Copper Gold Flotation
Statistical investigation of flotation parameters for copper …
Several attempts have been done, aiming to recover copper from flotation tailings through mainly acid leaching [17], and froth flotation [4].Using the latter, the recovery of copper through reprocessing of tailings has been studied both in the laboratory and on the pilot scale with an emphasis on the concentration of reagents and a pre-economic analysis [18].
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FLOT-ART: An integrated plant optimization tool for the …
Conventional flotation plant optimization procedures for copper and copper–gold ores have served the industry well over decades. But with the present trend in declining ore …
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The interaction of pH modifiers with kaolinite in copper–gold flotation
The copper grade as a function of the copper recovery, and the gold grade as a function of the gold recovery from the flotation are shown in Fig. 3, Fig. 4, respectively.In Fig. 3, the copper grade–recovery curves from the two baselines were similar except for the first concentrate where the copper recovery was 40% and 75% with lime and soda ash, respectively.
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Separation efficiency improvement of a low grade …
grade copper-gold ores from open pit and underground sources in two parallel processing trains. The copper flotation circuits upgrade copper content by a factor of 80-160 times from feed to a saleable copper concentrate containing approximately 50% of the contained gold in feed (remaining gold is recovered ...
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Effect of clay minerals on pulp rheology and the flotation of copper
A copper–gold ore with low clay content was crushed to a size of −2.36 mm before grinding and flotation.The mineral compositions of this ore analysed by quantitative X-ray Diffraction (XRD) are shown in Table 1.The major gangue minerals are quartz, albite, muscovite and clinochlore with minor kaolinite.
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How to Process Copper Lead Zinc Ore with Gold and Silver by Flotation
The presence of free gold offers opportunity to recover these values in the grinding circuit so that the gold could be amalgamated, and marketed directly to the mint. The ore as mined is very wet and sticky and presents certain handling problems. The Lead Zinc Copper Flotation and Separation Circuit
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Influence of gold mineralogy on its flotation recovery in a …
In the copper rougher stage, reagents were added in three stages and 2.5 min flotation time was given to each stage.Therefore, the total flotation time was 7.5 min.. The copper rougher tails was aerated at a rate of 3 L/min for 5 min before CuSO 4 addition and pyrite rougher flotation. This is done to re-activate pyrite which has been depressed in the high …
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Effects of particle size on flotation performance in the …
The classical first-order model (Model 1) was considered to be most reasonable for fitting the recoveries of copper, gold and lead as a function of flotation time during the …
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The entrainment of kaolinite particles in copper and gold flotation
DOI: 10.1016/J.POWTEC.2015.08.042 Corpus ID: 93384339; The entrainment of kaolinite particles in copper and gold flotation using fresh water and sea water @article{Zhang2015TheEO, title={The entrainment of kaolinite particles in copper and gold flotation using fresh water and sea water}, author={Ming Zhang and Ning Xu and Yongjun …
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Improving fine copper and gold flotation recovery: a plant …
Magnetic conditioning of flotation feed has been shown to improve the flotation of <38 μm paramagnetic minerals consistent with selectively aggregating these paramagnetic …
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Quantifying pyrrhotite superstructures in copper-gold ore flotation …
1. Introduction. Pyrrhotite predominates among iron sulfides in a number of copper–gold sulfide deposits, and its recovery during the flotation process reduces product quality and causes environmental problems such as iron oxide slag generation and sulfur oxide emissions in the downstream smelting process (Allison and O'Connor, 2011).However, the …
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A Review of the Cyanidation Treatment of Copper- Gold …
Gold Cyanidation in Copper Flotation Tailings The production of copper concentrates from copper-gold sulfide minerals by froth flotation generally results in tailings with copper, silver, and gold ...
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Effects of particle size on flotation performance in the separation …
In order to investigate the effect of particle size on the flotation performance in the separation of copper-gold-lead, froth products of various size fractions were collected as a function of flotation time. The optimum dosage of potassium dichromate (K 2 Cr 2 O 7) and sodium diethyldithiocarbamate (DDTC) were determined by flotation conditional tests. Six …
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Flotation and Leaching at Anglo Asian Mining's Gedabek Gold and Copper
This stage produced a copper-gold flotation concentrate, while the flotation tailings flowed on into the agitation leach plant for the recovery of the remaining gold and soluble copper by cyanide leaching. The remainder of the overall process was unaltered. The reconfigured flow sheet is shown in Figure 3.
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Extraction of Gold and Copper from Flotation …
This study presents the novel idea of a cyanide-free leaching method, i.e., glycine-ammonia leaching in the presence of permanganate, to treat a low-grade and copper-bearing gold tailing. Ammonia played a key role as a …
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A Review of the Flotation of Copper Minerals
The recovery of these copper minerals by flotation or hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground mines) is of great commercial importance ...
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Optimization and mechanism of gold-bearing sulfide flotation
In order to overcome the difficulty of extracting gold from gold-bearing sulfide ore by cyanide process, flotation was adopted based on mineralogical analysis. Mineralogy shows that gold particles are of superfine structure and mainly enclosed by sulfide ores. Primary gold-bearing sulfide ore is fine-grained pyrite and arsenopyrite. The paper describes the effects of …
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(PDF) Investigation of flotation parameters for copper recovery …
After plastic flotation, the particle size, the dosages of collectors, frother, and activator were investigated and a copper concentrate assaying 53.5% Cu was obtained at the end of the copper ...
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Technological assessments on recent developments in fine …
The Jameson cell was successfully operated in the cleaning stage to treat the porphyry gold-copper ore in Minera Alumbrera Ltd in Argentina, resulting in gold and copper recoveries (finer than 10 µm) of about 80% and 90%, respectively (Young et al., 2006). The design has also been extensively developed since its first introduction and modern ...
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FLOT-ART: An integrated plant optimization tool for the …
Abstract. Conventional flotation plant optimization procedures for copper and copper-gold ores have served the industry well over decades. But with the present trend in declining ore grades …
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The Genetic Features and Flotation Properties of Porphyry–Copper–Gold …
Russia's largest Malmyzh deposit of porphyry–copper–gold ores is located in Khabarovsk krai, and there are also promising Au and Cu ore occurrences there [1, 2] ().A detailed study of Cu–porphyry type ores will help to expand the copper resource base the advancement of which depends on the creation of an efficient processing technology [].
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Post-regrind selective depression of pyrite in pyritic copper–gold …
Two-stage flotation (copper and pyrite rougher stages) at a p80 of 70 µm indicated that high gold (95.2%) and copper (97.4%) recovery can be achieved, but the levels of pyrite in the concentrate ...
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(PDF) Modified-three-product column (3PC) flotation of copper–gold …
This corresponded to a fresh low-grade copper– gold flotation tailing produced by the plant. Samples varied between 0.15 and 0.4 gt 1 Au and a copper content lower than 0.2% Cu. 2.1.2.3. Reagents. The flotation feed pulp was conditioned with the collectors Aerofloat 208 (sodium diethyl dithiophosphate) at 50 gt 1, AP 323 (isopropyl ethyl ...
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Flotation of Gold and Gold-Bearing Ores
Monothiophosphates are now used widely on copper–gold flotation plants. Mercaptobenzothiazole (MBT, Aeropromoter 404) is a fairly specialized collector (Finkelstein and Poling, 1977) and is the preferred collector for the flotation of gold and gold-carrying pyrite in …
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Interactions of clay minerals in copper–gold flotation: Part 1
The efficiency of copper–gold flotation may be restrained by the changed pulp rheology in the presence of clay minerals. During flotation, pH modifiers (NaOH, lime or sodium carbonate) are normally used to adjust flotation pH in the alkaline range, while introducing cations and anions. Meanwhile, surfactants, collectors and frothers are added ...
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The interaction of clay minerals with gypsum and its effects on copper …
DOI: 10.1016/J.MINENG.2015.03.010 Corpus ID: 93657867; The interaction of clay minerals with gypsum and its effects on copper–gold flotation @article{Cruz2015TheIO, title={The interaction of clay minerals with gypsum and its effects on copper–gold flotation}, author={Nestor Cruz and Yongjun Peng and Elaine M. Wightman and Ning Xu}, journal={Minerals Engineering}, …
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Lime use and functionality in sulphide mineral flotation: A …
The presence of gold in porphyry copper ores may require specific flotation strategies to ensure optimum recovery of both Au and Cu, which may differ according to gold mineralogy. Native gold generally floats well with the collectors used for the Cu sulphides (e.g., xanthates, dithiophosphates).
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Flotation of Gold and Gold-Bearing Ores
Many copper flotation plants around the world, and particularly those in the Americas, have enough gold in the ore to ensure that special attention is given to maximize the recovery of gold into ...
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A Review of the Cyanidation Treatment of Copper-Gold Ores …
The cyanidation of copper flotation tailings containing sulfides for gold recovery is an example of the formation of cyanide complexes with copper and silver during the …
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The effect of sea water on copper and gold flotation in the presence of
In contrast, Zhang et al. [101] found a positive effect of sea water in copper and gold flotation when bentonite was present although bentonite played a detrimental role in copper and gold ...
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