CN105777146A - Boron nitride reinforced iron runner material - Google Patents
Boron nitride reinforced iron runner material Download PDFInfo
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- CN105777146A CN105777146A CN201510724061.7A CN201510724061A CN105777146A CN 105777146 A CN105777146 A CN 105777146A CN 201510724061 A CN201510724061 A CN 201510724061A CN 105777146 A CN105777146 A CN 105777146A
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Abstract
The invention discloses a boron nitride reinforced iron runner material. The iron runner material with good properties is prepared from raw materials such as brown alumina, silicon carbide, silica micropowder, hexagonal boron nitride, Si micropowder and graphite. According to the iron runner material, after boron nitride is added, under high-temperature circumstances, boron nitride has a graphitoid layered structure, and layers are bonded by relatively weak molecular bonds, so that the interface bonding of boron nitride and SiC is relatively weak, the thermal expansion coefficient of the material is relatively small, the deformation of the material under high-temperature conditions is lowered, and the thermal shock resistance of the material is improved; and on the other hand, hexagonal boron nitride has non-wetting property to slag melt and is oxidated at the temperature of 900 DEG C so as to produce boron oxide, boron oxide reacts with alumina in the material so as to produce aluminum borate, aluminum borate is subjected to volume expansion and forms a dense layer, protective oxidation occurs, and the slag erosion resistance of the material is enhanced. According to the boron nitride reinforced iron runner material, the slag erosion resistance and thermal shock resistance of the iron runner material can be remarkably improved, the chemical erosion resistance is high, the thermal shock stability is good, and the service life is long.
Description
[technical field]
The present invention relates to the technical field of metal smelt, particularly the technical field of a kind of boron nitride enhancement mode iron runner material.
[background technology]
Blast furnace iron outlet groove is the passage guiding high temperature liquid iron slag, blast furnace iron outlet groove liner be in use directly subjected to the high temperature of molten iron and slag wash away, mechanical wear, chemical erosion and rapid heat cycle frequently alternately.Therefore, Rafractory for molten iron discharge channel of blast furnace should have good high-temperature mechanics intensity, chemerosiveness resistent and thermal shock resistance.At present, the commonly used Al2O3-SiC-C matter castable of blast furnace iron outlet groove refractory material, the quality of Al2O3-SiC-C matter castable quality is mainly manifested in the length in its service life.Development along with blast furnace smelting technology, blast furnace develops to maximization, efficient, automatization and long-life direction, Rafractory for molten iron discharge channel of blast furnace has been put up harsher requirement by this, but common Al2O3-SiC-C matter main iron runner pouring material uses on blast furnace, and disposable iron is at about 100,000 tons.Along with strengthening smelting, the demand improving hot metal output becomes increasingly conspicuous, and sow requires that the demand that disposable iron is big is also more and more urgent, but sow is because thermal shock resistance is poor at present, thermal spalling and structure spalling occur, causes not anti-erosion, be sow life-span short major reason.The preparation method that " a kind of Al2O3-SiC-C matter iron runner castable and preparation method thereof " discloses a kind of iron runner castable adding catalyst, the method utilizes the effect in-situ preparation carbon whisker of catalyst under high temperature thus improving the applied at elevated temperature performance of iron runner material, carbon whisker has intensity and the advantage such as elastic modelling quantity is high, high temperature resistant, corrosion-resistant, the serviceability of iron runner castable can be improved and increase the service life, but it major drawback is that the growing amount of carbon whisker is limited, catalyst expensive, is unfavorable for realizing industrialized production.
[summary of the invention]
The purpose of the present invention solves the problems of the prior art exactly, it is proposed to a kind of boron nitride enhancement mode iron runner material, it is possible to make the resistance to slag corrosion of iron runner material and thermal shock resistance significantly improve, chemistry-resistant characteristic is strong, good thermal shock stability, long service life.
For achieving the above object, the present invention proposes a kind of boron nitride enhancement mode iron runner material, and the mass ratio including following components and each component is:
As preferably, described alumina raw is the fine powder of granule < 0.625mm, in described alumina raw, the purity of aluminium oxide is more than 90%, described Brown Alundum raw material is the fine powder of granule < 0.045mm, in described Brown Alundum raw material, the purity of aluminium oxide is more than 95%, described sic raw material is the fine powder of granule < 0.095mm, the purity of described sic raw material is more than 95%, described pure calcium aluminate cement raw material is the fine powder of granule < 0.515mm, in described pure calcium aluminate cement raw material, the purity of aluminium oxide is more than 65%.
As preferably, described hexagonal boron nitride raw material is the fine powder of granule < 0.035mm, and described explosion-proof fiber is polyurethanes fiber.
As preferably, described composite micro-powder includes the mass ratio of following components and each component and is: alumina powder: 40～50 parts；Ultrafine silica powder: 50～60 parts.
As preferably, described dispersant includes the mass ratio of following components and each component and is: sodium tripolyphosphate: 30～45 parts；Sodium hexameta phosphate: 60～70 parts.
As preferably, the mass ratio of each component is: Alumina: 15 parts；Brown Alundum: 40 parts；Graphite microparticles: 5 parts；Metallic silicon micropowder: 10 parts；Carborundum: 10 parts；Pure calcium aluminate cement: 10 parts；Hexagonal boron nitride: 5 parts；Explosion-proof fiber: 1 part；Composite micro-powder: 10 parts；Dispersant: 1 part.
As preferably, the mass ratio of each component is: Alumina: 20 parts；Brown Alundum: 50 parts；Graphite microparticles: 10 parts；Metallic silicon micropowder: 6 parts；Carborundum: 12 parts；Pure calcium aluminate cement: 15 parts；Hexagonal boron nitride: 6 parts；Explosion-proof fiber: 2 parts；Composite micro-powder: 15 parts；Dispersant: 1 part.
As preferably, the mass ratio of each component is: Alumina: 25 parts；Brown Alundum: 50 parts；Graphite microparticles: 10 parts；Metallic silicon micropowder: 8 parts；Carborundum: 15 parts；Pure calcium aluminate cement: 15 parts；Hexagonal boron nitride: 7 parts；Explosion-proof fiber: 2 parts；Composite micro-powder: 20 parts；Dispersant: 2 parts.
Beneficial effects of the present invention: the present invention adopts Brown Alundum, carborundum, ultrafine silica powder, hexagonal boron nitride, Si micropowder and graphite etc. to produce, for raw material, the iron runner material that character is excellent.Iron runner material adds after boron nitride, in the case of a high temperature, owing to boron nitride has the layer structure of similar graphite, the molecular link combination that interlayer one is more weak, so boron nitride and and the interface cohesion of SiC more weak, the thermal coefficient of expansion of material is less, makes material deform reduction in the case of a high temperature, improves the thermal shock resistance of material；On the other hand owing to hexagonal boron nitride has the nonwetting property to slag melt; when 900 DEG C, hexagonal boron nitride oxidation generates boron oxide and the aluminium oxide in material and reacts and generate Alborex M 12 and create volumetric expansion and form compacted zone; protectiveness oxidation occurs, enhances the resistance to slag corrosion of material.The present invention can make the resistance to slag corrosion of cleek material and thermal shock resistance significantly improve, and chemistry-resistant characteristic is strong, good thermal shock stability, long service life.
Inventive feature and advantage will be described in detail by embodiment.
[detailed description of the invention]
One boron nitride enhancement mode iron runner material of the present invention, the mass ratio including following components and each component is:
Described alumina raw is the fine powder of granule < 0.625mm, in described alumina raw, the purity of aluminium oxide is more than 90%, described Brown Alundum raw material is the fine powder of granule < 0.045mm, in described Brown Alundum raw material, the purity of aluminium oxide is more than 95%, described sic raw material is the fine powder of granule < 0.095mm, the purity of described sic raw material is more than 95%, described pure calcium aluminate cement raw material is the fine powder of granule < 0.515mm, in described pure calcium aluminate cement raw material, the purity of aluminium oxide is more than 65%.
Described hexagonal boron nitride raw material is the fine powder of granule < 0.035mm, and described explosion-proof fiber is polyurethanes fiber.
Described composite micro-powder includes the mass ratio of following components and each component: alumina powder: 40～50 parts；Ultrafine silica powder: 50～60 parts.
Described dispersant includes the mass ratio of following components and each component: sodium tripolyphosphate: 30～45 parts；Sodium hexameta phosphate: 60～70 parts.
Embodiment one: Alumina: 15 parts；Brown Alundum: 40 parts；Graphite microparticles: 5 parts；Metallic silicon micropowder: 10 parts；Carborundum: 10 parts；Pure calcium aluminate cement: 10 parts；Hexagonal boron nitride: 5 parts；Explosion-proof fiber: 1 part；Composite micro-powder: 10 parts；Dispersant: 1 part.
Embodiment two: Alumina: 20 parts；Brown Alundum: 50 parts；Graphite microparticles: 10 parts；Metallic silicon micropowder: 6 parts；Carborundum: 12 parts；Pure calcium aluminate cement: 15 parts；Hexagonal boron nitride: 6 parts；Explosion-proof fiber: 2 parts；Composite micro-powder: 15 parts；Dispersant: 1 part.
Embodiment three: Alumina: 25 parts；Brown Alundum: 50 parts；Graphite microparticles: 10 parts；Metallic silicon micropowder: 8 parts；Carborundum: 15 parts；Pure calcium aluminate cement: 15 parts；Hexagonal boron nitride: 7 parts；Explosion-proof fiber: 2 parts；Composite micro-powder: 20 parts；Dispersant: 2 parts.
The present invention produces, for raw material, the iron runner material that character is excellent with Brown Alundum, carborundum, ultrafine silica powder, hexagonal boron nitride, Si micropowder and graphite etc..Iron runner material adds after boron nitride, in the case of a high temperature, owing to boron nitride has the layer structure of similar graphite, the molecular link combination that interlayer one is more weak, so boron nitride and and the interface cohesion of SiC more weak, the thermal coefficient of expansion of material is less, makes material deform reduction in the case of a high temperature, improves the thermal shock resistance of material；On the other hand owing to hexagonal boron nitride has the nonwetting property to slag melt; when 900 DEG C, hexagonal boron nitride oxidation generates boron oxide and the aluminium oxide in material and reacts and generate Alborex M 12 and create volumetric expansion and form compacted zone; protectiveness oxidation occurs, enhances the resistance to slag corrosion of material.The present invention can make the resistance to slag corrosion of cleek material and thermal shock resistance significantly improve, and chemistry-resistant characteristic is strong, good thermal shock stability, long service life.
Above-described embodiment is the description of the invention, is not limitation of the invention, any scheme after simple transformation of the present invention is belonged to protection scope of the present invention.
Claims (8)
1. a boron nitride enhancement mode iron runner material, it is characterised in that: the mass ratio including following components and each component is:
2. a kind of boron nitride enhancement mode iron runner material as claimed in claim 1, it is characterized in that: described alumina raw is the fine powder of granule < 0.625mm, in described alumina raw, the purity of aluminium oxide is more than 90%, described Brown Alundum raw material is the fine powder of granule < 0.045mm, in described Brown Alundum raw material, the purity of aluminium oxide is more than 95%, described sic raw material is the fine powder of granule < 0.095mm, the purity of described sic raw material is more than 95%, described pure calcium aluminate cement raw material is the fine powder of granule < 0.515mm, in described pure calcium aluminate cement raw material, the purity of aluminium oxide is more than 65%.
3. a kind of boron nitride enhancement mode iron runner material as claimed in claim 1, it is characterised in that: described hexagonal boron nitride raw material is the fine powder of granule < 0.035mm, and described explosion-proof fiber is polyurethanes fiber.
4. a kind of boron nitride enhancement mode iron runner material as claimed in claim 1, it is characterised in that: described composite micro-powder includes the mass ratio of following components and each component and is: alumina powder: 40～50 parts；Ultrafine silica powder: 50～60 parts.
5. a kind of boron nitride enhancement mode iron runner material as claimed in claim 1, it is characterised in that: described dispersant includes the mass ratio of following components and each component and is: sodium tripolyphosphate: 30～45 parts；Sodium hexameta phosphate: 60～70 parts.
6. a kind of boron nitride enhancement mode iron runner material as claimed in claim 1, it is characterised in that: the fraction scale including following components and each component is: Alumina: 15 parts；Brown Alundum: 40 parts；Graphite microparticles: 5 parts；Metallic silicon micropowder: 10 parts；Carborundum: 10 parts；Pure calcium aluminate cement: 10 parts；Hexagonal boron nitride: 5 parts；Explosion-proof fiber: 1 part；Composite micro-powder: 10 parts；Dispersant: 1 part.
7. a kind of boron nitride enhancement mode iron runner material as claimed in claim 1, it is characterised in that: the fraction scale including following components and each component is: Alumina: 20 parts；Brown Alundum: 50 parts；Graphite microparticles: 10 parts；Metallic silicon micropowder: 6 parts；Carborundum: 12 parts；Pure calcium aluminate cement: 15 parts；Hexagonal boron nitride: 6 parts；Explosion-proof fiber: 2 parts；Composite micro-powder: 15 parts；Dispersant: 1 part.
8. a kind of boron nitride enhancement mode iron runner material as claimed in claim 1, it is characterised in that: the fraction scale including following components and each component is: Alumina: 25 parts；Brown Alundum: 50 parts；Graphite microparticles: 10 parts；Metallic silicon micropowder: 8 parts；Carborundum: 15 parts；Pure calcium aluminate cement: 15 parts；Hexagonal boron nitride: 7 parts；Explosion-proof fiber: 2 parts；Composite micro-powder: 20 parts；Dispersant: 2 parts.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107673768A (en) * | 2017-09-30 | 2018-02-09 | 徐州市伟华炉料有限公司 | A kind of enhanced regeneration iron runner castable |
| CN110734273A (en) * | 2019-10-09 | 2020-01-31 | 安徽徽博先临三维云打印技术有限公司 | 3D printing-based cultural relic copying composite material and preparation method thereof |
| CN111116151A (en) * | 2019-12-26 | 2020-05-08 | 中冶建筑研究总院有限公司 | High-temperature resistant consolidation material and construction method thereof |
| CN111448171A (en) * | 2017-08-04 | 2020-07-24 | 希克里特技术有限责任公司 | Hexagonal boron nitride/cement/polymer composite and synthesis method |
| CN111620675A (en) * | 2019-11-15 | 2020-09-04 | 东台市悦兴耐火材料有限公司 | High-strength aluminum-permeation-resistant castable and preparation method thereof |
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| CN1030095A (en) * | 1988-05-09 | 1989-01-04 | 冶金工业部建筑研究总院 | Refractory Castables for BF Troughs and Runners |
| CN103880454A (en) * | 2014-03-28 | 2014-06-25 | 长兴明天炉料有限公司 | Tap hole reclaimed material recycled quick-dry anti-explosion castable |
| CN104211417A (en) * | 2014-09-03 | 2014-12-17 | 长兴明天炉料有限公司 | Main trough castable for smelting vanadium-titanium ore |
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2015
- 2015-10-29 CN CN201510724061.7A patent/CN105777146A/en active Pending
Patent Citations (3)
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| CN1030095A (en) * | 1988-05-09 | 1989-01-04 | 冶金工业部建筑研究总院 | Refractory Castables for BF Troughs and Runners |
| CN103880454A (en) * | 2014-03-28 | 2014-06-25 | 长兴明天炉料有限公司 | Tap hole reclaimed material recycled quick-dry anti-explosion castable |
| CN104211417A (en) * | 2014-09-03 | 2014-12-17 | 长兴明天炉料有限公司 | Main trough castable for smelting vanadium-titanium ore |
Non-Patent Citations (1)
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| 钟香崇 等: "《新型高效耐火材料研究》", 30 April 2007 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111448171A (en) * | 2017-08-04 | 2020-07-24 | 希克里特技术有限责任公司 | Hexagonal boron nitride/cement/polymer composite and synthesis method |
| EP3661889A4 (en) * | 2017-08-04 | 2021-04-28 | C-crete Technologies, LLC | Hexagonal boron nitride /cement /polymer composites and methods of synthesis |
| CN107673768A (en) * | 2017-09-30 | 2018-02-09 | 徐州市伟华炉料有限公司 | A kind of enhanced regeneration iron runner castable |
| CN110734273A (en) * | 2019-10-09 | 2020-01-31 | 安徽徽博先临三维云打印技术有限公司 | 3D printing-based cultural relic copying composite material and preparation method thereof |
| CN111620675A (en) * | 2019-11-15 | 2020-09-04 | 东台市悦兴耐火材料有限公司 | High-strength aluminum-permeation-resistant castable and preparation method thereof |
| CN111116151A (en) * | 2019-12-26 | 2020-05-08 | 中冶建筑研究总院有限公司 | High-temperature resistant consolidation material and construction method thereof |
| CN111116151B (en) * | 2019-12-26 | 2022-03-15 | 中冶建筑研究总院有限公司 | High-temperature resistant consolidation material and construction method thereof |
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Application publication date: 20160720 |