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 »
Stopper rods are shaped refractory materials used in continuous casting processes. They maintain mold level stability, control the linear flow rate of molten steel, and guarantee both surface and internal quality of the ingot. In actual production, stopper rods play a crucial role in maintaining stable steelmaking operations. Problems with the stopper rods, such as …
Analysis and improvement measures for the fracture problem of tundish plugger Read More »
To judge whether the performance of the overall stopper rod meets the requirements, the following aspects can be used: 1.Material difference Erosion Resistance: Integral stoppers come into contact with high-temperature molten steel and slag during the continuous casting process, so they must exhibit excellent resistance to erosion and erosion from these substances. This can be …
How to judge whether the performance of the integral stopper meets the requirements Read More »
Currently, nearly 80% of the world’s steel billets are produced using continuous casting technology. Long nozzles, stoppers, and submerged nozzles are key refractory materials for achieving high-reliability continuous casting, and their performance directly impacts continuous casting efficiency and billet quality. With the development of modern high-speed, high-efficiency continuous casting technology and clean steelmaking technologies, the …
Development trend of long nozzle, stopper and submerged nozzle in continuous casting Read More »
Air bricks are crucial functional components in the bottom-blown argon process for ladle secondary refining. They perform the metallurgical functions of both homogenizing and purifying molten steel. On the one hand, the argon gas agitation ensures uniform temperature and composition across the molten steel within the ladle. Furthermore, through the vacuum pump principle, argon bubbles …
Magnesia carbon bricks are a new type of refractory material that emerged in the 1970s. Made from high-temperature sintered or fused magnesia and carbon, and using various carbon binders, these unfired refractory materials retain the advantages of carbon-based refractories while overcoming the inherent shortcomings of alkaline refractories, such as poor spalling resistance and slag absorption. …
Characteristics and applications of magnesia carbon bricks Read More »
In highly corrosive industries like chemical engineering, metallurgy, and environmental protection, acid-resistant refractory castables serve as key lining materials, their performance directly impacting equipment life and production safety. This article, grounded in materials science principles and integrated with engineering practice, systematically explains the configuration techniques for acid-resistant refractory castables, providing practitioners with both professional and …
Common methods for configuring acid-resistant refractory castables Read More »
The tundish receives molten steel from the ladle throughout the steelmaking process and distributes it to the various molds through the tundish nozzle. This article discusses the metallurgical function of the tundish, the reasons for increasing tundish capacity, the critical height of the tundish, and the flow characteristics of the molten steel within the tundish. …
Five major metallurgical functions of the tundish Read More »
The 400,000-ton steel rolling mill renovation project utilizes a high-efficiency regenerative, all-blast furnace gas-fired heating furnace. This furnace integrates a high-efficiency regenerative combustion system and a reversing system, enabling dual preheating of air and gas to 1000°C. The furnace has an effective length of 30 meters, an inner width of 4.3 meters, and a normal …
Application of low-cement castables in regenerative heating furnaces Read More »
Heating furnaces are used in petroleum, chemical, metallurgy, machinery, building materials and other industries. The seven commonly used refractory castables for heating furnaces are: low cement, alumina cement, phosphate, mullite, lightweight, anti-dry slag, self-leveling castables. Other refractory materials include refractory fibers and plastics. (1) Low cement castable It is suitable for the high and medium …
Refractory castables and other refractory materials commonly used in heating furnaces Read More »
