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 …

The main Rheology studies reported to date are systematised and classified in five topics in this paper: i) rheology of clayey pulps; ii) Reagents specific reagents for dispersing …

This study addresses a widespread problem confronting the mining industry: the deleterious effect of clay minerals in flotation. This problem is seemingly exacerbated by the presence of iron contamination from grinding media. The interaction of clay minerals and grinding media in copper and gold flotation was investigated in this study. A low-clay ore and a …

The collectorless flotation of copper sulfide minerals is attributed to polysulfides on the surface as a result of mild surface oxidation (Lekki and Drzymala, 1990, Ekmekçi and Demirel, 1997). Metal hydroxides on the mineral surface decrease the flotation of copper sulfide minerals even in the presence of collector (Senior and …

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. …

A common method in plants to reduce an unwanted effect of clay minerals prior to flotation is. prevention of fine particles e ntrance into the flotati on process and washing of ores. The plants ...

minerals Article Response Surface Methodology for Copper Flotation Optimization in Saline Systems María P. Arancibia-Bravo 1,2,*, Freddy A. Lucay 3, Felipe D. Sepúlveda 4, Lorena Cortés 5 and Luís A. Cisternas 5 1 Departamento de Química, Universidad ólica del Norte, Avenida Angamos 0610, Antofagasta 1240000, Chile

Section snippets Clay minerals: Synthesis, treatment, and characterization. The Na-2-mica was synthesized from kaolinite, MgCl 2, and NaF as starting materials, and SWy-2 montmorillonite (Source Clays Repository, Purdue University, West Lafayette, IN) was treated to dissolve any carbonate impurities (Stuckey et al., 2008).The cation …

EFFECTS OF CLAY MINERALS ON VISCOSITY AND COPPER ENTRAINMENT LOSSES IN SMELTING SLAGS. Materials Science, Engineering. 2017. Hydrous aluminium phyllosilicate group minerals, often broadly classified as 'clays', exist as common gangue components in most copper porphyritic ore deposits. In the case of …

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 …

Unfortunately no studies were found to evaluate copper minerals; however, it is worth mentioning the work of Liu and Peng (2015), who assessed the flotation of coal minerals with high clay content, both in freshwater and in saline water (processed water). The dispersing agent (lignosulfonate) showed results that much depending on its …

Based on the experimental results, flotation processes carried out on raw feed allowed the recovery of the majority of REE minerals (>50%), but the process was unselective, where clay and silicate ...

The flotation test results show that Fe3+ can significantly improve the flotation behavior of minerals when NaOL is used as a collector under natural pH, and the highest recovery rates of feldspar ...

character of this mica mineral [13]. The depressing effect of clay minerals on the flotation of chalcopyrite and molybdenite becomes stronger in the presence of most of the cations in seawater [7–9]. These cations induce a certain degree of hydrophilicity on these minerals, which leads to low recoveries at pH > 9.5 even in the absence of ...

The effect of clay minerals in flotation and treatment methods are summarized, which is helpful to provide technical reference for the research of flotation technology with high clay content, and to put forward the future research content and direction in this field. ... Peng Y, Farrokhpay S, et al. Interactions of clay minerals in …

Acid Cationic Flotation Method. The acid cationic method of mica flotation provides an efficient method for recovery of coarse mica. Particles as coarse as 14 mesh may be floated by the process. However, the ore must be completely deslimed at 150 to 200 mesh, which results in considerable loss of fine mica.

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;

Abstract. It has been well acknowledged that clay minerals could impose deleterious effects on flotation performance by affecting pulp rheology. To date, it is still not clear regarding the role of clay minerals in influencing froth rheology which has been increasingly recognized as an important froth property in determining flotation …

The possible reasons for such decreases in flotation rate constant were reported as the occurrence of slime coating or physical adsorption of clay mineral particles onto the copper-containing ...

minerals by flotation. The increasing complexity of ore deposits, declining ore grades and higher global demand for copper has resulted in increased ore processing by flotation …

The clay minerals that resulted from alteration, along with copper sulfide minerals, are the major mineral phases that are fed to the copper concentrator plant (Shahabpoor, 1982). In the concentrator plant, after three stages of crushing, the ore is fed to ball mills in closed circuit with cyclones to produce 70% of the product finer than 75 ...

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....

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. …

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 ...

Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry. In this paper, the surface properties of copper oxide minerals and their effects on the mineral …

Effect of clay minerals on copper flotation. The effects of various amounts of bentonite and kaolin on copper flotation are shown in Fig. 2(a) and (b), respectively. Flotation tests were performed with Telfer clean ore as a laboratory baseline in the absence of clay samples. The presence of either bentonite or kaolin affected copper …

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

Semantic Scholar extracted view of "The entrainment of kaolinite particles in copper and gold flotation using fresh water and sea water" by Ming Zhang et al. ... Mitigating the negative effects of clay minerals on gold flotation by a lignosulfonate-based biopolymer. ... a mixed-layer mineral (mica and montmorillonite) " illite", ...

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. …

1. Introduction. Minerals are non-renewable natural resources that are the primary sources for inorganic materials as well as essential components in a wide range of biological and technological applications such as drug and gene delivery [1], pharmaceutics and cosmetics [2], electronics [3], catalysis [4], and water treatment [5].Despite the lack …