wanhaorefractory

1.The impact of changes in the function of steel ladles on refractory materials With the development of secondary refining, the ladle has evolved from a container for molten steel into a crucial metallurgical device for secondary refining. Consequently, the operating conditions for refractory materials used in ladles have changed significantly, primarily in the following aspects: …

12 things you need to know about steel ladle refractory materials Read More »

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 …

Additives for unshaped refractory castables Read More »

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 »