wanhaorefractory

Due to unstable factors in converter operation, premature damage may occur in certain areas of the furnace lining. At this point, repairs to the converter lining are required and must be maintained until the lining reaches the end of its service life. Repairing the lining helps balance wear distribution, reduce production costs, and extend its …

Characteristics and processes of refractory materials for converter lining repair Read More »

The application method for induction furnace repair materials depends on the type, extent, and location of the furnace lining damage, and is mainly divided into two categories: localized cold repair and hot repair. The following are common application steps compiled from publicly available information: Localized cold repair (suitable for small-area damage) When the furnace lining has …

The application method for induction furnace repair materials Read More »

By modifying the construction process of castable refractories, their performance can be significantly enhanced. Controlling the water-to-binder ratio effectively increases the bulk density of the castable, reduces porosity, and improves its resistance to erosion. Aluminum-magnesium ladle refractories exhibit excellent properties, yet during operation, they endure significant slag erosion and molten steel erosion. Both forms of …

Improving the construction process of refractory castables to extend ladle service life Read More »

MgO-C bricks are primarily used in the headspace and slag line areas when refining ladle furnaces and ladles. Depending on operating conditions, refractories in these zones must withstand high temperatures, thermal shock, and mechanical erosion caused by slag attack. Previously, magnesium-chromium refractories were selected for these areas, but their use has declined due to chromium’s …

Application of magnesium carbon bricks in the iron and steel metallurgy industry Read More »

Magnesium carbon bricks are refractory materials composed of high-melting-point basic magnesium oxide (melting point 2800°C) and high-melting-point carbon materials resistant to slag penetration. Various non-oxide additives are incorporated and bonded using carbon-based binders. These bricks are primarily used in the linings of converters, AC electric arc furnaces, DC electric arc furnaces, and slag lines of …

Performance characteristics and production process of refractory magnesium carbon bricks Read More »

The new technologies and processes required for producing high-value-added specialty steels also impose higher demands on the service life of ladle refractories. At Benxi Steel’s Plate Rolling Mill, the output of pipeline steel, rectangular billets, and other deeply desulfurized steels refined via the LF route have increased annually. Furthermore, following the completion of ladle dual-vent …

Analysis of erosion causes in magnesium-carbon bricks of the slag line in a 180-ton ladle Read More »

In recent years, with the development of the market economy and social progress, enterprises have faced persistently high raw material and labor costs, making the development and production operations of the refractory materials industry increasingly difficult. Compounded by the growing scarcity of refractory resources, there is a stronger emphasis on conserving raw materials and reducing …

Process technology for reducing ladle refractory consumption Read More »

The current state of steel production involves the extensive use of coal as the primary raw material, resulting in significant CO₂ emissions. Within Japan’s total CO₂ emissions, the steel industry accounts for approximately 12%, with blast furnaces contributing the most at 40% of the sector’s total. To reduce CO₂ emissions, measures such as charging scrap …

What should be done when the lining damage rate of the converter charging furnace wall is too fast? Read More »

Factors affecting the service life of converter tapping nozzles were addressed by modifying the nozzle seat bricks and sleeve bricks, improving the nozzle assembly process, optimizing the nozzle replacement procedure, and enhancing the material quality of the nozzle sleeve bricks. Concurrently, measures such as reducing the iron oxide content in slag and enhancing slag retention …

Production practices for improving the service life of converter tapholes Read More »

The erosion mechanism of MgO-C stopper heads in continuous casting at a steel mill was investigated using XRF, XRD, and SEM-EDS analysis. Results indicate that a high-vacuum zone forms near the flow control point in the continuous casting ladle. MgO reduction leads to grain decomposition and fragmentation, supplying magnesium to the molten steel and forming …

Erosion mechanism and improvement measures for MgO-C plug rods Read More »