Cleaner recovery of multiple valuable metals from cyanide tailings via chlorination roasting
Recovery of valuable metals is hindered by sulfur in cyanide tailings. In this work, a process for the clean recovery of multiple valuable metals through chlorination roasting was proposed. HSC software was used to find that the process of dissociation of chlorides is further accelerated by sulfur i...
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Published in | Separation science and technology Vol. 56; no. 12; pp. 2113 - 2123 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Abingdon
Taylor & Francis
13.08.2021
Taylor & Francis Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | Recovery of valuable metals is hindered by sulfur in cyanide tailings. In this work, a process for the clean recovery of multiple valuable metals through chlorination roasting was proposed. HSC software was used to find that the process of dissociation of chlorides is further accelerated by sulfur in the tailings. Experiments were carried out to study temperature variables and chlorinated agent variables. The optimum conditions were identified to be a CaCl
2
dosage of 4%, roasting temperature of 1323 K, achieved maximum recovery of 84% of Au, 71% of Ag, 72% of Cu, 92% of Pb, and 69% of Zn. |
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ISSN: | 0149-6395 1520-5754 |
DOI: | 10.1080/01496395.2020.1812650 |