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Wednesday, July 22, 2020 | History

4 edition of Oxidation of sulfide minerals in benefication processes found in the catalog.

Oxidation of sulfide minerals in benefication processes

by V. M. Avdokhin

  • 282 Want to read
  • 27 Currently reading

Published by Gordon and Breach in Amsterdam .
Written in English

    Subjects:
  • Ore-dressing.,
  • Sulphides.,
  • Oxidation.

  • Edition Notes

    StatementA.A. Abramov and V.M. Avdohin ; translated from the Russian by Al Peabody.
    ContributionsAbramov, A. A.
    Classifications
    LC ClassificationsTN500 .A92 1997
    The Physical Object
    Paginationx, 321 p. :
    Number of Pages321
    ID Numbers
    Open LibraryOL6820478M
    ISBN 109056995707
    LC Control Number00299979
    OCLC/WorldCa38448921

    The biological oxidation of sulfides and sulfur-containing compounds is a widely practiced industrial process. The use of sulfur oxidizing bacteria to treat hydrogen sulfide present in air exhaust or vent air streams is a commercial process practiced by a number of companies. 2 It might seem obvious that a simple solution would be to strip all the sulfide out of the aqueous phase into the. Mineral dressing (= Orebeneficiation) The first process most ores undergo after they leave the mine is mineral dressing (processing), also called ore preparation, milling, and ore dressing or ore beneficiation. Ore dressing is a process of mechanically separating the grains of ore minerals from the gangue minerals, to produce a concentrate.

    Application of Wet High Intensity Magnetic Separation to Sulfide Mineral Benefication; Recent Process Developments at Inco's Copper Cliff Milling Complex The Preferential Aqueous Oxidation of Sphalerite in a Mixed Sulphide Tailing using Manganese Dioxide Metallurgy of Gold Mining Ore Processing Geology Book $ Manual of Cyanidation. Furthermore, a new representation is proposed for the oxidation process. Ramos, Violeta, Andreia Rodrigues, Benoît Fournier, and Josée Duchesne. "Development of a quick screening staining test for detecting the oxidation potential of iron sulfide-bearing aggregates for use in concrete." Cement and Concrete Research 81 ():

    copper ore beneficiation processre name copper ore capacity th max feeding size mesh application this beneficiation process to elect a purity of more than 97 of the copper ore from the originalopper is one of valuable nonferrous metals, which is mainly extracted from sulfide . sulfide minerals; oxidation of the sulfides to copper oxide or sulfate must first take place. Air and ferric iron are the oxidants used in leaching sulfide copper from waste dumps and caved mine workings. Bacteria present in all dumps and mines accelerate the oxidation of sulfides by air. They are.


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Oxidation of sulfide minerals in benefication processes by V. M. Avdokhin Download PDF EPUB FB2

Oxidation of Sulfide Minerals in Benefication Processes [Avdohin, V.M.] on *FREE* shipping on qualifying offers. Oxidation of Sulfide Minerals in Benefication ProcessesCited by: 3. Results of recent experimental studies and modern theoretical concepts are combined in this volume to provide a comprehensive analysis of sulfide mineral oxidation processes.

Introductory chapters discuss the properties of sulfide minerals and various investigative techniques, followed by chapters on Oxidation of sulfide minerals in benefication processes book mechanisms and the behavior of minerals under these various oxidizing conditions.

Properties of Sulfide Minerals Methods of Investigation of Sulfide Mineral Oxidation Processes 2. Electrode Kinetics and Oxidation Mechanism 3.

Mutual Influence of Sulfide Minerals on Their Oxidation 4. Estimates of the Thermodynamic Stability of Sulfide Minerals. Oxidation of Sulfide Minerals in Benefication Processes PDF Download.

Download free ebook of Oxidation of Sulfide Minerals in Benefication Processes in PDF format or read online by A Abramov,V. Avdohin Published on by CRC Press. Results of recent experimental studies and modern theoretical concepts are combined in this volume to provide a Author: Ibrahim Bin Muhammad.

On the characteristic properties of oxidation of sulfide minerals exposed to nanosecond electromagnetic pulses This process is experimental and the keywords may be updated as the learning algorithm improves.

Okislenie sul’fidnykh mineralov v protsessakh obogashcheniya (Oxidation of Sulfide Minerals in Benefication Processes), Moscow Cited by: 8. Mineral Processing Design and Operations: An Introduction, Second Edition, helps further understanding of the various methods commonly used in mineral beneficiation and concentration processes.

Application of theory to practice is explained at each stage, helping operators understand associated implications in each unit process. This work focuses on sulfide mineral oxidation rates under oxic conditions in freshly processed pyrite-rich tailings from the ore concentrator in Boliden, northern Sweden.

Freshly processed tailings are chemically treated in the plant to kill bacteria and to obtain increased metal yields, resulting in a high pH level of 10–12 in the process. Decomposition of pentlandite in nitrogen. Heating rate 20 min-l, particle size 45 to 63 ~tm [6]. Oxidation reactions of sulphides The procedural variables, such as particle size, sample mass, heating rate, partial pressure of oxygen, and the size and composition of the sample pan, have an effect on the oxidation process of sulphides.

Surface oxidation of sulfides and copper (Cu) activation are 2 of the main processes that determine the efficiency of flotation. The present study was developed with the intention to ascertain the role of the phenomena in the biomodification of sulfides by Acidithiobacillus ferrooxidans culture (cells and growth media) and their impact in bioflotation.

For sulfide ores, a different process is taken for beneficiation. The ore needs to have the sulfur removed before smelting can begin. Roasting is the primary method of separating, where wood was placed on heaps of ore and set on fire to help with oxidation.

2 Cu 2 S + 3 O 2 → 2 Cu 2 O + 2 SO 2. 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 surface for bubble-particle attachment.

Separation is then. Examples of sulfide enrichment above the water table as well as at and below the water table are well known, and using the water table as a plane separating oxidation and sulfide enrichment is debatable.

It may be better to separate the zones on bases of stability of metal sulfides, controlled by oxidation-reduction potentials and pH. Pyrite, FeS" is the most abundant metal sulfide in nature and, therefore, has a major influence on the biogeochemical cyc1es of iron, sulfur, and oxygen.

Oxidation of sulfide minerals near the Earth's surface in the presence of water and oxygen frequently results in production of highly acidic, sulfate-rich solutions known as acid drainage. Influence of water column dynamics on sulfide oxidation and other major biogeochemical processes in the chemocline of Mariager Fjord (Denmark).

Marine Chemistry74 (1), Sulfide mineral. A metal-sulfide compound, such as pyrite (FeS 2), which forms at high temperature (>50°C) in well-crystallized veins or masses and at low temperatures (Oxidation.

The chemical process of reacting with oxygen. More generally, the chemical process of removing electrons from an atom or group of atoms. A simple method for the quantitative determination of elemental sulfur on oxidized sulfide minerals is described.

Extraction of elemental sulfur in perchloroethylene and subsequent analysis with high-performance liquid chromatography were used to ascertain the total elemental sulfur resulting from the oxidation of arsenopyrite, pyrite, marcasite, chalcopyrite, and chalcocite under various.

Oxidation of sulfide particles, process iron and dissolved ions in process water affect the behaviour of sulfides. The effects of some essential factors on flotation of Ni-Cu ores are considered. A case in point is the oxidation of PbS, a reaction long-studied because of its importance in mineral beneficiation using froth flotation, and in the extraction of lead from ore using.

ROASTING OF SULFIDE MINERALS In addition to common metals like copper, lead, zinc, and nickel a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. Sulfides are not reduced with the most widely used redu-cing agents, carbon and hydrogen, because the free energy change for the.

Pressure Oxidation is a process for extracting gold from refractory ore. The most common refractory ores are pyrite and arsenopyrite, which are sulfide ores that trap the gold within tory ores require pre-treatment before the gold can be adequately extracted.

The pressure oxidation process is used to prepare such ores for conventional gold extraction processes such as cyanidation. A versatile numerical model that couples oxygen diffusion and sulfide‐mineral oxidation (PYROX) has been developed to simulate the oxidation of pyrite in the vadose zone of mine tailings.

A shrinking‐core oxidation model and a finite element numerical scheme are used to simulate the transport of oxygen and oxidation of pyrite grains.The main pathways of sulfide oxidation in marine sediments involve complex interactions of chemical reaction and microbial metabolism.

Sulfide becomes partly oxidized and bound by Fe(III), and the resulting iron-sulfur minerals are transported toward the oxic sediment-water interface by bioturbating and irrigating fauna.Oxidation of Metal Sulfides Acid is generated at mine sites when metal sulfide minerals are oxidized.

Metal sulfide minerals are present in the host rock associated with most types of metal mining activity. Prior to mining, oxidation of these minerals and the formation of sulfuric acid is a function of natural weathering processes.