The Common Refractory Materials for Iron Ladle Applications

Industry newsLeave a comment

Reliable refractory materials play a vital role in extending the life of the iron ladle and improving operational efficiency. Our experienced team specializes in designing and customizing a complete range of iron ladle refractories to meet the specific conditions at your site. The Common Refractory Materials for Iron Ladle: 1. Al2O3-SiC-C bricks: Al₂O₃-SiC-C Brick (aluminum silicon carbide carbon brick) is made of high quality materials such as corundum, graphite, scaled graphite and silicon carbide through advanced technology. It is known for its excellent resistance to slag erosion, outstanding thermal shock resistance and long service life, making it ideal for iron ladle applications. 2. Al2O3-SiC Castable: Al2O3-SiC Castable has impressive properties based on sintered or electrofused corundum as aggregate, sintered or electrofused corundum powder and silicon carbide powder as matrix with various additives. Its high resistance to slag corrosion, erosion and excellent thermal shock stability make it a reliable choice for iron ladle applications. Conclusion In conclusion, refractory materials such as Al2O3-SiC-C bricks and Al2O3-SiC castable produced using advanced technology and high quality components, can significantly improve the performance and service life of iron ladles. We are committed to customizing our refractory solutions to steel plants’ site-specific conditions to ensure that they are perfectly matched to your operational requirements, thereby improving the overall efficiency of the steel production process.

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

Industry newsLeave a comment

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.

BOF Refractories

3 Main Refractory Materials and Solutions for Steelmaking Converters

Industry newsLeave a comment

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.

A Comprehensive Guide to Ladle Refractories: Top 5 Types and Characteristics

Industry newsLeave a comment

In the steelmaking process of the iron and steel industry, ladle refractories play a vital role. They not only provide good furnace lining for high temperature smelting, but also protect the furnace body and improve smelting efficiency. In this article, we will introduce the types, characteristics, functions and application scenarios of ladle refractories in detail. Types Characteristics of Ladle Refractory Materials There are various types of refractory materials used in ladles, each designed to serve specific purposes. Here are some of the most common types: AL₂O₃-MGO-C brick AL₂O₃-MGO-C brick is made of calcined magnesia, calcined corundum, and large flake graphite as the main raw materials, with resin as the binder. This type of brick has the advantages of resistance to slag erosion, corrosion resistance, and wear resistance, and is mainly used for the walls and bottom of steel ladles. MGO-C BRICK FOR LADLE MGO-C brick for ladle is made of high quality magnesium oxide and flake graphite by pressing. It has excellent slag and molten steel erosion resistance, volume stability and good thermal shock stability, and is suitable for the smelting of ordinary carbon and high carbon steels. SLIDE GATE The slide gate has low impurity and maintains stable quality. Its good performance in terms of strength, erosion resistance, and thermal shock resistance enables the slide gates to cast multiple ladles of molten steel. UPPER NOZZLE & LOWER NOZZLE The upper nozzle and lower nozzle of the ladle supplied by our company are made of corundum and spinel as the main raw materials, with phenolic resin serving as the binder. The product exhibits excellent thermal shock stability, high-temperature strength, and strong resistance to steel erosion. PURGING PLUG & WELL BLOCK The purging plug and well block are made of chrome corundum and other materials, and they are installed at the bottom of the ladle, serving as important functional components. They feature a stable structure, a wide range of air permeability, easy adjustment of gas flow, a high blowing rate, resistance to scouring and erosion, and a long service life. Roles of Ladle Refractory Materials： Ladle refractory materials serve several critical functions in the steelmaking process: Protecting the steel ladle lining: During the steelmaking process, the lining of the steel ladle is subject to erosion from the high-temperature furnace slag and molten steel. Using refractory materials for steel ladles can effectively protect the lining from damage, improving the service life of the steel ladle. Enhancing resistance to furnace slag erosion: In a converter or electric arc furnace, the high-temperature slag erosion of the steel ladle is inevitable. Using refractory materials for steel ladles can enhance resistance to slag erosion and reduce damage to the lining of the steel ladle. Improving the quality of molten steel: Refractory materials for steel ladles have a lower杂质 content and better thermal stability, which can reduce the content of impurities in molten steel and improve its purity and quality. Reducing energy consumption: By using refractory materials for steel ladles, it can reduce fluctuations in the temperature of molten steel during the steelmaking process, lower energy consumption, and improve steelmaking efficiency. In conclusion With the continuous progress and development of the steel industry, the demand for high efficiency, energy saving and environmental protection is increasing. With its continuous innovation spirit and strong R&D strength, ZTM Refractory Materials will continue to lead technological innovation in the field of ladle refractories to meet the ever-increasing demands of the industry.

Exploring 6 Electric Arc Furnace Refractory Materials

Industry newsLeave a comment

It is of importance to select and use the proper electric arc furnace refractory materials within the steelmaking industry. The primary purpose of these refractories is to safeguard the furnace lining, enhance heating efficiency, ensure steel quality, and prolong the furnace’s service life. Given the necessity to withstand a range of formidable challenges, such as high temperatures, slag erosion, physical impact, and chemical erosion, the selection of the right refractories plays a vital role in the steelmaking process. This article will deliver a comprehensive analysis of some of the leading electric arc furnace refractories used in steelmaking, outlining their properties and functions to provide you with a better understanding of these crucial aspects. What Are Electric Arc Furnace Refractory Materials? The steelmaking electric arc furnace system mainly utilizes a wide array of refractory materials, including magnesia-carbon bricks, EBT bricks, hot repair mass, cold ramming mass, gunning, sand filling at the taphole, and more. Characteristics and Roles of Electric Arc Furnace Refractories Magnesium-carbon Brick The working layer bricks for steelmaking electric arc furnaces——magnesia carbon bricks, primarily use large crystalline high-purity fused magnesia and pure flake graphite as their main materials. During the manufacturing process, these materials are mixed with resin and added with composite antioxidants, and are shaped using advanced high-pressure molding technology. The MgO-C bricks we offer exhibit outstanding characteristics, such as low porosity, high-temperature strength, corrosion resistance, and resistance to spalling. To meet customers’ individual requirements, we provide various models of magnesia carbon bricks designed for different smelting conditions, including the slag line, hot spots, and the tap hole. Tap Hole Brick EBT bricks are made of high-quality fused magnesia and highly pure flake graphite. The manufacturing process includes high-pressure pressing and isostatic pressing. This brick has excellent characteristics such as low porosity, good corrosion resistance, oxidation resistance and long service life. Hot Repair Mass Hot repair mass play a significant role in the steelmaking process in an electric arc furnace. When there is a need to replace the taphole, these materials can fill the gap between the bricks and the bottom of the electric arc furnace. Additionally, in the case of local depressions or cracks on the furnace’s bottom, hot repair materials can assist in minor repairs. This repair material is a blend of high-quality iron, calcium, magnesium components, and a unique organic binder. Our hot repair materials series exhibits excellent high-temperature and corrosion resistance, thereby providing your electric arc furnace with durable and reliable protection. Cold Ramming Mass The cold ramming mass for the electric furnace bottom is manufactured through cold pressing and is composed of high-purity magnesium oxide, high-quality magnesium calcium iron composite materials, and additives. It possesses several key characteristics, including a simple structure, excellent sintering performance, strong integrity, high resistance to molten steel permeation, corrosion resistance, absence of floatation, and a long service life. Gunning The Gunning for electric arc furnace steelmaking is specifically designed for the steelmaking process in electric arc furnaces. It is primarily composed of fused magnesia and composite binding agents. This spray material exhibits numerous excellent characteristics, including strong adhesion, low rebound rate, ease of sintering, corrosion resistance, and wear resistance. Tap hole filling mass The sand filling at the taphole for electric arc furnaces is a high-quality refractory material designed specifically for the steelmaking process in electric arc furnaces. It features a unique formula, primarily composed of various proportions of high-quality magnesia, olivine, quartz materials, and suitable additives. This sand filling material offers numerous advantages, including ease of construction, excellent sintering performance, strong slag resistance, absence of floatation, and safety in usage. Conclusion The above is a detailed introduction to the electric arc furnace refractory materials. In addition to supplying refractory materials for the electric furnace, ZTM company also has a comprehensive overall contracting ability for refractory materials in the electric furnace system, providing a full range of solutions from lining structure design to product production, supply, construction, maintenance, dismantling, and new product research and development. With our professional technical team and rich industry experience, we provide one-stop service to ensure that your electric furnace system operates safely, stably, and efficiently. If you have any questions or needs regarding refractory materials for the electric furnace, please feel free to contact us. We will serve you wholeheartedly and look forward to cooperating with you! We will jointly discuss the selection, application, and optimization of refractory materials, providing customized solutions for your electric furnace system.

Yangquan’s Calcined Bauxite Demand Shows Slight Increase

Industry newsLeave a comment

In April, the price of calcined bauxite at Yangquan held steady, although the high-grade stuff was still quite expensive. However, most producers say that demand is starting to pick up a bit and production rates are slowly creeping up. However, despite all this, the supply of high-grade bauxite is still struggling to keep up with demand. In addition, the high cost of natural gas and a shortage of coke oven gas make it difficult for the region to compete on raw materials. Now, with falling profits in the steel industry putting pressure on refractory prices and strong cost support keeping prices up, there’s a lot of pressure on the price of calcined bauxite to go up or down in the short term. But it’s looking like the price of calcined bauxite will remain stable for a while.