wanhaorefractory

1.Overview of bottom-blowing gas-permeable bricks Since the 1960s, ladle secondary refining processes have been adopted by steel producers. Industrial practice has demonstrated that effective secondary refining in a ladle is difficult to achieve without proper inert gas treatment. Initially, inert gas stirring was carried out using top-blown argon lances; however, this method proved limited, as …

What kind of bottom-purging porous plug can achieve the best results in producing clean molten steel? Read More »

The selection of refractory materials for medium-frequency furnaces directly impacts operational safety, melting efficiency, and production costs. It requires comprehensive consideration of various factors, such as the melting process, material properties, and operating conditions. The specific selection criteria are as follows: 1.Suitability based on the type and characteristics of the metal being melted Melting environments …

Selection criteria for refractory materials for medium-frequency furnaces Read More »

This article reviews research progress on the primary materials used for porous plugs in refining ladles—specifically corundum-spinel (Al₂O₃-MgO), chrome-corundum, corundum-mullite, magnesia (magnesia-spinel), and oxide-non-oxide composites—and introduces the main types and development status of composite-structure porous plugs. It highlights that composite-structure porous plugs represent the mainstream trend for future development, emphasizing the need to rationally select …

Current status and development of gas-purging plugs for refining ladles Read More »

Cracks continuously developed in the tundish nozzle seat bricks during use, severely impacting the ladle’s lifespan and hindering on-site production. By comparing several domestic tundish nozzle seat brick manufacturers, adjustments were made to the quality of the seat bricks themselves, the construction of the refractory material around the seat bricks, the baking process, temperature drop …

Experience in handling cracks and steel leakage in ladle nozzle seat bricks Read More »

Basic oxygen furnace (BOF) steelmaking is a core process in modern iron and steel production. Refractory materials and lining auxiliaries serve as the primary barrier for the furnace vessel, directly determining furnace service life, production efficiency, operational safety, and overall costs. This article systematically outlines the core performance requirements for refractories, the characteristics of mainstream …

Core Aspects of Converter Steelmaking: Key Technical Requirements for Refractory Materials and Lining Auxiliaries Read More »