Abstract
Electric arc furnace (EAF) dust-coal composite pellets were heated from room temperature to 1423 and 1468 K under flowing argon by means of two heating patterns (non-isothermal tests). Apparent volume variation, compressive strength after heating, and zinc removal efficiency were evaluated, the last as a function of the additives used in the present work. A decrease of pellet size (from 14 to 7 mm in diameter) as well as the presence of Portland cement contributed towards avoiding abnormal swelling caused by growth of iron whiskers, and, as a consequence, there was no significant decrease of compressive strength at ∼1323 K. At 1397 K, highest zinc removal was obtained for pellets with 12 wt-%KCl, and reasons for this result are proposed.
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References
1.
Contrucci
M. A.
Sperman
W. C.
: Iron Steelmaker , 1997 , 24 , (4 ), 39 –45 .
2.
Kotraba
N. L.
Lanyl
M. D.
: Iron Steel Eng ., 1991 , 68 , (4 ), 43 –45 .
3.
Bauer
K.-H.
Grebe
K.
Lehmkühler
H.-J.
Rosenstock
H. G.
schmauch
H.
Vorwerk
H.
: Metall. Plant Technol. Int ., 1990 , 13 , (4) , 74 –87 .
4.
Dressinger
D. B.
Peters
E.
Morgan
G.
: Hydrometallurgy , 1990 , 25 , 137 –152 .
5.
Wang
J. C.
Hepworth
M. T.
Reid
K. J.
: J. Met ., 1990 , 42 , (4 ), 42 –45 .
6.
Donald
J. R.
Pickles
C. A.
: Metall. Trans. B , 1996 , 27B , 363 –374 .
7.
Nyrenda
R. L.
: Miner. Eng ., 1991 , 4 , 1003 –1025 .
8.
MacCrea
M.
Pickles
C. A.
: ISS Electr. Furn. Conf. Proc ., 1995 , 53 , 159 –170 .
9.
Zunkel
A. D.
Schmitt
R. J.
: ISS Electr. Furn. Conf. Proc ., 1995 , 53 , 147 –158 .
10.
Donald
J. R.
Pickles
C. A.
: Can. Metall. Q ., 1996 , 35 , 255 –267 .
11.
Nedar
L.
: Steel. Res ., 1996 , 67 , 320 –327 .
12.
Björkman
B.
Eriksson
J.
Nedar
L.
Samuelsson
C.
: JOM , 1996 , 48 , (3 ), 45 –49 .
13.
Stubbles
J. R.
: ISS Electr. Furn. Conf. Proc ., 1994 , 52 , 179 –85 .
14.
Delhaes
C.
Hauck
A.
Neuschütz
D.
: Steel. Res ., 1993 , 64 , 22 –27 .
15.
Badger
S. R.
Kneller
W. A.
: ISS Electr. Furn. Conf. Proc ., 1997 , 55 , 95 –98 .
16.
Hagni
A. M.
Hagni
R. D.
: in ‘
International symposium on extraction and processing for the treatment and minimization of wastes
’, (ed .
Hager
J.
, et al.) , 1137 –1149 ; 1993 , Warrendale, PA , TMS .
17.
Cruells
M.
Roca
A.
Núñez
C.
: Hydrometallurgy , 1992 , 31 , 213 –231 .
18.
Hagni
A.
Hagni
R. D.
Demars
C.
: JOM , 1991 , 43 , (4 ), 28 –30 .
19.
Rossi
G.
Perin
A.
: J. Iron Steel Inst ., 1969 , 207 , 1365 –1368 .
20.
Mantovani
M. C.
Takano
C.
: Acta Microsc ., 1997 , 6 , A368–A369 .
21.
Mantovani
M. C.
Takano
C.
: Acta Microsc ., 1998 , 7 , A37–A40 .
22.
Grebe
K.
Lehmkühler
H.-J.
: ISS Ironmaking Conf. Proc ., 1991 , 50 , 113 –127 .
23.
Takano
C.
Mourão
M. B.
D’Abreu
J. C.
Kohler
H.
Contrucci
M. A.
Costa
P. H.
Marchese
E. S.
Jacomini
N.
: ISS Ironmaking Conf. Proc ., 1998 , 57 , 1559 –1566 .
24.
Lepinski
J. A.
: ISS Ironmaking Conf. Proc ., 1993 , 52 , 349 –352 .
25.
Hayes
P. C.
Grieveson
P.
: Metall. Trans. B , 1981 , 12B , 579 –587 .
26.
Nascimento
R. C.
Mourão
M. B.
Capocchi
J. D. T.
: ISIJ Int ., 1997 , 37 , 1050 –1056 .
27.
Nascimento
R. C.
Mourão
M. B.
Capocchi
J. D.
: Can. Metall. Q , 1998 , 37 , 441 –447 .
28.
Nascimento
R. C.
Mourão
M. B.
Cappochi
J. D. T.
: Ironmaking Steelmaking , 1999 , 26 , 182 –186 .
29.
Bleifuss
R. L.
: Trans. Soc. Min. Eng. AIME , 1970 , 247 , 225 –231 .
30.
Lu
W.-K.
: Scand. J. Metall ., 1973 , 2 , 169 –172 .
31.
Lu
W.-K.
: Scand. J. Metall ., 1973 , 2 , 273 –276 .
32.
Gupta
S.
Lu
W.-K.
: Can. Metall. Q ., 1987 , 26 , 329 –339 .
33.
Moon
J. T.
Walker
R. D.
: Ironmaking Steelmaking , 1975 , 2 , 30 –35 .
34.
Nicolle
R.
Rist
A.
: Metall. Trans. B , 1979 , 10B , 429 –438 .
35.
Mantovani
M. C.
Takano
C.
: ISIJ Int ., 2000 , 40 , 224 –230 .
36.
Sun
S.
Lu
W.-K.
: ISS Steelmaking Conf. Proc ., 1996 , 55 , 641 –648 .
37.
Ding
Y. L.
Warner
N. A.
: Ironmaking Steelmaking , 1997 , 24 , 224 –229 .
38.
Fruehan
R. J.
: Metall. Trans. B , 1977 , 8B , 279 –286 .
39.
Nasr
M. I.
Omar
A. A.
Khadr
M. H.
El-Geassy
A. A.
: Scand. J. Metall ., 1994 , 23 , 119 –125 .
40.
Carvalho
R. J. De
Netto
P. G. Q.
D’Abreu
J. C.
: Can. Metall. Q , 1994 , 33 , 217 –225 .
41.
White
J. F.
Hager
J. P.
Pusateri
J. F.
: in ‘
Second international symposium on extraction and processing for the treatment and minimization of wastes
’, (ed .
Ramachandran
V.
Nesbitt
C. C.
), 749 –761 ; 1996 , Warrendale, PA , TMS .
42.
Wu
L.
Themelis
N. J.
: JOM , 1992 , 44 , (1 ), 31 –35 .
43.
Walker
P. L.
Jr
Shelef
M.
Anderson
R. A.
: ‘Chemistry and physics of carbon’ , Vol. 4 , 287 –383 ; 1968 , New York , Marcel Dekker .
44.
Rao
Y. K.
: Metall. Trans. B , 1971 , 2B , 1439 –1447 .