The formation of a crust at the bottom of an electric arc furnace (EAF) is a common problem in the production of high-alloy steel. This crust formation leads to a series of process issues: reduced furnace capacity, lower tapping rate, decreased tapping success rate, and reduced EAF smelting yield. This study investigated the crust formation …
High-alumina bricks are arguably among the most widely used refractory bricks in the refractory industry. Available in hundreds of different specifications and sizes, they are suitable for use in various thermal furnaces across industries such as steel, building materials, and power generation. Generally, aluminosilicate refractory materials with an Al₂O₃ content exceeding 48% are collectively referred …
Properties, Manufacturing Process, and Applications of High-Alumina Bricks Read More »
I. Construction of Refractory Castables Before construction, the mixing equipment, transportation vehicles, vibrating tools, and the area to be poured must be inspected for their integrity and cleanliness; the formwork, surrounding refractory bricks, and insulation layer’s anti-water loss measures must be checked; rust removal of equipment, anchors, anchor brick type, size, arrangement, welding quality, and …
This paper analyzes the smelting processes of continuous casting ladles and off-line refining ladles such as LF/LF+VD, VOD, RH, SL/KIP, and CAS/CAS-OB, summarizes the main types of refractory materials used for the linings of continuous casting ladles and off-line refining ladles, briefly examines the advantages and disadvantages of various refractory materials, their application locations, and …
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 …
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 »
