The depleted electric furnace is mainly composed of metal components and refractory materials. The melt temperature in the furnace is up to 1300°C, and the melt contains sulfides and the flue gas contains corrosive gases, which have a strong erosion on the furnace. These factors directly affect the life of the furnace. In particular, near the slag line, slag intake, copper craters, and slag discharge ports are more severely corroded. These parts are mainly due to the erosion of the slag discharged from the flash furnace to the top of the depleted electric furnace, and also due to the melt flow of the melt in the depleted electric furnace furnace under the action of the current, the mechanical wear of the brick and the intrusion of sulphide into the refractory material. Corrosion bricks. The cooling method such as depleted electric furnace is the same as other furnaces. The best way is to use water jacket cooling. The design, construction, processing and maintenance of the water jacket is very important. Must fully recognize the common points and differences with other cooling devices. In order to ensure the safe and reliable operation of the cooling device, necessary measures and structural forms are formulated. This roof can be made in advance, pre-baked, and the installation speed is fast, shortening the inspection time. For the original furnace in the form of a vault, the application of a low-stress preformed vault top allows the furnace body to be applied without any modification, and is therefore easy to apply. As the top life of the furnace is increased, the maintenance time is shortened, and the production rate is improved, resulting in significant economic benefits. When designing the cooling element, the following factors must be considered: (1) The setting of the cooling device shall be determined according to the erosion condition of the refractory material in the furnace. (2) Determine the structure of the cooling device based on the success of the cooling area. (3) Strictly control the outlet temperature of the cooling water and prevent fouling of the pipeline. (4) The cooling device must be reliable and stable. It not only has good corrosion resistance, but also has good thermal conductivity and does not leak.
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