Electric arc furnace and furnace cover thereof

Abstract

The invention relates to an electric arc furnace and a furnace cover thereof. The furnace cover comprises a fixed cover body and a movable cover body, wherein the movable cover body is provided with at least one electrode penetrating an installation position, and the fixed cover body is provided with an electrode rotation driving mechanism for driving the movable cover body to rotate around the axis of the movable cover body. According to the electric arc furnace and the furnace cover thereof, the furnace cover is decomposed into the fixed cover body and the movable cover body, and the movablecover body can rotate relative to the fixed cover body, so that the movable cover body can drive the electrodes to rotate together, the temperature distribution of a furnace hearth in the electric arc furnace can be effectively improved, the temperature in the furnace is more uniform, the smelting effect of the electric arc furnace is improved, and the energy consumption is saved; based on the furnace cover with the split structure, due to the fact that the movable cover body rotates, the movable cover body is easy to drive, the energy consumption is low, and the rotation stability and precision are easy to control; and in addition, rotary driving equipment can be arranged on the fixed cover body and does not need to occupy extra space, so that the device arrangement structure is compact.

Description

technical field [0001] The invention belongs to the technical field of metallurgical equipment, and in particular relates to a furnace cover of an electric arc furnace and an electric arc furnace including the furnace cover. Background technique [0002] An electric arc furnace is an electric furnace that smelts ores and metals at high temperatures generated by electrode arcs. When the gas discharge forms an arc, the energy is very concentrated, and the arc temperature is above 3000°C. For smelting metals, the electric arc furnace is more flexible than other steelmaking furnaces. It can effectively remove impurities such as sulfur and phosphorus. The furnace temperature is easy to control and the equipment occupies a small area. It is suitable for smelting high-quality alloy steel. [0003] Electric arc furnaces can be divided into three-phase electric arc furnaces, consumable electric arc furnaces, single-phase electric arc furnaces and resistance electric arc furnaces, et...

AI Technical Summary

Problems solved by technology

Such electrode arrangement and arc characteristics will inevitably cause heating and cold areas in the area far away from the electrodes between each two electrodes, resulting in uneven temperature distribution in the furnace. This is an inherent weakness of electric arc furnace production for a long time. In actual production, through Arrange burners on the furnace wall corresponding to the cold zone, and use natural gas and other energy sources to heat to compensate the temperature in the cold zone. This will not only increase new equipment and arrange water cooling, but also greatly increase energy consumption, especially in the later stage of scrap steel melting. In the cold zone, the melting of scrap steel by natural gas combustion is slow, resulting in prolonged smelting time, not only increased power consumption, but also increased electrode loss, reduced resource utilization, and decreased productivity.

Images