Synergistic interactions between reagents in sulphide ...
· A case study reporting synergistic interactions between thiol collectors in the flotation of pyrite at pH = 4 is included. The use of Potassium n-butyl xanthate (PNBX) and a dithiocarbamate type collector (DTC) were tested both as pure collectors and as components in a collector mixture.
Mineralogical Prediction of Flotation Performance for a ...
The mining operation from which the samples originate does not currently process sulphide ore and thus a basic flotation procedure was designed to evaluate the flotation performance. An overview of the timings used in the flotation procedure can be found in Table 1. For the collector a dosage of 30 g/t at a concentration of 1% was used and a ...
(PDF) Electrochemical properties of pyrite, pyrrhotite ...
Therefore, it is conditions in the flotation of chalcopyrite and its separation from pyrite International Journal of Mineral Processing, vol. 69, 2003a. pp. 87–100. necessary that the flotation process is conducted during the preliminary stages of oxidation.
(PDF) A study on selective flotation in low and high ...
A study on selective flotation in low and high pyritic copper sulphide ores. Ahmad Hassanzadeh. mohammad hasanzadeh. Ahmad Hassanzadeh. mohammad hasanzadeh. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER. A study on selective flotation in low and high pyritic ...
Solution chemistry of sulphide mineral flotation in ...
The use of low-quality water in sulphide minerals flotation plants has been studied widely. However, implementation of the strategy of low fresh water consumption and low process-affected water disposal in sulphide flotation requires a comprehensive understanding of the impacts of solution chemistry on sulphide minerals flotation.
PGM extraction from oxidized ores using flotation and …
oxidized pentlandite. Sulphidization is an aqueous process by which a non-sulphide mineral surface is converted to a sulphide-like surface and has been successfully used to improve the flotation recoveries of oxidized copper minerals and oxidized lead ores. (Orwe, Grano, and Lauder, 1998; Kongolo et al., 2003; Castro, Goldfarb, and Laskowski ...
Process mineralogy as a key factor affecting the flotation ...
The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper sulfide minerals. The minerals'' composition and association, grain distribution, and liberation within the ore samples were analyzed in the feed, concentrate, and the tailings of the flotation processes with two pulp densities of 25wt% and 30wt%.
Synergistic interactions between reagents in sulphide ...
The Journal of The South African Institute of Mining and Metallurgy JULY/AUGUST 1998 189 Introduction The creation of a favourable chemical environment is critical to the overall success of the flotation process. However, due to the complexity of the process and the large number of influential factors and their ... in sulphide flotation, the ...
REVIEW: ADSORPTION OF IONS AND MOLECULES TO SOLID …
· Valuable sulphide minerals are separated and concentrated from the crude ore by means of flotation. One fundamental step in this process is the selective hydrophobation by a collector of certain sulphide mineral surfaces.
BENEFICIATION OF ARSENIC BEARING COMPLEX SULPHIDE …
SULPHIDE ORE BY FLOTATION Alim GUL, Gulay BULUT, Ayhan Ali SIRKECI Istanbul Technical University, Mining Faculty, Mineral Processing Division, Ayazağa, Istanbul, Turkey [email protected] .tr Abstract: In this study beneficiation of a sulphide ore from the Gümüşhane-Black Sea Region of Turkey was investigated.
Flotation Behavior of Complex Sulfide Ores in the Presence ...
M. B. Hayat et al., "Flotation Behavior of Complex Sulfide Ores in the Presence of Biodegradable Polymeric Depressants," International Journal of Polymer Science, vol. 2017, Hindawi Publishing Corporation, Jun 2017.
Thebehaviourofminerals insulphideflotation processes ...
hydrophilic sulphide and non-sul-phide gangues. The metallurgical efficiency isgoverned bythe ability ofthe process to produce sufficient difference in the recovery rates of the minerals to obtain a high recovery ofthevaluable sulphide at an acceptable grade. Selectivity is altered byachange intheoperating variables, e.g., reagent additions,
Flotation Behavior of Complex Sulfide Ores in the Presence ...
· Base metals such as copper, lead, and zinc are mainly extracted from sulfide ores. Mostly these base metals tend to exist together in an ore. Flotation process is widely used to separate these minerals in sulfide ores . A wide range of chemical reagents are used in the flotation process to separate the different minerals.
There is 0.032% cobalt and 0.56% sulfur in the cobalt-bearing V–Ti tailings in the Panxi Region, with the metal sulfide minerals mainly including FeS2, Fe1−xS, Co3S4, and (Fe,Co)S2, and the gangue minerals mainly including aluminosilicate minerals. The flotation process was used to recover cobalt and sulfur in the cobalt-bearing V–Ti tailings.
SURFACE ANALYTICAL STUDIES OF OXIDATION AND ...
The process of selective separation of valuable sulfide minerals from gangue (e.g., other non-valuable sulfide minerals, oxides, silicates, etc.) is heavily dependent on processing steps involving control of surface oxidation products on the mineral surfaces and the addition of collector molecules designed to induce a hydrophobic
Potential Processing Routes for Recovery of Platinum Group ...
· The beneficiation of platinum group metals (PGMs) from pristine (unweathered) sulfide ores has conventionally been conducted through froth flotation, which typically achieves platinum recoveries of over 85%. The achieved successes of PGM concentration by flotation from the pristine sulfide ores are largely due to the occurrence of PGMs in close association with base metal sulfide …
Flotation experiment research on a polymetallic sulfide ore of
The polymetallic sulfide ore of copper, lead, and zinc is widely found all over the world and is often associated with rare metals such as gold and silver. The economic value of the comprehensive recycling of this of ore is large. The polymetallic sulfide ores of copper, lead, and zinc are usually processed via flotation, and the concentrates of
Pulp chemistry in sulphide mineral flotation
· Pulp chemistry in sulphide mineral flotation. In: K.S.E. Forssberg (Editor), Flo- tation of Sulphide Minerals 1990. Int. J. Miner. Process., 33:21-31. Variations in the oxidizing conditions of the pulp and their subsequent effects on flotation were examined for three types of natural sulphide ore, a complex pyrite ore, a sphalerite-galena ore ...
Division of Sustainable Process Engineering Sulphide ...
Division of Sustainable Process Engineering Sulphide Mineral Flotation A New Insight Into Oxidation Mechanisms Alireza Javadi ISSN: 1402-1757 ... hydrogen peroxide by pyrite and its influence on flotation – submitted to Journal of Minerals Engineering. 2. ... and grinding media on the flotation of sulphide ores. An iron mill reduced the natural
1 Froth Flotation – Fundamental Principles
flotation rate, particle size recovery, air flow, pulp density, etc.) As a result, it is difficult to study the effects of any single factor in isolation, and compensation effects within the system can keep process changes from producing the expected effects (Klimpel, 1995). This makes it
Paper written on project work carried out in partial ...
the flotation process, making the control of the sulphide concentration very difficult. Many of the control parameters such as the proportional gain are dependent on the sulphide consumption rate and the concentration of the sulphide solution. If any of these factors changes, the system cannot operate correctly. What is needed is a more dynamic ...
M.G. Aylmore, in Gold Ore Processing (Second Edition), 2016 5.1.1 Platsol™ Process. The Platsol™ process was originally developed in collaboration with the University of British Columbia, Kane Consultants Ltd., and Lakefield Research in Canada for the treatment of flotation sulfide concentrate for Polymet Mining Company in Minnesota and was tested on similar types of concentrate materials.
The collectorless flotation and separation of sulphide ...
· International Journal of Mineral Processing, 23 (1988) 55-84 55 Elsevier Science Publishers B.V., Amste~am -- Printed in The Netherlands The Collectorless Flotation and Separation of Sulphide Minerals by Eh Control ROBERT A. HAYES.1 and JOHN RALSTON.2 School of Chemical Technology, South Australian Institute of Technology, P.O. Box 1, Ingle Farm, Adelaide, S.A. 5098 …
Fundamental studies of the flotation process : the work of ...
Selected problems from the first two of these are discussed in some detail and deal with the agglomeration flotation of uranium and the chemical control of the flotation process for phoscorite. A detailed discussion is also presented of the progress made in the understanding of the interaction between sulphide minerals and thiol reagents, which ...
Effect of Seawater on Sulfide Ore Flotation: A Review ...
· The flotation process in seawater is highly complex and multifaceted, wherein the chemistry is very different to that of pure water. The high saline environment compresses the …
The depression of quartz in sulphide flotation
flotation pulps for the depression of gangue is . wides~readJ . and it is desirable that the mechanism of the depressant aetion be elucidated to allow close control of the flotation process to be obtained. Two probable mechanisms for sodium silicate depression of gangue have been postulated (lO), ''": ~. ( i) surtace closure (10) Taggart, A.F.
Flotation of a copper sulphide ore from Okiep using thiol ...
Flotation of a copper sulphide ore from Okiep using thiol collectors and their mixtures The Journal of The South African Institute of Mining and Metallurgy VOLUME 105 NON-REFEREED PAPER MARCH 2005 201 Figure 1—The final cumulative copper recovery vs. collector dosage obtained with C2-X, di-C2-DTP and di-C2-DTC in the flotation of the Okiep copper ore
Abstract This invention provides a process for improved separation of mono/multi-metallic sulphide minerals from significant amounts of iron sulphidess, mainly pyrrhotite and/or their finely divided process middlings. The process comprises subjecting such material to a conditioning stage with at least one water-soluble sulphur-containing inorganic compound as a prerequisite step for further ...
Optimize flotation process of Mo–Bi sulfide ore for ...
· 1. Introduction. Froth flotation is an important and versatile separation technique in the mineral processing industry for recovering valuable minerals from mining ores (Aghazadeh et al., 2015) oth flotation is a physico-chemical separation process based on the differences between the surface wettability of valuable and valueless components (Wills and Finch, 2015).
Characterization and Flotation of Sulfur from Chalcopyrite ...
However, the cost of the process of removing selenium and tellurium is relatively high. To make the process more economically feasible, the feed to the process should have a high sulfur content. The objective of this study is to upgrade the sulfur content of the leaching residue of sulfide ores or concentrates through froth flotation technique.
This invention provides a process for improved separation of mono/multi-metallic sulphide minerals from significant amounts of iron sulphides, mainly pyrrhotite and/or their finely divided process middlings. The process comprises subjecting such material to a conditioning stage with at least one water-soluble sulphur-containing inorganic compound as a prerequisite step for further conditioning ...
Sulphate Removal from Flotation Process Water Using Ion ...
Water chemistry is one of the most important parameters affecting flotation performance. Various types of ions can dissolve and accumulate in process water depending on ore mineralogy, reagent scheme, grinding medium and chemistry of mine site water. Sulfur-based ions (sulfate, thiosulfate, polythionate) are generally observed in flotation of sulfide ores.
Dual effects of sodium sulfide on the flotation behavior ...
· This study explores the flotation behavior of chalcopyrite in the presence of different concentrations of sodium sulfide (Na2S·9H2O) at pH 12 under controlled potential conditions. It was observed that the flotation of chalcopyrite is not depressed completely when the pulp potential is low, even at high concentrations of sodium sulfide, i.e., 10−1–10−2 mol/L.
International Journal of Mineral Processing | Flotation of ...
Reactions on sulfide mineral surfaces in connection with xanthate flotation studied by diffuse reflectance FTIR spectroscopy, atomic absorption spectrophotometry and calorimetry Ingmar Persson, Per Persson, Mats Valli, Susanna Fözö, Bo Malmensten
Principles and practice of sulphide mineral flotation ...
Synopsis. 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.
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