Fundamental Researches on Smelting of Sulphide Ores. IV : On the Equilibrium in the Reduction of Solid Lead Sulphide by Hydrogen Gas

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概要

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• The equilibrium in the reduction of solid lead sulphide by hydrogen gas was studied by means of the dynamical method over the temperature range 582〜775℃. The equilibrium constant and the standard free energy change for the reaction were represented by the following equations as a function of temperature : PbS(s)+H_2 =Pb(1)+H_2S ; log Kp=-3, 500/T+1.601, 〓F°=16, 009-7.323T. By combining the equations with the known ones of hydrogen sulphide gas, the following equations were obtained with regard to the dissociation of solid lead sulphide : 2PbS(s)=2Pb(1)+S_2 ; log P_<S_2>=-11, 386/T+8.302, 〓F°=74, 950-37.97T. And also using the results and the existing data, the following thermodynamical values in relation to the formation of solid lead sulphide were obtained : Pb(s)+S(r)=PbS(s) ; 〓H298.1=-22, 280, 〓F°298.1= -22, 330.

• 東北大学の論文

著者

• SUDO Kingo

  The Research Institute of Mineral Dressing and Metallurgy

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• Studies on Treatment of Uranium Ores. II : Recovery of Uranium from Leach Liquors of a Uranium Ore from the Matsuiwa Mine
• Fundamental Studies on Uranium Oxides. II : Equilibria among UO_2, U_4O_9 and U_3O_8 at 500〜1, 200℃
• On the Dissociation Pressure of Pyrite
• Fundamental Researches on Smelting of Sulphide Ores. IV : On the Equilibrium in the Reduction of Solid Lead Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. IX : On the Equilibrium in the Reduction of Sulphur in Molten Tin by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. VIII : On the Equilibrium in the Reduction of Solid Stannous Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. VI : On the Equilibrium in the Reduction of Solid Cuprous Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. X : On the Equilibrium in the Reduction of Sulphur in Molten Lead by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. V : On the Equilibrium in the Reduction of Solid Cobaltous Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. VII : On the Equilibrium in the Reduction of Copper Sulphide in Molten Copper by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. III : On the Equilibrium in the Reduction of Solid Silver Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. II : On the Equilibrium in the Reduction of Solid Ferrous Sulphide by Hydrogen Gas
• Fundamental Researches on Smelting of Sulphide Ores. XIV : On Molten Copper Sulphide

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