CN1843595A - Preparation of porous membrane by utilizing industrial waste residue - Google Patents
Preparation of porous membrane by utilizing industrial waste residue Download PDFInfo
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- CN1843595A CN1843595A CN 200510063217 CN200510063217A CN1843595A CN 1843595 A CN1843595 A CN 1843595A CN 200510063217 CN200510063217 CN 200510063217 CN 200510063217 A CN200510063217 A CN 200510063217A CN 1843595 A CN1843595 A CN 1843595A
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- binding agent
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- industrial residue
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Abstract
The invention provides a method for preparing low-cost porous filter membrane, which comprises: breaking or selecting the industrial waste residue; adding additive to homogenize, mold and dry, to be sintered in the sintering furnace; than cooling to attain the symmetry porous filter membrane with narrow diameter distribution and high porous rate. Said product can be used in micro-filtration separation or the support of asymmetry porous film. Said inventive method uses industrial waste residue with the coating liquid prepared by additive to coat the symmetry film, to be dried and sintered, to attain the asymmetry porous filter membrane.
Description
Invention field
The present invention relates to the membrane preparation method in the membrane separation technique field.A kind of method of utilizing industrial residue to prepare porous membrane is proposed.
Background of invention
Existing perforated membrane includes organic polymeric membrane and inoranic membrane.Inoranic membrane is owing to have good chemical stability and resistance to elevated temperatures is developed rapidly.Inoranic membrane mainly comprises metal film, ceramic membrane and carbon membrane, and wherein the ceramic membrane production technology generally adopts the ceramic powder molding bonded, carries out high temperature sintering then and obtains.Because ceramic powder hardness height, levigate cost is very high, and consumes a large amount of natural mineral resources, sintering temperature height, energy consumption height.Industrial residue is the solid waste that industries such as mining industry, metallurgy and electric power produce, and China's volume of cargo in storage surpasses hundred million tons, because utilization rate is lower, volume of cargo in storage is also increasing every year, with it is raw material, and the preparation porous membrane can significantly reduce the film cost and reduce the debris dump storage simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of industrial residue with cheapness is raw material, adopts simple technology, is about to add in the industrial residue an amount of water and additive, moulding after the article shaped drying, is put sintering in the sintering furnace, make the aperture narrowly distributing, the method for the micro-filtration membrane that cost is low.
Realize design of the present invention based on: adopt and ceramic raw material similar performance, the abundant industrial residue ash in source are raw material, through moulding, drying, sintering formation porous membrane, cost of material significantly reduces.
Implementing concrete grammar of the present invention is:
At first industrial residue is carried out levigate and sorting or directly sorting, obtain the raw material of different-grain diameter, add entry and additive 0.01-30% in the industrial residue after sorting, additive is one or more of binding agent or plasticiser or lubricant.Binding agent is selected from one or more in phenolic resins class binding agent, cellulose and derivative class binding agent, starch and the polyvinyl alcohol; Plasticiser uses glycerine or polyethylene glycol or polyvinyl alcohol; Lubricant makes spent glycol.After adding additive raw material is stirred, adopt casting, extrusion molding or isostatic pressing method moulding, according to the forming method difference that is adopted, the water and the additive that add different amounts, make it to be fit to different moulding process, carry out moulding, drying then, the drying and moulding thing is placed sintering furnace sintering, cooling.Sintering temperature is according to the sintering characteristic of different material and difference, programming rate with 0.1～30 ℃/min rises to sintering temperature (500-1600 ℃), constant temperature 0-500 minute, naturally cooling then, obtain symmetric membrane (supporter), this symmetric membrane can directly be used, and also can be used as the supporter of asymmetric porous membrane.
Preparing asymmetric porous membrane then is supporter with the symmetric membrane, with the littler industrial residue slurries of granularity be that coating liquid applies, drying and double sintering, the solid powder content 10-80% in the slurries that wherein films, binding agent consumption 0.1-30%, dispersant dosage 0.01-10%.To film and utilize spraying process, dip coating or knife coating to film after slurries stir, carry out air dry or oven dry then.Carry out sintering after the drying, sintering temperature is 500～1600 ℃, 0.1～30 ℃/min of programming rate, and constant temperature time 0～500 minute obtains asymmetric porous membrane after the cooling.
The present invention is raw material with the industrial residue, makes porous membrane cheaply by simple sintering process.This invention investment is little, is good method, economic benefit and the obvious environment benefit of industrial residue high value added utilization.
Introduce embodiments of the invention below:
Embodiment 1
The fly ash micro-sphere that the average grain diameter that the separation of employing process obtains is 10 microns, add an amount of water and 1% methylcellulose, stirring is kneaded evenly, adopt the die for molding of isostatic pressing method at diameter 2cm, briquetting pressure 6MPa, obtain the symmetric membrane biscuit of thickness 2mm, drying at room temperature 24 hours or 110 degrees centigrade of dryings 1 hour, insert in the Muffle furnace then, programming rate with 3 degrees centigrade of per minutes rises to 1100 degrees centigrade, constant temperature 1 hour naturally cools to room temperature, obtains the perforated membrane of 2.0 microns of average pore sizes.
Embodiment 2
Adopt the fly ash micro-sphere of 2 microns of average grain diameters, process conditions can obtain the perforated membrane of 0.38 micron of average pore size with embodiment 1.
Embodiment 3
With average grain diameter is 2 microns flyash particle preparation slurries, contains flyash particle 40% in the slurries, binding agent methylcellulose 5%, dispersant polyacrylic acid sodium salt 0.02%, water 54.95% is after stirring, perforated membrane with embodiment 1 preparation is a supporter, films through dip coating.Air dry 48 hours with the sintering condition sintering identical with embodiment 1, obtains the separating layer average pore size and is 0.4 micron asymmetric porous membrane.
Claims (13)
1. method of utilizing industrial residue to make porous membrane, it is made up of following step:
A) in industrial residue, add additive, homogenize, moulding;
B) with the article shaped drying;
C) dried article shaped is placed the sintering furnace sintering; With
D) cooling.
2. according to the process of claim 1 wherein, industrial residue is selected from following one or more:
A) coal-fired thermal power factory burned-coal fly ash or furnace bottom slag that produce, that pass through fragmentation or sorting.
B) metallurgy high furnace blast furnace slag that produce, that pass through fragmentation or sorting.
C) gangue of process fragmentation or sorting.
D) the kaolinite mine tailing of process fragmentation or sorting.
E) the vanadine ore deposit mine tailing of process fragmentation or sorting.
3. according to the process of claim 1 wherein, additive is selected from following one or more:
A) binding agent: be selected from phenolic resins class binding agent, cellulose and derivative class binding agent thereof, starch, polyvinyl alcohol;
B) plasticiser: glycerine, polyethylene glycol, polyvinyl alcohol;
C) lubricant: ethylene glycol;
4. according to the method for claim 1 or 3, wherein, total additive amount is 0.01～30% of an industrial residue weight.
5. according to the process of claim 1 wherein, carry out moulding with isostatic pressing method, extrusion molding or casting method.
6. utilize the asymmetric porous membrane of preparation of product of claim 1, it is made up of following step:
A) product with claim 1 applies with coating liquid;
B) product drying after will applying;
C) place sintering furnace to carry out sintering dried product; With
D) cooling.
7. according to the method for claim 6, wherein, coating liquid is to utilize the industrial residue in the claim 2 to add the slurries that additive is prepared.
8. according to the method for claim 6 or 7, wherein, additive is selected from following one or more:
A) binding agent: be selected from phenolic resins class binding agent, cellulose and derivative class binding agent thereof, starch, polyvinyl alcohol;
B) dispersant: be selected from polycarboxylate, poly-inferior carboxylate, alkylsulfonate, alkylbenzenesulfonate, alkyl polyvinylether, alkyl polyoxyethylene ether.
9. according to the method for claim 6 or 7 or 8, wherein, additive amount is: binding agent 0.1-30%, dispersant 0.01-10%.
10. according to the method for claim 6 or 7, wherein, painting method is spraying process, knife coating or dip coating.
11. according to the method for claim 1 or 6, wherein, drying condition is: air dry or heating, drying.
12. according to the method for claim 1 or 6, wherein, sintering condition is: 600～1600 ℃ of sintering temperatures, 0.1～30 ℃ of heating rate per minute, constant temperature time 0～500 minute.
13. according to the method for claim 1 or 6, wherein, cooling is the nature cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100632178A CN100562357C (en) | 2005-04-07 | 2005-04-07 | Utilize industrial residue to prepare porous membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100632178A CN100562357C (en) | 2005-04-07 | 2005-04-07 | Utilize industrial residue to prepare porous membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1843595A true CN1843595A (en) | 2006-10-11 |
| CN100562357C CN100562357C (en) | 2009-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100632178A Expired - Fee Related CN100562357C (en) | 2005-04-07 | 2005-04-07 | Utilize industrial residue to prepare porous membrane |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623711A (en) * | 2013-11-01 | 2014-03-12 | 郭庆 | Preparation method of hollow flat plate structure type ceramic filter membrane element |
| CN106045488A (en) * | 2016-06-07 | 2016-10-26 | 贵州大学 | Method for preparing inorganic ceramic membrane separation device from coal gangue |
| CN108585883A (en) * | 2018-05-08 | 2018-09-28 | 南方科技大学 | Microfiltration ceramic membrane and preparation method thereof |
| CN108911706A (en) * | 2018-08-20 | 2018-11-30 | 南京工业大学 | A kind of co-sintering preparation method of fly ash base ceramic micro filter film |
| CN109107396A (en) * | 2018-08-20 | 2019-01-01 | 南京工业大学 | A method of mine water is handled using fly ash base microfiltration membranes negative-pressure ward |
| CN109126482A (en) * | 2018-08-20 | 2019-01-04 | 南京工业大学 | A kind of preparation method of flyash-aluminium oxide two-layer compound microfiltration membranes |
| CN110975639A (en) * | 2019-11-18 | 2020-04-10 | 昆明理工大学 | Antimony tailing based organic polymer synthetic membrane and preparation method and application thereof |
| CN113019158A (en) * | 2021-03-03 | 2021-06-25 | 北京工业大学 | Method for preparing porous wollastonite ceramic membrane for membrane distillation desalination by dry pressing and molding blast furnace slag as main raw material |
-
2005
- 2005-04-07 CN CNB2005100632178A patent/CN100562357C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103623711A (en) * | 2013-11-01 | 2014-03-12 | 郭庆 | Preparation method of hollow flat plate structure type ceramic filter membrane element |
| CN106045488A (en) * | 2016-06-07 | 2016-10-26 | 贵州大学 | Method for preparing inorganic ceramic membrane separation device from coal gangue |
| CN108585883A (en) * | 2018-05-08 | 2018-09-28 | 南方科技大学 | Microfiltration ceramic membrane and preparation method thereof |
| CN108911706A (en) * | 2018-08-20 | 2018-11-30 | 南京工业大学 | A kind of co-sintering preparation method of fly ash base ceramic micro filter film |
| CN109107396A (en) * | 2018-08-20 | 2019-01-01 | 南京工业大学 | A method of mine water is handled using fly ash base microfiltration membranes negative-pressure ward |
| CN109126482A (en) * | 2018-08-20 | 2019-01-04 | 南京工业大学 | A kind of preparation method of flyash-aluminium oxide two-layer compound microfiltration membranes |
| CN109126482B (en) * | 2018-08-20 | 2022-02-22 | 南京工业大学 | Preparation method of fly ash-alumina double-layer composite microfiltration membrane |
| CN110975639A (en) * | 2019-11-18 | 2020-04-10 | 昆明理工大学 | Antimony tailing based organic polymer synthetic membrane and preparation method and application thereof |
| CN113019158A (en) * | 2021-03-03 | 2021-06-25 | 北京工业大学 | Method for preparing porous wollastonite ceramic membrane for membrane distillation desalination by dry pressing and molding blast furnace slag as main raw material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100562357C (en) | 2009-11-25 |
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Granted publication date: 20091125 Termination date: 20130407 |