LG20 Low Thermal Expansion Slide Gate Plate for Thermal Shock Resistance in Iron-Steel Industry
SNREF Slide Gate Plate adopts High quality bauxite material , also takes tabular alumina, carbonaceous material and zirconia-containing material as main raw materials, adds in high performance antioxidants, uses phenolic resin as binder, formed under high-pressure and burned under high temperature. The slide plates have the advantages of high strength, good erosion resistance, thermal shock resistance and good stability etc., mainly used in large and medium-sized ladle.
The LG20 ladle slide gate plate is a crucial refractory component used in the steel - making process. It is designed to control the flow of molten steel from the ladle to the tundish with high precision.
Material Composition
- It is primarily composed of high - quality refractory materials such as high - alumina oxide, magnesium oxide, and silicon carbide. These materials are carefully selected for their excellent high - temperature performance, corrosion resistance, and thermal shock resistance. Optionally, the composition can be customized according to specific customer requirements.
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Product Features
- Good Thermal Shock Resistance: The LG20 slide gate plate can withstand repeated thermal cycles during the steel - making process without significant damage or deformation, ensuring its long - term reliable operation.
- High Strength at High Temperatures: It maintains high strength even at extremely high temperatures, which is essential for resisting the pressure and impact of molten steel.
- Strong Erosion Resistance: With excellent erosion - resistant properties, it can effectively resist the erosion of molten steel and slag, thus prolonging the service life of the slide gate plate.
- Low Fissure Expansion Coefficient: The low fissure expansion coefficient helps to minimize the occurrence of cracks and ensure the integrity of the plate, preventing molten steel leakage.
- Smooth Surface: The surface of the slide gate plate is smooth, which reduces the friction during the sliding process and enables precise control of the molten steel flow. Meanwhile, the smooth surface is also beneficial for reducing the adhesion of molten steel and slag, facilitating maintenance and cleaning.
Working Principle
The LG20 ladle slide gate plate works by adjusting the overlap degree of the upper and lower holes through the movement of the sliding plate, thereby controlling the flow rate and size of the molten steel flowing out of the ladle. This process can be accurately controlled by hydraulic or manual adjustment methods
| 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 |
Service Result for slide gate plate and nozzle system:
Service life depends on many points:
1)Different Raw Material,
2)Production Process(Firing temperature, oil immersion, drying temperature...)
3)Steel type
4)Steel making condition
5)Different operation mode
And so on....
LG20 Low Thermal Expansion Slide Gate Plate for Thermal Shock Resistance in Iron-Steel Industry
The slide plates have the advantages of high strength, good erosion resistance, thermal shock resistance and good stability etc.,mainly used in large and medium-sized ladle.
Application Scenarios
It is widely used in the basic zone of ladles, tundishes, and other metallurgical equipment in steel - making plants. It plays a vital role in the continuous casting process, including the flow control and rectification of molten steel, as well as gas stirring
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.
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