sulphide ore complex

In this study beneficiation of a sulphide ore from the Gumushane-Black Sea Region of Turkey was investigated. Detailed flotation studies were carried out with the ore sample which contained 2.95% ...

Sulfide minerals are compounds in which sulfur is combined as an anion with a metal (or semi-metal) cation or cations. The definition is commonly widened to include minerals in which the anion is As or Sb, sometimes together with S, and to include Se and Te minerals. The sulfosalts are a special group of the sulfide minerals that have a …

The sulphidation of a nickeliferous lateritic ore was studied at temperatures between 450 and 1100 °C and for sulphur additions of 25–1000 kg of sulphur per tonne of ore. The experiments demonstrated that the nickel could be selectively sulphidized to form a nickel–iron sulphide. It was found that both the grade and the sulphidation degree ...

This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of sulphide minerals both in the absence and presence of thiol collectors are discussed in relation to their crystal structure, surface chemistry and electrochemical characteristics.

The processing of complex sulphide ores by the sequential method of flotation requires maximal selectivity. In particular, the entrainment of galena into the chalcopyrite concentrate obtained with a dialkylthionocarbamate-type collector must be minimized. ... In this study, a new highly efficient copper-lead sulfide ore separation …

Complex of Jashpur, Bastar Craton, Central India: Evidences ... These sulphide/Ni-Cu-sulphide and oxide ore minerals are found to be associated with the clinopyroxene, amphibole, plagioclase ...

Pyritic complex sulphide ore sometimes behaves like elemental sulphur in flotation. Such troublesome behaviour is often experienced for flotation systems in which the natural pH of the. pulp is ...

The Offset Dykes of the Sudbury Igneous Complex (SIC) formed from impact melt as a part of the ~1850 Ma meteorite impact event (Krogh et al., 1984). ... Magmatic Ni-Cu sulphide ore forms only when ...

Although over 20 minerals have been identified in these complex sulphide ores having primarily nickel, copper, and iron metals in a variety of stochiometries, …

Metallic hydroxides released by the ore at more strongly, but the mechanism may well be similar. Improving flotation selectivity in complex sulphide ore 355 ACKNOWLEDGEMENTS The authors wish to acknowledge the financial support provided by the MMinist6re de la Recherche" of France (Phygis program) that allow us to use …

The pH, Eh (pulp potential), and dissolved oxygen (DO) were measured before and after grinding of the complex sulphide ore. The Eh was measured at room temperature in all experiments using a platinum electrode and KCl (3 mol/l) reference electrode and expressed relative to the standard hydrogen electrode, SHE. The pH was …

2.2. Dissolving solutions. The dissolving solutions included a ferrous ion (Fe 2+) reductive medium for the polymetallic nodule leaching individually, a ferric ion (Fe 3+) oxidative medium for the low-grade nickel sulfide ore alone dissolution, and a dilute sulphuric acid solution for the two ores coupled leaching.The reduction medium of …

DOI: 10.1016/0301-7516(95)00095-X Corpus ID: 96119395; Flotation of a complex sulphide ore. II. : Influence of grinding environments on Cu/Fe sulphide selectivity and pulp chemistry

Complex sulphide ores represent considerable reserves and resources in base non ferrous metals, in precious metals, and in sulphur. Some of their essential …

The results of this study have shown that sulfuric acid leaching in the presence of hydrogen peroxide is an effective route for copper and zinc recovery from Nigerian complex sulfide ore. ...

Complex sulphide ore samples were obtained from the Moinho deposit (Aljustrel mine), which is a volcanic massive sulphide complex ore found in southern Portugal. R. Sousa, A. Futuro, C. Setas ...

The methodology is based on derivation of an ore specific calibration curve and prediction of flotation performance of different ore types from the same deposit by using the calibration curve. The results of the test works performed using a complex Cu–Zn sulphide ore from Çayeli Bakır İşletmeleri A.Ş., Turkey are discussed in this paper.

Metal sulfides are usually semiconductor and cause electrochemical reactions. This phenomenon plays an important role in sulfide flotation. Pyrite as the most abundant sulfide mineral is often associated with valuable sulfide minerals, coal and gold. It is very important to study its electrochemical behavior in the flotation process.

Abstract. Problems arising during flotation of complex Cu-Pb-Zn sulphide ores are in general of geological origin. The features of these ores are reviewed, stressing that mineralogical studies extending to process mineralogy are prerequisite for a consistent flotation process. Some examples affecting flotation are given.

The work reports the direct bioleaching of zinc sourced from Abakaliki-Ishiagwu complex zinc sulphide ore deposit. The sphalerite ore is predominant in Zn with other associated metals Pb, Cu, Fe ...

Abstract. Kinetic flotation models were applied to data from tests with reactive gases (hydrogen and sulphur dioxide) on a complex sulphide ore. The models were evaluated by statistical techniques, after non-linear regression on the model parameters. It is found that a first order model with rectangular distribution of floatability fits the ...

ore, or to the revenue that would be obtained from the processing of a simple ore having the same grade. Figure 1, from Barbery et al (2), indicates a typical decision tree that …

Complex sulfide ores are fine-grained, intimate associations of chalcopyrite (CuFeS 2), sphalerite (ZnS) and galena (PbS), disseminated in dominant pyrite, and containing valuable amounts of minor elements. Generally, collectors employed for sulfide recovery …

Low grade copper sulfide ore samples. Low grade copper sulfide ores are obtained from a copper mine, Fujian Province, China, which contain 0.04% free copper oxide, 0.06% primary copper sulfide, 0.64% secondary copper sulfide and 0.01% combined copper oxide. ... Electroleaching kinetics of molybdenite concentrate of …

Selective flotation of complex sulphide ores containing Cu-Pb-Zn-Fe sulphide minerals is very difficult. Oxidation is one of the most important factors. The oxidation of complex sulphide ore is found to be enhanced by the presence of pyrite. Pyritic complex sulphide ore sometimes behaves like elemental sulphur in flotation.

Much of the world's supply of battery metals and platinum group elements (PGE) comes from sulphide ore bodies formed in ancient sub-volcanic magma plumbing systems. Research on magmatic sulphide ...

Flotation of a complex sulphide ore 1047 Pulp potential did not vary very much with aeration and oxygenation but nitrogenation caused lower pulp potential. Copper and zinc were both depressed with high NaSH addition. When H202 was added the copper grade increased quite significantly, from 6.5% to 11% with 95% recovery due to decrease …

The present work deals with pilot plant investigations on the influence of conventional- and autogenous grinding methods in the flotation of a complex sulphide ore. The study includes the investigation of the particle size and shape analysis and the pulp chemical measurements — Eh, pH, O 2, concentration of cations and anions, at several ...