OPERATION CONTROL METHOD FOR ELECTRIC MELTING FURNACE

摘要

PROBLEM TO BE SOLVED: To provide an operation control method for an electric melting furnace, suppressing the generation of a side current with the accumulation of deposits and permitting smooth operation while easily removing the deposits when accumulated. SOLUTION: The operation control method is provided for the electric melting furnace 10 which has a main electrode 14 inserted into a furnace body 11 with the existence of a gap thereto and a furnace bottom electrode 15 arranged in opposition thereto for giving melting treatment to melted objects with the application of voltage between the electrodes. The melting furnace 10 has an ammeter 22 for detecting the side current generated with deposits precipitated on a furnace wall as volatilized materials suspended in the furnace are cooled. When the side current is detected, a furnace temperature is kept in a temperature region higher than in normal operation until reaching a preset threshold value. COPYRIGHT: (C)2005,JPO&NCIPI