slide gate plate
The Ladle Slide Gate Plate is mainly used to control molten steel flow from the ladle to the tundish. It is a key refractory component in the steel continuous casting process and is installed in the ladle sliding gate mechanism. The quality of the slide directly affects the stability of the molten steel flow, the smoothness of the continuous casting process, and the quality of the final steel.
During the molten steel tapping process, the slide adjusts the opening size through the sliding mechanism so that the molten steel enters the tundish at the set flow rate to ensure the quality of the ingot and the stability of the casting. At the same time, high-quality ladle slides have the characteristics of high-temperature resistance, corrosion resistance, thermal shock resistance, and low porosity, which can effectively extend the service life of the ladle and improve the production efficiency of the steel plant.
In the ladle flow rate control system, the ladle slide is usually used in conjunction with refractory materials such as nozzles and seat bricks to ensure the stability and safety of the molten steel flow. These refractory components work together to optimize the continuous casting process and improve the overall life of the refractory materials. Contact us for more solutions for ladle slides and refractory materials!
Tap Hole Clay Performance
High Alumina Slide Gate Plate
| Item | Index | HBLT80 | HBLT75 | HBLT70 |
|---|---|---|---|---|
| Al₂O₃ (%) | ≥ | 80 | 75 | 70 |
| C (%) | ≥ | 2 | 3 | 3 |
| Apparent Porosity (%) | Non-impregnation | ≤13 | ≤13 | ≤13 |
| Impregnation | ≤10 | ≤10 | ≤10 | |
| Bulk Density (g/cm³) | Non-impregnation | ≥2.9 | ≥2.85 | ≥2.75 |
| Impregnation | ≥2.95 | ≥2.9 | ≥2.85 | |
| Cold Crushing Strength (MPa) | Non-impregnation | ≥80 | ≥70 | ≥60 |
| Impregnation | ≥100 | ≥90 | ≥80 |
Aluminum Zirconium Carbon Slide Gate Plate
| Item | Index | HBLTG80 | HBLTG75 | HBLTG70 | HBMLT80 |
|---|---|---|---|---|---|
| Al₂O₃ (%) | ≥ | 80 | 75 | 70 | / |
| Al₂O₃ + MgO (%) | ≥ | / | / | / | 80 |
| C (%) | ≥ | 3 | 3 | 4 | 3 |
| ZrO₂ (%) | ≥ | 4 | 4 | 4 | / |
| Apparent Porosity (%) | Non-impregnation | ≤13 | ≤13 | ≤13 | ≤13 |
| Impregnation | ≤10 | ≤10 | ≤10 | ≤10 | |
| Bulk Density (g/cm³) | Non-impregnation | ≥3.0 | ≥2.95 | ≥2.9 | ≥2.75 |
| Impregnation | ≥3.05 | ≥3.0 | ≥2.95 | ≥2.8 | |
| Cold Crushing Strength (MPa) | Non-impregnation | ≥90 | ≥90 | ≥80 | ≥70 |
| Impregnation | ≥110 | ≥110 | ≥100 | ≥90 |
Comparison of Other Slide Gate Plate Materials
| Type | Main Components | Suitable Environment | Main Performance |
|---|---|---|---|
| High Alumina Slide Plate | Al₂O₃ ≥ 75% | General molten steel flow control | High-temperature resistance, erosion resistance, cost-effective |
| Aluminum-Carbon Slide Plate | Al₂O₃ + C | Medium and low carbon steel casting | Thermal shock resistance, erosion resistance, strong adaptability |
| Aluminum-Zirconium-Carbon Slide Plate | Al₂O₃ + ZrO₂ + C | Ultra-high temperature, special steel-grades | High erosion resistance, oxidation resistance |
| Magnesia-Carbon Slide Plate | MgO + C | High-temperature, alkaline steel | Strong resistance to alkaline erosion, high-temperature stability |
| Zirconia Slide Plate | ZrO₂ ≥ 80% | Ultra-high temperature, special steel grades | Superior heat resistance, erosion resistance, extended lifespan |
How to use the ladle slide correctly?
Installation method: Correctly match the slide and the nozzle to ensure smooth sliding and no leakage of molten steel.
Maintenance: Regularly check the wear of the slide and replace it when necessary to avoid molten steel overflow due to damage to the slide.
Optimize service life: Select the best matching slide material according to the steel plant production process to reduce production costs and increase the life of the slide.
Advantages of slide gate plate refractories
High-performance ladle slides can effectively reduce production costs, improve continuous casting efficiency, and optimize molten steel quality. The following are the core advantages of our slides:
- High refractory performance
Mainly made of high aluminum, aluminum carbon, aluminum zirconium carbon, magnesium carbon, or zirconium materials, it can work stably for a long time in high-temperature environments above 1600℃. Excellent erosion and corrosion resistance, effectively resisting the erosion of molten steel and slag, improving durability. - Low porosity, high density, and extended service life
Adopting advanced production technology, the porosity is less than 10%, which prevents molten steel from penetrating and improves the slide’s anti-erosion ability. High-density design ensures that the slide maintains a stable structure under high-temperature erosion and is not easily broken or damaged. - High strength and excellent thermal shock resistance
Slides need to work under the alternating effects of high temperature and cooling. Excellent thermal shock resistance can avoid cracking and improve safety. The composite structure optimization design ensures that the slide can still operate stably under extreme working conditions. - Precise flow control to improve the quality of ingots
The sliding mechanism can be used to precisely adjust molten steel’s flow rate, optimize the crystallizer’s filling, and improve the quality of ingots. Avoid excessive flow that causes crystallizer erosion, improve steel purity, and reduce inclusions. - Adapt to the production needs of various steel grades
For different molten steel compositions and smelting processes, a variety of slide plate materials such as high aluminum, aluminum carbon, aluminum zirconium carbon, magnesium carbon, and zirconium are provided to ensure the best match. It can meet the continuous casting process requirements of different steel grades such as carbon steel, stainless steel, and high alloy steel.
APPLICATION
The ladle slide gate plate is widely used in steel smelting and continuous casting processes as a core component of the ladle flow control system. It is mainly used to control the flow of molten steel from the ladle to the tundish Ensuring casting stability and maintaining the purity of the molten steel. Its main application scenarios include
Slide Gate Plate
zirconia plates, cores, and bowls for superior wear resistance.
Stable steel flow, enhanced casting accuracy.
Thermal shock resistance, and less downtime.
Ladle Slide Gate Plate
In the converter steelmaking process, the ladle slide gate plate is used to control the flow of high-temperature molten steel, ensure the full mixing of alloy additives, and optimize the refining effects such as deoxidation and desulfurization.
Electric Arc Furnace Steelmaking (EAF)
The ladle slide gate plate plays a key role in the subsequent refining process of electric arc furnace steelmaking, controlling the flow of molten steel so that the molten steel can enter the tundish smoothly to ensure the stability of the continuous casting process.
Ladle Furnace (LF) Refining
In the ladle refining furnace (Ladle Furnace), the slide gate plate cooperates with the nozzle system to accurately control the flow rate of molten steel, optimize the composition of molten steel, and improve the quality of steel.
VD/VOD vacuum refining
During vacuum degassing (VD) or vacuum oxygen decarburization (VOD), the ladle slide cooperates with the ladle seat brick and sliding nozzle to ensure that the molten steel flows smoothly in a low-oxygen environment, reduces the gas content in the molten steel, and improves the purity of the steel.
Continuous Casting
In the continuous casting process, the slide accurately adjusts the flow of molten steel to avoid defects in the billet caused by too fast or too slow molten steel, ensure high-quality continuous casting production, and improve the yield rate of the billet.
Special steel smelting
In the production of high-end steel grades such as stainless steel, bearing steel, and high-alloy steel, the ladle slide works in synergy with high-performance seat bricks, nozzles, and other refractory materials to ensure a stable flow of molten steel, avoids secondary oxidation, and improves the purity and performance stability of steel.
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