NDLI: Ammonia Leaching: A New Approach of Copper Industry in Hydrometallurgical Processes

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Ammonia Leaching: A New Approach of Copper Industry in Hydrometallurgical Processes

Content Provider	Springer Nature Link
Author	Koleini, Seyed Mohammad Javad Tavakoli Mohammadi, Mohammad Reza Radmehr, Vahid Khalesi, Mohammad Reza
Copyright Year	2013
Abstract	Ammonia and ammonium salts have been recognized as effective leaching agents in hydrometallurgical processes due to low toxicity and cost, easy recovery and high selective recovery of metals. New research findings on considerable advantages of leaching by these agents and elimination of problems associated with acid leaching have resulted in a new approach in the world to this method. The investigations in this field indicate more frequent use of this method for extracting copper from ore and concentrate relative to other basic metals. In this paper, an attempt was made to describe the basis and different ammonia leaching methods and present the major research activities in this field for copper. Also latest findings and related novel processes have been presented. Comparisons including assessment of advantages and disadvantages of this method relative to acid leaching method, kinetic study of copper ammonia leaching and evaluation of Eh–pH diagrams in a system containing water and ammonia are other parts of this study. Finally, by describing the studies on copper extraction from the resulting pregnant solutions, the applicable extraction agents have been reviewed.
Starting Page	95
Ending Page	104
Page Count	10
File Format	PDF
ISSN	22502122
Journal	Journal of The Institution of Engineers (India): Series D
Volume Number	94
Issue Number	2
e-ISSN	22502130
Language	English
Publisher	Springer India
Publisher Date	2013-12-10
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ammonia Engineering Extraction Copper Leaching
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Mechanical Engineering Geotechnical Engineering and Engineering Geology

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