Physico-Chemical Investigation of Copper Smelting (2nd Report) Statistical-Thermodynamical Consideration on the Behaviour of Oxygen and Hydrogen in Molten Copper

Yagihashi, Tetsuo

doi:10.2320/jinstmet1952.17.1_11

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“…Hirakiso and co-workers [3] and Yagihashi [4] investigated copper-rich Cu-S solutions and assumed that these solutions behave as ideal ones. The equilibrium constant they expressed by the equation:…”

Section: Methods Reported In the Literature For Thermodynamic Propert...mentioning

confidence: 99%

“…Composition of Liquid II ranges from slightly less sulphur than in Cu 2 S to those more than in Cu 2 S. These solutions play important role in the copper-making stage of the copper matte converting operation. For these reasons these liquids were studied quite extensively [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…The first method involves equilibration of liquid copper with a gas which generating sulphur in gaseous state (S 2 (g)) e.g. H 2 S -H 2 [1][2][3][4][5][9][10] or N 2 -S 2 Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 2 shows the function x [S] / P S 2 0.5 = f(x [S] , T = const), and limiting value of this function is equal to the equilibrium constant (K [S] ) at constant temperature.Utilizing experimental data from several sources[1,[3][4][5]10,15], the equilibrium constants (K [S] ) for reaction (2) were esti-…”

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confidence: 99%

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Archives of Metallurgy and Materials

Kucharski

2018

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A new method for description of thermodynamic properties of Cu-S mixtures is put forward. The basic feature of this method is the assumption that the activity coefficient of sulphur dissolved in liquid copper is equal to 1 for infinite dilute solution (γ [S] = 1 for x [S] = 0). In consequence the following relationships were established:1. The equilibrium constant for the reaction of sulphur dissolution in liquid copper (0.5S 2 (g) = [S] Cu ):[S] 12300 ln 5.4820 K T2. Non-temperature dependence of the activity coefficient of sulphur dissolved in the copper-reach liquid (Liquid I):3. The chemical potential of the sulphur dissolved in copper in infinite dilute solution:12404 99.643 J (mol[S]) T 4. Non-temperature dependence of the activity of sulphur in Cu-S sulphur-rich liquid (Liquid II) -Fig. 6. 5. Non-temperature dependence of the activity of copper in Cu-S sulphur-rich liquid (Liquid II) -Fig. 7. 6. The equilibrium constant for the reaction of sulphur removal from liquid copper ([S] Cu + 2[O] Cu = SO 2 (g)

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Section: Methods Reported In the Literature For Thermodynamic Propert...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The first method involves equilibration of liquid copper with a gas which generating sulphur in gaseous state (S 2 (g)) e.g. H 2 S -H 2 [1][2][3][4][5][9][10] or N 2 -S 2 Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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