During the continuous casting process, air is easily aspirated through joints between nozzles, leading to the secondary oxidation of molten steel. While argon injection through the long nozzle is employed in production to prevent air aspiration, improper control of the argon flow rate can result in casting defects. Air aspiration occurs because the internal pressure …
This article analyzes the hazards and potential utilization value of discarded MgO-C bricks, reviews the research results on the reuse of MgO-C bricks and the performance of recycled refractory materials in recent years at home and abroad, lists the common problems and solutions in the reuse of MgO-C bricks, and looks forward to the future …
Current Status of Research on Reuse Technology of Magnesia-Carbon Bricks Read More »
Discover a critical component that plays a vital role in industrial production: the furnace bottom gas-permeable brick. In various high-temperature furnaces, the gas-permeable brick at the furnace bottom may seem unassuming, yet it acts like a silently dedicated “heart,” infusing the entire production process with a continuous stream of vitality. Let us unveil the mysteries …
Gain an In-depth Understanding of Furnace Bottom Porous Plugs Read More »
The steel plant currently has two 200-ton vanadium extraction converters and two 200-ton steelmaking converters. All four converters use the same construction method and feature integral tapholes with a lifespan ranging from 80 to 120 taphole cycles. Since commissioning, the steelmaking converters have frequently experienced taphole penetration (or leakage) accidents, occurring 5-7 times per year. …
Analysis of the causes of steel piercing at the tapping spout of a 200t converter Read More »
In recent years, the steelmaking plant of Fujian Sangang Minguang Co., Ltd. (hereinafter referred to as Sangang Minguang) and its suppliers have dedicated themselves to enhancing the stability of refractory materials. They have achieved notable results regarding service life, accident rate reduction, and cost efficiency, thereby contributing to the company’s development. Driven by technological upgrades …
Carbon-based refractories are a new type of refractory material developed in the late 1970s. Utilizing the high refractoriness and non-wetting properties of graphite, they significantly improve the high-temperature performance and erosion resistance of refractory materials. They possess excellent thermal shock stability, slag erosion resistance, spalling resistance, and high-temperature creep resistance. Alumina-magnesia-carbon bricks are carbon-based refractories …
Pressurized fluidized bed coal gasification technology is a new generation of large-scale, advanced coal gasification technology that has emerged in recent years alongside the rise of clean coal technology. The high-temperature, high-pressure nature of coal gasification reactions typically requires the installation of a refractory lining inside the gasifier. The gasifier structure is generally divided into …
As the use of refractory castables becomes increasingly widespread, there are indeed certain methods and techniques for selecting the appropriate material type and specifications. Refractory castables are classified as neutral, acidic, or alkaline, and are further distinguished as heavy-duty or lightweight. Heavy-duty refractory castables are generally used for the working layer, while lightweight castables are …
Magnesia-carbon refractories emerged in the 1970s and are now widely used in modern steel metallurgy, such as in the linings of various electric arc furnaces, ladles, and steelmaking refining furnaces (BOF, RH). Magnesia-carbon bricks are alkaline refractory materials made from magnesia and graphite using various binders. Graphite, as a crucial component of magnesia-carbon refractories, has …
Argon blowing typically involves placing one or more permeable bricks at the bottom of a casting ladle or a brick-built ladle. After tapping, argon gas is blown through these permeable bricks, causing agitation of the molten steel. Argon blowing promotes the flotation of emulsified slag droplets and inclusions in the steel, and can partially remove …
Understanding the materials and properties of steel ladle permeable bricks Read More »
