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Help CenterDeoxidized Aluminum Biscuits for Steelmaking in Tianjin Steelmaking and Casting Plants / Deoxidized Aluminum Biscuits for Steelmaking in Steel Plants / Aluminum Biscuits for Smelting as Aluminum Alloy Additives
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In steelmaking production, using aluminum for deoxidation can effectively reduce the oxygen content, minimize the bubbles generated by the carbon-oxygen reaction, and at the same time refine the grain structure of the steel, thereby improving the impact toughness of the steel, reducing the tendency of cold brittleness and aging. Since the specific gravity of aluminum (2.7g/cm) is much lower than that of molten steel (7.6g/cm3) and steel slag (about 3.5g/cm3), and it is extremely easy to oxidize in air and steel slag. Especially when used for deoxidation in converter steelmaking, aluminum floats on the surface of the molten steel, resulting in large burning losses and low recovery rates. Therefore, in actual production, deoxidizers containing aluminum are often used for deoxidation. They have the characteristics of easily penetrating the steel slag layer, having a high melting point of about 1280℃, being difficult to melt in the steel slag layer, and being able to reach the deep layer of the molten steel for melting and deoxidation. When used for the deoxidation and alloying of molten steel, its density is between that of molten steel and steel slag, which can effectively improve the utilization rate of aluminum. In addition to the low carbon content playing a good role in inhibiting the carburization of molten steel, aluminum cakes are easy to store and can be added with a hopper, which not only simplifies the deoxidation and alloying process of molten steel but also reduces the labor intensity of workers.
Zhongshan Tefa Hardware Products Co., Ltd. produces and supplies a large quantity of steelmaking deoxidizing aluminum blocks/aluminum cakes for deoxidation, which can be customized according to size:
1: The content of metallic aluminum can be selected and processed between 95%-96%-97%-98%-99.7%;
2: It melts quickly after being put into the molten steel, and the molten steel is evenly deoxidized under force;
3: It is not easy to float up after sinking into the molten steel, which shortens the deoxidation reaction time and improves the recovery rate of metallic aluminum.
4: It is suitable for ladle refining and molten steel purification of various steels.
Metallic aluminum is a commonly used deoxidizer for molten steel in steelmaking production. Some steel mills directly put 5 - 10 kg aluminum ingots into the ladle for deoxidation. In actual production, due to the large size and slow melting of aluminum ingots, uneven deoxidation causes waste of raw materials and prolongs the refining time.
Adding round aluminum cakes for deoxidation belongs to precipitation deoxidation. During precipitation deoxidation, the aluminum alloy is directly added to the molten steel to remove oxygen from the molten steel. This deoxidation method has a relatively high deoxidation efficiency, short time consumption, and less alloy consumption.
Advantages of round aluminum cakes for deoxidation:
1: The arc-shaped structure improves the sliding performance between deoxidizing blocks, facilitating the smooth feeding of the silo;
2: It melts quickly after being put into the molten steel, and the molten steel is evenly deoxidized under force;
3: It is not easy to float up after sinking into the molten steel, which shortens the deoxidation reaction time and improves the yield of metallic aluminum.
4: It is suitable for the purification of molten steel in ladle refining of various steels.
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