Dephosphorization of a liquid Fe–5mass%P alloy with a solid–liquid coexisting flux in which 2CaO·SiO
2 particles (20 to 50 µm) are uniformly dispersed in CaO–SiO
2–Fe
tO slags has been studied at 1 400°C. For the slag with high SiO
2 and low T.Fe contents, the change of slag composition is small and the fraction of 2CaO·SiO
2 particles to slag increases slightly during dephosphorization in which the
Lpsolid/slag and
Lpslag/metal values are low. For the slag with moderate SiO
2 and high T.Fe contents, the change of slag composition is considerable and the fraction of 2CaO·SiO
2 particles to slag increases considerably during dephosphorization in which the
Lpsolid/slag and
Lpslag/metal values are high at initial period, but these values decrease with time. For the slag with low SiO
2 and high T.Fe contents, the change of slag composition is small and the fraction of 2CaO·SiO
2 particles to slag decreases slightly during dephosphorization in which the
Lpslag/metal and
Lpsolid/slag values are high, but
Lpsolid/slag value decreases considerably even with small change of slag composition.
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