Electric furnace zinc liquid temperature must be controlled in 460 ~ 510 ℃. Low temperature (460 ℃) or less, it is easy to knot the stove, affect the surface quality of zinc products, low recovery efficiency, high slag containing zinc also. High temperature (510 ℃ or higher), liquid zinc corrosion of refractories of the furnace is aggravating, especially within the sensors on weld groove flushing, shorten the service life of the sensor.
Set up in front of the furnace temperature display, ingot casting personnel can monitor to the furnace temperature, low temperature immediately stop feeding and ingot casting operation; Ultra high temperature when timely notify the instrument work for regulating shift or increase the cathode zinc inputs, make the temperature inside the furnace down. In addition to furnace temperature display, in the instrument control room to install a set of automatic temperature recorder, to save the stove temperature data, analyzing the operation and management of the furnace on a regular basis. In addition, the automatic alarm device, meet the temperature too high or too low, the electric bell and light signal will remind relevant workers.
Inductor current changes directly reflect its running situation, measure every hour production requirements, recorded, with exception to emergency measures in a timely manner. Sensors of cooling air temperature should be controlled within a certain range, the general requirements about 35 ~ 60 ℃. When two or more sensors of cooling air temperature exceeds 50 ℃, should be at the same time open two fan. If a sensor of cooling air temperature rises abruptly, is more higher than other sensors, should first check whether the wind valve in the normal position. If normal air valve open, as a sensor failure in the process of repair.
Under the condition of the environment temperature is higher in the summer, axial flow fan with forced ventilation ventilation, try to control the cooling air temperature. For a sensor of high blast temperature, find out and does not belong to failure, a separate supplement air volume.