Analysis of the electrical characteristics influence of the current supply on the technical and economic indicators of the melting of ferrosilicochrome

Abstract

This article presents the results of a research of the influence of the electrical characteristics of the current lead on the technical and economic indicators of ferrosilicochromium smelting. The parameters of the operation of the furnace No.43 of the Aksu Ferroalloy Plant in connection with the change in the characteristics of the current lead during the modernization of the EPU are considered. According to the experimental results of calculations, the power Ru, the composition of the metal and slag from the production of ferrosilicochromium are have great importance, almost with a rare use of the electrical resistance of the solid charge and the electrical resistivity of the slag, regardless of the readings of the sensors and the electrical parameters of the current supply. When using computational computer-computer programs (CRP), eleven modes of network operation are used. In this paper, mode 10 is closest to the production mode. According to mode 10, the electrical parameters of the current supply have been improved. According to the conditions of experimental calculations, the power Ру, the compositions of the metal and slag of ferrosilicochromium production remain constant. Modernization of a short network and an increase in the deepening of electrodes into the charge led to a decrease in Rу to 0.945÷0.958 mΩ and secondary voltage Uл to 155 V, to a decrease in the SiC content in the slag to 15.1 and a decrease in flyoff SiО2 to 67.0÷68.6 kg/t. The deepening of the electrodes with their reduced fit increased the furnace productivity to 79.8 t, and the specific power consumption decreased by 870 kW/h·t.