Effect of temperature on leaching behavior of copper minerals with different occurrence states in complex copper oxide ores

2019 ◽  
Vol 29 (10) ◽  
pp. 2192-2201 ◽  
Author(s):  
Gai-rong WANG ◽  
Yuan-yuan LIU ◽  
Lin-lin TONG ◽  
Zhe-nan JIN ◽  
Guo-bao CHEN ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Effect Of Temperature ◽  
Leaching Behavior ◽  
Complex Copper

Copper Recovery from Yulong Complex Copper Oxide Ore by Flotation and Magnetic Separation

JOM ◽  
2017 ◽  
Vol 69 (9) ◽  
pp. 1563-1569 ◽  
Author(s):  
Junwei Han ◽  
Jun Xiao ◽  
Wenqing Qin ◽  
Daixiong Chen ◽  
Wei Liu
Keyword(s):  
Copper Oxide ◽  
Magnetic Separation ◽  
Copper Recovery ◽  
Complex Copper

Technological conditions and kinetics of leaching copper from complex copper oxide ore

2009 ◽  
Vol 16 (6) ◽  
pp. 936-941 ◽  
Author(s):  
Xi-liang Sun ◽  
Bai-zhen Chen ◽  
Xi-yun Yang ◽  
You-yuan Liu
Keyword(s):  
Copper Oxide ◽  
Kinetics Of ◽  
Complex Copper

A New Technique for Recovering Copper From Complex Copper Oxide Ore by Flotation and Metallurgical Processing

JOM ◽  
2018 ◽  
Vol 71 (2) ◽  
pp. 784-790 ◽  
Author(s):  
Xu Bai ◽  
Shu-Ming Wen ◽  
Qi-Cheng Feng ◽  
Jian Liu ◽  
Yi-Lin Lin ◽  
...  
Keyword(s):  
Copper Oxide ◽  
New Technique ◽  
Metallurgical Processing ◽  
A New Technique ◽  
Complex Copper

Nucleation of Disorder in Fe3Al Alloys

1967 ◽  
Vol 25 ◽  
pp. 312-313
Author(s):  
P. R. Swann ◽  
W. R. Duff ◽  
R. M. Fisher
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Annealing Temperature ◽  
Antiphase Domain ◽  
Effect Of Temperature ◽  
Domain Structures ◽  
Transmission Electron ◽  
Domain Boundaries ◽  
Higher Temperature ◽  
The One

Recently we have investigated the phase equilibria and antiphase domain structures of Fe-Al alloys containing from 18 to 50 at.% Al by transmission electron microscopy and Mössbauer techniques. This study has revealed that none of the published phase diagrams are correct, although the one proposed by Rimlinger agrees most closely with our results to be published separately. In this paper observations by transmission electron microscopy relating to the nucleation of disorder in Fe-24% Al will be described. Figure 1 shows the structure after heating this alloy to 776.6°C and quenching. The white areas are B2 micro-domains corresponding to regions of disorder which form at the annealing temperature and re-order during the quench. By examining specimens heated in a temperature gradient of 2°C/cm it is possible to determine the effect of temperature on the disordering reaction very precisely. It was found that disorder begins at existing antiphase domain boundaries but that at a slightly higher temperature (1°C) it also occurs by homogeneous nucleation within the domains. A small (∼ .01°C) further increase in temperature caused these micro-domains to completely fill the specimen.

Surface reconstructions of (001) cleaved GdBa2Cu3O7-δ

1992 ◽  
Vol 50 (1) ◽  
pp. 106-107
Author(s):  
H.W. Zandbergen ◽  
M.R. McCartney
Keyword(s):  
Electron Microscopy ◽  
Copper Oxide ◽  
Grain Boundaries ◽  
Atomic Structure ◽  
Oxygen Deficiency ◽  
Surface Layers ◽  
Layer Sequence ◽  
Surface Reconstructions ◽  
Good Agreement

Very few electron microscopy papers have been published on the atomic structure of the copper oxide based superconductor surfaces. Zandbergen et al. have reported that the surface of YBa2Cu3O7-δ was such that the terminating layer sequence is bulk-Y-CuO2-BaO-CuO-BaO, whereas the interruption at the grain boundaries is bulk-Y-CuO2-BaO-CuO. Bursill et al. reported that HREM images of the termination at the surface are in good agreement with calculated images with the same layer sequence as observed by Zandbergen et al. but with some oxygen deficiency in the two surface layers. In both studies only one or a few surfaces were studied.

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