Slag Properties in the Primary Production Process of Mn-Ferroalloys

Abstract

The thermodynamic and kinetic properties of the carbothermic reduction of MnO in the five-component slag, MnO-SiO2-CaO-MgO-Al2O3, is critical in the production process of Mn-ferroalloys. While the reduction rate is mainly dependent on the presence of a solid MnO phase in the slag for Mn-Fe-alloys, the rate for the Mn-Si-Fe alloys has two distinct steps, a slow step followed by a fast step. The extent of the slow step has been shown to be dependent on the S content in the slag. The thermo-physical properties of viscosity, density, interfacial tension and electrical resistivity is reviewed, and these properties are mainly determined by the total basicity.

The Properties of Normal Concrete with Ground Manganese Slag as Binder Replacement

“…Generally, there are two types of manganese slag, namely ferromanganese slag and silicomanganese slag; that can be produced from the metal smelting process [9] as shown in Figure 1. The differentiation between these two types of manganese slag is through their manganese oxide (MnO) and silica (SiO2) content [10].…”

Modeling the Ferrosilicomanganese Smelting Process Using Manganese-Rich Slag

“…The remaining 30% are difficult-to-enrich oxidized and primary manganese ores. In [5][6][7], the maturing problem of the shortage of high-quality manganese ores was noted, which is still relevant. At the moment, producers of ferroalloys, such as the Karaganda plant of Asia FerroAlloys LLP and the Aksu Ferroalloy Plant of TNK DOI: 10.36547/ams.30.…”