The INCO finishing procedure represents the near final stages of copper production at the Copper Cliff Smelter in Sudbury, Ontario, whereby semi-blister copper, at 4--6 wt % Ni and 2--3 wt % S, is processed into blister copper, at 100 ppm S and 0.4 wt % Ni in a modified Pierce-Smith converter combining top-blown oxygen injection and bottom-blown nitrogen stirring of the melt to accelerate semi-blister desulfurization. The procedure is performed in two stages of equal duration: in the first, melt saturation with oxygen and sulfur elimination from 2--3 wt % S to 300 ppm is achieved by 45 minutes of oxygen top-blowing and nitrogen bottom stirring; in the second stage, oxygen injection is terminated and sulfur removal from 300 ppm to 30--100 ppm. proceeds by the ppm to 30--100 ppm proceeds by the reaction of dissolved S and O under a further 45 minutes of nitrogen stirring. / Cu-S and Cu-Ni-S alloys were also exposed to the open atmosphere to examine desulfication of stagnant melts under air. (Abstract shortened by UMI.)
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.21321 |
| Date | January 1999 |
| Creators | Roumeliotis, Ioannis John. |
| Contributors | Harris, Ralph (advisor), Demopoulos, George (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Engineering (Department of Mining and Metallurgical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001658363, proquestno: MQ50657, Theses scanned by UMI/ProQuest. |
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