CN101525243A - Manufacture method for aluminium titanate crucible product - Google Patents
Manufacture method for aluminium titanate crucible product Download PDFInfo
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- CN101525243A CN101525243A CN200910064477A CN200910064477A CN101525243A CN 101525243 A CN101525243 A CN 101525243A CN 200910064477 A CN200910064477 A CN 200910064477A CN 200910064477 A CN200910064477 A CN 200910064477A CN 101525243 A CN101525243 A CN 101525243A
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- high temperature
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- base substrate
- mass percent
- acrylamide
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Abstract
The invention discloses a manufacture method for an aluminium titanate crucible product, which is characterized in that the following raw materials are mixed according to the mass percent: 50-57% of Al2O3, 37-44% of TiO2, 6-8% of additive (MgO, BaO, Y2O3, La2O3); after the raw materials are well bended, 18-23% of bonding agent aqueous solution (acrylamide, double polyacrylamide, ammonium persulfate, dual tetramethylethylenediamine and water) is additionally added, and then the mixture is prepared into sizing agent in a ball mill or a stirring mill; the sizing agent is poured into a product mold, after the sizing agent solidifies, a greed body is taken out from the mold; the green body is packed into an oven with the temperature of 80-100 DEG C for heat preservation of 30-40 hours; the dried green body is packed into a high temperature furnace with the temperature of 1550-1630 DEG C for heat preservation of 4-10 hours; sintering the high temperature crucible only needs a primary high temperature calcination working procesure, shortened production period, has obvious energy conservation effect, low production cost, and excellent performance, namely, high purity, big density, heavy intensity and high temperature resistant.
Description
Technical field
The present invention relates to the ceramic manufacturing technology, especially a kind of making method of aluminium titanate crucible product.
Background technology
Aluminium titanates (Al
2O
3TiO
2) ceramic because its thermal expansivity is little, the heatproof height, erosion resistance is strong, is the good high-quality refractory material of a kind of thermal shock resistance.But, have only by synthetic just can obtain because occurring in nature does not have natural material of aluminum titanate.Synthetic method is with Al
2O
3And TiO
2Mix, be heated to high temperature (more than 1200 ℃) and make its reaction generate Al
2O
3TiO
2Material.The method of making aluminum titanate ceramic articles usually is earlier with Al
2O
3, TiO
2Together mix with additive, calcining at high temperature generates aluminium titanates as raw material, then the aluminium titanates raw material is become aluminum titanate ceramic articles through broken pulverizing, moulding, high temperature sintering.The main drawback of this preparation alumina titanate ceramics technology is that (1) needs the calcining of two steps, and energy consumption is very big; (2) complex procedures, the process-cycle is long; (3) course of processing is brought impurity easily into, and product properties is had detrimentally affect.
However, people are subjected to the technical know-how of alumina titanate ceramics to reach the thinking constraint of habitual technology and influence for a long time, all adopt the manufacture craft of above-mentioned " calcining of two steps " at aspects such as theory research, application and development and productions.
Summary of the invention
Purpose of the present invention and be to propose a kind of making method of aluminium titanate crucible product is to overcome the existing defective of aluminium titanates article fabrication methods in the prior art.
The present invention has broken through the constraint of alumina titanate ceramics technical know-how and custom on the basis of test of many times research and discovery, the aluminium titanate crucible ceramic that adopted " one-step calcination " prepared.
Technical scheme of the present invention is:
The making method of aluminium titanate crucible product proposed by the invention is:
1), prepare burden by the mass percent of following raw material:
Al
2O
350～57%, TiO
237～44%, additive 6～8%.
2), batch mixes is added 18～23% the wedding agent aqueous solution after evenly again, in ball mill or stirrer, make slurry;
3), slurry is injected in the goods mould, after waiting to solidify base substrate is taken out from mould;
4), be in 80～100 ℃ the baking oven with the base substrate temperature of packing into, be incubated oven dry in 30～40 hours;
5), will dry the base substrate temperature of packing into is in 1550～1630 ℃ the high temperature kiln, to be incubated 4～10 hours and to carry out sintering.
The theory of material of aluminum titanate is formed and is about 56%Al
2O
3And 44%TiO
2, Al
2O
3/ TiO
2Ratio be about 1.27.When synthesizing material of aluminum titanate, if Al
2O
3/ TiO
2Ratio greater than 1.27 (rich Al structures), unnecessary Al
2O
3Can form the higher spinels crystalline phase of fusing point (as Al with additive
2O
3MgO etc.); If Al
2O
3/ TiO
2Ratio less than 1.27 (rich Ti structures), unnecessary TiO
2Can form the lower metatitanic acid salt crystalline phase of fusing point (as Mg Ti with additive
2O
5, Ba Ti
2O
5Deng).By evidence, the high-temperature behavior of rich Al structure is better than rich Ti structure.
Described additive comprises MgO, BaO, Y
2O
3, La
2O
3, their mass percent in the goods raw material: MgO 2～5%, Y
2O
31～3%, La
2O
30～2%, BaO 0～2%.
The purpose that adds additive suppresses Al exactly
2O
3TiO
2Decomposition.MgO can with Al
2O
3Form spinel (Al
2O
3MgO), also can with TiO
2Form magnesium titanate (Mg Ti
2O
5).The generation of these new crystalline phases can suppress Al effectively
2O
3TiO
2Decomposition.Add BaO and can reduce sintering temperature, improve product strength.Rare earth oxide (the Y that adds stable chemical performance
2O
3, La
2O
3) not only to Al
2O
3TiO
2Decomposition restraining effect is arranged, but also can suppress the generation of low melting point crystalline phase.
Described its formation of the wedding agent aqueous solution and mass percent: acrylamide: 12%, the double focusing acrylamide: 0.2%, ammonium persulphate: 0.5%, Tetramethyl Ethylene Diamine: 0.3%, surplus is a water.
In the wedding agent aqueous solution, acrylamide and double focusing acrylamide form netted polyacrylamide aggregate under the effect of initiator ammonium persulfate, various raw materials are combined as a whole.Tetramethyl Ethylene Diamine is as catalyzer, and its effect is the formation of accelerating the polyacrylamide aggregate.
Principal feature of the present invention is to finish in the step of burning till of the synthetic and goods of material of aluminum titanate, is about to Al
2O
3And TiO
2Mix with other additive, directly prepare aluminium titanate crucible product through overmolding and sintering.
Major advantage of the present invention is as follows:
(1) only need a high-temperature calcination operation, energy-conservation about 50%, production cost can reduce more than 50%.
(2) preparation technology is simple, and flow process is short, and the production cycle shortens about 50%.
(3) adopt notes to coagulate the method moulding, promptly material relies on acrylamide and double focusing acrylamide to form netted polyacrylamide aggregate under the effect of initiator ammonium persulfate.
(4) introduce rare earth oxide as additive, the product properties of being produced is good.
Embodiment
Embodiment 1
1, by following proportioning raw materials prepare burden (per-cent is by weight):
Al
2O
3：50％；TiO
2：44％；Y
2O
3：1％；MgO：5％；
2, batch mixes is added the wedding agent aqueous solution 18% (adding) after evenly again, in ball mill or stirrer, make slurry;
3, slurry is injected in the goods mould, after waiting to solidify base substrate is taken out from mould;
4, base substrate is packed into temperature is in 80 ℃ the baking oven, to be incubated oven dry in 30 hours;
5, will dry the base substrate temperature of packing into is in 1600 ℃ the high temperature kiln, to be incubated 6 hours and to carry out sintering.
Embodiment 2
1, by following proportioning raw materials prepare burden (per-cent is by weight):
Al
2O
3：53％；TiO
2：39％；Y
2O
3：3％；MgO：3％；BaO：2％；
2, batch mixes is added the wedding agent aqueous solution after evenly again: 20%, in ball mill or stirrer, make slurry;
3, slurry is injected in the goods mould, after waiting to solidify base substrate is taken out from mould;
4, base substrate is packed into temperature is in 90 ℃ the baking oven, to be incubated oven dry in 35 hours;
5, will dry the base substrate temperature of packing into is in 1550 ℃ the high temperature kiln, to be incubated 10 hours and to carry out sintering.
Embodiment 3
1, by following proportioning raw materials prepare burden (per-cent is by weight):
Al
2O
3：57％；TiO
2：37％；Y
2O
3：2％；MgO：2％；La
2O
3：2％；
2, batch mixes is added the wedding agent aqueous solution after evenly again: 23%, in ball mill or stirrer, make slurry;
3, slurry is injected in the goods mould, after waiting to solidify base substrate is taken out from mould;
4, base substrate is packed into temperature is in 100 ℃ the baking oven, to be incubated oven dry in 40 hours;
5, will dry the base substrate temperature of packing into is in 1630 ℃ the high temperature kiln, to be incubated 8 hours and to carry out sintering.
Claims (1)
1, a kind of making method of aluminium titanate crucible product is characterized in that: described making method is:
1), prepare burden by the mass percent of following raw material:
Al
2O
350～57%, TiO
237～44%, additive 6～8%;
2), batch mixes is added 18～23% the wedding agent aqueous solution after evenly again, in ball mill or stirrer, make slurry;
3), slurry is injected in the goods mould, after waiting to solidify base substrate is taken out from mould;
4), be in 80～100 ℃ the baking oven with the base substrate temperature of packing into, be incubated oven dry in 30～40 hours;
5), will dry the base substrate temperature of packing into is in 1550～1630 ℃ the high temperature kiln, to be incubated 4～10 hours and to carry out sintering;
Described additive comprises MgO, BaO, Y
2O
3, La
2O
3, their mass percent in the goods raw material: MgO 2～5%, Y
2O
31～3%, La
2O
30～2%, BaO 0～2%; Described its formation of the wedding agent aqueous solution and mass percent: acrylamide: 12%, the double focusing acrylamide: 0.2%, ammonium persulphate: 0.5%, Tetramethyl Ethylene Diamine: 0.3%, surplus is a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910064477A CN101525243A (en) | 2009-03-26 | 2009-03-26 | Manufacture method for aluminium titanate crucible product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910064477A CN101525243A (en) | 2009-03-26 | 2009-03-26 | Manufacture method for aluminium titanate crucible product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101525243A true CN101525243A (en) | 2009-09-09 |
Family
ID=41093340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910064477A Pending CN101525243A (en) | 2009-03-26 | 2009-03-26 | Manufacture method for aluminium titanate crucible product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101525243A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891454A (en) * | 2010-06-25 | 2010-11-24 | 夏卫平 | Corundum-aluminum titanate crucible and preparation technology thereof |
| CN102786313A (en) * | 2012-08-22 | 2012-11-21 | 武汉钢铁(集团)公司 | Dry-type preparation method of self-sintering magnesium oxide crucible of vacuum induction furnace |
| CN102936134A (en) * | 2012-12-11 | 2013-02-20 | 青岛森淼实业有限公司 | Preparation method of aluminium titanate sintering body |
| CN102936133A (en) * | 2012-12-10 | 2013-02-20 | 青岛海诺水务科技股份有限公司 | Preparation method of aluminium titanate material |
| CN103351162A (en) * | 2013-06-28 | 2013-10-16 | 无锡特科精细陶瓷有限公司 | Preparation method for aluminum titanate ceramic |
| CN108033765A (en) * | 2017-12-06 | 2018-05-15 | 郑州搜趣信息技术有限公司 | A kind of ceramic material of high heat conduction and its preparation method and application |
-
2009
- 2009-03-26 CN CN200910064477A patent/CN101525243A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891454A (en) * | 2010-06-25 | 2010-11-24 | 夏卫平 | Corundum-aluminum titanate crucible and preparation technology thereof |
| CN101891454B (en) * | 2010-06-25 | 2012-11-07 | 夏卫平 | Corundum-aluminum titanate crucible and preparation technology thereof |
| CN102786313A (en) * | 2012-08-22 | 2012-11-21 | 武汉钢铁(集团)公司 | Dry-type preparation method of self-sintering magnesium oxide crucible of vacuum induction furnace |
| CN102936133A (en) * | 2012-12-10 | 2013-02-20 | 青岛海诺水务科技股份有限公司 | Preparation method of aluminium titanate material |
| CN102936134A (en) * | 2012-12-11 | 2013-02-20 | 青岛森淼实业有限公司 | Preparation method of aluminium titanate sintering body |
| CN103351162A (en) * | 2013-06-28 | 2013-10-16 | 无锡特科精细陶瓷有限公司 | Preparation method for aluminum titanate ceramic |
| CN108033765A (en) * | 2017-12-06 | 2018-05-15 | 郑州搜趣信息技术有限公司 | A kind of ceramic material of high heat conduction and its preparation method and application |
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Application publication date: 20090909 |