Ladle skimming slag, Ladle furnace refining, slag, Ferrous slag

Melting point / freezing point

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

weight of evidence

Study period:

1984

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Peer-reviewed handbook or collection of data

Principles of method if other than guideline:

no detailed description in the handbook required

GLP compliance:

not specified

Type of method:

other: no detailed description.

Melting / freezing pt.:

1 100 - 1 400 °C

Atm. press.:

ca. 1 013 hPa

Decomposition:

no

Sublimation:

no

Remarks on result:

other: Ferrous slags are UVCB with a broad range of transition from solid state to liquid state

(Atmospheric pressure was not reported in the study but estimated by the IUCLID editor)

There is no clearcut melting point for slags but due to the complex structure of interlaced silicon and other analytes, there is a decrease in viscosity and an increase in (ion) conductivity over a broad range of temperature. The melting point is reported to be 1100 - 1400 °C.

Conclusions:

Ferrous slags are UVCB with a broad range of transition from solid state to liquid state. The melting point of ferrous slags is between 1100 - 1400 °C

Executive summary:

Ferrous slags are UVCB with a broad range of transition from solid state to liquid state. This transition (melting) occurs at temperatures of 1100 - 1400 °C, being influenced e.g. by the exact composition of the slags.

Reference 2

Endpoint:

melting point/freezing point

Type of information:

other: review

Adequacy of study:

weight of evidence

Study period:

2007

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Basic data given. Weight of evidence acceptable

Principles of method if other than guideline:

literature review

GLP compliance:

not specified

Type of method:

other: not reported

Melting / freezing pt.:

ca. 1 400 °C

Atm. press.:

ca. 101 300 Pa

Decomposition:

no

Sublimation:

no

Remarks on result:

other: Ferrous slags are UVCB with a broad range of transition from solid state to liquid state

(Atmospheric pressure was not reported in the study but is estimated by the IUCLID editor)

This slag type is formed at a temperature of > 1400 °C from molten material in a process similar to the formation of natural volcanic material.

Conclusions:

Ferrous slags: formation at > 1400 °C

Executive summary:

Ferrous slags are UVCB with a broad range of transition from solid state to liquid state. They are formed at a temperature of > 1400 °C.

Description of key information

Melting range is 1100 - 1400 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

1 400 °C

Additional information

Ferrous slags are formed at a temperatures above 1400 °C. As ferrous slags are UVCB composed of several fused silicates of different chain length, they have no well-defined melting point but a melting range. The transition from solid state to the liquid state (melting) occurs at temperatures of 1100 - 1400 °C, being influenced e.g. by the exact composition of the slags.