Effect of pyrite textures and composition on flotation …
Different pyrite textures may influence flotation by altering the electrochemical properties of pyrite and the ways it interacts with the pulp, or they can introduce naturally floatable species within pyrite grains.
Minerals | Free Full-Text | Carrier Flotation Using Coarse Pyrite …
Carrier flotation is a technique that can recover fine particles by using coarse carrier particles during the flotation process. In heterogeneous carrier flotation, coarse mineral particles of different minerals are used as carriers to recover fine mineral particles. By using Cu2+-treated pyrite particles as carriers, fine chalcopyrite particles recovery …
Mineralogical characteristics and recovery process optimization …
Pyrite and arsenopyrite are the two main gold-bearing minerals in the ALRG gold ore. The content of pyrite is 3.47 %, which is high‑sulfur lean‑iron pyrite in this gold ore, and the disseminated particle size is in the range of 0.01–0.2 mm. Arsenopyrite is the main arsenic-bearing mineral with a content of 0.45 %.
Flotation Desulfurization of Acidified High-Sulfur Bauxite …
Flotation desulfurization can remove the sulphur from the bauxite before entering the Bayer process (alumina refining process), and has been proven to be an efficienct, flexible, economic method [13, 14]. As the main sulfur mineral in high-sulfur bauxite, pyrite can be flotated using a xanthate collector under normal conditions . …
Pyrite Tailings Recovery by Flotation
Pyrite has long been used as a source of sulphur, and its recovery as a by-product from the flotation of certain base metal ores is a well established practice. Large tonnages of mill tailings which have accumulated as a result of various milling operations frequently contain significant amounts of pyrite. In many instances these tailings can be …
A Novel Chelating Collector with Di-minerophilic Group 5 …
The article presents the synthesis and application of a novel collector, 5-methyl butylxanthate-1,2,4-triazole-3-thione (MBuXTT), for chalcopyrite flotation separation from pyrite. Various interfaces and surface characterization analysis methods were employed to study the flotation separation mechanism. The micro-flotation and contact …
Optimization of a Copper/Molybdenum …
Abstract. A study to determine methods to hinder the flotation of pyrite, other than the. specific use of lime, in rougher flotation was conducted. Specifically, the goal was to. …
Effect of Physisorption of Collecting Agent on Flotation of Pyrite …
Abstract Flotation of pyrite is examined as function of pH and ferrous ion concentration. To explain depression of pyrite flotation in the neutral pH range and at high concentration of ferrous ions, the mechanism of physisorption of a collecting agent is used. It is experimentally determined that interaction products of xanthate and ferrous ions …
Flotation of Pyrite
Flotation of Pyrite. Table of Contents. This paper is a record of the first of a series of tests on sulfide minerals to be made by the metallurgical department of the University of California. The purpose of …
Effect of pyrite textures and composition on flotation …
Pyrite flotation recovery as a function of solution potential at different pH's (Tao et al., 2018). The main factor affecting the electrochemical processes is the electrochemical potential at the mineral and solution interface (Hu et al., 2009). This potential is determined by the presence of oxidizing and reducing species in the solution.
Biodegradable acids for pyrite depression and green flotation
However, the selective separation of pyrite in flotation systems is challenging because of its unintended activation. The activation can occur when metallic cations, more specifically Cu 2+ and Pb 2+, are in the flotation solution (come from associated copper and lead sulfides) [Citation 69–72, Citation 36, Citation 37, Citation …
Pyrite Depression in Copper Flotation
The Pyrite Depression in a Copper Only Flotation circuit is simple enough. If your froth flotation system only tries to recover chalcopyrite-copper, you need to bring the plant's pH up to the other side (right side) of the PYRITE curve. The more flotation collector you have on, the higher you will need to increase that pH for effective pyrite ...
Flotation separation of pyrite from arsenopyrite by surface …
Natural arsenopyrite and pyrite samples used in this study were obtained from Yunnan Province, China. The elemental compositions of mineral samples are shown in Table 1.High-purity samples were manually selected and ground to −75 μm, of which the −75 + 38 μm particles were used for flotation tests, plasma modification pulp chemistry …
A study on the effect of active pyrite on flotation of …
Keywords: Active pyrite, Chalcopyrite, Collector, Flotation, Optimization 1. Introduction Chalcopyrite is often associated with pyrite which is the most undesirable mineral with the same floatability (Chandraprabha et al., 2004). The …
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 …
Pyrite Flotation Separation and Encapsulation: A …
Pyrite flotation separation and encapsulation in tailings dams is proposed as a viable way to chemically stabilize tailings. Characterization of potential acid mine …
Enhanced separation of pyrite from high-sulfur bauxite …
Flotation results showed that the selective flotation of pyrite from galena can be achieved under the preferred reagent scheme, i.e., 400 g/t chitosan (10 kDa), 1600 g/t ethyl xanthate, and 100 g ...
Improving Flotation Separation of Mg (OH)
Flotation separation of chalcopyrite/pyrite mixtures under Mg(OH) 2 depression effectively limits pyrite entrainment into Cu concentrates. However, the Cu concentrate is still negatively affected by the low selectivity of depression by Mg(OH) 2 and unavoidable floatability activation of pyrite by surface Cu contamination via galvanic …
Application of reverse pyrite flotation at Kidd Creek Mines Ltd.
KEYWORDS Reverse pyrite flotation; pilot plant; grade/recovery trade-off; relative efficiency; isoefficiency curves; performance curves; optimization. INTRODUCTION The Kidd Creek Concentrator is located twenty-six kilometers east of Timmins, Ontario, within a metallurgical complex housing a 100,000 tpy copper plant and …
Inquire into Co-doped pyrite crystal structure modifications …
The convergence criteria for structure optimization and energy calculation were as follows: (a) an energy tolerance of 2 × 10 −5 eV/atom, (b) a maximum force tolerance of 0.05 eV/ Å, and(c) ... The flotation behavior of pyrite and Co-doped pyrite was clearly explained through the principle of flotation coordination chemistry. 4.
Optimization of a Copper/Molybdenum Flotation …
Optimization of a Copper/Molybdenum Flotation Circuit by Depressing Pyrite from the Rougher Flotation Stage Using Different Scheme of Reagents A thesis submitted in partial fulfillment of the requirements for the degree of Master Of Science in Metallurgical Engineering by Wander A. Valderrama Dr. Carl C. Nesbitt/Thesis Advisor May 2020
FLOT-ART: An integrated plant optimization tool for the flotation …
Flotation optimization of complex ores often requires a better understanding of the size distribution of different minerals and therefore P 80 alone ... Fig. 7 demonstrates that the problems with high lime addition to depress pyrite in copper or copper–gold flotation. High lime addition often requires a higher dosage of collector and/or a ...
Advances in depressants used for pyrite flotation …
Highly efficient pyrite depressants can be selectively adsorbed on the surface of pyrite to improve its hydrophilicity, thereby increasing the flotation …
Optimization of physicochemical parameters of pyrite flotation …
Tailings issued from polymetallic ore flotation of Chaabat el-Hamra mine contain sulfides such as Galena (PbS), Pyrite (FeS2) and Chalcopyrite (CuFeS2). They present environmental threats such as the acid mine drainage. Chemical analysis showed that the major element of these tailings is Pyrite. The processing of the latter eliminates …
Pyrite recovery mechanisms in rougher flotation circuits
Bubble load and top of froth measurements per size class were carried out in a rougher flotation circuit containing sulphide copper minerals and pyrite. This circuit consists of four parallel banks of seven 130 m 3 mechanical cells. Results of testing the first rougher cell (approximately 69% Cu recovery), showed that 40–60% of pyrite in the ...
Enhance flotation separation of arsenopyrite and pyrite by …
DOI: 10.1016/J.APSUSC.2019.02.172 Corpus ID: 104388733; Enhance flotation separation of arsenopyrite and pyrite by low-temperature oxygen plasma surface modification @article{Ran2019EnhanceFS, title={Enhance flotation separation of arsenopyrite and pyrite by low-temperature oxygen plasma surface modification}, author={Jin Ran and …
Biodegradable acids for pyrite depression and green …
Due to the natural hydrophobicity of pyrite particles through flotation separation and its high affinity to xanthates (the most common collectors for flotation of …
Evaluation of Functionalized Chitosan Polymers for …
Optimization studies indicated that the selective separation of pyrite from galena and chalcopyrite was optimal when using 85 g/t of CS-PAM synthesized from …
Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical …
This manuscript discusses the main chemical and physical mechanisms involved in the phenomena of reagent adsorption on the mineral surface, the impact of pH and type of alkalizing agent, and the …
Minerals | Free Full-Text | Selective Flotation of Pyrite from …
Pyrite is a major gangue mineral associated with galena and other valuable minerals, and it is necessary to selectively remove pyrite to upgrade the lead concentrate by froth flotation. In this study, the flotation experiments of a single mineral and mixed minerals were performed using chitosan with different molecular weights (MW = 2−3, …
