An improved mathematical model for melt flow in induction furnaces and comparison with experimental data

  • PDF / 304,746 Bytes
  • 3 Pages / 603 x 783 pts Page_size
  • 84 Downloads / 201 Views

DOWNLOAD

REPORT


I00 a

eo

%\ @

o

z

4o

REFERENCES

g o

50

40

STARTING

50 MATTE

60

70

GRADE ,

80

%Cu

Fig. 3 - - Combined elimination of arsenic in converter and anode furnace as functions of blowing temperature and starting matte grade. Small circles are the data points from commercial operations, as reported by George, Donaldson, and Johnson, ~: whereas solid curves are calculated by the present computer model. Note that the eliminations starting from white metal (80 pet Cu matte) are less than 0.2 pet or practically negligible.

IOO

o

8o

o

o

~

o

Oooo

0 Z

0 Iz ~r "3 I,d

60 o

oO 0 0 o o

40

_1 _1 "~ r,r w

An Improved Mathematical Model for Melt Flow in Induction Furnaces and Comparison with Experimental Data

20

0

0

1. P.C. Chaubal and M . Nagamori: Metall. Trans. B, 1982, vol. 13B, p p . 339-48. 2 . R.W. Ruddle: The PhysicalChemistry o fCopper Smelting, Inst. Min. Met., London, 1953, p . 125. 3 . M . Nagamori and P. C. Chaubal: Metall. Trans. B, 1982, vol. 13B, p p . 319-29. 4 . H.H. Kellogg: Trans. TMS-AIME, 1967, vol. 239, p p . 1439-49. 5 . M . Nagamori and P.J. Mackey: Metall. Trans. B, 1978, vol. 9B, p p . 567-79. 6 . M . Nagamori, P. J. Mackey, and P. Tarassoff: Metall. Trans. B, 1975, vol. 6B, p p . 295-301. 7 . J.A. Vogt, P.J. Mackey, and G.C. Balfour: Copper and Nickel Converters, R.E. Johnson, ed., TMS-AIME, Warrendale, PA, 1979, p p . 357-90. 8 . F.E. Lathe and L. Hodnett: Trans. TMS-AIME, 1 9 5 8 , vol. 212, pp. 603-17. 9 . O. Herneryd, O.A. Sundstrom, and A. Norro: J. Metals, 1954, vol. 6 , no. 3 , p p . 330-37. 10. R.E. Johnson, N.J. Themelis, and G.A. Eltringham: Copper and Nickel Converters, R. E. Johnson, ed., TMS-AIME, Warrendale, PA, 1979, p p . 1-32. 11. S. Edlund and S. Lundquist: Copper and Nickel Converters, R.E. Johnson, ed., TMS-AIME, Warrendale, PA, 1979, p p . 239-56. 12. D.B. George, J.W. Donaldson, and R.E. Johnson: World Mining and Metals Technology, Proceedings of the Joint MMIJ-AIME Meeting, Denver, CO, A. Weiss, ed., AIME, NewYork, NY, 1976, vol. 1 , p p . 534-50.

I

I

[

I

I

30

40

50

60

70

STARTING

MATTE

GRADE ,

80

%Cu

Fig. 4--Combined elimination of antimony in converter and anode furnace as functions of blowing temperature and starting matte grade. Small circles are due t o commercial operations after George, Donaldson, and Johnson, ~2while solid curves are predictedby the present computer simulation model. The eliminations from white metal on are less than 3 pet, or negligibly small, as shown in the graph.

copper6 had to be modified, as shown in Table I, so as to retain an increasing volatilization with increasing temperature. In other words, the present literature data for antimony6 apparently contain some contradictions. The discrepancy observed for arsenic (Table II) may be due to the lack of accuracy in the fundamental data in part. Similarly, the information available from smelters are not very systematic nor extensive, as seen in Tables II and III. Thus, further experimental work should be suggested for both fundamental and industrial researche