Detection for Position of Electrode Tip of Submerged Arc Furnaces with the Differential Magnetic Field Radiation

The depth of electrodes inserted into the charge plays a vital role in controlling the submerged arc furnace. Therefore, we used ultrasound waves reflected from the electrode tip to estimate the depth of electrodes inserted into the charge. However, graphite’s ultrasonic velocity and transmission loss are the basis for establishing an ultrasonic measurement system. Thus, we expected to improve our understanding of them through numerical simulations and experimental measurements. First, we proposed an ultrasonic detection method to estimate the electrode length by embedding graphite rods in Söderberg electrodes. Then, we developed a 3D finite element model in COMSOL for wave transmission in the graphite rod. The wave transmission through 20 and 40 cm graphite rods was simulated using finite element models. The transmission loss, sound pressure, intensity, and displacement distribution of the sound wave passing through the graphite electrode were calculated. To verify the simulation calculation results, we further conducted an acoustic experiment. The results showed that transmission loss varies significantly with frequency. When the frequency was between 25 and 55 kHz, the transmission loss of the graphite rod was slight. At 47 kHz, the transmission loss was 1.837 dB/m.

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Detection for Position of Electrode Tip of Submerged Arc Furnaces with the Differential Magnetic Field Radiation

Cited by 3 publications

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Design of an Online Detection System for High-Power Submerged Arc Furnace with Magnetic Field Difference

Design of an Online Detection System for High-Power Submerged Arc Furnace with Magnetic Field Difference

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