With the trend toward larger continuous casting equipment, the steel throughput rate of long nozzles has gradually increased—rising from less than 1 t/min to over 7 t/min. This increase in throughput rate causes severe erosion of the inner wall; consequently, inner wall erosion has become the decisive factor determining the service life of high-throughput long […]
Eccentric Bottom Tapping (EBT) Electric Arc Furnace The EBT (Eccentric Bottom Tapping) electric arc furnace smelting process employs a “hot heel” practice (retaining a portion of the molten steel and slag). This establishes a molten bath right at the start of melting; combined with intensive oxygen blowing and bottom stirring, it creates favorable conditions for
Under what circumstances does an eccentric bottom tapping (EBT) hole require repair? Read More »
The most common type of brick we use for building houses is ordinary red brick, while refractory bricks are mainly used in the construction of high-temperature furnaces, aluminum smelting furnaces, and other high-temperature environments. Although both are bricks, they are fundamentally different. 1.Differences in shape and color 2.Different occasions of use 3.Different material compositions There
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Magnesia-carbon bricks are non-burning composite refractory materials made from high-melting-point basic oxide magnesium oxide (melting point 2800℃) and high-melting-point carbon materials that are difficult to wet by slag, with the addition of various non-oxide additives. They are bonded together using carbonaceous binders. Magnesia-carbon bricks are mainly used as linings in converters, AC electric arc furnaces,
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In recent years, the rapid development of ladle refining and continuous casting technologies has transformed the ladle into both a vessel for holding molten steel and a refining unit. This has significantly extended the residence time of molten steel within the ladle and led to higher tapping temperatures and more rigorous smelting conditions, resulting in
What are the commonly used binders for aluminum-magnesium castables? Read More »
1.Converter slide-gate slag-blocking process A key technology for producing clean steel is slag-free tapping, specifically the use of a slide-gate slag-blocking system at the converter taphole. Because the slide gate operates rapidly, it effectively blocks both initial and final slag during the tapping process. Furthermore, by integrating infrared slag detection with PLC control technology, the
EBT tapping hole EBT (Eccentric Bottom Tapping) technology, also known as eccentric bottom tapping, was successfully developed in 1978 by the German companies Mannesmann-Demag and Thyssen. EBT technology involves adding a tapping hole to the furnace bottom at the rear of the furnace, 20–60 cm from the furnace wall. The tapping hole consists of two
EBT tapping outlets and types of refractory materials used for EBT tapping outlets Read More »
Key Factors in Selecting Neutral Reactor Lining Materials: In the actual production process of medium-frequency furnaces, the thickness of the refractory materials used for the furnace lining is typically only 70 mm to 110 mm. The inner side of the lining comes into contact with high-temperature molten metal, while the outer side is in close
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Magnesia-carbon bricks are refractory materials made from high-melting-point basic magnesium oxide (melting point 2800°C) and high-melting-point carbon materials that are resistant to slag wetting. Various non-oxide additives are incorporated, and the mixture is bonded using a carbon-based binder. Magnesia-carbon bricks are primarily used for the linings of converters, AC arc furnaces, and DC arc furnaces,
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Basic refractory castables are granular and powdered materials formulated from refractory aggregates—primarily magnesia—along with binders and additives. Based on their composition, they can be classified into types such as magnesia, magnesia-alumina, magnesia-chrome, magnesia-silica, and spinel castables. What are the characteristics and applications of these basic refractory castables? Here, a manufacturer of refractory castables outlines their
What are the characteristics and applications of various basic refractory castables? Read More »
