Molten steel purifier for continuous casting tundish

Abstract

The invention belongs to the field of functional material facilities for molten steel purification during the molten steel pouring process, and particularly relates to a molten steel purifier for a continuous casting tundish. The molten steel purifier comprises a refractory tank (1), wherein first hole-shaped steel flowing channels (301) and second hole-shaped steel flowing channels (302) are respectively formed in a first side wall slag blocking layer (201) and a second side wall slag blocking layer (202) of the refractory tank (1); refractory purification components (4) are arranged inside the refractory tank (1); the refractory tank (1) adopts a trapezoid structure; and central axes of the first hole-shaped steel flowing channels (301) and the second hole-shaped steel flowing channels (302) are arranged in a staggered manner. The molten steel purifier can replace the functions of a slag blocking weir and a slag blocking dam original in the tundish, fine aluminium oxide in the molten steel can be captured and adsorbed, the blocking of the steel flowing channels is slowed down, and the steel quality is improved.

Description

technical field [0001] The invention belongs to the field of molten steel purification functional material facilities in the molten steel pouring process, and in particular relates to a molten steel purifier for continuous casting tundish. Background technique [0002] The main task of steelmaking production in iron and steel enterprises is to cast molten steel into qualified slabs. When casting continuous casting slabs, molten steel is injected into the tundish in the ladle, and the molten steel in the tundish passes through the slag stop provided in the tundish. The weir, slag retaining dam, and submerged nozzle enter the crystallizer, and then are cooled by the fan-shaped section of the casting machine to form a billet. [0003] At present, most of the domestic and foreign steel mills producing plate products mainly produce IF steel for automobiles. The IF steel is an ultra-low carbon aluminum-killed steel. The deoxidation and alloying of molten steel are completed with a...

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Problems solved by technology

[0003] At present, most of the domestic and foreign steel mills producing plate products mainly produce IF steel for automobiles. The IF steel is an ultra-low carbon aluminum-killed steel. The deoxidation and alloying of molten steel are completed with aluminum, and the deoxidation product is Al2O3, there is a certain amount of fine Al2O3 in the steel, and it cannot be completely floated and discharged. During the continuous casting of molten steel, the fine Al2O3 will stick to the wall of the flow steel channel to form a blockage, and there is still remain in the steel to form inclusions in the steel, deteriorating the quality of molten steel

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