As the use of refractory castables becomes increasingly widespread, there are indeed certain methods and techniques for selecting the appropriate material type and specifications. Refractory castables are classified as neutral, acidic, or alkaline, and are further distinguished as heavy-duty or lightweight. Heavy-duty refractory castables are generally used for the working layer, while lightweight castables are …
Magnesia-carbon refractories emerged in the 1970s and are now widely used in modern steel metallurgy, such as in the linings of various electric arc furnaces, ladles, and steelmaking refining furnaces (BOF, RH). Magnesia-carbon bricks are alkaline refractory materials made from magnesia and graphite using various binders. Graphite, as a crucial component of magnesia-carbon refractories, has …
Argon blowing typically involves placing one or more permeable bricks at the bottom of a casting ladle or a brick-built ladle. After tapping, argon gas is blown through these permeable bricks, causing agitation of the molten steel. Argon blowing promotes the flotation of emulsified slag droplets and inclusions in the steel, and can partially remove …
Understanding the materials and properties of steel ladle permeable bricks Read More »
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 »
