ZHONG TANG (DALIAN) MATERIALS CO., LTD

The Uses and Advantages of Magnesium Carbon Bricks in Steel Making Industry

In the realm of iron and steel metallurgy, the choice of construction materials for steelmaking furnaces holds paramount importance. Among these materials, magnesium carbon bricks, renowned for their exceptional refractory properties, have emerged as a popular choice. This blog presents an overview of the characteristics, production process, and the extensive applications of magnesium carbon bricks within the steel smelting industry. 1. Characteristics of Magnesium Carbon Bricks: Magnesium carbon bricks are engineered from premium graphite and high-purity magnesium oxide, crafting high-performance refractory materials known for the following attributes: Lightweight and High Strength: Magnesium carbon bricks boast low density yet impressive strength, facilitating ease of processing and construction. Robust Corrosion Resistance: These bricks can endure corrosive environments, effectively extending the service life of furnace linings. Exceptional Fire Resistance: Thanks to the high melting point of magnesium oxide, these bricks can withstand temperatures exceeding 1500°C. Superior Electrical Conductivity: Magnesium carbon bricks exhibit robust electrical conductivity, capable of resisting arc burn-through, ensuring the stability of the furnace lining. 2. Production Process of Magnesium Carbon Bricks: The production process of magnesium carbon bricks encompasses the following sequential steps: Crushing: Raw materials are initially crushed to facilitate subsequent mixing and molding. Sampling: Quality sampling of the crushed raw materials is performed to ensure compliance with defined requirements. Mixing: The crushed raw materials are blended to create a homogeneous mixture. Inspection: Rigorous inspection of the mix confirms that its composition and properties meet predefined standards. Batching: Based on production schedules and customer specifications, the mixture and auxiliary materials are batched. Inspection: Post-batching inspections are conducted to validate the composition and performance of the products. Molding: The batched products undergo molding and processing to produce magnesium carbon bricks that meet the required specifications. Calcination: The molded magnesium carbon brick products are subjected to high-temperature calcination to complete material densification and optimize performance. Inspection: A final check is conducted on the calcined magnesium carbon brick products to ensure they meet quality and performance criteria. 3. Application of Magnesium Carbon Bricks in Steel Making Industry In steelmaking electric furnaces, the advantage of magnesium carbon bricks lies in their excellent refractory properties and high temperature strength. Due to its high melting point, magnesium carbon bricks can withstand the high temperature environment in the process of high temperature steelmaking, effectively protecting the furnace lining and extending the service life of the furnace. In addition, magnesium carbon brick also has excellent anti-erosion performance, can resist the erosion of impurities in steel, to ensure the quality of steelmaking. In converter applications, magnesium carbon bricks assume a pivotal role as the primary material for converter linings due to their remarkable thermal shock resistance and resistance to slag erosion. They are suitable for all converter types, ranging from large to small converters. In ladle applications, magnesium carbon bricks are favored as ladle lining materials, thanks to their excellent refractoriness and resistance to molten steel erosion. They accommodate various ladle sizes, from large to small. Furthermore, magnesium carbon bricks find extensive use in electric furnace linings and diverse high-temperature equipment applications. In conclusion, magnesium carbon bricks are highly regarded within the realm of iron and steel metallurgy as high-performance refractory materials. Their exceptional performance and versatile applications contribute to the efficiency, stability, and sustainability of iron and steel metallurgical production. With the continuous advancement of science and technology, it is anticipated that the performance and application scope of magnesium carbon bricks will undergo further expansion and enhancement in the future.

3 Main Refractory Materials and Solutions for Steelmaking Converters

Refractory materials are the backbone of efficient steelmaking converters, ensuring their structural and functional stability under extreme conditions. In this article, we will delve into three key refractory materials and the solutions they provide for steelmaking converters. TAPPING HOLE BRICKS Tapping hole bricks for Basic Oxygen Furnace (BOF) are crafted from high-quality fused magnesia and high-purity flake graphite, using high-pressure molding or isostatic pressing. These bricks exhibit low porosity, exceptional high-temperature strength, robust resistance to erosion and scouring, good oxidation resistance, and a long service life. MGO-C BRICKS BOF magnesia carbon bricks are manufactured using large crystalline high-purity fused magnesia and high-purity flake graphite as the primary materials. They are formed under high pressure, utilizing a resin binder and compound antioxidant. These bricks possess low porosity, excellent high-temperature strength, corrosion resistance, and spalling resistance. Customers can choose different brands of magnesia carbon bricks based on smelting conditions, whether it’s for the slag line, impact zone, or trunnion. GUNNING MASS Gunning mass is formulated with high-quality magnesia and magnesia calcium sand as the main ingredients, combined with compound binders. This material boasts strong adhesion, a low rebound rate, easy sintering, and exceptional erosion resistance. It is well-suited for spray repair maintenance of the converter’s trunnion and slag line. ZTM’s Refractory Material Solutions ZTM’s converter R&D team is dedicated to enhancing converter longevity, reducing production costs, and increasing profitability for customers. Our comprehensive refractory material solutions include permanent lining magnesia bricks, working lining magnesia carbon bricks, tap hole bricks, and various gunning materials. We capitalize on our proximity to magnesia mines to ensure the highest quality refractory materials for converters. Moreover, our technical team provides customers with continuous after-sales support, offering professional technical guidance during installation and usage to extend the converter’s service life. Our experienced R&D team can design and customize a complete set of converter refractories tailored to customer site conditions. Simultaneously, our steelmaking technical team offers support in various aspects, such as slag splashing, to enhance BOF refractory performance. With years of rich experience, we are committed to serving customers from around the world. Join us in enhancing your steelmaking converters with top-notch refractory materials and tailored solutions.