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2014•Acta Metallurgica Slovaca - ConferenceRequires access

DEPHOSPHORIZATION OF FERROMANGANESE

Mirosław Karbowniczek, Andrzej Michaliszyn, Zygmunt Wcisło, W. Ślęzak

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Abstract

Phosphorus in steelmaking processes is a harmful admixture and at every stage of the production of steel must be removed from the melt. One of the sources are ferroalloys, which are used to introduce alloying element for steel. The paper presents method of dephosphorization of high and medium carbon ferromanganese using mixture based on CaO-CaF2, containing in its composition CaSi and CaC2. The experimental heats were conducted in an induction furnace with the capacity of 20 kg, in temperature about 1450 °C. While the dephosphorizing mixture was being added, a stream of argon was being injected into the metal bath. Dephosphorization efficiency raged from 21 to 42%. This work has been shown the relationship between dephosphorization, and the amount of inert gas and initial concentration of phosphorus in ferromanganese.

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What this paper is about

Phosphorus in steelmaking processes is a harmful admixture and at every stage of the production of steel must be removed from the melt. One of the sources are ferroalloys, which are used to introduce alloying element for steel. The paper presents method of dephosphorization of high and medium carbon ferromanganese using mixture based on CaO-CaF2, containing in its composition CaSi and CaC2. The experimental heats were conducted in an induction furnace with the capacity of 20 kg, in temperature about 1450 °C. While the dephosphorizing mixture was being added, a stream of argon was being injected into the metal bath. Dephosphorization efficiency raged from 21 to 42%. This work has been shown the relationship between dephosphorization, and the amount of inert gas and initial concentration of phosphorus in ferromanganese.

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Available abstract

Phosphorus in steelmaking processes is a harmful admixture and at every stage of the production of steel must be removed from the melt. One of the sources are ferroalloys, which are used to introduce alloying element for steel. The paper presents method of dephosphorization of high and medium carbon ferromanganese using mixture based on CaO-CaF2, containing in its composition CaSi and CaC2. The experimental heats were conducted in an induction furnace with the capacity of 20 kg, in temperature about 1450 °C. While the dephosphorizing mixture was being added, a stream of argon was being injected into the metal bath. Dephosphorization efficiency raged from 21 to 42%. This work has been shown the relationship between dephosphorization, and the amount of inert gas and initial concentration of phosphorus in ferromanganese.

Key concepts: Ferromanganese, Chemistry, Metallurgy, Materials science, Manganese

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