Professional-Grade S2 Alumina Zirconia Carbon Slide Gate Plates, Redefining Ladle Flow Control Standards
S2 Alumina Zirconia Carbon Ladle Slide Gate Plates are high-performance refractory products designed specifically for controlling the flow of molten steel in ladles during the steelmaking process. It combines the characteristics of various high-quality raw materials such as alumina, zirconia, and carbon, and is made through advanced production processes. It has excellent comprehensive performance and plays a key role in steel production.
Product Characteristics
- High Erosion Resistance:Alumina has good chemical stability and high hardness, which can resist the chemical erosion of molten steel and slag. Zirconia, with its unique transformation toughening characteristics, further improves the erosion resistance of the material. S2 slide gate plates can still maintain a stable structure and performance in the high-temperature and highly erosive environment of molten steel and slag, effectively extending the service life.
- Excellent Thermal Shock Stability:The introduction of carbon endows the product with good thermal conductivity and a low coefficient of thermal expansion. Acting in synergy with alumina and zirconia, it greatly improves the thermal shock stability of the slide gate plates. During the steelmaking process, under frequent temperature changes and thermal shocks, S2 products can effectively resist thermal stress and avoid damage such as cracking and spalling, ensuring the continuity and stability of the production process.
- Good Wear Resistance:The high hardness and dense microstructure of the product make it have excellent wear resistance. During the flow of molten steel, the scouring and wear of the gate plates are effectively suppressed, ensuring the stability of the gate aperture, thereby achieving precise control of the molten steel flow rate and improving the quality and production efficiency of steel products.
- Low Permeability:By optimizing the raw material formula and production process, S2 Alumina Zirconia Carbon slide gate plates have extremely low permeability. This characteristic effectively prevents the leakage and secondary oxidation of molten steel, reduces the generation of inclusions in molten steel, and is of great significance for improving the purity of molten steel and the quality of steel products.

- Improve Steel Quality:Precise control of molten steel flow, good erosion resistance, and low permeability reduce the contamination of molten steel and the mixing of inclusions, helping to produce high-quality and high-purity steel products to meet the strict quality requirements of the high-end manufacturing industry.
- Reduce Production Costs:The long service life and stable performance reduce the replacement frequency and maintenance costs of slide gate plates. At the same time, since it can effectively improve the quality of steel and reduce the scrap rate, the overall production cost is further reduced, and the economic benefits of the enterprise are improved.
- Suitable for Smelting of Various Steel Grades:With its excellent comprehensive performance, S2 slide gate plates can meet the smelting requirements of different steel grades, including ordinary carbon steel, alloy steel, and special steel, etc. It has a wide range of applicability and provides strong support for the diversified production of steel enterprises.
- Increase Production Efficiency:Stable and reliable flow control and good thermal shock stability make the steelmaking process more smooth, reducing the production interruption time caused by gate plate failures, increasing production efficiency, and helping enterprises achieve efficient production.



The detailed photos of S2 Slide Gate Plate with nozzle for your reference, we will do the customization according to your drawings and steel making condition,etc.
Chemical and Physical Properties |
Ladle Slide Gate Plate (General) |
Magnesia material |
Al-C |
Al- Zr-C |
apparent porosity % max |
10 |
8 |
8 |
Bulk Density g/cm3 min |
3.0 |
3.05 |
3.1 |
Compressive strength MPa min |
120 |
120 |
120 |
Al2O3 % min |
8 |
85 |
85 |
ZrO2 % min |
|
|
4 |
C % min |
3 |
3 |
3 |
MgO % |
65 min |
|
|
Service Life heats |
1-2 |
1-3 |
1-5 |
Shandong Sinorefractory New Materials Co.,Ltd (SinoRefractory)has been focusing on international marketing of flow control refractories in iron and steel industry for 17 years.
SinoRefractory is the second generation of refractories export enterprise developed out of EMEI Group.Supported by one of China's largest production bases in functional refractory materials.
Through years of development in the field of exporting top quality refractories to worldwide markets,SinoRefractory aims at researching,producing,marketing and exporting high standard Ladle slide gate plate,Ladle Nozzles,Well blocks,Purging plugs,Nozzle stuffing sand,Refractory castables, Slide gate Mechanisms etc.
Up to now,SinoRefractory has supplied high quality refractory products and services to nearly 70 top-hundred global steel enterprises.
SinoRefractory will always put clients'interest in the first place,striving to provide a wide range of services,including technical solution,pre-sales support,after-sales services,installation team support,professional know-how according to the changing of steelmaking condition,etc.
We are not only selling products,we are more focused on supporting,developing and growing together with clients.

Below are some FAQ and answers about ladle and tundish flow control refractories:
Q: What are the requirements for refractories for ladle?
A: The requirements of refractories for ladle mainly include:
* high temperature resistance
* thermal shock resistance
* resistance to the erosion of the slag
* high temperature with sufficient mechanical strength
* the lining has a certain degree of expansion
Q:What are the reasons for the destruction of refractories for ladle?
A: The main causes of damage are as follows:
When the ladle transports high-temperature molten steel, the high-temperature molten steel and slag at about 1680ºC scour and erode it, especially in the slag line part, the scouring and erosion is more serious, and it is an important factor to decide the service life of the ladle.
LF and other extra-oven refining treatment on the unburnt brick damage is serious.
Q:What steel grades are different materials of slide plate bricks suitable for respectively?
A: Different materials of slide plate bricks are applicable to different steel grades. For example,
Al2O3-ZrO2-C slide gate plate can be used as ladle sliding gate plate due to its excellent erosion resistance and thermal shock stability, which can adapt to the casting of various steel grades, and ther are the following materilas based on customer's steel making condition: the MgO-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, MgO-Al-C, and so on.
For more details, feel free to send inquiry to us.