Refractory News

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 …

Development of ladle air bricks and damage analysis of their typical composite structures Read More »

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 »

In order to improve the purity of molten steel, the quality of ingots and production safety, in the construction of the dry material working layer of the tundish in continuous casting production, standardized operations and refined management measures such as separate material selection, layered control, and key reinforcement are adopted, which effectively improves the service …

Increase the service life of the tundish Read More »

Ladle is an important thermal equipment in steel mills, mainly composed of cladding, refractory lining and SN mechanism. With the continuous development of metallurgical technology, the smelting temperature and continuous casting ratio have increased, and the residence time of molten steel in the ladle has been extended. The use of ladle lining directly affects the …

Analysis on the damage cause of refractory material in ladle lining Read More »

Ladle, also known as steel ladle, steel ladle, ladle, etc., is a container for storing, transporting and processing molten steel, and is an important equipment for refining tasks. Ladle has two main functions: the first is to receive molten steel; the second is refining outside the furnace. With the diversification of secondary refining, the consumption …

Technical development of monolithic refractory materials for ladle Read More »