The stopper rod is a type of shaped refractory material utilized during the continuous casting process; it serves to maintain a stable liquid level within the mold, regulate the linear flow rate of the molten steel, and ensure both the surface and internal quality of the cast billet. In actual production, the stopper rod plays …
Operations at an intermediate-frequency (IF) furnace site involve the use of diverse equipment and entail the simultaneous, overlapping work of multiple trades; consequently, the environment is prone to sudden accidents and presents significant production hazards. It is therefore imperative to continuously increase investment in safety measures for IF furnace operations to ensure equipment integrity. Furthermore, …
On the surface, the smelting and pouring process appears relatively simple and quick; a single batch of molten steel takes only a few dozen minutes, without the cumbersome operations, intricate details, or lengthy timeframes associated with the mold-making process. However, upon closer examination, the smelting process involves much deeper theoretical knowledge—ranging from furnace lining characteristics, …
Additives for refractory materials are substances used to improve the workability (constructability), physical properties, microstructure, and performance of unshaped refractory materials. The dosage of additives varies depending on their specific properties and functions, typically ranging from a few ten-thousandths to a few percent of the total weight of the unshaped refractory mixture. They are generally …
The heating furnace is a critical thermal processing equipment in steel rolling facilities. In recent years, refractory plastic has been predominantly used for the furnace roof lining in domestic heating furnaces. The specific construction process is as follows: Anchorage installation → Billet compaction → Formwork removal → Plastic lining finishing → Perforation drilling → Contraction …
Construction process for refractory plastic in heating furnaces Read More »
Due to unstable factors in converter operation, premature damage may occur in certain areas of the furnace lining. At this point, repairs to the converter lining are required and must be maintained until the lining reaches the end of its service life. Repairing the lining helps balance wear distribution, reduce production costs, and extend its …
Characteristics and processes of refractory materials for converter lining repair Read More »
The application method for induction furnace repair materials depends on the type, extent, and location of the furnace lining damage, and is mainly divided into two categories: localized cold repair and hot repair. The following are common application steps compiled from publicly available information: Localized cold repair (suitable for small-area damage) When the furnace lining has …
The application method for induction furnace repair materials Read More »
By modifying the construction process of castable refractories, their performance can be significantly enhanced. Controlling the water-to-binder ratio effectively increases the bulk density of the castable, reduces porosity, and improves its resistance to erosion. Aluminum-magnesium ladle refractories exhibit excellent properties, yet during operation, they endure significant slag erosion and molten steel erosion. Both forms of …
Improving the construction process of refractory castables to extend ladle service life Read More »
MgO-C bricks are primarily used in the headspace and slag line areas when refining ladle furnaces and ladles. Depending on operating conditions, refractories in these zones must withstand high temperatures, thermal shock, and mechanical erosion caused by slag attack. Previously, magnesium-chromium refractories were selected for these areas, but their use has declined due to chromium’s …
Application of magnesium carbon bricks in the iron and steel metallurgy industry Read More »
Magnesium carbon bricks are refractory materials composed of high-melting-point basic magnesium oxide (melting point 2800°C) and high-melting-point carbon materials resistant to slag penetration. Various non-oxide additives are incorporated and bonded using carbon-based binders. These bricks are primarily used in the linings of converters, AC electric arc furnaces, DC electric arc furnaces, and slag lines of …
Performance characteristics and production process of refractory magnesium carbon bricks Read More »
