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UBC Theses and Dissertations
A survey of conventional and novel processes for the treatment of refractory gold Fairley, Lance Michael
Abstract
This thesis is a survey of treatments for the recovery of gold from refractory ores. An elucidation of the characteristics leading to gold retention and a definition for refractory gold ore is presented. From this survey of treatments are derived diagnostic conditions that may be useful in predicting the specific refractory characteristics of many ores. Conventional processes are surveyed and include the refractory ore treatments that enjoy commercial application. Oxidative pretreatments, lixiviants for gold dissolution, and adsorption methods are discussed for both conventional and emerging or less known refractory gold ore treatments. These emerging methods may have seen considerable research and possibly some commercial application. Included are some alternate techniques that were developed for specific ores and that may have been superseded by less expensive or more general treatments. Some diagnostic test conditions are proposed as being useful in elucidating the refractory components of non-cyanidable ores. Many pretreatments and lixiviating leaches are applied to sulfidic ores with cyanidation gold recoveries as low as 2.6% leading to extractions as high as 99%. Samples of moderately refractory carbonaceous ore with varying organic carbon and sulfide content are treated similarly and exhibit extraction gains from 66.5% to 92.3%
Item Metadata
Title |
A survey of conventional and novel processes for the treatment of refractory gold
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1998
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Description |
This thesis is a survey of treatments for the recovery of gold from refractory ores. An elucidation
of the characteristics leading to gold retention and a definition for refractory gold ore is presented.
From this survey of treatments are derived diagnostic conditions that may be useful in predicting the
specific refractory characteristics of many ores.
Conventional processes are surveyed and include the refractory ore treatments that enjoy commercial
application. Oxidative pretreatments, lixiviants for gold dissolution, and adsorption methods are
discussed for both conventional and emerging or less known refractory gold ore treatments. These
emerging methods may have seen considerable research and possibly some commercial application.
Included are some alternate techniques that were developed for specific ores and that may have been
superseded by less expensive or more general treatments.
Some diagnostic test conditions are proposed as being useful in elucidating the refractory
components of non-cyanidable ores. Many pretreatments and lixiviating leaches are applied to
sulfidic ores with cyanidation gold recoveries as low as 2.6% leading to extractions as high as 99%.
Samples of moderately refractory carbonaceous ore with varying organic carbon and sulfide content
are treated similarly and exhibit extraction gains from 66.5% to 92.3%
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Extent |
5311616 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-05-23
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0078503
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1998-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.