Verfahren zur Entphosphorung von Eisenschmelze

Details

Veröffentlichungs-Nr.

EP4741517

Anmeldetag

28. März 2024

Veröffentlichung

23. Januar 2025

Rechtsraum

EP

IPC

C21C1/02, C21C7/064, C21C7/00

Abstract

To provide a method for dephosphorizing molten iron that can effectively improve the phosphorus distribution and thus promote a dephosphorization reaction of molten iron by providing electric energy using an electrochemical method. Specifically, provided is a method for dephosphorizing molten iron, applying a current between molten slag and molten iron via two electrodes, with one in contact with the molten iron serving as an anode and the other in contact with only the molten slag serving as a cathode, characterized in that Relational Expression (1) below is satisfied among the density I of the applied current, the molten steel temperature T of the molten iron, the phosphorus distribution Lp in the molten slag, and the required phosphorus distribution Lp' for the molten slag: I ≥ α × ln Lp ′ / Lp × T <img class="EMIRef" id="20af17b2-0fab-4cfc-897c-8302b69eeef7-ia01" /> where in Relational Expression (1), I represents the density (A/m<2>) of the applied current, α represents the constant, Lp represents the phosphorus distribution (-) in the molten slag, Lp' represents the required phosphorus distribution (-) for the molten slag, and T represents the molten steel temperature (K) of the molten iron.

Anmelder

Firma

JFE Steel Corporation

Land

🇯🇵 Japan