Presentation - Third International Slag Valorisation Symposium

IMPROVED SLAG QUALITIES BY LIQUID SLAG TREATMENT
Crtotal (leachate) in mg/l
0,30
0,25
0,20
0,15
0,10
0,05
0,00
EAF-slags: original and laboratory modified
(original slag: Fe total -parts < 1,0 %-wt.)
XRD-investigation:
point: no (Mg,Fe)-(Fe,Al,Cr)-spinel and
square: (Mg,Fe)-(Fe,Al,Cr)-spinel
sp 0,05 mg/l
operational test: without bauxite-addition
operational test: with bauxite-addition
0 5 10 15 20 25 30 35 40 45
factor sp = (0,2xMgO + 1,0xAl 2O 3 [+ 4,0xFe total] lab.- 0,5xCr 2O 3) in %-wt.
32 Second International Slag Valorisation Symposium │ D. MUDERSBACH
sp >25 %-wt. : Crtotal in leachate