Recovery of Copper by Solution Mining Techniques

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Author
Briggs, D.F.
Issue Date
2015-07-22
Keywords
Arizona Geological Survey Contributed Reports
USA
Pinal County
Arizona
thenardite
salt
gypsum
sylvite
in situ
sulfuric acid

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Citation
Briggs, D.F., 2015, Recovery of Copper by Solution Mining Techniques. Arizona Geological Survey Contributed Report (CR) -15-A.
Description
The mining practice that uses solutions to extract a desired commodity from an ore deposit where it stands without also extracting the rock is known as solution mining. There are essentially two types of solution mining: 1) in-situ and 2) in-place. In-place solution mining requires permeability enhancement techniques such as blasting or previous mining activities (i.e. block-caving) to fragment or increase the permeability of the rock prior to applying a leaching solution to liberate ore from the surrounding ore body. In-situ methods rely solely on the naturally occurring permeability of the ores. Copper as well as a number of other commodities are harvested by solution mining methods. Water-soluble salts such as potash (sylvite), rock salt (halite), thenardite (sodium sulfate) and nahcolite (sodium bicarbonate) are commonly derived from massive sedimentary deposits by in-situ methods. Most of the sulfur produced in the Gulf of Mexico region is recovered by a solution mining method, known as the Frasch process, which injects superheated water to melt the sulfur so it can be pumped to the surface (Christensen et. al., 1991). Approximately ninety percent of the uranium mined in the United States is also recovered by solution mining methods.
URI
http://hdl.handle.net/10150/629577
Additional Links
http://repository.azgs.az.gov/uri_gin/azgs/dlio/1641
Language
en
Series/Report no.
CR-15-A
Rights
Arizona Geological Survey. All rights reserved.
Collection Information
Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
North Bounding Coordinate
53.1144
South Bounding Coordinate
18.6368
West Bounding Coordinate
-133.066
East Bounding Coordinate
-45
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