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Equilibrium Pressure Measurements Above ZnS from 680° to 825°C

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Abstract

The pressure of the gas in equilibrium with sphalerite has been determined in the temperature range of 680° to 825°C, using the Knudsen orifice method. A comparison of these experimental pressures with those calculated from thermal data and from other equilibrium measurements shows that the vapor above sphalerite is predominantly dissociated ZnS. Equations have been given for correctly calculating dissociation pressures using the Knudsen orifice method. It has been shown that the experimentally determined pressure is the same, whether the zinc sulphide is sphalerite or not, or a mixture of wurtzite and sphalerite.

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Authors and Affiliations

  1. Research Laboratory, Carnegie Institute of Technology, Pittsburgh, USA

    C. Law McCabe (Junior Member AIME, Member of the Staff)

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  1. C. Law McCabe
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Discussion on this paper, TP 3792D, may be sent, 2 copies, to AIME by Nov. 1, 1954. Manuscript, Aug. 24, 1953. New York Meeting, February 1954.

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McCabe, C.L. Equilibrium Pressure Measurements Above ZnS from 680° to 825°C. JOM 6, 969–971 (1954). https://doi.org/10.1007/BF03398330

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  • DOI: https://doi.org/10.1007/BF03398330

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