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  • Study of the reaction kinetics of Mn and phosphorus in the refining of iron pretreated in the convertor by mixed blowing and with the use of Mn mineral


Research was performed on the reduction kinetics of manganese and the removal of phosphorus in hot metal low in manganese and silicon, coming either directly from the blast furnace or from a pre-treatment facility. It is well known that a low level of silicon and manganese in the hot metal makes the formation of the slag more difficult. Through the use of manganese ore, it was possible to overcome this inconvenience by favouring the formation of the slag, and it was possible to obtain higher levels of manganese with lower levels of phosphorus in the steel. In laboratory tests the effect of the added manganese ore reduces the smelting temperature to an extent roughly equivalent to 15 kg/t of iron or 1.5 kg/t of fluorite. The kinetics were studied in a 7 kg induction furnace, using an alumina crucible with the initial and final blowing conditions being simulated.

Additional information

Authors: POLI A, Centro Sviluppo Materiali SpA, Taranto (IT)
Bibliographic Reference: EUR 14256 IT (1992) 57 pp., FS, ECU 7.50
Availability: (2)
ISBN: ISBN 92-826-4332-8
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