CN105060903A - Refractory castable with high thermal shock resistance - Google Patents
Refractory castable with high thermal shock resistance Download PDFInfo
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- CN105060903A CN105060903A CN201510451077.5A CN201510451077A CN105060903A CN 105060903 A CN105060903 A CN 105060903A CN 201510451077 A CN201510451077 A CN 201510451077A CN 105060903 A CN105060903 A CN 105060903A
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Abstract
The invention relates to a refractory castable with high thermal shock resistance; the refractory castable includes flint clay, high-alumina bauxite, alpha-alumina micro-powder, silicon micro-powder, a binder and an additive, and particularly includes the raw materials by the mass percentage: 20-28 parts of flint clay, 15-25 parts of flint clay, 10-20 parts of high-alumina bauxite, 10-15 parts of high-alumina bauxite, 15-25 parts of high-alumina bauxite fine powder, 3-8 parts of the alpha-alumina micro-powder, 1-5 parts of the silicon micro-powder, 1-4 parts of a zirconite powder, 2-8 parts of the binder, and 0.1-2 parts of the additive. The refractory castable has the advantages that the refractory castable can achieve excellent thermal shock stability which is characterized in that zirconite can generate a decomposition reaction at high temperatures, and zirconia with a tetragonal crystal shape is produced and is changed into monoclinic zirconcia during cooling, that is to say, with the introduction of zirconite, a high temperature stress induced phase transformation toughening mechanism is formed in a matrix, microscopic cracks are produced in the interior of a material, and thus the thermal shock loss resistant ability of the material is improved.
Description
Technical field
The present invention relates to a kind of high-heat resistance shock resistant refractory castable.
Background technology
The ratio accounted in application to refractory along with unshape refractory constantly increases, refractory castable adopts meticulous grain composition, micropowder technology and efficient bonding agent, additive because of it, there is the features such as high-density, low pore, high strength, low wearing and tearing, resistance to thermal shock, anti-erosion, become amorphous refractory of new generation.Meanwhile in different Application Areass, emphasis improvement hot properties is in a certain respect also by corresponding proposition.At present, the general resistance to flaking of refractory castable is poor, constrains the work-ing life of Industrial Stoves, needs the thermal shock resistance improving refractory castable for this reason, thus strengthens the resistance to flaking of refractory castable.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of this invention is to provide a kind of high-heat resistance shock resistant refractory castable, improving resistance to flaking.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of high-heat resistance shock resistant refractory castable, comprise flint clay, alumine, Alpha-alumina micro mist, silicon powder, bonding agent, admixture, granularity and the mass percent of above-mentioned raw materials are as follows:
Flint clay: granularity is 20 ~ 28 parts of 5 ~ 10mm;
Flint clay: granularity is 15 ~ 25 parts of 3 ~ 5mm;
Alumine: granularity is 10-20 part of 1 ~ 3mm;
Alumine: granularity is: be less than 10 ~ 15 parts of 1mm;
15-25 part of alumine fine powder: granularity is: 0 ~ 0.088mm;
Alpha-alumina micro mist: 3 ~ 8 parts;
Silicon powder: 1 ~ 5 part;
Zircon powder: 1 ~ 4 part;
Bonding agent: 2 ~ 8 parts;
Admixture: 0.1 ~ 2 part.
Described bonding agent is pure calcium aluminate cement.
Described admixture is one or both in tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
Compared with prior art, the invention has the beneficial effects as follows:
Excellent thermal shock resistance can be realized be, at high temperature decomposition reaction is there is with zircon, produce the zirconium white of cubic crystalline form, monoclinic zirconia is transformed into when cooling, namely being introduced in matrix of zircon forms high temperature stress induced transformation toughening mechanisms, produce micro-flaw at material internal, thus improve material anti-thermal shock loss ability.
Embodiment
Below the present invention is described in detail, but it should be noted that enforcement of the present invention is not limited to following embodiment.
Embodiment 1
1) preparation of mould material:
Granularity is the flint clay of 5 ~ 10mm: 23 parts; Granularity is the flint clay of 3 ~ 5: 18 parts; Granularity is the alumine of 1 ~ 3mm: 17 parts; Granularity is less than or equal to the alumine of 1mm: 10 parts; Granularity is less than or equal to the alumine fine powder of 0.088mm: 20 parts; Alpha-alumina micro mist: 4 parts; Silicon powder 4 parts; Zircon powder: 2 parts; Pure calcium aluminate cement: 2 parts, tripoly phosphate sodium STPP 0.25 part.By said ratio, precise, add water mix and blend, after shaping, maintenance, thermal treatment, test physicals.
2) quantitative measurement: after 110 DEG C × 24h is dried, detects thermal shock resistance 25 times.
Embodiment 2
1) preparation of mould material:
Granularity is the flint clay of 5 ~ 10mm: 25 parts; Granularity is the flint clay of 3 ~ 5: 20 parts; Granularity is the alumine of 1 ~ 3mm: 15 parts; Granularity is less than or equal to the alumine of 1mm: 10 parts; Granularity is less than or equal to the alumine fine powder of 0.088mm: 16 parts; Alpha-alumina micro mist: 5 parts; Silicon powder 3 parts; Zircon powder: 3 parts; Pure calcium aluminate cement: 3 parts; Sodium hexametaphosphate 99 0.2 part.
By said ratio, the various starting material of precise, add water mix and blend, after shaping, maintenance, thermal treatment, test physicals.
(2) quantitative measurement:
After 110 DEG C × 24h is dried, detect thermal shock resistance 27 times.
Embodiment 3
1) preparation of mould material:
Granularity is the flint clay of 5 ~ 10mm: 28 parts; Granularity is the flint clay of 3 ~ 5: 15 parts; Granularity is the alumine of 1 ~ 3mm: 10 parts; Granularity is less than or equal to the alumine of 1mm: 15 parts; Granularity is less than or equal to the alumine fine powder of 0.088mm: 17 parts; Alpha-alumina micro mist: 4 parts; Silicon powder 3 parts; Zircon powder: 4 parts; Pure calcium aluminate cement: 4 parts; 1 part, the mixture of Sodium hexametaphosphate 99 and tripoly phosphate sodium STPP.Sodium hexametaphosphate 99 can mix in the ratio of 1:1 with tripoly phosphate sodium STPP.
By said ratio, the various starting material of precise, add water mix and blend, after shaping, maintenance, thermal treatment, test physicals.
2) quantitative measurement:
After 110 DEG C × 24h is dried, detect thermal shock resistance 28 times.
Embodiment 4
1) preparation of mould material:
Granularity is the flint clay of 5 ~ 10mm: 20 parts; Granularity is the flint clay of 3 ~ 5: 25 parts; Granularity is the alumine of 1 ~ 3mm: 20 parts; Granularity is less than or equal to the alumine of 1mm: 12 parts; Granularity is less than or equal to the alumine fine powder of 0.088mm: 15 parts; Alpha-alumina micro mist: 6 parts; Silicon powder 2 parts; Zircon powder: 3 parts; Pure calcium aluminate cement: 6 parts; 1.5 parts, the mixture of Sodium hexametaphosphate 99 and tripoly phosphate sodium STPP.Sodium hexametaphosphate 99 can mix in the ratio of 1:1 with tripoly phosphate sodium STPP.
By said ratio, the various starting material of precise, add water mix and blend, after shaping, maintenance, thermal treatment, test physicals.
2) quantitative measurement:
After 110 DEG C × 24h is dried, detect thermal shock resistance 26 times.
Embodiment 5
1) preparation of mould material:
Granularity is the flint clay of 5 ~ 10mm: 24 parts; Granularity is the flint clay of 3 ~ 5: 23 parts; Granularity is the alumine of 1 ~ 3mm: 12 parts; Granularity is less than or equal to the alumine of 1mm: 14 parts; Granularity is less than or equal to the alumine fine powder of 0.088mm: 25 parts; Alpha-alumina micro mist: 7 parts; Silicon powder 3 parts; Zircon powder: 4 parts; Pure calcium aluminate cement: 7 parts; Sodium hexametaphosphate 99 2 parts.
By said ratio, the various starting material of precise, add water mix and blend, after shaping, maintenance, thermal treatment, test physicals.
2) quantitative measurement:
After 110 DEG C × 24h is dried, detect thermal shock resistance 27 times.
Present invention achieves excellent thermal shock resistance energy: at high temperature decomposition reaction occurs with zircon, produce the zirconium white of cubic crystalline form, monoclinic zirconia is transformed into when cooling, namely being introduced in matrix of zircon forms high temperature stress induced transformation toughening mechanisms, produce micro-flaw at material internal, thus improve material anti-thermal shock loss ability.
Claims (3)
1. a high-heat resistance shock resistant refractory castable, is characterized in that, comprises flint clay, alumine, Alpha-alumina micro mist, silicon powder, bonding agent, admixture, and granularity and the mass percent of above-mentioned raw materials are as follows:
Flint clay: granularity is 20 ~ 28 parts of 5 ~ 10mm;
Flint clay: granularity is 15 ~ 25 parts of 3 ~ 5mm;
Alumine: granularity is 10-20 part of 1 ~ 3mm;
Alumine: granularity is: be less than 10 ~ 15 parts of 1mm;
15-25 part of alumine fine powder: granularity is: 0 ~ 0.088mm;
Alpha-alumina micro mist: 3 ~ 8 parts;
Silicon powder: 1 ~ 5 part;
Zircon powder: 1 ~ 4 part;
Bonding agent: 2 ~ 8 parts;
Admixture: 0.1 ~ 2 part.
2. a kind of high-heat resistance shock resistant refractory castable according to claim 1, is characterized in that, described bonding agent is pure calcium aluminate cement.
3. a kind of high-heat resistance shock resistant refractory castable according to claim 1, is characterized in that, described admixture is one or both in tripoly phosphate sodium STPP or Sodium hexametaphosphate 99.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510451077.5A CN105060903A (en) | 2015-07-27 | 2015-07-27 | Refractory castable with high thermal shock resistance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510451077.5A CN105060903A (en) | 2015-07-27 | 2015-07-27 | Refractory castable with high thermal shock resistance |
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| CN105060903A true CN105060903A (en) | 2015-11-18 |
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| CN201510451077.5A Pending CN105060903A (en) | 2015-07-27 | 2015-07-27 | Refractory castable with high thermal shock resistance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106316418A (en) * | 2016-08-01 | 2017-01-11 | 张婷 | Castable for aluminum industry |
| CN109369160A (en) * | 2018-12-04 | 2019-02-22 | 钢城集团凉山瑞海实业有限公司 | Tundish cover castable |
| CN111423242A (en) * | 2020-04-22 | 2020-07-17 | 河南省宏达炉业有限公司 | Anti-stripping high-thermal-shock-resistance castable |
| CN113072385A (en) * | 2021-03-09 | 2021-07-06 | 山东九龙新材料有限公司 | Ladle opening castable added with waste daily glass powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503466A (en) * | 2011-10-25 | 2012-06-20 | 浙江锦诚耐火材料有限公司 | Andalusite self-flow castable |
| CN104150926A (en) * | 2014-08-06 | 2014-11-19 | 郑州东方窑业工程有限公司 | Preparation method for special casting material of ferronickel rotary kiln discharge opening |
| CN104193354A (en) * | 2014-08-08 | 2014-12-10 | 上海利尔耐火材料有限公司 | Permanent layer casting material of tundish and preparation method of permanent layer casting material |
-
2015
- 2015-07-27 CN CN201510451077.5A patent/CN105060903A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503466A (en) * | 2011-10-25 | 2012-06-20 | 浙江锦诚耐火材料有限公司 | Andalusite self-flow castable |
| CN104150926A (en) * | 2014-08-06 | 2014-11-19 | 郑州东方窑业工程有限公司 | Preparation method for special casting material of ferronickel rotary kiln discharge opening |
| CN104193354A (en) * | 2014-08-08 | 2014-12-10 | 上海利尔耐火材料有限公司 | Permanent layer casting material of tundish and preparation method of permanent layer casting material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106316418A (en) * | 2016-08-01 | 2017-01-11 | 张婷 | Castable for aluminum industry |
| CN109369160A (en) * | 2018-12-04 | 2019-02-22 | 钢城集团凉山瑞海实业有限公司 | Tundish cover castable |
| CN111423242A (en) * | 2020-04-22 | 2020-07-17 | 河南省宏达炉业有限公司 | Anti-stripping high-thermal-shock-resistance castable |
| CN113072385A (en) * | 2021-03-09 | 2021-07-06 | 山东九龙新材料有限公司 | Ladle opening castable added with waste daily glass powder |
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Application publication date: 20151118 |
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