CN102351510A - Method for eliminating dry hanging ceramic plate firing defects - Google Patents
Method for eliminating dry hanging ceramic plate firing defects Download PDFInfo
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- CN102351510A CN102351510A CN2011101913761A CN201110191376A CN102351510A CN 102351510 A CN102351510 A CN 102351510A CN 2011101913761 A CN2011101913761 A CN 2011101913761A CN 201110191376 A CN201110191376 A CN 201110191376A CN 102351510 A CN102351510 A CN 102351510A
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Abstract
The invention relates to a method for eliminating dry hanging ceramic plate firing defects, which is characterized in that firing ceramic plate composition materials adopt 40 to 65 weight percent of mixed pottery clay, 0 to 20 weight percent of plastic clay, 0 to 15 weight percent of kaolin, 0 to 20 weight percent of feldspar, 10 to 25 weight percent of aggregates with the average grain diameter lower than 24 meshes and common quantity of bounding agents for ceramics. the amount of the pottery clay containing organic matters, sulfides, carbides and the like in the ceramic plate composition materials is reduced, in addition, the porosity after the extruded and formed blank bodies are dried is increased, and the ventilation performance of the blank bodies is improved, so organic matters, sulfides and carbides in the pug can be in the sufficient oxidation reaction to be eliminated in a short time when entering a preheating zone (600 to 700 DEG C), the original short firing period is maintained, the firing black core defect can be avoided, and in addition, the ingredient cost is basically maintained unchanged. In addition, the aggregate raw materials are added in the composition materials, the drying performance is also obviously improved, and the raw blank qualification rate is improved by 10 to 30 percent.
Description
Technical field
The present invention is the improvement to cladding pottery plate preparation method, relates in particular to adopt sandstone material instead of part potter's clay raw material, eliminates the method for burning till defective.
Background technology
Decorative dried hanging pottery plate is the curtain wall material of hollow structure, product thickness 15-50mm, and because of it is the hollow and thin-walled structure, objective the shorter firing period of need (being generally 2-4.5 hour).Because extrusion moulding is adopted in cladding pottery plate preparation, extrusion moulding is had relatively high expectations (being generally 4-8) to the plasticity-of pug, so the potter's clay usage quantity that plasticity-is high in the prescription composition is more, add-on reaches 50-80wt% usually.Existing cladding pottery plate prescription is formed: terra-cotta clay 50-80 wt% (first mud 0-30 wt%; Tender mud 0-30 wt%; Purple mud 0-20 wt%; White clay 30-70 wt%; Adjust various different potter's clay consumptions according to firing the different colours requirement); Strong fat clay (being commonly called as black mud) 0-20 wt%, kaolin 0-15 wt%, feldspar 0-20 wt%.
Preparation pottery board raw material treatment process; Usually adopt high hammer crushing, the Raymond machine grinding technics of efficient; Cause the large amount of organic, sulfide, the carbide that contain in the potter's clay thus; Before production, do not have and to dispose through the ball milling deironing; Like this in sintering process; If firing period is short; Cause the organic substance oxidation incomplete easily; Sulfide, carbide are got rid of unclean; Generate carbon granules and irony reduzate; Make the pottery intralamellar part after burning till phenomenons such as yellow, grey even black occur, also can cause the surface blisters protuberance when serious, general designation is burnt till evil mind.There are performance index such as the intensity that can influence hollow and thin-walled structure pottery plate, water-intake rate, surface quality in the evil mind defective, can cause product rejection in the time of seriously.
Organism, sulfide, carbide in the raw material, though can be through prolonging firing period (for example 5-8 hour), it is clean to make its abundant oxidation obtain eliminating, can seriously restrict pottery plate output like this, increases production cost.In addition, can also reduce irony, organic content, be spray dried to particle then through raw material being carried out modes such as ball milling deironing, washing, but this complex technical process, energy consumption is high, can cause the increase of production cost equally.
Above-mentioned deficiency still has is worth improved place.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned prior art, and the cladding pottery plate of elimination that provides a kind of and do not increase firing time, do not increase cost burns till the method for defective.
The object of the invention realizes; The main sandstone class raw material of in existing pottery plate material is formed, introducing 10-25wt% that improves; Thereby reduce the potter's clay raw material consumption of 10-25wt%, and introduce (adding) pottery binding agent of amount usually, effectively improve pottery plate oxidation bad phenomenon in sintering process.Overcome the deficiency of prior art, realized the object of the invention.Specifically; The present invention eliminates the method that cladding pottery plate burns till defective; It is characterized in that firing pottery plate component material is: terra-cotta clay 40-65 wt%; Strong fat clay 0-20 wt%; Kaolin 0-15 wt%; Feldspar 0-20 wt%, median size 24 sandstone material 10-25 wt% now adds common amount pottery binding agent.
Before detailed description, earlier do an introduction, so that those skilled in the art have one clearly to understand to this patent general plotting technical scheme and the basic effect that reaches through the basic function and the effect that can reach to invention.
The cladding pottery plate preparation of the present invention; Owing in component material, add 10-25wt% sandstone class raw material; Make extrusion moulding body drying posterior spiracle rate increase; Thereby improved the ventilation property of base substrate; Make organism in the pug, sulfide, carbide when getting into preheating zone (600-700 ℃); Be able to eliminate with regard to obtaining abundant oxidizing reaction eliminating within a short period of time, make to burn till the evil mind defective.
Among the present invention.
Terra-cotta clay, same prior art is according to firing the requirement of pottery plate different colours, is mixed by the potter's clay that is different colours after two kinds or above the burning till and forms, first mud 0-30 wt% for example, tender mud 0-30 wt%, purple mud 0-20 wt%, white clay 30-70 wt%.
Sandstone class raw material: be meant to contain SiO
2Mineral or synthesis material that many and refractoriness of composition height and/or hard particles and pottery plate firing temperature are complementary; Such as but not limited to middle temperature sand (firing temperature 1000-1200 ℃), river sand, ceramic waste residue (sintering is pulverized and is hard particles) etc.; It mainly acts on is in pottery plate base substrate, to play skeleton function; Improve the porosity of base substrate; Can use separately, also can mix use.In addition, better for watery fusion impurity, can burn lose organism, Wingdale composition foreign matter content will lack, otherwise can produce defectives such as low temperature melting point, hole, white point on the pottery plate surface burning till.Foreign matter content is few here, is a kind of relative concept, and actual selection is excellent to fire the basic free of surface defects in back, is difficult to state with concrete numerical tabular, because its influence also only is an outward appearance.
Because the sandstone class all is a poor material; Plasticity-and activity are all poor; Repetition test be illustrated in the pottery plate form in add-on must be controlled at below the 25%wt; Otherwise can too much influence product because of sandstone class material, for improving the cohesiveness of forming pug, in prescription, add the pottery binding agent of amount (for example 1-3%) usually in addition; CMC for example; Dextrin, MC is to solve the problem of forming the pug poor plasticity.
In addition, consider the pottery plate with raw material granularities such as terra-cotta clay, black mud, kaolin thin (particle diameter is 40 now), 24 now sandstone class raw meal particle sizes are moderate, are 0 on 24 orders, 24-30 order 10-25%, and the 30-80 order accounts for 75-90%.If sandstone class material has coarse particles on 24 orders, be prone to cause pottery plate surface irregularity, influence outward appearance; 80 fine powder is too much now, can cause again that void content reduces in the base substrate, does not have the effect of burning till evil mind of eliminating fully.
The present invention makes the method for pottery plate, removes material and changes to some extent, and introduce small amount of binder, and other are identical with original technology.Its technical process: with versicolor potter's clay respectively crushing grinding become 40 powders now; Take by weighing raw materials such as required potter's clay, black mud, kaolin, feldspar according to the formulation weight ratio; In the mixed machine of awl, mixed 10-15 minute; Add water 10-15wt% and in biaxial rneader, stir pugging; Extrusion forming in the vacuum extruding form machine; Dry through dry kiln, in roller kiln, be fired into cladding pottery plate through 1200 ℃.
The present invention eliminates the method that cladding pottery plate burns till defective; With respect to prior art; Owing in pottery plate component material, adopt 10-25wt% sandstone class material substitution equivalent potter's clay; Thereby not only reduced in the pottery plate component material and contained organism; Sulfide; Potter's clay consumptions such as carbide; Also helping improving pottery plate oxidation bad phenomenon in sintering process produces; And make extrusion moulding body drying posterior spiracle rate increase; Improved the ventilation property of base substrate; Make organism in the pug; Sulfide; Carbide is when getting into preheating zone (600-700 ℃); Just can obtain abundant oxidizing reaction within a short period of time gets rid of; The firing period that keeps original weak point; Burn till the evil mind defective and be able to eliminate and can make, and raw materials cost remains unchanged basically.In addition, increase sandstone class raw material in the component material, also make drying property be improved significantly, the green compact qualification rate has improved 10-30%.Experiment shows, adopts part sandstone class material substitution potter's clay raw material, does not change production performance, and product performance, and specific targets are seen table 1.
Below in conjunction with several specific embodiments; Essence of the present invention is further understood in exemplary illustration and help; But the embodiment detail only is for the present invention is described; Do not represent the present invention to conceive whole technical schemes down; Therefore should not be construed as the total technical scheme of the present invention is limited; Some are In the view of the technician; The unsubstantiality that does not depart from the present invention's design increases and/or change; For example simple the change or replacement of technical characterictic to have same or similar technique effect all belongs to protection domain of the present invention.
Embodiment
Comparative example/embodiment: shades of colour pottery plate material compositing formula is seen table 2; Preparation technology: various raw materials are taken by weighing according to prescription wt % proportion requirement; In the mixed machine of awl, mixed 10-15 minute; Add water 10-15wt% and in biaxial rneader, stir pugging; Extrusion forming in the vacuum extruding form machine, dry through dry kiln, in roller kiln, be fired into cladding pottery plate through 1200 ℃; Firing period is 3 hours, and performance is seen table 3.
To those skilled in the art; Under this patent design and specific embodiment enlightenment; Some distortion that can directly derive or associate from this patent disclosure and general knowledge; Those of ordinary skills will recognize also can adopt additive method; Or the substituting of known technology commonly used in the prior art; And the equivalence of characteristic changes or modification; Mutual various combination between characteristic; For example can adopt warm sand in part or all of firing temperature 1000-1200 ℃; River sand; Replace ceramic waste residue grain; The change of vitrified bond; Or the like unsubstantiality change, can be employed equally, can both realize this patent representation function and effect; Launch for example no longer one by one to describe in detail, all belong to this patent protection domain.
Illustrate: first mud, purple mud, tender mud, white clay in the material, originate from Yixing, Jiangsu.
Claims (4)
1. eliminate the method that cladding pottery plate burns till defective; It is characterized in that firing pottery plate component material is: terra-cotta clay 40-65 wt%; Fat clay 0-20 wt%; Kaolin 0-15 wt%; Feldspar 0-20 wt%; Median size 24 is sandstone material 10-25 wt% now, adds common amount pottery binding agent.
2. burn till the method for defective according to the cladding pottery plate of the said elimination of claim 1, it is characterized in that terra-cotta clay by 0-30 wt% first mud, the tender mud of 0-30 wt%, the purple mud of 0-20 wt%, 30-70 wt% white clay is formed.
3. burn till the method for defective according to the cladding pottery plate of the said elimination of claim 1, it is characterized in that sandstone class raw material is a kind of or mixing in warm sand, river sand, the ceramic waste residue in firing temperature 1000-1200 ℃.
4. burn till the method for defective according to claim 1, the cladding pottery plate of 2 or 3 said eliminations, it is characterized in that 24 now sandstone material particle diameter form: be 0 on 24 orders, 24-30 order 10-25%, the 30-80 order accounts for 75-90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011101913761A CN102351510A (en) | 2011-07-09 | 2011-07-09 | Method for eliminating dry hanging ceramic plate firing defects |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101913761A CN102351510A (en) | 2011-07-09 | 2011-07-09 | Method for eliminating dry hanging ceramic plate firing defects |
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| CN102351510A true CN102351510A (en) | 2012-02-15 |
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| CN2011101913761A Pending CN102351510A (en) | 2011-07-09 | 2011-07-09 | Method for eliminating dry hanging ceramic plate firing defects |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261800A (en) * | 2014-09-11 | 2015-01-07 | 瑞高(浙江)建筑系统有限公司 | Preparation process of vertically hanging ceramic plate and extruding and forming mould |
| CN106083166A (en) * | 2016-06-08 | 2016-11-09 | 甘肃迅美节能科技股份有限公司 | A kind of animal hair fine-celled foam insulation pottery piece preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481239A (en) * | 2009-02-14 | 2009-07-15 | 浙江安科新材料有限公司 | Curtain wall terra-cotta and method for producing the same |
| CN101718131A (en) * | 2009-12-01 | 2010-06-02 | 西安交通大学 | Ceramic plate for curtain wall decoration and preparation method thereof |
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2011
- 2011-07-09 CN CN2011101913761A patent/CN102351510A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101481239A (en) * | 2009-02-14 | 2009-07-15 | 浙江安科新材料有限公司 | Curtain wall terra-cotta and method for producing the same |
| CN101718131A (en) * | 2009-12-01 | 2010-06-02 | 西安交通大学 | Ceramic plate for curtain wall decoration and preparation method thereof |
Non-Patent Citations (2)
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| 杨天策: "陶板与陶板幕墙", 《建筑学报》 * |
| 钟路生: "陶板常见缺陷及其克服办法", 《佛山陶瓷》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261800A (en) * | 2014-09-11 | 2015-01-07 | 瑞高(浙江)建筑系统有限公司 | Preparation process of vertically hanging ceramic plate and extruding and forming mould |
| CN106083166A (en) * | 2016-06-08 | 2016-11-09 | 甘肃迅美节能科技股份有限公司 | A kind of animal hair fine-celled foam insulation pottery piece preparation method |
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Application publication date: 20120215 |