portions of kaolin and/or clay, 8 to 15 portions of potassium feldspar, 1 to 2 portions of carbonate, 3 to 5 portions of aluminum stearate and/or graphite, 2 to 10 portions of methylcellulose and/or dextrine, and 8 to 12 portions of colloidal alumina with a solid content between 8 and 12 percent. The breaking strength ofthe porous ceramic supporting body of a filter pipe is greatly increased, and the mechanical intensity of a sample is up to 55 to 65MPa; a ceramic inorganic membrane filter pipe made by taking the ceramic supporting body as a matrix can meet the non ferrous metal electrolytic refining technology completely and the use requirements of the filtration and purification of the electrolyte; moreover, the porous ceramic supporting body has simple preparation process, does not have special requirement, has low cost of raw materials, and does not need expensive raw materials; therefore, the cost is not increased greatly. The colloidal alumina plays a special function in the compositions, thereby improving the drying production yield and having marked reinforcing function which is unexampled.
Description
Technical field
The present invention relates to a kind of porous ceramic support for high strength inorganic separating film.
Background technology
Pottery mineral membrane separator tube is used widely in each field of industry as a kind of high efficiency filter separating medium.The inorganic micropore ceramics membrane filtration pipe that uses in the separating technology is on the porous ceramic pipe supporter, to cover inorganic microporous membrane, thereby forms gradient micropore ceramics membrane filtration pipe, and strainer tube work pressure-bearing is then mainly born by porous ceramic support.
Non-ferrous metals industry often adopts electrolysis process to purify metals, and in electrolyzer, makes anode with the crude metal that contains impurity, as ionogen, obtains the high metal of purity through electrolysis at negative electrode with its vitriol and sulfuric acid, realizes purification of metals.Yet in electrolytic process, impurity can carry out with electrolysis in the crude metal, constantly get into and pollute electrolytic solution in the electrolytic solution, and the cleanliness factor of electrolytic solution can influence the purity of electrolytic metal, for obtaining the high metal of purity, must often carry out filtering separation impurity to electrolytic solution.Common electrolytic process, the temperature of electrolytic solution can reach 70-90 ℃ even higher, and impurity and sludge content can reach 1-2%, and a day growing amount reaches several tons or more.The clean electrolytic solution of prior art, a kind of for the employing canvas filters, but because the canvas bore dia is thick; Reach 50-200um, the filtration initial stage, more through canvas micropore impurity; Naked eyes also can be observed the muddiness of liquid; Decontamination effect improving is relatively poor relatively, and the metal purity that causes on negative electrode, obtaining also decreases, and gained metal use range and price are restricted; Another kind of for adopting plastics organic membrane filter device, but higher owing to the electrolytic solution working temperature, the organic material temperature tolerance is relatively poor, very easily deforms in the use, even loses filter effect.Ceramic in recent years inorganic membrane filtration is because of its special advantages, is used for electrolyte purification and filters and be introduced into, for the purification high efficiency filter of electrolytic solution provides a kind of novel and high-efficiency filtering element.Yet because mud impurity viscosity is bigger in the electrolytic solution, and in the fine particles infiltration mineral membrane, adopt common static pressure type recoil to clean, be difficult to eliminate the pollution in face and duct, must adopt the Water-hammer type impact to clean and the matting acting in conjunction.And the Water-hammer type impact is cleaned very big to strainer tube vibratory impulse power; Existing strainer tube porous ceramic support is difficult to bear strong wallop like this; Like (GB/T16533-1996) " ceramic foam product general technical specifications "; Folding strength is only required and is not less than 3.5Mpa, the cracking of strainer tube very easily takes place.Through on-the-spot test and calculating, Water-hammer type impact to clean, and the strainer tube folding strength is necessary >=more than the 45Mpa, could guarantee safe and reliable use.
The disclosed high-strength refractory catalytic cleaning ceramic filter of Chinese patent CN1350996, its supporter consists of: aluminum oxide: 50～70%, zircon: 20～35%, ALUMNIUM FLUORIDE: 10～15%, mix with polyvinyl alcohol water solution; Process the supporter base substrate; Promptly become spontaneous mullite fiber through sintering and strengthen zircon corundum-mullite ceramic base composite material supporter, but do not provide the supporter intensity index, with regard to the purposes analysis; Be used for waste-gas cleaning; Because the aperture is bigger, the inside and outside both sides of ceramic wall pressure reduction is less, is not very high to requirement of strength; Molten steel is filtered into disposable use, and is also not high to requirement of strength, so this porous supporting body is difficult to satisfy the request for utilization of the anti-folding of above-mentioned height.
The disclosed high-strength inorganic separation film of Chinese patent CN1793040 is used the porous silicon carbide ceramic supporter, and by 90-95% β phase silicon carbide aggregate, the 5-10% volume percent is the pore-forming material of 35-50%, dry-pressing or cold isostatic compaction, pressureless sintering.Gained supporter intensity also only reaches 22-26.4Mpa, porosity 36-45, and mean pore size 40-60um obviously still can not satisfy above-mentioned request for utilization.
The applicant through adopt to add nano material for example alumina in Nano level make its enhancing; But because the agglomeration of nanometer; Few addition is actual to be difficult in that full and uniform dispersion plays a role in the material; Therefore enhancement is also limited, and sample is the highest also can only to reach 40Mpa, still can not satisfy above-mentioned request for utilization; And nano material costs an arm and a leg, and it is more to cause manufacturing cost to increase, and is difficult to get into practical in batches.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of preparation simple, intensity is high, lower-cost porous ceramic support for high strength inorganic separating film.
Porous ceramic support for high strength inorganic separating film of the present invention; It is characterized in that by emergy 100 minutes kaolin and/or clay 10-15 minutes, potassium felspar sand 8-15 minutes; Carbonate 1-2 minutes; StAl and/or graphite 3-5 minutes, methylcellulose gum and/or dextrin 2-10 minutes, the aluminium colloidal sol 8-12 of solid content 8-12% is grouped into.
Among the present invention
Emergy forms lean property aggregate as the supporter micropore, for obtaining high void content, for example >=40%, and the uniformity aperture, better adopt shaping sand (W type), promptly approximate spherical particle; Median size doubly designs the aperture by 4-6 and selects.
Kaolin and/or clay, and potassium felspar sand, as burning till the formation glassy phase at high temperature, the emergy particle bonds in the present invention forms.
Carbonate in the present invention both as pore former, can also get into glassy phase simultaneously and form the high temperature stick.For example can adopt a kind of or several mixing in lime carbonate, marble, magnesiumcarbonate, the rhombspar etc.
StAl and/or graphite, and methylcellulose gum and/or dextrin, in moulding with water jointly as forming adhesive and occupy-place pore former, burning through high temperature becomes porous insert after losing.In addition, StAl, graphite also play lubricant when extrusion moulding, help reducing to extrude resistance.
Methylcellulose gum and/or dextrin, as sticker in the moulding and pore-forming material, if adopt dextrin, dosage should be greater than methylcellulose gum.
Aluminium colloidal sol mainly plays enhancement in the present invention.Aluminium colloidal sol is prone to disperse in the batch mixing process, with material full and uniform mixing of ability, is prone to add; In sintering process, dry out, can obtain having the aluminum oxide of nano effect, play enhancement, and owing to good dispersivity in material, its enhancement obviously is superior to nano material.Test is also found in addition, adds aluminium colloidal sol, also helps and in base substrate, forms aquaporin, in drying process, helps moisture and discharges; Reduce the inside and outside moisture gradient of base substrate like this, in drying process, can effectively reduce cracking, improved drying property; Thereby overcome common single use organic binder bond, be difficult to form aquaporin, surface skining in drying process; Internal moisture is difficult to smooth and easy discharge, causes inside and outside moisture gradient to become big, causes cracking.
Porous ceramic support for high strength inorganic separating film of the present invention; Owing to adopt above-mentioned test gained prescription; Improved strainer tube porous ceramic support folding strength greatly, the sample physical strength can reach 55-65Mpa, the ceramic inorganic membrane filtration pipe of processing as matrix; Can satisfy aforementioned electrolytic non-ferrous metal purifying technique fully, to the filtration, purification request for utilization of electrolytic solution; And the present invention prepares simply, no particular requirement, and raw materials cost is low, does not have special expensive raw materials, and for example aluminium colloidal sol is merely the 1/5-1/10 of nano aluminium oxide, therefore can't cause manufacturing cost to improve by a relatively large margin.The special role of aluminium colloidal sol in the present invention forms not only improved the dried finished rate, its remarkable enhancement especially, and other raw materials are incomparable especially.Porous ceramic support of the present invention, aggregate still exists with the ortho states corundum in granules behind the sintering.
Below in conjunction with two exemplary embodiments, further specify the present invention.
Embodiment
Embodiment 1: got the W63 emergy 100 minutes, Suzhou soil 15 minutes, potassium felspar sand 13 minutes, rhombspar 1 minute; StAl 3 minutes, methylcellulose gum 3 minutes, the aluminium colloidal sol of solid content 10% 10 minutes; It is an amount of to add water, through mix and stir, mix, old, extrude into hollow tubular; After the drying, through 1270-1450 ℃ burn till porous ceramic support of the present invention, record average intensity and reach 60Mpa.The mud that the surface spraying is processed with W5 and W3.5 lapis amiridis respectively is coated with one time, has the ladder microfiltration tube thereby process, and sample filters solids content less than 0.04%, and < 0.01 μ, electrolyte is limpid to filter residual solid diameter.
Embodiment 2: got the W40 emergy 100 minutes, clay 12 minutes, potassium felspar sand 8 minutes, lime carbonate 2 minutes; StAl 2 minutes, graphite 3 minutes, methylcellulose gum 2 minutes, dextrin 5 minutes; The aluminium colloidal sol of solid content 10% 8 minutes, it is an amount of to add water, through mix and stir, mix, old, extrude into hollow tubular; Drying, through 1270-1450 ℃ burn till porous ceramic support of the present invention, record average intensity and reach 62Mpa.The mud that the surface spraying is processed with W5 and W3.5 lapis amiridis respectively is coated with one time, has the ladder microfiltration tube thereby process.
Comparative example: got the W63 emergy 100 minutes, Suzhou soil 15 minutes, potassium felspar sand 13 minutes, rhombspar 1 minute, StAl 3 minutes, methylcellulose gum 3 minutes, it is an amount of to add water, and method is the same, and gained porous ceramic support average intensity is 40Mpa only.
Claims (3)
1. porous ceramic support for high strength inorganic separating film; It is characterized in that by emergy 100 weight parts kaolin and/or clay 10-15 weight part, potassium felspar sand 8-15 weight part; Carbonate 1-2 weight part; StAl and/or graphite 3-5 weight part, methylcellulose gum and/or dextrin 2-10 weight part, the aluminium colloidal sol 8-12 weight part of solid content 8-12% is formed.
2. according to the said porous ceramic support for high strength inorganic separating film of claim 1, it is characterized in that said emergy is a shaping sand.
3. according to claim 1 or 2 said porous ceramic support for high strength inorganic separating film, it is characterized in that said emergy median size is that 4-6 doubly designs the aperture.
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| CN2007100256338A CN101318808B (en) | 2007-08-07 | 2007-08-07 | Porous ceramic supporting body for high-strength inorganic separation film |
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| CN2007100256338A CN101318808B (en) | 2007-08-07 | 2007-08-07 | Porous ceramic supporting body for high-strength inorganic separation film |
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| CN101318808B true CN101318808B (en) | 2012-05-30 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413909B (en) | 2009-04-30 | 2014-10-08 | 旭化成纤维株式会社 | Composite film substrate and composite film using same |
| CN101948316B (en) * | 2010-09-30 | 2012-12-12 | 中材高新材料股份有限公司 | Preparation method of ceramic filtration supporter |
| CN102210954B (en) * | 2011-06-01 | 2013-04-24 | 戴志强 | Solid-liquid separation composite filter board and preparation method thereof |
| CN102408250A (en) * | 2011-07-25 | 2012-04-11 | 三达膜科技（厦门）有限公司 | Ceramic membrane support and preparation method thereof |
| CN102580422A (en) * | 2012-03-02 | 2012-07-18 | 江苏省宜兴非金属化工机械厂有限公司 | Smoke filter pipe and method for coating same |
| CN103086704A (en) * | 2013-02-22 | 2013-05-08 | 东台市节能耐火材料厂 | Preparation method of high-porosity mineral-based ceramic membrane support |
| CN104801114B (en) * | 2014-01-24 | 2017-05-03 | 宜兴市科创环保有限公司 | Ceramic filtering element |
| CN105771682A (en) * | 2016-04-01 | 2016-07-20 | 江苏荆溪环保设备有限公司 | Tubular corundum filtering film and preparation method thereof |
| CN107857580A (en) * | 2017-12-16 | 2018-03-30 | 李炫颖 | A kind of preparation method of resistance to acid attack type porous ceramic film support material |
| CN108640322A (en) * | 2018-07-23 | 2018-10-12 | 合肥学院 | Ceramic membrane filtration adsorption treatment system and working method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772473A (en) * | 2004-11-10 | 2006-05-17 | 北京有色金属研究总院 | Gas absorbing film element of multilayer film structure and its making process and usage |
| CN1793040A (en) * | 2006-01-13 | 2006-06-28 | 清华大学 | Porous ceramic support for high strength inorganic separating film and preparation process thereof |
| WO2006136610A2 (en) * | 2005-06-23 | 2006-12-28 | Colorobbia Italia S.P.A. | Materials for coating ceramic bodies, processes for the preparation thereof, use thereof and ceramic articles including these materials |
| CN1907842A (en) * | 2006-08-10 | 2007-02-07 | 中国科学技术大学 | Method and apparatus for generating ozone |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772473A (en) * | 2004-11-10 | 2006-05-17 | 北京有色金属研究总院 | Gas absorbing film element of multilayer film structure and its making process and usage |
| WO2006136610A2 (en) * | 2005-06-23 | 2006-12-28 | Colorobbia Italia S.P.A. | Materials for coating ceramic bodies, processes for the preparation thereof, use thereof and ceramic articles including these materials |
| CN1793040A (en) * | 2006-01-13 | 2006-06-28 | 清华大学 | Porous ceramic support for high strength inorganic separating film and preparation process thereof |
| CN1907842A (en) * | 2006-08-10 | 2007-02-07 | 中国科学技术大学 | Method and apparatus for generating ozone |
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Granted publication date: 20120530 Termination date: 20170807 |