АНАЛІЗ СТРУКТУРНО-ХІМІЧНОГО СТАНУ ДУПЛЕКС- СИСТЕМ СИЛІКАТИ-СИЛІЦИДИ ЛУЖНО-ЗЕМЕЛЬНІХ МЕТАЛІВ Повідомлення 4. Механізм рафінування доменного чавуну магнієм та його сплавами.: Procesi littâ, 2023, Vol 4 (154), 15-27

• Дата: 2023
• Автори: Бєлов, Б.Ф., Троцан, А.І., Власова, О.В.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: National Academy of Sciences of Ukraine, Physical-Technological Institute of Metals and Alloys of NAS of Ukraine 2023
• Теми: структурно-хімічні реакції; адсорбційна ємність; плавильні шлаки; магній; механізм і технологія рафінування чавуну; порошкові дроти
• Онлайн доступ: https://plit-periodical.org.ua/index.php/plit/article/view/219
• Назва журналу: Casting Processes

A stochastic analysis of the structural and chemical reactions of blast furnace deoxidation and desulfurization by powder wires containing magnesium and its alloys: silicomagnesium calcium (SMgK), ferrosilicomagnesium (FSMg), as well as magnesium + staurolite and ferrosilicocalcium alloys (FSK) was performed. The material balance of structural-chemical reactions was compiled,polygonal cells of SIM complexes of oxysulfide non-metallic inclusions formed, and the technological parameters of ladle processing of cast iron were calculated. The distribution of elements in the processes of refining cast iron with magnesium alloys was studied: the deoxidizing elements are silicon and magnesium, the desulfurizer is magnesium in FSMg alloys; in SMGC alloys - deoxidizerssilicon, magnesium, calcium, desulfurizer — calcium; in ferrosilicocalcium alloys, the deoxidizers are silicon and calcium, the desulfurizer is calcium. When FSK + FK40 alloys are used together, the deoxidizers are silicon and magnesium, and the desulfurizers are magnesium and calcium. A comparative analysis of the effectiveness of the use of fillers for powder-coated wires at theconsumption of alloys in the amount of 1.0 kg/t is presented. It was established that the rational refining technology, tested in industrial conditions in pig-iron ladles, is complex processing with activated smelting slags and powder wires with FS15Mg10+FK40 filler, for which А0=22,2 % and АS=26,7 % . At the same time, both a decrease in the consumption of desulphurizing materials andan increase in the efficiency of blast furnace iron refining are observed.