Research of electrophysical properties of charge materials for smelting a complex alloy of aluminosilicomanganese

Abstract

This article presents the effectiveness of the use of a new complex of aluminosilicomanganese ferroalloys as an oxygen-containing agent necessary in the production of steel and special alloys. The aluminum silicomanganese alloy is smelted using manganese ore and high-ash coal. In addition to the low cost of the melt, it provides deep purification of both aluminum, silicon and manganese, as well as low-carbon steels from non-metallic impurities. Aluminum silicomanganese is intended for investigation of electrical resistivity of charge materials for melting. Questions of research of specific electrical resistance of charge materials for the smelting of aluminosilicomanganese, in particular, high-ash coals, are considered. The measurements were carried out in the Tamman laboratory unit on a special combined experimental setup connected via converters. Studies on changes in the electrical conductivity of coal were carried out in the temperature range 25-1500°C at a heating rate of 15 deg/min. The main regularities of the formation of the electrical resistivity of charge materials depending on the temperature are determined. The proposed method of measurement makes it possible to obtain in-depth information about the physicochemical properties of charge materials. High-ash coal "Saryadyr", having a constant specific electrical resistance at high temperatures, can be achieved optimal melting mode