Abstract
Data on main manganese ores deposits by Russian Federation subjects presented. It was shown, that main part of manganese ore raw materials prognostic resources are concentrated in Altaj-Sayan and Enisej-East-Sayan metallogenic provinces. Estimation of metallurgical value of manganese ores deposits, located at the territory of Altaj-Sayan metallogenic province, carried out. A technological flow-chart of manganese-containing raw materials elaborated, comprising high quality manganese concentrate obtaining, its preparation, synthesis of marokite and mono-phase CaMnO3 material, marokite briquetting with a reducing agent and application for steel processing in ladle-furnace facility. A possibility shown to utilization of CaMnO3 mono-phase material mixed with a reducing agent and high quality manganese concentrate for production of metal manganese. Thermodynamic calculations and experiment studies on polymetallic manganese-containing raw material beneficiation enabled to determine main technological parameters of extraction and elaborate a technological flow-chart of beneficiation. The elaborated technology enables to obtain high quality manganese, nickel, iron and cobalt concentrates. Application of optimal technological parameters of beneficiation enables to extract from a polymetallic manganese-containing raw materials up to 95–97% of manganese, 98–99% of nickel, 96–98% of iron. It was shown, that it is reasonable to use the manganese concentrate for low phosphor metal manganese smelting, that will enable to decrease the dependence from manganese-containing materials import. A technology of steel alloying by obtained nickel concentrate elaborated. The substitution of metal nickel by nickel concentrate will considerably reduce expenses for alloying. A technology of metalized iron production by a solid-phase reducing method from an iron concentrate also elaborated, which will enable to decrease impurities content in steel during its application.
Highlights
Существование и развитие черной металлургии тесно связано с ферросплавным производством, поскольку обработка жидкого металла ферросплавами остается одним из основных методов воздействия на качество и свойства стали, чугуна и отчасти цветных металлов
that main part of manganese ore raw materials prognostic resources are concentrated in Altaj-Sayan
marokite briquetting with a reducing agent
Summary
Существование и развитие черной металлургии тесно связано с ферросплавным производством, поскольку обработка жидкого металла ферросплавами остается одним из основных методов воздействия на качество и свойства стали, чугуна и отчасти цветных металлов. Т марганцевых сплавов, что составляет около половины от необходимого для отечественной промышленности. В России имеются значительные балансовые запасы марганцевых руд (более 290 млн т), но марганцевые руды большинства отечественных месторождений отличаются невысоким качеством: при низком содержании марганца (18–33 %) и высоком удельном содержании фосфора (отношение P/Mn >0,006) они имеют повышенное содержание железа и кремнезема и относятся к труднообогатимым.
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