Mica And Clay Minerals In Copper Flotation

The nature of a clay mineral in aqueous solution is related to its crystal structure. Most clay minerals are phyllosilicates which are made up of silicon‑oxygen tetrahedrons (T) and aluminum‑oxygen octahedrons (O) in certain proportions [9].Montmorillonite (T-O-T), kaolinite (T-O) and talc (T-O-T) are common clay minerals present in froth flotation, as shown in Fig. 1.

Behavior of talc and mica in copper ore flotation. Appl. Clay Sci. (2018) ... in a mineral flotation froth plays a critical role. While they reduce the grade of the concentrate, they are also an important influence on the dynamical structure of the froth and its ability to transport value particles into the launder for ultimate recovery ...

Talc and mica are major gangue minerals in many base metal ores including sulfide ores. Talc is a naturally hydrophobic mineral, and therefore it is easily floatable. There have been many …

Based on the analysis of the sample, most of gangues are clay, feldspar and mica, which may easy to over-grind and deteriorate the flotation process either on reagents consumption or ... silicate in copper oxide minerals flotation is well established, one of the main problems in phosphate ore in China is high-consumption of sodium sulfide ...

The adverse effects of clay minerals in flotation have been attributed to slime coating (Edwards et al., ... Behavior of talc and mica in copper ore flotation. Article. Feb 2018; APPL CLAY SCI;

2.5 The use of depressants and clay binders In flotation, sodium silicate (Na 2SiO 3), called water glass, has fairly common use to depress silicate and carbonate minerals present as gangue minerals. Also, it is an effective dispersant.

The copper ore flotation rate constants were 0.51 s −1 and 0.49 s −1 in the presence of 15 wt.% of kaolinite and 15 wt.% of illite, respectively, and 0.33 s −1 in the presence 15 wt.% of montmorillonite, as compared with the …

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 Peng}, journal={Powder Technology}, …

In this study, the effect of adding a guar gum and potassium amyl xanthate sequence to the flotation separation of pyrite and talc was investigated by micro-flotation tests, …

A comparison between the copper flotation recovery of a high clay ore (from ndida) in laboratory results and plant scale (Bulatovic, Wyslouzil and Kant, 1998) In order to improve flotation performance, having reliable knowledge of the effect of clay minerals on froth stability, and understanding the mechanisms involved is essential ...

Due to this, the scientific interest in studying the effect and mechanisms of Copper action of clay minerals in the flotation process has increased, which has resulted in a better understanding of the Flotation physicochemical …

In the present review, we analyse the principal researches developed to date, which deals with the impact of clay minerals on the flotation of copper ores. Particular …

Some strategies to reduce the negative effect of clay minerals on the The presence of clay minerals leads to rheological challenges, which process of flotation are the use of a variety of reagents such as rheology are generally a significant problem in flotation operations (Schubert, 2008; Ndlovu et al., 2011; Farrokhpay, 2012).

Clay minerals can be detrimental to mineral flotation and high viscosity and high particle entrainment promoted by clay minerals are among the main contributing factors (Forbes et al., 2014, Jorjani et al., 2011, Wang and Peng, 2014, Wei et al., 2013, Zhang and Peng, 2015).Incremental reagent consumption has also been suggested as a factor affecting flotation …

Behavior of talc and mica in copper ore flotation ... Keywords: Flotation Talc Muscovite Phyllosilicate Clay Rheology Froth stability ABSTRACT Talc and mica are major gangue minerals in many base metal ores including sulfide ores. Talc is a naturally ... presence of these clay gangue minerals. The critical concentration at

1. Introduction. The pre-enrichment of metal extraction in sulfide minerals is usually carried out by flotation [].The collector is used to increase the hydrophobicity of sulfide minerals, while the inhibitor improves the hydrophilicity of gangue minerals, and then the flotation method is used to separate sulfide minerals and gangue minerals based on the surface wettability …

The presence of clay leads to low recoveries in the process of flotation of copper ores which is also reflected in a decrease of the concentrates grades.

In low-grade and complex copper ores, the specific gangue minerals present can vary depending on the ore deposit, and silicate minerals such as quartz, feldspar, and clay minerals are the most common [3, 8].Recently, amorphous silica, a non-crystalline form of silica with a relatively low particle density and complicated rheological properties, has garnered …

Effect of clay minerals concentration on copper recovery (empty symbols), and apparent viscosity (solid points) of flotation pulp: snobrite (circle), kaolinite (triangle), bentonite (square) …

Clay minerals impose deleterious impacts on mineral processing.In this study, bentonite consisting primarily of montmorillonite and kaolin consisting primarily of kaolinite, were used to characterise the effect of clay minerals on copper flotation.It was found that bentonite and kaolin caused different issues in the process of flotation. Increasing the proportion of bentonite …

Copper is recovered from these minerals mainly through flotation, followed by pyrometallurgical processing, representing 80–85% of world's copper production [8,9]. However, pyrometallurgical treatment is difficult and …

Porphyry copper–gold ores contain carbonates and clay minerals (Agorhom et al., 2012b, Allan and Woodcock, 2001, Bulatovic, 1997), which are detrimental to both gold and copper sulphide flotation. Gangue minerals in copper–gold ores have two negative effects on the flotation recovery process; (i)

This mechanism is in good agreement with the results in other reports [43,57,77]. 3.2 Sulfide minerals The flotation of sulfide minerals has been a research hotspot for more than a century. It is widely known that most of the sulfide minerals, like pyrite, chalcopyrite, and galena, are readily floated in the presence of thiol collectors [78].

In the part I companion of this paper (Bhambhani et al., 2023a), flotation tests with a commercial copper sulfide ore spiked with various amounts and sizes of silica or mica (added gangue) revealed interesting performance differences related to gangue particle size and shape. Spiked ore flotation results were interpreted as evidence for an ...

High concentrations of different ions, as in seawater, induce important changes in the surface properties of copper molybdenum sulfides, strongly affecting flotation efficiency [5,6,7,8], and intervene in the interactions between copper sulfides and clay minerals. The depressant effect of clay minerals on chalcopyrite and molybdenite flotation ...

The general circuit for commercial separation of feldspar consists of three sequential stages of flotation, all of which are carried out in an acid medium. Usually, before flotation, the feed is deslimed, removing any fine clay minerals present. In the first flotation stage, mica is removed with an amine collector.

In this study the authors have focused on the effects of the global morphological parameters (i.e. size and shape) of hydrophilic gangue minerals in a typical commercial-grade copper sulfide ore. Muscovite mica was chosen as representative of intermediate aspect-ratio, plate-like minerals; and silica was chosen as representative of near-unit ...

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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. ... The carbonaceous types also contain an appreciable amount of clay slime minerals. iii. Copper oxide mixed ore (Type 2) – in contrast to Type 1 ...

Phyllosilicate minerals are common hydrophobic minerals present as impurities in complex sulfide ores and include aluminium silicate minerals such as pyrophyllite, kaolinite, muscovite and chlorite, as well as the corresponding magnesium silicate minerals, talc, serpentine and phlogopite (Du & Miller, Reference Du and Miller 2007).Theoretically, pyrophyllite (Al 4 Si 8 O …