Desulfurization stirring head

Abstract

The invention discloses a desulfurization stirring head. The desulfurization stirring head comprises a main body and double layers of stirring paddles arranged on the peripheral surface of the main body, wherein a blowing pipe penetrates through the main body, and a desulfurizing agent inlet and a desulfurizing agent outlet are formed in two ends of the blowing pipe respectively. According to the desulfurization stirring head, a desulfurizing agent is sprayed into molten iron through the blowing pipe in the stirring head, the advantages of mechanical stirring desulfurization and blowing desulfurization are comprehensively utilized, the desulfurization efficiency is guaranteed, dust is reduced, and the field working environment is improved; and due to the design of the double layers of stirring paddles, vortex type turbulence can be formed in the molten iron, large bubbles are effectively avoided, the floating stroke and time of the desulfurizing agent are prolonged, and the dynamic performance of molten iron desulfurization and the utilization rate of the desulfurizing agent are improved. Therefore, according to the desulfurization stirring head, the desulfurization efficiency and the utilization rate of the desulfurizing agent can be improved, the desulfurization environment is improved, and the problems in the field at the present stage are solved.

Description

technical field [0001] The invention relates to the technical field of metallurgical desulfurization, and more specifically relates to a desulfurization stirring head. Background technique [0002] At present, the commonly used hot metal desulfurization methods mainly include the KR method and the injection method. [0003] Among them, the KR method uses mechanical stirring to desulfurize the molten iron. When the molten iron is desulfurized in the ladle, the desulfurizer is added to the surface of the ladle, and the desulfurizer and the molten iron are fully mixed and reacted through the stirring head. The kinetic conditions of this method are good. The desulfurization effect is good, and deep desulfurization can be realized; however, since the desulfurizer is added from the surface of the molten iron, the high-temperature gas on the surface of the molten iron will diffuse and float up the part of the desulfurizer at the same time as the desulfurizer is added, resulting in ...

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Problems solved by technology

[0003] Among them, the KR method uses mechanical stirring to desulfurize the molten iron. When the molten iron is desulfurized in the ladle, the desulfurizer is added to the surface of the ladle, and the desulfurizer and the molten iron are fully mixed and reacted through the stirring head. The kinetic conditions of this method are good. The desulfurization effect is good, and deep desulfurization can be realized; however, since the desulfurizer is added from the surface of the molten iron, the high-temperature gas on the surface of the molten iron will diffuse and float up the part of the desulfurizer at the same time as the desulfurizer is added, resulting in the generation of a large amount of dust, which in turn affects the work of the desulfurization workshop The service life of the environment and equipment; and the desulfurizer is easy to agglomerate, which increases the amount of desulfurizer; in order to quickly spin the desulfurizer into the molten iron, a high-power high-speed stirring device must be used, thereby increasing energy consumption

[0004] The injection method is to use a desulfurization gun to spray the desulfurizer into the molten iron through the carrier gas. The desulfurizer is easily sprayed into the molten iron, and it is not easy to form agglomerates; however, the dynamic conditions of this method are poor. In order to fully mix the desulfurizer with the molten iron, a large air pressure and gas volume are required, and large bubbles are generated at the same time. Explosion and splashing; and the desulfurization agent in the bubbles fails to mix and react with molten iron, resulting in waste of desulfurization agent, long desulfurization time, and desulfurization rate is about 1 / 4 of the desulfurization rate of KR method

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