<p>Low-carbon ferromanganese can be produced by the silicothermal method using artificial raw materials—manganese concentrate and phosphorus-free slag. The competitiveness of ferromanganese can be increased by using production waste for its smelting. The article presents the results of a study on producing low-carbon ferromanganese from a mixture of ferrosilicomanganese production dusts containing 25.1–26.5% of Mn, 11.7–18.1% of Si, 1.3–2.0% of Zn, 3.4–4.1% of Pb, and MnC17 grade ferrosilicomanganese (hereinafter MnC17). The studies included thermodynamic modeling of the process using the HSC-6.0 software package based on the principle of minimum Gibbs energy and electric smelting in an arc furnace. It has been established that under equilibrium conditions, the interaction of the dusts with MnC17 in the temperature range of 500–1300 °C results in the formation of manganese silicides (Mn₃Si, MnSi, Mn₅Si₃), as well as Si and Fe₃Si, Fe₅Si₃, FeSi, FeSi₂, and MnC₂. At 1400–1900 °C all the manganese and up to 5% of Si are converted into ferromanganese. In this temperature range, the main process of formation of low-carbon (C &lt; 0.1%) ferromanganese occurs, the grade of which depends on the temperature and the amount of MnC17. The formation of FeMn90C05 grade low-carbon ferromanganese containing 85–87.8% of Mn, &lt; 2% of Si, and &lt; 0.1% of C takes place at 1600–1900 °C in the presence of 35–41% of MnC17. At the electric smelting of the dusts together with MnC17 and lime in an arc furnace, 89% of manganese passes into low-carbon ferromanganese, which contains 77.4% of Mn, 2.5% of Si, and 0.4% of C. In this case, zinc and lead completely (97–98%) pass into the gas phase, forming sublimates containing 40–60% of ΣZnO and PbO, thereby increasing the competitiveness of the dust processing technology.</p> Graphical Abstract <p></p>