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Experimental investigation of the phase relations in the system Cu-Ni-S in the temperature range 1200 C to 700 C
Dissertation (MSc)--University of Pretoria, 1996.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2022
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| _version_ | 1867613722080444416 |
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| access_status_str | Open Access |
| author2 | Merkle, R.K.W. (Roland Karl Willi), 1954- |
| author_browse | Merkle, R.K.W. (Roland Karl Willi), 1954- |
| author_facet | Merkle, R.K.W. (Roland Karl Willi), 1954- |
| collection | Thesis |
| dc_rights_str_mv | © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc)--University of Pretoria, 1996. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/83169 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:39.540Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/83169 Experimental investigation of the phase relations in the system Cu-Ni-S in the temperature range 1200 C to 700 C Merkle, R.K.W. (Roland Karl Willi), 1954- Snyman, C.P. Bruwer, Juliana Shana UCTD Experimental investigation phase relations, Cu-Ni-S Dissertation (MSc)--University of Pretoria, 1996. Phase relations in the ternary system Cu-Ni-S were investigated using 275 samples in evacuated quartz-glass tubes. A comparative statistical evaluation was made between areas (0.12 mm2 ) analysed using EDS (Energy Dispersive Spectrometry) with a Scanning Electron Microscope (SEM) and spot analyses on a grid pattern using WDS (Wavelength Dispersive Spectrometry) with the Electron Microprobe (EMP). EDS analyses of areas were found to give more reproducible and statistically more meaningful results. Averaged area analyses of phases in equilibrium phase assemblages were used for construction of the l 200°C, 1100°C, 1000°C, 900°C, 800°C and 700°C isothermal sections. From the combined results of the isothermal sections, the liquidus phase diagram could be determined. This diagram, together with the liquid compositions of invariant phase equilibria from the isothermal sections, were used to determine the crystallisation paths of the Cu-Ni-S system. Converter matte that is slow-cooled in the beneficiation process of Cu, Ni, and platinum group elements usually contains elements other than Cu, Ni, and S in small amounts. Of all these elements Fe probably has the greatest effect on the phase diagram, especially when present in concentrations greater than the typical ~3wt% and the envisaged effects of Fe on the phase diagram is discussed. It is, however, reasonable to assume that the Cu-Ni-S system represents converter matte composition sufficiently well and the Cu-Ni-S phase Geology MSc Unrestricted 2022-01-12T05:59:55Z 2022-01-12T05:59:55Z 19/8/2021 1996 Dissertation * http://hdl.handle.net/2263/83169 en © 2021 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Experimental investigation phase relations, Cu-Ni-S Experimental investigation of the phase relations in the system Cu-Ni-S in the temperature range 1200 C to 700 C |
| title | Experimental investigation of the phase relations in the system Cu-Ni-S in the temperature range 1200 C to 700 C |
| title_full | Experimental investigation of the phase relations in the system Cu-Ni-S in the temperature range 1200 C to 700 C |
| title_fullStr | Experimental investigation of the phase relations in the system Cu-Ni-S in the temperature range 1200 C to 700 C |
| title_full_unstemmed | Experimental investigation of the phase relations in the system Cu-Ni-S in the temperature range 1200 C to 700 C |
| title_short | Experimental investigation of the phase relations in the system Cu-Ni-S in the temperature range 1200 C to 700 C |
| title_sort | experimental investigation of the phase relations in the system cu ni s in the temperature range 1200 c to 700 c |
| topic | UCTD Experimental investigation phase relations, Cu-Ni-S |
| url | http://hdl.handle.net/2263/83169 |