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Experience in handling cracks and steel leakage in ladle nozzle seat bricks

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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 …

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

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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 …

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Analysis of Theoretical Argon Purging Flow Rate for the Long Nozzle in the Continuous Casting Process

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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 …

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Current Status of Research on Reuse Technology of Magnesia-Carbon Bricks

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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 …

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Gain an In-depth Understanding of Furnace Bottom Porous Plugs

Refractory News, Uncategorized / By

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 …

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Analysis of the causes of steel piercing at the tapping spout of a 200t converter

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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. …

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Types, consumption, and technical improvements of refractories used in steelmaking plants

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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 …

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What are the effects of the main raw materials in aluminum-magnesium-carbon bricks and magnesium-carbon bricks on their performance?

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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 …

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A Study on the Alkali Resistance of Six Different Types of Refractory Materials and Recommendations for Refractory Selection in Alkali-Containing Environments

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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 …

A Study on the Alkali Resistance of Six Different Types of Refractory Materials and Recommendations for Refractory Selection in Alkali-Containing Environments Read More »

How to select refractory castables

Refractory News / By

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 …

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