ANALYSIS OF THE STRUCTURAL AND CHEMICAL STATE OF DUPLEX SYSTEM SSILICATES-SILICIDES OF ALKALINE EARTH METALS Message 4. The Mechanism of Refining Blast Furnace Iron With Magnesium and Its Alloys: Procesi Littâ, 2023, Vol 4 (154), 15-27. plit-periodical 2023, 154 (4), 15-27. https://doi.org/10.15407/plit2023.04.015.