V. Vorobyov, A. Golunov, A. Ignatyev, Outotec Saint Petersburg, Institute of Metallurgy (Ural branch of Russian Academy of Sciences); agolunov@bk.ru

Production of manganese alloys from high-basic ores is efficient from the technical and economical point of view, if the processes of reduction and refinement in terms of carbon and phosphorus are implemented in three stages: in the first stage, saleable and process carbon ferromanganese should be produced; in the second stage, saleable and process ferrosilicomanganese should be produced using a slag-less method; in the third stage, by mixing ore-lime melt with liquid ferrosilicomanganese (17-65% Si), all grades of ferromanganese should be produced (from medium- to low-carbon lowphosphorus products).

1. Svyatov B., Tolymbekov M., Baysanov S.. The foundation and development of Kazakhstan manganese industry. Almaty “Iskander”, 2002, 416 p.
2. Zhuchkov V., Zhdanov A., Zayakin O. Research of the softening temperatures of manganese raw materials. Magazine “Melts”, No 3, 2006, p.29-31.
3. Kramarov A.. Electrometallurgy of ferroalloys. M-L. ONTI, NKTM, USSR, 1936, 312 p.
4. Grigorovich K., Bogoliubov V., Elyutin V., Samarin A., Yazykov V. Ferroalloys. M-L. GRL of Ferrous, 1936, 312 p.
5. Gasik M., Lyakishev N. Theory and technology of ferroalloys electrometallurgy. M: JV Intermet engineering, 1999, 764 p.
6. Gabdullin T., Baysanov S., Takenov T., Buketov M. et al. Low phosphorus carbon ferromanganese production from ores of Kazakhstan deposits. Steel #7, 1980, p. 583-584.
7. Vorobyov V., Golunov A., Ignatiev A. Characteristics of compositions and solutions of processing of import rich acid and high-basicity manganese ores. Steel #11, 2008
8. Emlin B., Gasik M. Electrometallurgical processes reference book. M. Metallurgy, 1978, 288 p.