Investigation of Flotation Parameters for Copper Recovery from Enargite and Chalcopyrite Mixed Ore

Haga, Kazutoshi; Tongamp, William; Shibayama, Atsushi

doi:10.2320/matertrans.m2011354

Cited by 30 publications

(8 citation statements)

References 28 publications

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“…However, the mine tailings contained significant amount of sulphide minerals that associated with copper and nickel, PAX collector was suggested for further experiments due to its long chain and ability to promote the recoveries of copper and nickel which are associated with chalcopyrite, pyrrhotite and pentlandite. [17]. Therefore, PAX dosage was selected as 50 g/t in further flotation studies.…”

Section: Effect Of Different Collectorsmentioning

confidence: 99%

“…This observation could be attributed to the association of copper and nickel minerals with pyrrhotite and pyrite which are generally depressed in alkaline condition. On the other hand, under alkaline condition, iron sulfide minerals associated with copper and nickel could oxidized to form a layer of iron oxide or iron hydroxide resulting in an increase in the surface hydrophilicity of the mineral [17]. It was observed that the pH value has shown to have a significant impact on the grade and recovery of copper and nickel from mine tailing.…”

Section: Effect Of Phmentioning

confidence: 99%

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Development of a Combined Flotation and High Pressure Leaching Process for Copper and Nickel Recovery from Mine Tailing

Magwaneng¹,

Altansukh²,

Haga³

et al. 2017

JMMCE

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The present study focused on the re-processing of copper and nickel from mine tailings. In this work, recovery of copper and nickel from mine tailing by combined process of flotation and high pressure oxidative leaching were considered. In the first stage, effects of flotation parameters including collector type, collector dosage, and pH and pulp density were examined. The results showed that over 80% copper recovery was achieved under the optimized flotation conditions while nickel recovery was lower than 30% due to its co-existence with gangue minerals of pyrrhotite, pyrite and other clay minerals. In the second stage, key parameters, particularly concentration of sulfuric acid, temperature, pressure and leaching time were investigated to test the leaching efficiency of copper and nickel from the flotation concentrate with high pressure oxidative leaching (HPOL). A comparison was made between the leaching efficiencies of copper and nickel from flotation concentrates and mine tailing.

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Section: Effect Of Different Collectorsmentioning

confidence: 99%

Section: Effect Of Phmentioning

confidence: 99%

Development of a Combined Flotation and High Pressure Leaching Process for Copper and Nickel Recovery from Mine Tailing

Magwaneng¹,

Altansukh²,

Haga³

et al. 2017

JMMCE

Self Cite

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“…Sulfite and thiosulfates are known as strong reductants. Sodium sulfite (Na 2 SO 3 ) was used as a pyrite depressant in separation of sphalerite and pyrite using flotation [12] and in a complex ore containing enargite and chalcopyrite [13]. Houot and Duhamet [14] reported that sodium sulfide (Na 2 S) depressed the floatability of chalcopyrite in the presence of dialkyl-thionocarbamate as a collector.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sodium Sulfite on Floatability of Chalcopyrite and Molybdenite

et al. 2018

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Sodium hydrogen sulfide (NaHS) is commonly used as a copper depressant in the selective flotation of copper and molybdenum ores. However, the process is facing health and safety issues because NaHS readily yields toxic hydrogen sulfide gas (H 2 S) under acidic conditions. In this study, Na 2 SO 3 was proposed as an alternative copper depressant. The effect of Na 2 SO 3 on the surface wettability and floatability of chalcopyrite and molybdenite-typical copper and molybdenum minerals, respectively-was intensively studied using contact angle measurements and flotation tests. Contact angle readings show that the chalcopyrite surface became hydrophilic after the Na 2 SO 3 treatment. Meanwhile, the molybdenite surface was relatively more hydrophobic compared with that of chalcopyrite after the treatment. Flotation tests using pure minerals of chalcopyrite and molybdenite demonstrate that the floatability of chalcopyrite decreased with increasing concentration of Na 2 SO 3. On the other hand, the floatability of molybdenite gradually increased under similar conditions, suggesting that Na 2 SO 3 might have the potential to be used for selective flotation of chalcopyrite and molybdenite. A possible mechanism is proposed in this study to explain the phenomenon using X-ray photoelectron spectroscopy analysis.

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“…It was found that controlled pulp potential (Eh) flotation is a prospective approach to promote the separation of arsenic-copper minerals from other copper sulphides due to the strong Eh dependence of arsenic mineral flotation (Menacho et al, 1993, Yen and Tajadod, 2000, Kantar, 2002, Guo and Yen, 2005, Senior et al, 2006, Smith and Bruckard, 2007, Bruckard et al, 2010, Haga et al, 2012a, Haga et al, 2012b.…”

Section: List Of Figuresmentioning

confidence: 99%

“…Flotation separation of arsenic-bearing copper sulphides from other copper sulphides has also been studied since these minerals have similar flotation properties to copper sulphide minerals. Research on separation of arsenic-bearing copper sulphides from other copper sulphides, by flotation, indicated that Eh control has shown promising results for eliminating arsenic from other copper sulphides, due to the strong Eh dependence of arsenic mineral flotation (Menacho et al, 1993, Yen and Tajadod, 2000, Kantar, 2002, Guo and Yen, 2005, Senior et al, 2006, Smith and Bruckard, 2007, Bruckard et al, 2010, Haga et al, 2012a, Haga et al, 2012b, Ruiz et al, 2013. Menacho et al (1993) were the first to demonstrate that the separation of enargite from chalcopyriteenargite ore is possible by pulp potential control.…”

Section: Selective Flotation Using Pulp Potential (E H ) Controlmentioning

confidence: 99%

Selective flotation of enargite from copper sulphides in complex ore systems

Tayebi-Khorami¹

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Recent research has demonstrated promising results showing the possibility of separating arseniccopper sulphides from other copper minerals by controlling the potential of the flotation pulp. Most of these studies were conducted on single mineral systems, and the selective removal of arseniccopper minerals in real ore systems is not well understood. In real ore systems, the efficiency of the separation strongly depends on the mineralogical characteristics of the ore samples. This study seeks to understand the effect of ore mineralogy on the floatability of enargite in a complex ore system, under a controlled potential flotation environment.A composite of several high arsenic-containing drill core intersections for the high arsenic sample (HAS) and a composite of some low arsenic-containing drill core intersections for the low arsenic sample (LAS) were selected from the Tampakan copper-gold deposit in the Philippines, providing a range of arsenic levels. Arsenic in the HAS sample (enargite) was practically twice that for the LAS sample. The non-enargite copper minerals (NECu) were mostly chalcopyrite and bornite in both samples.Comprehensive size-by-size, chemical and mineralogical analyses were performed on both ore samples. It was observed that the two ore samples had similar mineralogical characteristics in terms of mineral content and liberation distribution, however there are some differences in the proportions of minerals. It was also observed that NECu minerals were mostly distributed to the coarser size fractions, while the proportion of enargite in the finer size fractions was higher than for NECu. The mineral grain size data showed that enargite had the finest grain size distribution compared to other copper minerals.The selective separation of enargite from NECu minerals in a rougher flotation system under controlled pulp potential was investigated for both samples. It was observed that it is possible to selectively separate enargite from other copper minerals after reducing the pulp potential to about -200 mV SHE at pH 11 in the LAS sample. However, no separation between enargite and NECu minerals was observed at a reducing potential for the HAS sample, and enargite did not float very well for this sample as the Eh was changed.The Particle Kinetic Model was used to predict the flotation response of enargite and NECu in the HAS sample based on mineral flotation rates derived from the LAS sample and the mineralogy of the HAS sample. It was observed that the predicted values of enargite recoveries were higher in the HAS sample when compared with the results of actual flotation tests. As the mineralogy of the two ore samples was similar in terms of mineralogical and liberation characteristics, the only reason for the iii poor prediction of the model for the HAS sample was due to the change in the flotation pulp conditions for the HAS sample. There were two possible reasons for this change in the flotation response of the HAS sample. One was the higher levels of pyrite present in the HAS sample com...

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Investigation of Flotation Parameters for Copper Recovery from Enargite and Chalcopyrite Mixed Ore

Cited by 30 publications

References 28 publications

Development of a Combined Flotation and High Pressure Leaching Process for Copper and Nickel Recovery from Mine Tailing

Development of a Combined Flotation and High Pressure Leaching Process for Copper and Nickel Recovery from Mine Tailing

Effect of Sodium Sulfite on Floatability of Chalcopyrite and Molybdenite

Selective flotation of enargite from copper sulphides in complex ore systems

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