Abstract
A relationship between copper in slag and copper in matte during copper sulfide smelting has been derived using industrial data from 42 plants employing blast furnaces, reverberatory furnaces, flash furnaces, and Mitsubishi smelting furnaces together with the available thermodynamic equilibrium data for Cu-Fe-S-O, FeO-SiO2, and Cu-Fe-S systems and laboratory slag-matte equilibrium information. A copper smelting diagram showing oxygen potential; sulfur potential; and copper, magnetite, and sulfur contents in slag during the smelting of different grades of copper mattes is developed for mattes containing less than 70 pct copper. The data presented can be used to determine the entrained copper losses in slag. Further, by combining the calculated value of the entrained matte with the corresponding plant data for the sulfur content of the slag, it is possible to derive the dissolved sulfur content of the slag. These calculated values were in excellent agreement with the experimentally determined sulfide capacity of fayalite slags. It is shown that there is no need to assume the presence of dissolved copper sulfide species in industrial slags. The existing equilibrium data that relate the copper content of slags to oxygen potential adequately describe the copper losses in industrial slags.
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References
A.K. Biswas and W.G. Davenport: Extractive Metallurgy of Copper, Pergamon Press, Elmsford, NY, 2nd ed., 1980, and 3rd ed., 1994.
T.N. Antonioni, C.M. Diaz, H.C. Garven, and C.A. Landolt: in Copper Smelting—An Update, D.B. George and J. C. Taylor, eds., TMS-AIME, Warrendale, PA, 1982, pp. 17–31.
P. Bryk, J. Ryselin, J. Honkalsalo, and R. Malstrom: J. Met., 1958, vol. 10, pp. 395–400.
N.J. Themelis, G.C. Mckerrow, P. Tarassoff, and G.D. Hallett: J. Met., 24, 1972, pp. 25–32.
T. Nagano and T. Suzuki: in Extractive Metallurgy of Copper, J.C. Yannopoulous and J.C. Agarwal, eds., AIME, New York, NY, 1976, vol. 1, pp. 439–57.
I.S. Blair, J. Humphriss, B.P. Joyce, and J.L. Wamock: pp. 168–96.
M. Goto: in Extractive Metallurgy of Copper, pp. 154–67.
Inco Staff: in Extractive Metallurgy of Copper, pp. 218–33.
L.R. Verney: Trans Inst. Min. Metall., 1969, vol. 78, C28–42.
I.L. Barker, J.S. Jacobi, and B.H. Wadia: J. Met., 8, 1957, pp 774–80.
B. Claus and A. Guebel: in Pyrometallurgical Processes in Nonferrous Metallurgy, J.N. Anderson and P.E. Queneau, eds., AIME, New York, NY, 1967, pp. 93–114.
L.R. Verney and P.J. Hansen: in Pyrometallurgical Processes in Nonferrous Metallurgy, 1967, pp. 133–72.
W.G. Davenport and E.H. Partelpoeg: Flash Smelting, Pergamon Press, Elmsford, NY, 1987, pp. 459.
G.J. Brittingham: Trans. Inst. Min. Metall., 75, 1966, C65-C73.
C.J. Newman, G. Macfarlane, K. Molnar, and A.G. Storey: Pyrometallurgy of Copper, Pergamon Press, Elmsford, NY, 1991, pp. 65–80.
H.S. Ray, R. Sridhar, and K.P. Abraham: Extraction of Nonferrous Metals, Affiliated East-West Press, New Delhi, India, 1994.
C. Diaz and C.A. Landolt: Minerales, 1986, vol. 41.
A.V. Vanyukov, V. Ya.Zaitsev, V.S. Kurzina, and S.S. Tihonov: Tsvet. Met., 1964, Jan. pp. 21–27.
R. Shimpo, S. Goto, O. Ogawa, and I. Asakura: Can. Metall. Q., 1986, vol. 25, pp. 113–21.
H. Jalkanen: Scand J. Metall., 10, 1981, pp. 177–84.
M. Nagamori: Metall. Trans., 1974, vol. 5, pp. 531–38.
F.J. Tavera and W.G. Davenport: Metall. Trans. B 10B, 1979, pp. 237–41.
A. Geveci and T. Rosenquist: Trans. Inst. Min. Metall., 82, 1973, pp. C193.
J.M. Toguri and N.H. Santander: Can. Metall. Q., 8, 1969, pp. 167–71.
M. Ruddle, B. Taylor, and A. Bates: Trans. Inst. Min. Metall., 75, 1966, C1-C12.
J.R. Taylor and J.H.E. Jeffes: Trans. Inst. Min. Metall., 85, 1975, pp C18-C24.
A. Yazawa and M. Kameda: Tech. Rep. Tohoku Univ., 19, 1955, p. 251.
A. Yazawa, S. Nakazawa, and Y. Takeda: Advances in Sulfide Smelting, TMS-AIME, Warrendale, PA, 1983, vol. 1, pp. 99–117.
D.R. Gaskell, J. Palacios, and C. Sainsiri: Proc. Elliott Symp., 1990, pp. 161–72.
D.L. Kaiser and J.F. Elliott: Metall. Trans., IIB, 17B, 1986, pp. 147–57.
C.W. Bale and J.M. Toguri: Can. Metall. Q., 15, 1976, pp. 305–18.
E.J. Michal and R. Schuhmann: Trans. AIME, 194, 1952, pp. 724–28.
S.R. Simeonov, R. Sridhar, and J.M. Toguri: Metall. Mater. Trans. IIB, 26B, 1995, pp. 325–34.
S.R. Simeonov, R. Sridhar, and J.M. Toguri: Proc. Symp. on Recent Developments in Non-Ferrous Pyrometallurgy, CIM, Montreal, 1994, paper no. 49.3.
M. Nagamori: J. Met., 1994, vol. 46, pp. 65–70.
M.C. Bell, J.A. Blanco, H. Davies, and R. Sridhar, J. Met., 1978, vol. 30 (10), pp. 4–14.
G. Victrovitch; “Precipitation of Copper on Cooling of Iron Silicate Slags,” paper presented at CIM Conf. of Metallurgists and Int. Symp. on Metallurgical Slags, Nova Scotia, Aug. 24–28, 1980.
A. Yazawa: Can. Metall. Q., 13, 1974, pp. 443–53.
R. Altman and H.H. Kellogg: Trans. Inst. Min. Metall., 81 1972, C163-C175.
F. Sehnalek and I. Imris: Advances in Extractive Metallurgy and Refining, London, IMM, 1972, pp. 39–62.
M.D. Coulter and C.R. Fountain: Non-Ferrous Smelting Symp., Aus IMM, Port Pirie, South Australia, 1989, pp. 237–40.
T. Shibata, Y. Abe, and M. Uekawa: Proc. Copper 91, vol. 4, Pyrometallurgy of Copper, C. Diaz, C. Landolt, A. Luraschi and C.J. Newman, eds., Pergamon Press, Elmsford, NY, 1991, pp. 125–39.
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Sridhar, R., Toguri, J.M. & Simeonov, S. Copper losses and thermodynamic considerations in copper smelting. Metall Mater Trans B 28, 191–200 (1997). https://doi.org/10.1007/s11663-997-0084-5
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DOI: https://doi.org/10.1007/s11663-997-0084-5