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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

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:

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

Due to the wide variety of refractory materials and the diverse raw materials used in their production, spent refractories come in many different types. When determining how to process spent refractories, different treatment methods should be considered based on factors such as the degree of erosion, the location of use, and the type of refractory

The bottom argon blowing technique in ladles not only effectively balances the composition and temperature of molten steel but also causes the reaction products between slag and refractory materials to rise to the surface through dispersed microbubbles, thereby enhancing cleanliness. Argon blowing treatment plays a crucial role in improving ingot quality and stabilizing ingot casting

Refractory materials refer to inorganic non-metallic materials with a refractoriness of no less than 1580°C. They serve as structural materials for thermal equipment such as high-temperature kilns, as well as materials for industrial high-temperature vessels and components, capable of withstanding corresponding physical-chemical changes and mechanical stresses. Refractory materials are high-temperature structural materials manufactured from natural