 |
| Quantity: | |
|---|---|
Magnesium-aluminate spinel crucibles are primarily used in the metallurgical industry for high-temperature applications such as ladle linings and castables. They are suitable for high-temperature melting applications such as steelmaking and steel casting.
1. Ladle Lining
Magnesium-aluminate spinel crucibles can withstand high temperatures and alkaline slag corrosion. They are commonly used in ladle linings in steelmaking furnaces, improving the corrosion resistance of refractory materials and extending their service life.
2. Castables
In the steelmaking process, magnesium-aluminate spinel castables are often used in the linings of crucible-type induction furnaces. Their high melting point and low thermal expansion coefficient adapt to high-temperature environments while also enhancing the lining's thermal shock resistance.
3. Other High-Temperature Applications
Beyond metallurgy, magnesium-aluminate spinel is also suitable for linings in high-temperature equipment such as cement rotary kilns and the glass industry due to its excellent corrosion resistance and thermal shock resistance.
Characteristics
1. High-Temperature Resistance
It can withstand temperatures exceeding 1800°C and is not easily softened or melted at high temperatures, making it suitable for high-temperature processes such as vacuum induction smelting.
2. Corrosion Resistance
Strong stability against acids, alkalis, and chemicals, capable of withstanding corrosion from molten steel and other chemical media.
3. Thermal Shock Stability
Can withstand large temperature fluctuations without cracking or disintegration, making it suitable for environments with frequent temperature fluctuations.
4. Mechanical Properties
High compressive strength and wear resistance, capable of withstanding moderate mechanical loads.
5. Low Thermal Conductivity
Low thermal conductivity helps reduce heat transfer and improve equipment energy efficiency.
Our Advantages
1. It completely eliminates the outdated process of manually pounding furnace charge.
2. Melting time is reduced by over 15% compared to using traditional furnace linings.
3. Crucible installation takes only 30 minutes.
4. Service life: Approximately 200 precision castings for a small furnace and approximately 150 for a 6-ton high-manganese steel furnace.
5. Energy savings of over 10% compared to conventional melting methods.
Parameters
Installation and Maintenance
1. Clean the interior of the IF furnace, clear the induction coil of debris, check for leaks, and clean the furnace bottom.
2. Mix the filler: alkaline magnesia or neutral corundum, using a ratio of 30% coarse, 35% medium, and 35% fine. Add 2.5%-3% boric acid, mix thoroughly, and use immediately. You can also use other existing furnace materials. Any material other than quartz sand can be used. All materials must be dry-beaten; no water is required.
3. Wrap the induction coil with asbestos cloth to keep it flat. Press down the top with a heavy object or secure it with wire to prevent it from falling.
4. Add filler material to the furnace bottom, tamp it down firmly, and level it with a spirit level. Adjust the height so that the crucible's floor is level with the first induction coil. (Check the flatness of the crucible's outer bottom to adjust the furnace bottom's levelness. The crucible's bottom may appear moon-like.)
5. Use two lifting ropes (wire ropes) to lift the crucible vertically and place it inside the induction coil.
6. Place the crucible vertically in the center of the induction coil (improper installation will directly affect the crucible's service life).
7. Add filler material between the crucible and the induction coil, 3-5 cm at a time, tamping it down layer by layer until it reaches approximately 5 cm from the furnace opening. Brush the crucible opening and filler material with water glass, then cast the furnace collar.
8. Evenly attach the crucible collar sand to the crucible and hammer it firmly with a rubber hammer (to ensure it does not crack after the furnace is opened).
9. Use the crucible collar sand to build up the crucible collar.
10. Item 7 above is of paramount importance and must be strictly followed, as it directly impacts the safety and lifespan of the crucible
Precautions
The lifespan of the crucible is directly related to the installation work of the furnace installer. As long as the installation is done properly and according to the instructions, you will achieve satisfactory results with the crucible. Please note the following:
1. Install the crucible strictly according to the crucible installation and operating instructions.
2. After installing the crucible, clean any debris from the furnace chamber. When opening a new crucible, be careful to place materials gently. Do not throw large iron blocks into the crucible to avoid damaging it. When running the first furnace with a newly installed crucible, do not increase the intermediate frequency power too quickly to facilitate bonding between the crucible and the fixed filler.
3. Pay close attention to changes in the crucible during use and address any issues promptly.
4. After a certain number of heats, the crucible's walls will become thinner. When the crucible's wall thickness is about to decrease to less than one centimeter, discontinue use and replace it with a new one.
Magnesium-aluminate spinel crucibles are primarily used in the metallurgical industry for high-temperature applications such as ladle linings and castables. They are suitable for high-temperature melting applications such as steelmaking and steel casting.
1. Ladle Lining
Magnesium-aluminate spinel crucibles can withstand high temperatures and alkaline slag corrosion. They are commonly used in ladle linings in steelmaking furnaces, improving the corrosion resistance of refractory materials and extending their service life.
2. Castables
In the steelmaking process, magnesium-aluminate spinel castables are often used in the linings of crucible-type induction furnaces. Their high melting point and low thermal expansion coefficient adapt to high-temperature environments while also enhancing the lining's thermal shock resistance.
3. Other High-Temperature Applications
Beyond metallurgy, magnesium-aluminate spinel is also suitable for linings in high-temperature equipment such as cement rotary kilns and the glass industry due to its excellent corrosion resistance and thermal shock resistance.
Characteristics
1. High-Temperature Resistance
It can withstand temperatures exceeding 1800°C and is not easily softened or melted at high temperatures, making it suitable for high-temperature processes such as vacuum induction smelting.
2. Corrosion Resistance
Strong stability against acids, alkalis, and chemicals, capable of withstanding corrosion from molten steel and other chemical media.
3. Thermal Shock Stability
Can withstand large temperature fluctuations without cracking or disintegration, making it suitable for environments with frequent temperature fluctuations.
4. Mechanical Properties
High compressive strength and wear resistance, capable of withstanding moderate mechanical loads.
5. Low Thermal Conductivity
Low thermal conductivity helps reduce heat transfer and improve equipment energy efficiency.
Our Advantages
1. It completely eliminates the outdated process of manually pounding furnace charge.
2. Melting time is reduced by over 15% compared to using traditional furnace linings.
3. Crucible installation takes only 30 minutes.
4. Service life: Approximately 200 precision castings for a small furnace and approximately 150 for a 6-ton high-manganese steel furnace.
5. Energy savings of over 10% compared to conventional melting methods.
Parameters
Installation and Maintenance
1. Clean the interior of the IF furnace, clear the induction coil of debris, check for leaks, and clean the furnace bottom.
2. Mix the filler: alkaline magnesia or neutral corundum, using a ratio of 30% coarse, 35% medium, and 35% fine. Add 2.5%-3% boric acid, mix thoroughly, and use immediately. You can also use other existing furnace materials. Any material other than quartz sand can be used. All materials must be dry-beaten; no water is required.
3. Wrap the induction coil with asbestos cloth to keep it flat. Press down the top with a heavy object or secure it with wire to prevent it from falling.
4. Add filler material to the furnace bottom, tamp it down firmly, and level it with a spirit level. Adjust the height so that the crucible's floor is level with the first induction coil. (Check the flatness of the crucible's outer bottom to adjust the furnace bottom's levelness. The crucible's bottom may appear moon-like.)
5. Use two lifting ropes (wire ropes) to lift the crucible vertically and place it inside the induction coil.
6. Place the crucible vertically in the center of the induction coil (improper installation will directly affect the crucible's service life).
7. Add filler material between the crucible and the induction coil, 3-5 cm at a time, tamping it down layer by layer until it reaches approximately 5 cm from the furnace opening. Brush the crucible opening and filler material with water glass, then cast the furnace collar.
8. Evenly attach the crucible collar sand to the crucible and hammer it firmly with a rubber hammer (to ensure it does not crack after the furnace is opened).
9. Use the crucible collar sand to build up the crucible collar.
10. Item 7 above is of paramount importance and must be strictly followed, as it directly impacts the safety and lifespan of the crucible
Precautions
The lifespan of the crucible is directly related to the installation work of the furnace installer. As long as the installation is done properly and according to the instructions, you will achieve satisfactory results with the crucible. Please note the following:
1. Install the crucible strictly according to the crucible installation and operating instructions.
2. After installing the crucible, clean any debris from the furnace chamber. When opening a new crucible, be careful to place materials gently. Do not throw large iron blocks into the crucible to avoid damaging it. When running the first furnace with a newly installed crucible, do not increase the intermediate frequency power too quickly to facilitate bonding between the crucible and the fixed filler.
3. Pay close attention to changes in the crucible during use and address any issues promptly.
4. After a certain number of heats, the crucible's walls will become thinner. When the crucible's wall thickness is about to decrease to less than one centimeter, discontinue use and replace it with a new one.
