SR Smelting Furnace

Submerged arc furnaces are primarily used to smelt ferroalloys and produce high-carbon ferrochrome, including ferrochrome, also known as ferrochrome furnaces. Ferrochrome, an alloy of chromium and iron, is a key raw material in steel production. Chromium is the primary element in the carbide-forming reaction within the furnace. The reduction reaction of iron and carbon synergizes with the chromium reduction reaction, forming complex carbides that lower the alloy's melting point and promote the reduction reaction. Therefore, chromium in the charge is the raw material for the smelting process, while ferrochrome is the final product. Ferrochrome Furnaces - The Difference Between Charge Chrome and Ferrochrome Chromium in SAF charge refers to "submerged arc furnace chromium ore" or its refined chromium products, while ferrochrome is "the product of the high-temperature reduction of chromium ore and iron ore." It is primarily composed of chromium and iron, and may al...

Maintenance of an electric arc furnace is crucial to ensure its performance and longevity. This includes daily and periodic inspections, ensuring safe and efficient operation and extending the lifespan of the equipment. In addition, when selecting an electric arc furnaces, consider its structure, manufacturing requirements, performance level, cooling mode, and ease of maintenance. Electric Arc Furnace Daily Maintenance Daily Maintenance of the Furnace Cover Regularly blow away accumulated dust from the furnace cover to maintain heat dissipation. Strictly follow the power curve to avoid damaging the furnace cover. Generally, a reactor is added during power supply and removed after 30 minutes. During the reduction period, after carbide slag or white slag forms, low voltage is used. After loading a top-loading smelting furnace, if the charge is too high and it is estimated that the furnace body cannot be opened, the charge must be leveled to prevent it from colliding with the furnace cov...

  During ladle refining, deoxidizers are added to remove oxygen. Common deoxidizers include aluminum and silicon, aluminum, barium, and calcium. For example, 2.6 kg of aluminum and 2.0 kg of silicon, aluminum, barium, and calcium may be added per ton of steel. These deoxidizers react with oxygen in the molten steel in the ladle refining furnace, forming oxides that are removed from the molten steel, thereby achieving the desired deoxidation. In addition, bottom-blown argon agitation also helps remove impurities from the molten steel. Refining Furnace - Deoxidation in Ladle Refining During LRF ladle refining, deoxidation is typically achieved by adding aluminum (Al) or composite deoxidizers. These deoxidizers react with oxygen in the molten steel in the ladle furnace to form solid oxides, thereby reducing the oxygen content of the molten steel. Common Deoxidizing Elements/Deoxidizers: Aluminum (Al): This is a very effective deoxidizer. It reacts with oxygen in the molten steel to f...

The electric arc furnace for steelmaking uses an electric arc discharge to generate high temperatures to melt metal. Electric energy is fed into the furnace via graphite electrodes, with the arc acting as the heat source. The EAF can adjust the furnace atmosphere, making it particularly suitable for melting steel containing easily oxidizable elements. Developed by French engineer Paul Heroux between 1888 and 1892, this technology has been widely used in industrial steelmaking. Electric arc furnaces, which use electricity as their heat source and can be flexibly controlled, play a vital role in modern steelmaking. Let's explore their applications. Applications of Electric Arc Furnace for Steelmaking Production of Various Steels: EAFs can produce various types of steel, including carbon steel, alloy steel, and stainless steel. Smelting Special Steels: Electric arc furnaces are particularly suitable for smelting special steels with high composition and quality requirements, such as hi...

  Differences and smelting characteristics between low carbon / high carbon ferrochrome making furnace. Low-carbon and high-carbon ferrochrome are produced using different smelting methods. These two types of ferrochrome have different carbon contents and are used in different applications in the steelmaking industry. Low-carbon ferrochrome is primarily used to produce low-carbon steels such as stainless steel, while high-carbon ferrochrome is more commonly used to produce high-carbon steels, tool steel, and other products. Low Carbon Ferrochrome Definition: Low-carbon ferrochrome refers to ferrochrome with a carbon content between 0.15% and 0.50%. Applications: Primarily used in the production of low-carbon steel grades such as stainless steel and acid-resistant steel, as well as other specialty steels requiring a low carbon content. Production Process: The production of low carbon ferrochrome generally requires a more complex smelting process and is relatively expensive. High ca...

  Electric arc furnace melt metals by harnessing the high temperatures of an electric arc. Their operating principle is to generate an arc between electrodes and the material to be melted, creating high temperatures that melt the metal. Electric arc furnaces are devices that convert electrical energy into heat and are widely used in the steel industry and other metallurgical fields. Electric Arc Furnace Operating Principles 1. Arc Generation: An EAF contains two or more electrodes. When current passes through these electrodes and creates a gap between the electrodes and the charge, an arc is generated. 2. High-Temperature Heating: The arc discharge generates extremely high temperatures, typically exceeding 3000°C, sufficient to melt a variety of metals. 3. Melting Metal: Molten metal and slag settle at the bottom of the furnace, while the top is used for charging and adjusting the electrode position. 4. Control & Refining: The temperature and melting process within the furnace ...