System for a non-invasive online discrete measurement of phase levels in converters or pyrometallurgical furnaces

摘要

A non-invasive online system for discrete measurements of phase levels in a converter or pyrometallurgical furnace in smelting and conversion processes, consisting in a electrical signal generator, transducers that convert said electrical signals in mechanical waves placed on the outer end of air blowing tuyeres, coupling means between said system and the shell of the converter, means for air blowing tuyeres placed forming a 180° angle in the direction of the entrance of the airflow, a transducer placed transversally to said air blowing tuyere, placed in the direction of the cross axis or longitudinal axis of the phases plane and facing at least one of the limiting zones between the different phases present inside the converter, so as to apply mechanical waves that travel in a transversal direction with the air flow into the converter, mechanical waves sensors placed around the external wall of the shell of the converter in charge of receiving the reflected signal, means for the preamplification of the signal, an analogous/digital interface, a means for data acquisition, a means for processing the signals so as to determine the amplitude of the reflected signal which has a characteristic and different level for each phase and correlate the amplitude so as to determine the limiting zone between the different phases that face at least one transducer, a memory means to store the discrete values of the phase levels and a visualisation means for displaying the discrete values of the phase levels.