APPARATUS AND METHOD FOR DETECTING LADLE SLAG

摘要

PURPOSE: An apparatus and a method for detecting ladle slag are provided to prevent damage of a slag detecting sensor, effectively control the slag detecting sensor and reduce maintenance costs thereof by installing the slag detecting sensor at the outer part of the ladle. CONSTITUTION: In an apparatus for detecting slag in molten steel flown out into a Tundish from a ladle, the ladle slag detecting apparatus comprises a detecting sensor (20) which is closely adhered to one side of the upper part of a long nozzle part (11) and the lower part of a fork arm ring (12), and comprises a transmission coil, a receiving coil, a sensor housing carrying the transmission and receiving coils, and an outer housing surrounding the sensor housing; and a slag detecting circuit connected to the transmission and receiving coils of the detecting sensor (20) through a signal wire. In a method for detecting ladle slag using the ladle slag detecting apparatus, the ladle slag detecting method comprises the processes of closely adhering a detecting sensor (20) to which a slag detecting circuit is connected through a signal wire to one side of the upper part of a long nozzle part (11) and the lower part of a fork arm ring (12); and detecting ladle slag by impressing an alternating current to a transmission coil installed at one side of the long nozzle part (11) so as to form a magnetic field, and measuring change of output voltage guided to a receiving coil by the magnetic field formed at the long nozzle part (11) according to properties of a material passing through the long nozzle part (11).