Swing electric arc furnace door

Abstract

The invention provides a swing electric arc furnace door which is rotationally mounted on an electric arc furnace. The swing electric arc furnace door comprises a body and a drive device. An oxygen lance is arranged on the body in a penetrating mode. The drive device at least comprises a rotary shaft rotationally connected to the electric arc furnace, and a drive component connected with the rotary shaft. The body is connected with the rotary shaft. The drive component can drive the rotary shaft to rotate around the axis of the rotary shaft. Rotation of the rotary shaft can drive the body to rotate around the axis of the rotary shaft. According to the swing electric arc furnace door provided by the invention, by arranging the oxygen lance on the body in the penetrating mode, oxygen blasting operation in the furnace door position can also be achieved under the closed state of the electric arc furnace door, the production efficiency of the electric arc furnace is improved, and the problems that a large amount of cold air enters the electric arc furnace, and local cold areas emerge are solved; and since the drive device drives the body to rotate, the swing electric arc furnace door isopened by a certain angle, or is completely opened or is completely closed, operation is easy and convenient, and time and labor are saved.

Description

technical field [0001] The invention relates to the technical field of electric arc furnace steelmaking, in particular to a swing-type electric arc furnace door. Background technique [0002] At present, the electric arc furnaces of domestic iron and steel enterprises are generally equipped with multifunctional oxygen lances on the furnace wall to realize the rapid input of auxiliary energy into the electric arc furnace and generate a certain stirring force on the electric arc furnace molten pool. [0003] The current electric arc furnace door is a vertical lifting design, which is driven by pneumatic or hydraulic pressure. On the operating platform near the electric arc furnace door, some manufacturers are equipped with an external oxygen lance mechanism. When the oxygen blowing operation needs to be carried out at the position of the furnace door, the furnace door is raised to the open position, and the external oxygen lance can be extended into the furnace for oxygen blo...

AI Technical Summary

Problems solved by technology

As a result, when the oxygen blowing operation is performed at the furnace door position, the furnace door is always open, causing a large amount of cold air to enter the electric arc furnace, reducing the temperature in the furnace, and finally leading to an increase in the electric arc furnace smelting power consumption

In addition, when the electric arc furnace is smelted with scrap steel, the furnace door will be blocked after the scrap steel is added into the electric arc furnace, and the external oxygen lance cannot enter the electric arc furnace to participate in blowing, thereby reducing the input of auxiliary energy Creates a relatively cold zone, leaving unmelted scrap near the furnace door

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