yilongrefractory

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 […]

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: