Electric arc furnace sand filling device

Abstract

The invention discloses an electric arc furnace sand filling device. The device comprises a swing cylinder, a support arm, a sand hopper and an opening and closing mechanism, wherein the swing cylinder is arranged on a furnace shell, the driving end of the swing cylinder is connected with the upper end of a swing pin, and the swing pin is connected with a supporting steel plate extending from thefurnace shell; one end of the support arm is fixedly connected with the swing pin, the other end of the support arm is fixed on the outer wall of the sand hopper, the swing cylinder can drive the support arm and the sand hopper to rotate around the center of the swing pin through the swing pin, so that the sand hopper can be freely switched between the work position and the sand filling position;and the sand hopper is internally provided with a sand filling channel, and the lower end of the sand filling channel is provided with the opening and closing mechanism for controlling opening and closing of the sand filling channel. The sand filling device has the beneficial effects that the sand filling device is flexible and controllable in operation, unmanned operation of the sand filling process can be achieved, and the working efficiency is greatly improved, moreover, the sand filling device can avoid high-risk operation of workers under severe conditions, the labor cost is saved, and safety and reliability are achieved.

Description

technical field [0001] The invention relates to the field of electric arc furnace steelmaking, in particular to an electric arc furnace sand filling device. Background technique [0002] EAF slag-free tapping technology has been widely used. Common forms mainly include siphon tapping method, central bottom tapping and eccentric bottom tapping, etc. Among them, eccentric bottom tapping is to make the smelted molten steel flow out through the tapping hole at the furnace bottom deviated from the center of the furnace bottom, and flow into the bottom of the electric arc furnace. When the steel is tapped, the furnace body needs to be tilted at a certain angle. After the steel tapping is completed, the tapping port needs to be blocked for the next smelting. When plugging the tapping hole, first use the eccentric bottom tapping device to block the tapping hole, and then add 2-5mm magnesia (including other components) through the sand filling device arranged above the eccentric bot...

AI Technical Summary

Problems solved by technology

[0003] In the above process, the on-site loading of magnesia has been manually operated for a long time, and there are problems such as high temperature in the working environment, strong heat radiation, heavy dust and noise pollution, and high labor intensity.

Images