Premium
Microanalytical assessment of solidified slags in view of steel dephosphorization
Author(s) -
Preßlinger Hubert,
Antlinger Kurt,
Klepp Kurt O.,
Hiebler Herbert
Publication year - 1997
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199701710
Subject(s) - silicate , slag (welding) , metallurgy , wüstite , metal , ferrite (magnet) , ionic bonding , materials science , dissociation (chemistry) , oxide , crystal (programming language) , chemistry , mineralogy , ion , composite material , organic chemistry , computer science , programming language
The process of refining hot metal in the LD‐converter leads to the formation of a slag which according to the theory of ionic dissociation consists of anions, anionic complexes and metal cations. The electroneutrality principle forces local order in the liquid slag ‐ which is transformed to long range order during the solidification of the crystal lattices. Solid converter slags obtained at the end of blowing consist of mixed crystals of dicalcium silicate, wustite, and dicalcium ferrite phases. Microanalytical investigations and model calculations on mixed crystal formation indicate that the phosphorus of the slag is incorporated into the dicalcium silicate mixed crystal as PO 4 3− partially substituting the SiO 4 4− ‐anions.