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 […]
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,
Performance characteristics and production process of magnesium-carbon refractory bricks Read More »
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 »
Refractory castables, also known as unshaped refractories, are granular and powdered materials made from refractory substances, combined with a specific amount of binder and water. They possess high fluidity, making them suitable for application via casting; they are unshaped refractories that harden without the need for heating. They are typically formed on-site through casting, vibration,
Magnesium-carbon bricks for oxidation prevention Magnesia-carbon bricks are composite materials consisting of magnesia and carbon. Graphite plays a key role in inhibiting slag penetration and providing erosion resistance, while resin-bonded carbon provides the structural strength of the bricks. However, the greatest weakness of both resin-bonded carbon and graphite is their susceptibility to oxidation. Therefore, since
An in-depth analysis of the anti-oxidation properties of magnesium-carbon bricks Read More »
The application of top-bottom oxygen blowing technology and slag quenching and furnace protection technology has expanded the range of products produced in the converter and significantly improved quality and production efficiency. Tapping, as the final step in the converter steelmaking process, has become a key factor influencing the quality, output, and product variety of steelmaking.
Currently, electric furnaces used for smelting cast iron (mainly referring to industrial frequency or medium frequency induction furnaces) generally use acidic or neutral materials for furnace lining (i.e., furnace lining refractory materials), while strictly avoiding the use of alkaline materials. The fundamental reason for this is the “chemical compatibility between the furnace lining refractory material
The global steel industry is intensifying its efforts to move away from fossil fuels in order to reduce its specific CO2 footprint. Utilizing electricity to melt and blend metallic ferroalloys such as scrap steel, pig iron, direct reduced iron (DRI), and hot-pressed iron (HBI) helps reduce the CO2 footprint, but it also presents new challenges.
The lining of a coreless induction furnace can suffer varying degrees of damage due to prolonged melting or improper operation. This damage can often be salvaged through early repairs, saving both cost and time. Based on experience, we have summarized the following causes of lining damage in coreless induction furnaces and their corresponding repair methods:
Five practical solutions for repairing damage to induction furnace linings Read More »
As a reaction vessel for steelmaking, the converter’s shell is formed by welding steel plates and consists of, from the outside in, an insulating layer, a permanent layer, and a working layer. In China, magnesium-carbon bricks with a carbon content of 14–18% are commonly used as refractory materials for converters, whereas European countries generally opt
Factors affecting the service life of converter Read More »
