Flotation of Copper Oxide Minerals by Mixed Collectors

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1073-1076.2102 ◽

2014 ◽

Vol 1073-1076 ◽

pp. 2102-2105

Author(s):

Jing Qi ◽

Lin Yang

Keyword(s):

Copper Oxide ◽

Copper Oxides ◽

Copper Recovery ◽

Oxide Minerals

In this study, the effects of important factors on malachite exploited from Tibet are investigated. Dosages of activating agents, depressants and collectors are essential to the effective recovery of copper in the flotation. The mixed collector ratio of SIBX: Armac C was varied as 0:1, 1:1, 1:2, 1:3, and 1:4. This investigation showed that using Armac C in conjunction with traditional SIBX collectors can successfully simultaneously recover copper oxides by flotation. The rougher scavenger copper recovery was as high as 85.2%.

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Flotation Responce of the Refractory Yangla Copper Oxide Ores with Hydroxamate Collectors

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.803.131 ◽

2013 ◽

Vol 803 ◽

pp. 131-136 ◽

Cited By ~ 1

Author(s):

Fei Xiong ◽

Yan Jun Li ◽

Zhong Hui Zhang ◽

Yao Zhong Lan

Keyword(s):

Copper Oxide ◽

Yunnan Province ◽

Copper Recovery ◽

Refractory Oxide ◽

Bench Scale ◽

Oxide Minerals ◽

Concentrate Grade ◽

Copper Ores ◽

Chelating Reagent

To establish the flotation response and suitability of the collectors, series of bench-scale flotation tests are conducted for the refractory oxide copper ores obtained from Yangla Mine in Yunnan province. A simple xanthate (PAX) is used as the sulphide collector and a chelating reagent of hydroxamate AM28 as the oxide collector. It is found and confirmed by mineralogical examination that AM28 successfully recovered all the discrete copper oxide minerals from the Yangla ore. The flotation tests show that the overall copper recovery is affected due to the minerals copper associated with goethite which is not amenable to flotation. The average copper recovery from the rougher tests is 38.4% with a concentrate grade of 3.19%. The additional cleaning flotation can increase the Cu grade in concentrate further.

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Experimental Study of Floatation on Non-Independent Copper Oxide Ore from Jilin Province in China

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.581-582.851 ◽

2012 ◽

Vol 581-582 ◽

pp. 851-855

Author(s):

Rong Dong Deng ◽

Quan Jun Liu ◽

Xiao Feng Yang ◽

Ting Hu ◽

Feng Hong Ye

Keyword(s):

Copper Oxide ◽

Copper Sulfide ◽

Jilin Province ◽

High Grade ◽

High Recovery ◽

Copper Ore ◽

Sulfide Ore ◽

Mineralogical Study ◽

Oxide Minerals ◽

Copper Sulfide Ore

Through the processing of mineralogical study on a copper ore from Jilin province in China, it found that the copper exist mostly with the form of chalcopyrite, and others exist with the form of copper oxide minerals which with complex ingredient. The copper oxide minerals are due to the altered of the edge of chalcopyrite, and have not formed the independent copper oxide ore. It belongs to unconventional hard-to-beneficiate copper ore. Coarse grinding fineness and bulk floatation was used to recover the copper oxide ore and copper sulfide ore by using amino double phosphoric acid and butylamine dithiophosphate as the collector. This process was similar to the carrier flotation and achieved an effective processing of the copper oxide ore and obtained a high-grade copper concentrate assaying 15.8% with a high recovery of 82.4%.

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H<sub>2</sub>S dosimeter with controllable percolation threshold based on semi-conducting copper oxide thin films

Journal of Sensors and Sensor Systems ◽

10.5194/jsss-6-163-2017 ◽

2017 ◽

Vol 6 (1) ◽

pp. 163-170 ◽

Cited By ~ 4

Author(s):

Christoph Seitz ◽

Giuliana Beck ◽

Jörg Hennemann ◽

Christian Kandzia ◽

Karl P. Hering ◽

...

Keyword(s):

Thin Films ◽

Copper Oxide ◽

Percolation Threshold ◽

Structural Parameters ◽

Electrical Conductance ◽

Copper Oxides ◽

Island Growth ◽

Switching Behaviour ◽

The Impact ◽

H2s Detection

Abstract. Copper oxides, such as CuO and Cu2O, are promising materials for H2S detection because of the reversible reaction with H2S to copper sulfides (CuS, Cu2S). Along with the phase change, the electrical conductance increases by several orders of magnitude. On CuOx films the H2S reaction causes the formation of statistically distributed CuxS islands. Continuous exposition to H2S leads to island growth and eventually to the formation of an electrical highly conductive path traversing the entire system: the so-called percolation path. The associated CuOx ∕ CuxS conversion ratio is referred to as the percolation threshold. This pronounced threshold causes a gas concentration dependent switch-like behaviour of the film conductance. However, to utilize this effect for the preparation of CuO-based H2S sensors, a profound understanding of the operational and morphological parameters influencing the CuS path evolution is needed.Thus, this article is focused on basic features of H2S detection by copper oxide films and the influence of structural parameters on the percolation threshold and switching behaviour. In particular, two important factors, namely the stoichiometry of copper oxides (CuO, Cu2O and Cu4O3) and surface morphology, are investigated in detail. CuOx thin films were synthesized by a radio frequency magnetron sputtering process which allows modification of these parameters. It could be shown that, for instance, the impact on the switching behaviour is dominated by morphology rather than stoichiometry of copper oxide.

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