CN105218128A - A kind of High-Alumina heat-insulation and heat-preservation mould material - Google Patents
A kind of High-Alumina heat-insulation and heat-preservation mould material Download PDFInfo
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- CN105218128A CN105218128A CN201510742472.9A CN201510742472A CN105218128A CN 105218128 A CN105218128 A CN 105218128A CN 201510742472 A CN201510742472 A CN 201510742472A CN 105218128 A CN105218128 A CN 105218128A
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Abstract
The invention discloses a kind of High-Alumina heat-insulation and heat-preservation mould material, comprise following component and each constituent mass ratio is: electric smelting compact alumina 30 ~ 50, Brown Alundum 20 ~ 30, alumina hollow ball 3 ~ 6, aluminum oxide 7 ~ 10, pure calcium aluminate cement 3 ~ 5, Pure Silicon Metal 2 ~ 6, metallic aluminium powder 0.3 ~ 0.9, yttrium oxide 4 ~ 5, pyrophyllite powder 2 ~ 3, silicon sol 3 ~ 5.A kind of High-Alumina heat-insulation and heat-preservation of the present invention mould material, by adding alumina hollow ball, has use temperature high, the advantages such as thermal insulation is good, reduce the loss of iron runner heat, reduce the temperature difference of iron runner before and after tapping a blast furnace, be conducive to the heat-shock resistance of iron runner, thus improve the work-ing life of product; While adding alumina hollow ball, add yttrium oxide, facilitate the sintering of product, the pore of product is less, be more evenly distributed, improve the volume density of product simultaneously, thus add compressive strength, work-ing life improves greatly: add appropriate pyrophyllite powder, effectively in the oxidation-resistance of REINFORCED Al 2O3-SiC-C matter mould material.
Description
[technical field]
The present invention relates to the technical field of Metal smelting, particularly a kind of technical field of High-Alumina heat-insulation and heat-preservation mould material.
[background technology]
Blast furnace iron outlet groove guides high temperature liquid iron with slag and makes it the passage that is fully separated, its use life-span of resistance to material, directly affect the normal production of blast furnace.Current casting house tissue looseness, anti-oxidant slag, iron influx are low, and a casting house light maintenance in three days, an overhaul in five days, repeats to repair ditch often, and labor strength is large, and casting house is short for duration of service.The frequent blast furnace that affects taps a blast furnace on schedule, makes troubles to blast fumance.Along with the continuous progress of intensification of smelting process in BF and blast furnace operation technology, the capacity factor of a blast furnace and the number of casts are on the increase, and the working conditions of casting house refractory materials is day by day harsh.More and more higher to the requirement of the safe handling of casting house material, longevity.
[summary of the invention]
Object of the present invention solves the problems of the prior art exactly, proposes a kind of High-Alumina heat-insulation and heat-preservation mould material, and the casting house built up can be made to have the good and long service life of good in oxidation resistance, high-temperature behavior.
For achieving the above object, the present invention proposes a kind of High-Alumina heat-insulation and heat-preservation mould material, comprise following component and each constituent mass ratio is:
As preferably, described alumina hollow ball is the hollow classification balls of aluminum oxide, and diameter is 0.2 ~ 1mm.
As preferably, described pure calcium aluminate cement is CA70 pure calcium aluminate cement.
As preferably, the quality index of described yttrium oxide is: Y2O3 >=98%.
As preferably, comprise following component and the mass fraction of each component is:
Electric smelting compact alumina: 50 parts, Brown Alundum: 20 parts, alumina hollow ball: 3 parts, aluminum oxide: 10 parts, pure calcium aluminate cement: 3 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.3 part, yttrium oxide: 5 parts, pyrophyllite powder: 2 parts, silicon sol: 5 parts.
As preferably, comprise following component and the mass fraction of each component is:
Electric smelting compact alumina: 30 parts, Brown Alundum: 30 parts, alumina hollow ball: 3 parts, aluminum oxide: 10 parts, pure calcium aluminate cement: 3 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.3 part, yttrium oxide: 5 parts, pyrophyllite powder: 2 parts, silicon sol: 5 parts.
As preferably, comprise following component and the mass fraction of each component is:
Electric smelting compact alumina: 40 parts, Brown Alundum: 25 parts, alumina hollow ball: 5 parts, aluminum oxide: 7 parts, pure calcium aluminate cement: 5 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.9 part, yttrium oxide: 5 parts, pyrophyllite powder: 3 parts, silicon sol: 5 parts.
Beneficial effect of the present invention: present invention employs silicon sol and combine and add yttrium oxide in the product, improve the hot strength of product, and add alumina hollow ball and pyrophyllite powder in product kind, improve heat insulation and preservation effect and oxidation-resistance, improve the over-all properties of product, the casting house using the present invention a kind of High-Alumina heat-insulation and heat-preservation mould material to build up has the high-performances such as the good and long service life of good in oxidation resistance, high-temperature behavior.Popularizing at present along with medium-and-large-sized intensification of smelting process in BF, this product innovation application prospect is extensive.
Feature of the present invention and advantage will be described in detail by embodiment.
[embodiment]
A kind of High-Alumina heat-insulation and heat-preservation of the present invention mould material, comprises following component and each constituent mass ratio is:
Described alumina hollow ball is the hollow classification balls of aluminum oxide, and diameter is 0.2 ~ 1mm; Described pure calcium aluminate cement is CA70 pure calcium aluminate cement; The quality index of described yttrium oxide is: Y2O3 >=98%.
Embodiment one: electric smelting compact alumina: 50 parts, Brown Alundum: 20 parts, alumina hollow ball: 3 parts, aluminum oxide: 10 parts, pure calcium aluminate cement: 3 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.3 part, yttrium oxide: 5 parts, pyrophyllite powder: 2 parts, silicon sol: 5 parts
Embodiment two: electric smelting compact alumina: 30 parts, Brown Alundum: 30 parts, alumina hollow ball: 3 parts, aluminum oxide: 10 parts, pure calcium aluminate cement: 3 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.3 part, yttrium oxide: 5 parts, pyrophyllite powder: 2 parts, silicon sol: 5 parts
Embodiment three: electric smelting compact alumina: 40 parts, Brown Alundum: 25 parts, alumina hollow ball: 5 parts, aluminum oxide: 7 parts, pure calcium aluminate cement: 5 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.9 part, yttrium oxide: 5 parts, pyrophyllite powder: 3 parts, silicon sol: 5 parts
A kind of High-Alumina heat-insulation and heat-preservation of the present invention mould material, adds alumina hollow ball, has use temperature high, the advantages such as thermal insulation is good, reduce the loss of iron runner heat, reduce the temperature difference of iron runner before and after tapping a blast furnace, be conducive to the heat-shock resistance of iron runner, thus improve the work-ing life of product; While adding alumina hollow ball, add yttrium oxide, facilitate the sintering of product, the pore of product is less, is more evenly distributed, improve the volume density of product simultaneously, thus adding compressive strength, work-ing life improves greatly: add appropriate pyrophyllite powder, is conducive to the oxidation-resistance of REINFORCED Al 2O3-SiC-C matter mould material, and when add-on is 2% (w), mobility and hot strength the best.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (7)
1. a High-Alumina heat-insulation and heat-preservation mould material, is characterized in that: comprise following component and each constituent mass ratio is:
2. a kind of High-Alumina heat-insulation and heat-preservation mould material as claimed in claim 1, is characterized in that: described alumina hollow ball is the hollow classification balls of aluminum oxide, and diameter is 0.2 ~ 1mm.
3. a kind of High-Alumina heat-insulation and heat-preservation mould material as claimed in claim 1, is characterized in that: described pure calcium aluminate cement is CA70 pure calcium aluminate cement.
4. a kind of High-Alumina heat-insulation and heat-preservation mould material as claimed in claim 1, is characterized in that: the quality index of described yttrium oxide is: Y2O3 >=98%.
5. a kind of High-Alumina heat-insulation and heat-preservation mould material as claimed in claim 1, is characterized in that: comprise following component and the mass fraction of each component is:
Electric smelting compact alumina: 50 parts, Brown Alundum: 20 parts, alumina hollow ball: 3 parts, aluminum oxide: 10 parts, pure calcium aluminate cement: 3 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.3 part, yttrium oxide: 5 parts, pyrophyllite powder: 2 parts, silicon sol: 5 parts.
6. a kind of High-Alumina heat-insulation and heat-preservation mould material as claimed in claim 1, is characterized in that: comprise following component and the mass fraction of each component is:
Electric smelting compact alumina: 30 parts, Brown Alundum: 30 parts, alumina hollow ball: 3 parts, aluminum oxide: 10 parts, pure calcium aluminate cement: 3 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.3 part, yttrium oxide: 5 parts, pyrophyllite powder: 2 parts, silicon sol: 5 parts.
7. a kind of High-Alumina heat-insulation and heat-preservation mould material according to any one of claim 1 to 6, is characterized in that: comprise following component and the mass fraction of each component is:
Electric smelting compact alumina: 40 parts, Brown Alundum: 25 parts, alumina hollow ball: 5 parts, aluminum oxide: 7 parts, pure calcium aluminate cement: 5 parts, Pure Silicon Metal: 6 parts, metallic aluminium powder: 0.9 part, yttrium oxide: 5 parts, pyrophyllite powder: 3 parts, silicon sol: 5 parts.
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| CN201510742472.9A CN105218128B (en) | 2015-11-04 | 2015-11-04 | A kind of High-Alumina heat-insulation and heat-preservation castable |
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| CN201510742472.9A CN105218128B (en) | 2015-11-04 | 2015-11-04 | A kind of High-Alumina heat-insulation and heat-preservation castable |
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| CN105218128A true CN105218128A (en) | 2016-01-06 |
| CN105218128B CN105218128B (en) | 2017-12-26 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500789A (en) * | 2017-08-24 | 2017-12-22 | 浙江科屹耐火材料有限公司 | A kind of mullite pouring material and preparation method thereof |
| CN107651946A (en) * | 2017-10-30 | 2018-02-02 | 孝义市和中兴矿产有限公司 | A kind of calcium carbide fire door anti-thermal shock resistance to erosion castable |
| CN111285697A (en) * | 2020-04-09 | 2020-06-16 | 郑州正仟新材料有限公司 | Ceramic composite wear-resistant castable |
| CN112408998A (en) * | 2020-11-19 | 2021-02-26 | 浙江自立高温科技股份有限公司 | Ladle permanent layer castable |
| CN112707722A (en) * | 2020-12-30 | 2021-04-27 | 巩义市新科耐火材料有限公司 | Production method of modified corundum brick |
| CN115893994A (en) * | 2022-11-03 | 2023-04-04 | 中冶武汉冶金建筑研究院有限公司 | Rare earth oxide modified corundum-mullite castable and use method and application thereof |
| CN116135815A (en) * | 2021-11-16 | 2023-05-19 | 宝武装备智能科技有限公司 | Lining castable for integral casting of blast furnace belly pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104311059A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Heat-insulating refractory castable containing fireproof hollow spheres |
| JP2015107891A (en) * | 2013-12-04 | 2015-06-11 | 旭硝子株式会社 | Unshaped refractory and radioactive shield material using it |
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2015
- 2015-11-04 CN CN201510742472.9A patent/CN105218128B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015107891A (en) * | 2013-12-04 | 2015-06-11 | 旭硝子株式会社 | Unshaped refractory and radioactive shield material using it |
| CN104311059A (en) * | 2014-10-09 | 2015-01-28 | 宁夏天纵泓光余热发电技术有限公司 | Heat-insulating refractory castable containing fireproof hollow spheres |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107500789A (en) * | 2017-08-24 | 2017-12-22 | 浙江科屹耐火材料有限公司 | A kind of mullite pouring material and preparation method thereof |
| CN107651946A (en) * | 2017-10-30 | 2018-02-02 | 孝义市和中兴矿产有限公司 | A kind of calcium carbide fire door anti-thermal shock resistance to erosion castable |
| CN111285697A (en) * | 2020-04-09 | 2020-06-16 | 郑州正仟新材料有限公司 | Ceramic composite wear-resistant castable |
| CN112408998A (en) * | 2020-11-19 | 2021-02-26 | 浙江自立高温科技股份有限公司 | Ladle permanent layer castable |
| CN112707722A (en) * | 2020-12-30 | 2021-04-27 | 巩义市新科耐火材料有限公司 | Production method of modified corundum brick |
| CN116135815A (en) * | 2021-11-16 | 2023-05-19 | 宝武装备智能科技有限公司 | Lining castable for integral casting of blast furnace belly pipe |
| CN115893994A (en) * | 2022-11-03 | 2023-04-04 | 中冶武汉冶金建筑研究院有限公司 | Rare earth oxide modified corundum-mullite castable and use method and application thereof |
| CN115893994B (en) * | 2022-11-03 | 2023-12-08 | 中冶武汉冶金建筑研究院有限公司 | Rare earth oxide modified corundum-mullite castable and use method and application thereof |
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| CN105218128B (en) | 2017-12-26 |
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