日本金属学会誌

J. Japan Inst. Metals, Vol. 28, No. 12 (1964),
pp. 856-861

The Diagram of the Cu-S-O System on Fundamental Reactions in the Copper Smelting Process (A Study of Fundamental Reactions in the Copper Smelting Process under the Consideration of Phase Rule, Report 1)

Mitugu Kitano1

1The Faculty of Education, Kanazawa University, Kanazawa

Abstract:

In order to study the fundamental reactions in the copper smelting process from the standpoint of phase rule, the author has made an attempt to establish the equilibrium diagram of the Cu-S-O system. Thermal and chemical analyses have been made for the samples prepared from Cu, Cu2S, Cu2O and SO2 as raw materials.
From the results obtained, the equilibrium diagram of the Cu-S-O system was established in the qualitative scale at 760 mmHg and above 650°C.
The respective reactions of univariant systems in the diagram are as follows:

[Cu2S] + [Cu2O] [Cu] + SO2 && at  745°C
(Cu  soln) [Cu] + SO2 && at  1070°C
(Cu  soln) [Cu] + [Cu2S] + SO2 && at  1060°C
(Cu  soln) [Cu] + [Cu2O] + SO2 && at  1062°C
(Cu2S  soln) (Cu  soln) + [Cu2S] + SO2 && at  1090°C
(Cu2O  soln) (Cu  soln) + [Cu2O] + SO2 && at  1190°C


(Received 1964/7/1)

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