CN106365660B - A kind of tundish permanent layer titanium calcium aluminate castable and preparation method thereof - Google Patents
A kind of tundish permanent layer titanium calcium aluminate castable and preparation method thereof Download PDFInfo
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- CN106365660B CN106365660B CN201611021635.5A CN201611021635A CN106365660B CN 106365660 B CN106365660 B CN 106365660B CN 201611021635 A CN201611021635 A CN 201611021635A CN 106365660 B CN106365660 B CN 106365660B
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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Abstract
The present invention relates to a kind of tundish permanent layer titanium calcium aluminate castables and preparation method thereof.Its technical solution is: using the ferrotianium solid impurity particle of 60 ~ 65wt% as aggregate, using the iron powder of the ferrotianium slag fine powder of 12 ~ 17wt%, the Brown Alundum fine powder of 15 ~ 20wt%, the samarium sesquioxide micro mist of 2 ~ 4wt% and 2 ~ 4wt% as substrate material, the sum of the aggregate and the substrate material are known as raw material.Ingredient is carried out by the ingredient and its content of the raw material, first the substrate material is mixed, then the substrate material after mixing is added in the aggregate, is uniformly mixed；Then the Aluminum sol of the additional 7 ~ 10wt% of raw material, stirs evenly, vibration moulding, conserves 12 ~ 24 hours under room temperature；Finally under the conditions of 90 ~ 110 DEG C heat preservation 12 ~ for 24 hours, be made tundish permanent layer titanium calcium aluminate castable.The present invention has the characteristics that low in cost and simple process；Prepared tundish permanent layer titanium calcium aluminate castable consistency is high, cold conditions compressive resistance is big and good thermal shock stability.
Description
Technical field
The invention belongs to titanium calcium aluminate castable technical fields.It is poured more particularly to a kind of tundish permanent layer titanium calcium aluminate
Material and preparation method thereof.
Background technique
Tundish is the key that Thermal Equipment in short route smelting iron and steel technique, is played certainly to going on smoothly for continuous casting process
Qualitatively effect.Tundish permanent layer mostly uses whole ramming process, reduces refractory consumption, improves tundish utilization rate
(Li Zhihui waits orthogonal design to apply energy supply for metallurgy, 2011,30 (6): 45 ~ 47) in middle Bao Naicai.
Currently, tundish permanent layer refractory material mainly uses " corundum-mullite matter composite diphase material ", " mullite gravity flow
Castable " and " High-Alumina composite casting material ".
Tundish permanent layer refractory material is used as using " corundum-mullite matter composite diphase material ", generally with corundum, high alumina alum
Native fine powder etc. is primary raw material, and introduces silicon powder, α-Al2O3Micro mist and high alumina cement are bonding agent, are formed after being mixed
(Liu Fang waits the improvement Baogang science and technology of casting performance for tundish long lasting, 2003,29 (1): 24 ~ 25).Prepared
" corundum-mullite matter composite diphase material " though refractoriness height and wear resistance are strong, the thermal expansion of corundum-mullite matter composite diphase material
Coefficient is larger, thus the ability for mitigating thermal stress poor (development of He Zhiyong tundish monolithic castable and application fire proofed wood
Material, 2001,35 (2): 15 ~ 122), damage is easily peeled off in heat cycles effect.
Using " mullite gravity flow pouring material " as tundish permanent layer refractory material (Shi Daoming, wait tundish with not come
The development of stone matter gravity flow pouring material and application refractory material, 2001,35 (4): 24 ~ 25), though its high mechanical strength, thermal shock are stablized
Property it is good and have good workability, but natural mullite there's almost no, can only be by pre-synthesis (electric smelting method or sintering process), this is undoubtedly
Increase mullite refractory, the especially development cost of mullite gravity flow pouring material.
Tundish permanent layer refractory material is used as using " High-Alumina composite casting material ", generally with alumine, aluminium oxide
Micro mist is major ingredient, or a certain amount of clinker of proportion (grind for tundish permanent layer castable by Wu Shengli's ferrovanadium slag
Study carefully the comprehensive utilization of Chinese Resources, 2014,32 (6): 13 ~ 15) forms after mixing.Using " High-Alumina composite casting material " conduct
Tundish permanent layer refractory material, though cost is relatively low for it, for metallurgical slag material due to complicated composition, ingredient is changeable, easily leads to
Eutectic phase is generated during high-temperature service in material, reduces the elevated temperature strength and applied at elevated temperature performance of material.Such as a kind of " titanium aluminic acid
Modified refractory material of calcium-alumine and its preparation method and application " (201510013589.3), a kind of " bottom of steel ladle casting
Material and preparation method thereof " (201510311418.9) and " a kind of reflection of refining vanadium inner lining of furnace titanium calcium aluminate prefabricated component and its preparation
Method " (201510469732.X).
Summary of the invention
The present invention is directed to overcome prior art defect, it is therefore an objective to provide a kind of low in cost and simple process tundish forever
The preparation method of long layer titanium calcium aluminate castable, with the consistency of tundish permanent layer titanium calcium aluminate castable prepared by this method
High, cold conditions compressive resistance is big and good thermal shock stability.
To achieve the above object, the technical solution adopted by the present invention is that: using the ferrotianium solid impurity particle of 60 ~ 65wt% as aggregate, with
The ferrotianium slag fine powder of 12 ~ 17wt%, the Brown Alundum fine powder of 15 ~ 20wt%, the samarium sesquioxide micro mist of 2 ~ 4wt% and the iron of 2 ~ 4wt%
Powder is substrate material, and the sum of the aggregate and the substrate material are known as raw material.
Ingredient is carried out by the ingredient and its content of the raw material, is first mixed the substrate material, then by the matrix after mixing
Material is added in the aggregate, is uniformly mixed；Then the Aluminum sol of the additional 7 ~ 10wt% of raw material, stirs evenly, vibration moulding,
It conserves 12 ~ 24 hours under room temperature；Finally under the conditions of 90 ~ 110 DEG C heat preservation 12 ~ for 24 hours, be made tundish permanent layer titanium aluminic acid
Calcium castable.
The ferrotianium slag is to smelt clinker caused by ferro-titanium, and the main chemical compositions of ferrotianium slag are: Al2O3Content
For 75 ~ 80wt%, TiO2Content is 10 ~ 12wt%, and CaO content is 6 ~ 10wt%, SiO2Content≤1wt%；The ferrotianium solid impurity particle
Granularity is 0.1 ~ 6mm；The granularity of the ferrotianium slag fine powder is 60 ~ 80 μm.
The Al of the Brown Alundum fine powder2O3Content >=95wt%；The granularity of Brown Alundum fine powder is 60 ~ 80 μm.
The Sm of the samarium sesquioxide micro mist2O3Content >=95wt%；The granularity of samarium sesquioxide micro mist is 60 ~ 80 μm.
Fe content >=98wt% of the iron powder；The granularity of iron powder is 60 ~ 80 μm.
The Al of the Aluminum sol2O3Content is 20 ~ 25wt%.
Due to taking above-mentioned technical proposal, the present invention has following good effect compared with prior art:
1, the present invention, which uses, smelts clinker caused by ferro-titanium for primary raw material, significantly reduces tundish permanent layer
The development cost of titanium calcium aluminate castable.
2, the present invention is not necessarily to special Preparation equipment and processing technique, saves human resources, and process flow is simple.
3, the present invention is compound by ceramic phase and metal phase, improves the heating conduction of titanium calcium aluminate castable, and combine
Solid solution reaction in situ, intensity are remarkably reinforced.
Tundish permanent layer titanium calcium aluminate castable prepared by the present invention is after measured: bulk density is after 1500 DEG C × 3h is burnt
3.20~3.25g·cm-3；Cold conditions compressive resistance is 70 ~ 80MPa after 1500 DEG C × 3h is burnt；Thermal shock resistance of 1300 DEG C of water coolings
Testing residual strength conservation rate is 94 ~ 97%.
Therefore, the present invention has the characteristics that low in cost and simple process；Prepared tundish permanent layer titanium calcium aluminate
Castable consistency is high, cold conditions compressive resistance is big and good thermal shock stability.
Specific embodiment
The invention will be further described With reference to embodiment, not to the limitation of its protection scope.
It is first that raw material Unify legislation involved in present embodiment is as follows to avoid repeating, it is no longer superfluous in embodiment
It states:
The ferrotianium slag is to smelt clinker caused by ferro-titanium, and the main chemical compositions of ferrotianium slag are: Al2O3Content
For 75 ~ 80wt%, TiO2Content is 10 ~ 12wt%, and CaO content is 6 ~ 10wt%, SiO2Content≤1wt%；The ferrotianium solid impurity particle
Granularity is 0.1 ~ 6mm；The granularity of the ferrotianium slag fine powder is 60 ~ 80 μm.
The Al of the Brown Alundum fine powder2O3Content >=95wt%；The granularity of Brown Alundum fine powder is 60 ~ 80 μm.
The Sm of the samarium sesquioxide micro mist2O3Content >=95wt%；The granularity of samarium sesquioxide micro mist is 60 ~ 80 μm.
Fe content >=98wt% of the iron powder；The granularity of iron powder is 60 ~ 80 μm.
The Al of the Aluminum sol2O3Content is 20 ~ 25wt%.
Embodiment 1
A kind of tundish permanent layer titanium calcium aluminate castable and preparation method thereof.Using the ferrotianium solid impurity particle of 60 ~ 62wt% as bone
Material, with the ferrotianium slag fine powder of 15 ~ 17wt%, the Brown Alundum fine powder of 18 ~ 20wt%, 2 ~ 3wt% samarium sesquioxide micro mist and 2 ~ 3wt%
Iron powder be substrate material, the sum of the aggregate and the substrate material referred to as raw material.
Ingredient is carried out by the ingredient and its content of the raw material, is first mixed the substrate material, then by the matrix after mixing
Material is added in the aggregate, is uniformly mixed；Then the Aluminum sol of the additional 7 ~ 9wt% of raw material, stirs evenly, vibration moulding, room
It is conserved 12 ~ 24 hours under the conditions of temperature；Finally under the conditions of 90 ~ 110 DEG C heat preservation 12 ~ for 24 hours, be made tundish permanent layer titanium calcium aluminate
Castable.
Tundish permanent layer titanium calcium aluminate castable manufactured in the present embodiment is after measured: bulk density after 1500 DEG C × 3h is burnt
For 3.20 ~ 3.22gcm-3；Cold conditions compressive resistance is 70 ~ 74MPa after 1500 DEG C × 3h is burnt；The thermal shock of 1300 DEG C of water coolings is stablized
Property experiment residual strength conservation rate be 94 ~ 96%.
Embodiment 2
A kind of tundish permanent layer titanium calcium aluminate castable and preparation method thereof.Using the ferrotianium solid impurity particle of 61 ~ 63wt% as bone
Material, with the ferrotianium slag fine powder of 14 ~ 16wt%, the Brown Alundum fine powder of 17 ~ 19wt%, 2 ~ 3wt% samarium sesquioxide micro mist and 2 ~ 3wt%
Iron powder be substrate material, the sum of the aggregate and the substrate material referred to as raw material.
Ingredient is carried out by the ingredient and its content of the raw material, is first mixed the substrate material, then by the matrix after mixing
Material is added in the aggregate, is uniformly mixed；Then the Aluminum sol of the additional 7 ~ 9wt% of raw material, stirs evenly, vibration moulding, room
It is conserved 12 ~ 24 hours under the conditions of temperature；Finally under the conditions of 90 ~ 110 DEG C heat preservation 12 ~ for 24 hours, be made tundish permanent layer titanium calcium aluminate
Castable.
Tundish permanent layer titanium calcium aluminate castable manufactured in the present embodiment is after measured: bulk density after 1500 DEG C × 3h is burnt
For 3.21 ~ 3.23gcm-3；Cold conditions compressive resistance is 72 ~ 76MPa after 1500 DEG C × 3h is burnt；The thermal shock of 1300 DEG C of water coolings is stablized
Property experiment residual strength conservation rate be 94 ~ 96%.
Embodiment 3
A kind of tundish permanent layer titanium calcium aluminate castable and preparation method thereof.Using the ferrotianium solid impurity particle of 62 ~ 64wt% as bone
Material, with the ferrotianium slag fine powder of 13 ~ 15wt%, the Brown Alundum fine powder of 16 ~ 18wt%, 3 ~ 4wt% samarium sesquioxide micro mist and 3 ~ 4wt%
Iron powder be substrate material, the sum of the aggregate and the substrate material referred to as raw material.
Ingredient is carried out by the ingredient and its content of the raw material, is first mixed the substrate material, then by the matrix after mixing
Material is added in the aggregate, is uniformly mixed；Then the Aluminum sol of the additional 8 ~ 10wt% of raw material, stirs evenly, vibration moulding,
It conserves 12 ~ 24 hours under room temperature；Finally under the conditions of 90 ~ 110 DEG C heat preservation 12 ~ for 24 hours, be made tundish permanent layer titanium aluminic acid
Calcium castable.
Tundish permanent layer titanium calcium aluminate castable manufactured in the present embodiment is after measured: bulk density after 1500 DEG C × 3h is burnt
For 3.22 ~ 3.24gcm-3；Cold conditions compressive resistance is 74 ~ 78MPa after 1500 DEG C × 3h is burnt；The thermal shock of 1300 DEG C of water coolings is stablized
Property experiment residual strength conservation rate be 95 ~ 97%.
Embodiment 4
A kind of tundish permanent layer titanium calcium aluminate castable and preparation method thereof.Using the ferrotianium solid impurity particle of 63 ~ 65wt% as bone
Material, with the ferrotianium slag fine powder of 12 ~ 14wt%, the Brown Alundum fine powder of 15 ~ 17wt%, 3 ~ 4wt% samarium sesquioxide micro mist and 3 ~ 4wt%
Iron powder be substrate material, the sum of the aggregate and the substrate material referred to as raw material.
Ingredient is carried out by the ingredient and its content of the raw material, is first mixed the substrate material, then by the matrix after mixing
Material is added in the aggregate, is uniformly mixed；Then the Aluminum sol of the additional 8 ~ 10wt% of raw material, stirs evenly, vibration moulding,
It conserves 12 ~ 24 hours under room temperature；Finally under the conditions of 90 ~ 110 DEG C heat preservation 12 ~ for 24 hours, be made tundish permanent layer titanium aluminic acid
Calcium castable.
Tundish permanent layer titanium calcium aluminate castable manufactured in the present embodiment is after measured: bulk density after 1500 DEG C × 3h is burnt
For 3.23 ~ 3.25gcm-3；Cold conditions compressive resistance is 76 ~ 80MPa after 1500 DEG C × 3h is burnt；The thermal shock of 1300 DEG C of water coolings is stablized
Property experiment residual strength conservation rate be 95 ~ 97%.
Present embodiment has following good effect compared with prior art:
1, present embodiment, which uses, smelts clinker caused by ferro-titanium for primary raw material, significantly reduces centre
The development cost of packet permanent layer titanium calcium aluminate castable.
2, present embodiment is not necessarily to special Preparation equipment and processing technique, saves human resources, process flow
Simply.
3, present embodiment is compound by ceramic phase and metal phase, improves the thermal conductivity of titanium calcium aluminate castable
Can, and solid solution reaction in situ is combined, intensity is remarkably reinforced.
Present embodiment preparation tundish permanent layer titanium calcium aluminate castable after measured: 1500 DEG C × 3h burn after body
Product density is 3.20 ~ 3.25g.cm-3；Cold conditions compressive resistance is 70 ~ 80MPa after 1500 DEG C × 3h is burnt；1300 DEG C of water coolings are once hot
Shaking stability experiment residual strength conservation rate is 94 ~ 97%.
Therefore, present embodiment has the characteristics that low in cost and simple process；Prepared tundish permanent layer
Titanium calcium aluminate castable consistency is high, cold conditions compressive resistance is big and good thermal shock stability.
Claims (4)
1. a kind of preparation method of tundish permanent layer titanium calcium aluminate castable, it is characterised in that with the ferrotianium slag of 60~65wt%
Particle is aggregate, with three oxidations two of the ferrotianium slag fine powder of 12~17wt%, the Brown Alundum fine powder of 15~20wt%, 2~4wt%
The iron powder of samarium micro mist and 2~4wt% are substrate material, and the sum of the aggregate and the substrate material are known as raw material；
Ingredient is carried out by the ingredient and its content of the raw material, is first mixed the substrate material, then the substrate material after mixing is added
Enter in the aggregate, is uniformly mixed；Then the Aluminum sol of the additional 7~10wt% of raw material, stirs evenly, vibration moulding, room
It is conserved 12~24 hours under the conditions of temperature；Finally under the conditions of 90~110 DEG C heat preservation 12~for 24 hours, be made tundish permanent layer titanium aluminium
Sour calcium castable；
The Sm of the samarium sesquioxide micro mist2O3Content >=95wt%；The granularity of samarium sesquioxide micro mist is 60~80 μm；
Fe content >=98wt% of the iron powder；The granularity of iron powder is 60~80 μm；
The Al of the Aluminum sol2O3Content is 20~25wt%.
2. the preparation method of tundish permanent layer titanium calcium aluminate castable according to claim 1, it is characterised in that described
Ferrotianium slag is to smelt clinker caused by ferro-titanium, and the main chemical compositions of ferrotianium slag are: Al2O3Content is 75~80wt%,
TiO2Content is 10~12wt%, and CaO content is 6~10wt%, SiO2Content≤1wt%；The granularity of the ferrotianium solid impurity particle is
0.1~6mm；The granularity of the ferrotianium slag fine powder is 60~80 μm.
3. the preparation method of tundish permanent layer titanium calcium aluminate castable according to claim 1, it is characterised in that described
The Al of Brown Alundum fine powder2O3Content >=95wt%；The granularity of Brown Alundum fine powder is 60~80 μm.
4. a kind of tundish permanent layer titanium calcium aluminate castable, it is characterised in that the tundish permanent layer titanium calcium aluminate castable
Be any one of according to claim 1~3 described in tundish permanent layer titanium calcium aluminate castable preparation method prepared by
Tundish permanent layer titanium calcium aluminate castable.
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| CN107056309B (en) * | 2017-04-07 | 2019-09-17 | 武汉科技大学 | A kind of Al2O3-TiO2- CaO matter gravity flow pouring material and preparation method thereof |
| CN109809804A (en) * | 2017-11-21 | 2019-05-28 | 中冶建筑研究总院有限公司 | A kind of wet injection material and preparation method thereof |
| CN109020517A (en) * | 2018-08-23 | 2018-12-18 | 安徽瑞泰新材料科技有限公司 | A kind of preparation method of castable refractory |
| CN109650913A (en) * | 2018-12-17 | 2019-04-19 | 武汉钢铁集团耐火材料有限责任公司 | The packet of ladle or iron packet continues to use titanium calcium aluminate castable and preparation method |
| CN110357573A (en) * | 2019-06-27 | 2019-10-22 | 上海宝钢工业技术服务有限公司 | Low benzo [a] pyrene type ring protects blast furnace mud and preparation method |
| CN112645706A (en) * | 2021-01-21 | 2021-04-13 | 山西昊业新材料开发有限公司 | Low-cost self-flow castable for periphery of ladle pocket brick and preparation method thereof |
| CN113666733B (en) * | 2021-08-09 | 2022-07-19 | 武汉科技大学 | Compound-layer calcium titanate reinforced calcium hexaluminate complex-phase material and preparation method thereof |
| CN113620720B (en) * | 2021-08-09 | 2022-07-19 | 武汉科技大学 | Calcium hexaluminate-calcium titanate complex phase refractory raw material and preparation method thereof |
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Effective date of registration: 20210408 Address after: 121100 SHIJIAPUZI village, Gaotaizi Town, Yi County, Jinzhou City, Liaoning Province Patentee after: JINZHOU GUOTAI INDUSTRIAL Co.,Ltd. Address before: 430081 construction of Qingshan District, Hubei, Wuhan Patentee before: WUHAN University OF SCIENCE AND TECHNOLOGY |