Dimensions of lining bricks for oxygen steelmaking converter

Oxygen-top blown converter (OBC) lining firebrick size

In the steelmaking industry, oxygen-top blown converter (OBC) lining firebrick is a type of refractory material that is used to line the interior of the OBC vessel. It is important to select the right type and size of firebrick to ensure that the converter operates efficiently and safely.

The amount and size of firebrick required for OBC lining depend on various factors, such as the size of the vessel, the thickness of the lining, the firebrick composition and strength, the operating temperatures, and the design of the lining system. Generally speaking, high-temperature, monolithic firebrick is used for OBC linings, as this provides better performance due to its good thermal shock resistance, high strength and good thermal insulation properties.

The following are the standard firebrick sizes for the OBC lining:

• Half-brick (2.25in x 4.5in x 9in): Half-brick firebrick is primarily used as a filler brick, typically near the OBC’s taphole, or around the outer circumference of the air and gas injectors.

• Full-brick (4.5in x 9in x 9in): Full-brick firebrick is used for most OBC lining applications. It is typically arranged in a circular layout around the OBC vessel, with staggered joints.

• Jumbo-brick (6.75in x 13.5in x 19in): Jumbo-brick firebrick is primarily used as a transitional brick between the full-brick and the arch brick. It is typically arranged in an alternating pattern between full-brick in order to prevent thermal bridges.

• Arch brick (4.5in x 9in x 19in): Arch brick firebrick is used for the top of the OBC lining, and is usually arranged in a circular layout.

When selecting firebrick for OBC lining, it is important to consider the flame temperature and the expected service life of the OBC lining material. It is also important to choose refractory materials that match the size and shape of the OBC vessel and are available in the appropriate grades of strength and quality.

In conclusion, the selection of firebrick size for OBC lining is an important consideration in the design and operation of the OBC vessel, and is dependent on a variety of factors. It is important to select the right type and size of firebrick in order to ensure that the converter is able to operate safely and efficiently for as long as possible.

The high-oxygen steel refining converters is a major furnace found in the steel industry and requires a special, heavy-duty lining inside the walls of their shells. The lining material, known as refractory bricks, must have special properties in order to withstand the extreme heat, pressures and chemical reactions experienced during the steel production process.When it comes to refractory bricks for the high-oxygen steel refining converters, there are specific standards and requirements that must be met. The dimensions of the bricks must be accurate, with smooth surfaces that have no inconsistencies. The refractory bricks used in these converters must meet all of the structural, stress, and heat requirements. The top priority is to ensure the bricks can withstand the highest temperatures and chemical reactions that occur during the steel production process.The height and length of the refractory brick used in the high oxygen steel refining converter should fall between 8 and 9 inches, with the optimal width falling between 4 and 5 inches. The height of the brick is most important, as it must be closely monitored as it can directly affect the efficiency of the process. Any deviation from the size requirements can cause a decreased lifespan of the brick, less efficient performance of the converter, or safety hazards.

In order to ensure the highest quality of refractory bricks for these converters, inspectors should closely monitor the bricks on arrival and during the installation process. The bricks should be closely inspected to make sure that there are no cracks or chips, that they have a smooth surface, and that they are correctly sized. By making sure that the refractory bricks meet all of the relevant standards and requirements they can help ensure the safe, efficient, and workable operation of the converter.