NOUFERROUS METALLURGICAL EQUIPMENT

An automatic protection device for preventing overtemperature at the inlet of ESPs is introduced. The device can effectively control the inlet temperature of ESPs. The associated spray cooling device humidifies smelting off-gas while reducing the EPS inlet temperature, thus effectively adjusting the specific resistance of the dust and the content of sulfur trioxide in the off-gas, and solving the problems caused by the output increase of smelting system, such as overtemperature at the ESP inlet, deformation of anode plate, decline of duct collection efficiency, equipment corrosion, etc.