CN103787674A - Carbon-free steel ladle lining fire brick - Google Patents
Carbon-free steel ladle lining fire brick Download PDFInfo
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- CN103787674A CN103787674A CN201210435265.5A CN201210435265A CN103787674A CN 103787674 A CN103787674 A CN 103787674A CN 201210435265 A CN201210435265 A CN 201210435265A CN 103787674 A CN103787674 A CN 103787674A
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Abstract
The invention discloses a carbon-free steel ladle lining fire brick which comprises the following components in parts by weight: 16-18 parts of 7-10mm white corundum particles, 20-22 parts of 4-7mm white corundum particles, 6-8 parts of 1-4mm white corundum particles, 3-5 parts of -200-mesh alpha-Al2O3, 6-8 parts of -200-mesh fused magnesia-alumina spinel powder, 5-7 parts of -200-mesh magnesium oxide, 2-4 parts of -200-mesh metal aluminum powder, 1.5-2.5 parts of sodium hexametaphosphate, 3-5 parts of a 25% magnesium chloride solution and 0.5-1.5 parts of sodium lignosulphonate.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, relate in particular to a kind of carbon-free steel cylinder-packing refractory brick.
Background technology
Along with the development of external refining and continuous casting technology, ladle is changed into the outer liquid steel refining equipment of stove of function complexity gradually by the splendid attire steel in water container of original function singleness.The molten steel prolongation of the residence time and raising of tapping temperature in ladle make the Working environment of ladle become harsher.For adapting to the change of ladle working environment, domestic ladle has generally adopted Al2O3MgOC Bricks and aluminium riched spinel carbon brick.But it is high to adopt Al2O3MgOC Bricks and aluminium riched spinel carbon brick to make the ladle hot conductivity of liner, and liquid steel temperature declines fast, being unfavorable for that continuous casting is produced carries out smoothly, and on the other hand, carbonaceous article is obvious to molten steel recarburization effect, is not suitable with smelting low carbon steel and Clean Steel.Therefore, in recent years, lining material in the ladle is gradually to Non-carbonized future development.
Ladle liner carbon-free material has pressed machine brick, monolithic castable and pouring precast block etc.Monolithic castable is in the time of construction, and there is strict requirement temperature, amount of water, conservation system, baking regime aspect to external world, also needs corresponding construction machinery as auxiliary facility simultaneously.In order to improve turnover rate and the utilization ratio of ladle, shorten construction, maintenance and shared time of baking, meet the wearing quality to the demand of Clean Steel Smelting and raising lining material in the ladle, increasing user has adopted prefabricated section to build ladle by laying bricks or stones, result of use has met or exceeded on-the-spot integrated poured working lining gradually, has become a new trend of amorphous refractory construction and utilisation technology aspect.
The ultra low-carbon steels such as smelting silicon steel, Bridge Steel, automobile slab must pass through the refining under vacuum condition of VD stove, ladle bottom Argon is stirred simultaneously, by LF stove electric-arc heating, furnace reduction atmosphere, make white slag refining, gas stirring etc., strengthening thermodynamics and kinetics condition, desulfurization, alloying, intensification etc.Therefore slag basicity scope is large, and the temperature of molten steel and slag is higher, and the residence time of molten steel in ladle extends, and thermal shock resistance is strong, and whipping force is large, the damage of internal lining aggravation to ladle.Existing ladle prefabricated section thermal conductivity is relatively still higher, and its heat-shock resistance, scour resistance are still weak, and work-ing life is low, can not meet the requirement that ladle refining is produced completely.
Summary of the invention
The object of the invention is to propose a kind of carbon-free steel cylinder-packing refractory brick, this refractory brick has good anti-thermal shock, slag corrosion resistance, scour resistance and heat-insulating property, and long service life.
For reaching this object, the present invention by the following technical solutions:
A kind of carbon-free steel cylinder-packing refractory brick, this refractory brick is made up of following component in weight part: 7-10mm white fused alumina particle 16-18 part, 4-7mm white fused alumina particle 20-22 part, 1-4mm white fused alumina particle 6-8 part ,-200 order α-Al
2o
33-5 part ,-200 order electric smelting aluminum-spinel powder 6-8 parts ,-200 order magnesium oxide 5-7 parts ,-200 order metallic aluminium powder 2-4 parts, Sodium hexametaphosphate 99 1.5-2.5 part, magnesium chloride solution 3-5 part of concentration 25%, the 0.5-1.5 of wooden sodium sulfonate part.
Preferably, this refractory brick is made up of following component in weight part: 7-10mm white fused alumina particle 16.5-17.5 part, 4-7mm white fused alumina particle 20.5-21.5 part, 1-4mm white fused alumina particle 6.5-7.5 part ,-200 order α-Al
2o
33.5-4.5 part ,-200 order electric smelting aluminum-spinel powder 6.5-7.5 parts ,-200 order magnesium oxide 5.5-6.5 parts ,-200 order metallic aluminium powder 2.5-3.5 parts, Sodium hexametaphosphate 99 1.8-2.2 part, magnesium chloride solution 3.5-4.5 part of concentration 25%, the 0.8-1.2 of wooden sodium sulfonate part.
Most preferably, this refractory brick is made up of following component in weight part: 17 parts of 7-10mm white fused alumina particles, 21 parts of 4-7mm white fused alumina particles, 7 parts of 1-4mm white fused alumina particles ,-200 order α-Al
2o
34 parts ,-200 7 parts, order electric smelting aluminum-spinel powder ,-200 6 parts, order magnesium oxide ,-200 3 parts of order metallic aluminium powders, 2 parts of Sodium hexametaphosphate 99s, 4 parts of the magnesium chloride solutions of concentration 25%, 1 part of wooden sodium sulfonate.
The present invention has following beneficial effect:
1) the present invention by unique technical recipe, has successfully solved not antiscour of refractory brick, and the problem that aggregate powder departs from effectively raises the thermal shock resistance of material.Owing to having added spinel in raw material, make refractory brick there is good Tough structure, low-thermal-expansion rate, lower thermal conductivity and preferably anti-saline and alkaline erosional competency.
2) in refractory brick raw material of the present invention, add magnesium chloride solution and the wooden sodium sulfonate of Sodium hexametaphosphate 99, concentration 25%, make anti-thermal shock, slag corrosion resistance, scour resistance and the heat-insulating property excellence of ladle.
3) refractory brick of the present invention has solved molten steel recarburization affects the problem of the Clean Steel quality of production, and production process is easy to realize, and cost is lower, improves more than 50% work-ing life than prior art simultaneously.
Embodiment
Embodiment mono-
A kind of carbon-free steel cylinder-packing refractory brick, this refractory brick is made up of following component in weight part: 16 parts of 7-10mm white fused alumina particles, 22 parts of 4-7mm white fused alumina particles, 6 parts of 1-4mm white fused alumina particles ,-200 order α-Al
2o
35 parts ,-200 6 parts, order electric smelting aluminum-spinel powder ,-200 7 parts, order magnesium oxide ,-200 2 parts of order metallic aluminium powders, 2.5 parts of Sodium hexametaphosphate 99s, 3 parts of the magnesium chloride solutions of concentration 25%, 1.5 parts of wooden sodium sulfonates.
Embodiment bis-
A kind of carbon-free steel cylinder-packing refractory brick, this refractory brick is made up of following component in weight part: 18 parts of 7-10mm white fused alumina particles, 20 parts of 4-7mm white fused alumina particles, 8 parts of 1-4mm white fused alumina particles ,-200 order α-Al
2o
33 parts ,-200 8 parts, order electric smelting aluminum-spinel powder ,-200 5 parts, order magnesium oxide ,-200 4 parts of order metallic aluminium powders, 1.5 parts of Sodium hexametaphosphate 99s, 5 parts of the magnesium chloride solutions of concentration 25%, 0.5 part of wooden sodium sulfonate.
Embodiment tri-
A kind of carbon-free steel cylinder-packing refractory brick, this refractory brick is made up of following component in weight part: 16.5 parts of 7-10mm white fused alumina particles, 21.5 parts of 4-7mm white fused alumina particles, 6.5 parts of 1-4mm white fused alumina particles ,-200 order α-Al
2o
34.5 parts ,-200 6.5 parts, order electric smelting aluminum-spinel powder ,-200 6.5 parts, order magnesium oxide ,-200 2.5 parts of order metallic aluminium powders, 2.2 parts of Sodium hexametaphosphate 99s, 3.5 parts of the magnesium chloride solutions of concentration 25%, 1.2 parts of wooden sodium sulfonates.
Embodiment tetra-
A kind of carbon-free steel cylinder-packing refractory brick, this refractory brick is made up of following component in weight part: 17.5 parts of 7-10mm white fused alumina particles, 20.5 parts of 4-7mm white fused alumina particles, 7.5 parts of 1-4mm white fused alumina particles ,-200 order α-Al
2o
33.5 parts ,-200 7.5 parts, order electric smelting aluminum-spinel powder ,-200 5.5 parts, order magnesium oxide ,-200 3.5 parts of order metallic aluminium powders, 1.8 parts of Sodium hexametaphosphate 99s, 4.5 parts of the magnesium chloride solutions of concentration 25%, 0.8 part of wooden sodium sulfonate.
Embodiment five
A kind of carbon-free steel cylinder-packing refractory brick, this refractory brick is made up of following component in weight part: 17 parts of 7-10mm white fused alumina particles, 21 parts of 4-7mm white fused alumina particles, 7 parts of 1-4mm white fused alumina particles ,-200 order α-Al
2o
34 parts ,-200 7 parts, order electric smelting aluminum-spinel powder ,-200 6 parts, order magnesium oxide ,-200 3 parts of order metallic aluminium powders, 2 parts of Sodium hexametaphosphate 99s, 4 parts of the magnesium chloride solutions of concentration 25%, 1 part of wooden sodium sulfonate.
Claims (3)
1. a carbon-free steel cylinder-packing refractory brick, is characterized in that, this refractory brick is made up of following component in weight part: 7-10mm white fused alumina particle 16-18 part, 4-7mm white fused alumina particle 20-22 part, 1-4mm white fused alumina particle 6-8 part ,-200 order α-Al
2o
33-5 part ,-200 order electric smelting aluminum-spinel powder 6-8 parts ,-200 order magnesium oxide 5-7 parts ,-200 order metallic aluminium powder 2-4 parts, Sodium hexametaphosphate 99 1.5-2.5 part, magnesium chloride solution 3-5 part of concentration 25%, the 0.5-1.5 of wooden sodium sulfonate part.
2. a kind of carbon-free steel cylinder-packing refractory brick as claimed in claim 1, it is characterized in that, this refractory brick is made up of following component in weight part: 7-10mm white fused alumina particle 16.5-17.5 part, 4-7mm white fused alumina particle 20.5-21.5 part, 1-4mm white fused alumina particle 6.5-7.5 part ,-200 order α-Al
2o
33.5-4.5 part ,-200 order electric smelting aluminum-spinel powder 6.5-7.5 parts ,-200 order magnesium oxide 5.5-6.5 parts ,-200 order metallic aluminium powder 2.5-3.5 parts, Sodium hexametaphosphate 99 1.8-2.2 part, magnesium chloride solution 3.5-4.5 part of concentration 25%, the 0.8-1.2 of wooden sodium sulfonate part.
3. a kind of carbon-free steel cylinder-packing refractory brick as claimed in claim 2, is characterized in that, this refractory brick is made up of following component in weight part: 17 parts of 7-10mm white fused alumina particles, 21 parts of 4-7mm white fused alumina particles, 7 parts of 1-4mm white fused alumina particles ,-200 order α-Al
2o
34 parts ,-200 7 parts, order electric smelting aluminum-spinel powder ,-200 6 parts, order magnesium oxide ,-200 3 parts of order metallic aluminium powders, 2 parts of Sodium hexametaphosphate 99s, 4 parts of the magnesium chloride solutions of concentration 25%, 1 part of wooden sodium sulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435265.5A CN103787674A (en) | 2012-11-03 | 2012-11-03 | Carbon-free steel ladle lining fire brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435265.5A CN103787674A (en) | 2012-11-03 | 2012-11-03 | Carbon-free steel ladle lining fire brick |
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| Publication Number | Publication Date |
|---|---|
| CN103787674A true CN103787674A (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210435265.5A Pending CN103787674A (en) | 2012-11-03 | 2012-11-03 | Carbon-free steel ladle lining fire brick |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495712A (en) * | 2016-10-17 | 2017-03-15 | 安徽马钢耐火材料有限公司 | Unburned ladle brick and preparation method thereof pressed by magnesium gel combined corundum spinelle machine |
| CN106747509A (en) * | 2016-12-13 | 2017-05-31 | 山西昊业新材料开发有限公司 | A kind of ladle wall carbon-free pressed machine brick and preparation method thereof |
| CN110171961A (en) * | 2018-12-20 | 2019-08-27 | 瑞泰科技股份有限公司 | A kind of aluminium chrome-magnesite firebrick and preparation method thereof |
| CN116063085A (en) * | 2022-12-19 | 2023-05-05 | 苏州大学 | In-situ spinel Dan Gangbao brick for high-cleanness steel smelting and preparation method thereof |
-
2012
- 2012-11-03 CN CN201210435265.5A patent/CN103787674A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495712A (en) * | 2016-10-17 | 2017-03-15 | 安徽马钢耐火材料有限公司 | Unburned ladle brick and preparation method thereof pressed by magnesium gel combined corundum spinelle machine |
| CN106747509A (en) * | 2016-12-13 | 2017-05-31 | 山西昊业新材料开发有限公司 | A kind of ladle wall carbon-free pressed machine brick and preparation method thereof |
| CN106747509B (en) * | 2016-12-13 | 2019-09-03 | 山西昊业新材料开发有限公司 | A kind of ladle wall carbon-free pressed machine brick and preparation method thereof |
| CN110171961A (en) * | 2018-12-20 | 2019-08-27 | 瑞泰科技股份有限公司 | A kind of aluminium chrome-magnesite firebrick and preparation method thereof |
| CN116063085A (en) * | 2022-12-19 | 2023-05-05 | 苏州大学 | In-situ spinel Dan Gangbao brick for high-cleanness steel smelting and preparation method thereof |
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Application publication date: 20140514 |