Mathematical modelling of the process of melting alloys of the Si-Cr-Ni-Fe system in the iron-carbon melt

The process of melting of the Si-Cr-Ni-Fe ferroalloys in the iron-carbon melt under static conditions was studied using the method of mathematical modelling. It was found that the melting process takes place in three stages. The effect of silicon concentration and the initial size of a piece of alloy on the duration of each stage of alloy melting is revealed. It was shown that an increase in the silicon content from 6 to 40 % in the complex ferroalloy of the 50 mm fraction containing ∼ 27 % Cr and ∼ 12 % Ni leads to a decrease in the total melting time of the alloys from 67 to 30 seconds at the iron-carbon melt temperature of 1600 °C. © Published under licence by IOP Publishing Ltd

Study of the Effect of Phosphorus Oxide on the Physicochemical Characteristics of Niobium Concentrates

In the paper, physicochemical characteristics of niobium-containing concentrate with high content P2O5 in its were determinate. Their beginning, end softening temperatures and temperature range were experimentally estimated. Also, the density of concentrates defind by the picnometric method.Исследование выполнено за счет гранта Российского научного фонда № 21-19-00252, https://rscf.ru/project/21-19-00252/

STUDY OF THE PHYSICOCHEMICAL CHARACTERISTICS OF COMPLEX BORON-CONTAINING FERROALLOYS

The paper presents the results of studies of the physicochemical characteristics of boron-containing ferroalloys. Their density and melting points were experimentally estimated. The melting time of ferroalloys is calculated and a recommendation is given for the size of a piece for alloying steel.Работа выполнена по госзаданию ИМЕТ УРО РАН