The effect of ore type, depth, and leach time on cyanide species in column tests using NaCN leach solutions
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Authors
Sheridan, Jon P
Issue Date
1988
Type
Thesis
Language
en_US
Keywords
Sulfidic Ore , Oxidized Ore , Carbonaceous Ore , Leaching Time , Ore Depth , Ore Mineralogy , Cyanide Species Concentration , Nacn Leach Solutions , Mackay Theses and Dissertations Grant Collection
Alternative Title
Abstract
Three ores (sulfidic, oxidized and carbonaceous) were analyzed to determine the effects of leaching time, ore depth, and ore mineralogy on cyanide species concentration. NaCN solutions were percolated through opaque columns filled with milled ore. Column design made liquid sample collection possible from various depths at specific times. The concentrations of free and total cyanide, Fe(CN)g , Fe(CN)g4-, SCN", and Cu(CN)43" were determined for each sample. Extended percolation time led to increases in free cyanide concentrations and decreased SCN and Cu(CN)4 concentrations regardless of ore depth. Free cyanide concentration decreased while Fe(CN)g4" concentration increased with ore depth. Highest concentrations of Fe(CN)g4", O SCN", and Cu(CN)4 were found in the sulfidic ore, with expected low free cyanide concentrations. Lowest concentrations of Fe(CN)g4 , SCN", and Cu(CN)4 were found in the oxidized ore. Intermediate concentrations of these cyanide species were found in the carbonaceous ore.
Description
Thesis Number: 2352.
Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.
Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology Act (LSTA). To obtain a high quality image or document please contact the DeLaMare Library at https://unr.libanswers.com/ or call: 775-784-6945.
Citation
Publisher
University of Nevada, Reno
License
In Copyright(All Rights Reserved)