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In metallurgy, a ladle is a barrel or vessel used for transporting and pouring molten metal. Ladles are commonly used in foundries and range in size from small hand-held containers similar to kitchen ladles, which can hold 20 kg (44 lbs), to large steel mill ladles, which can hold up to 300 tons (29
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Secondary refining refers to the refining outside the traditional steelmaking furnace (such as open hearth furnace, refining furnace and electric furnace). The main tasks of refining are deoxidation, desulfurization, dephosphorization, decarburization, inclusion removal, alloying and fine adjustment of composition. Statistics on the world crude steel output show that the world crude steel output has continued to grow in ups and downs in the past 30 years.
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Liquid steel is heated by electric arc to obtain new heat energy, which can not only add alloy and adjust composition during ladle refining, but also add slag, which is convenient for deep desulfurization and deoxidation of liquid steel. What’s more, the start pouring temperature of liquid steel required by continuous casting is guaranteed, which is conducive to the improvement of dry slab quality.
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The influence of direct reduced iron (DRI) on electric arc furnace steelmaking1. Productivity and yield Production practice shows that adding DRI has a great impact on the productivity and yield of the electric arc furnace. In recent years, the number of large electric arc furnace plants newly built
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The existing furnace covers of steel-making electric furnaces mostly adopt the structure of masonry refractory bricks. The disadvantages of the furnace covers of this structure are many brick cracks, poor overall performance, high energy consumption, short service life, and long maintenance.
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