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Refractory gold flotation process

The present paper describes the beneficiation of low-grade gold ore by flotation columns and the implications of improved metallurgy on subsequent cyanidation. 2. EXPERIMENTAL 2.1. The gold ore The mineralogical assay of gold ore revealed that the ore is semi-refractory containing both free and refractory gold approximately in the ratio of 80:20

  • TECHNOLOGY FOR PROCESSING OF REFRACTORY GOLD
    TECHNOLOGY FOR PROCESSING OF REFRACTORY GOLD

    disseminated gold from the flotation concentrate resulted from processing of a refractory ore of one of Russian gold deposits. Concentrate description Gold grade of the head flotation concentrate was 29.6 g/t. The concentrate size was 80% -80 um. Mineral composition of the concentrate comprises 17% of rock-forming minerals, 59% of pyrite and 24%

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  • Refractory Gold Technology
    Refractory Gold Technology

    Sherritt’s gold process has several advantages over traditional ... The process has low sensitivity to the sulphur, antimony and lead content of the feed material, allowing increased gold recovery in the mill flotation circuits, and/or the direct treatment ... Sherritt’s Refractory Gold Technology is used to recover gold from refractory

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  • The Leachox™ Refractory Gold Process – The Testing
    The Leachox™ Refractory Gold Process – The Testing

    Leachox, Ultra fine grinding, Vasilkovskoye, Refractory, Imhoflot pneumatic flotation, Leaching, Oxidation . ABSTRACT . The Leachox refractory gold process has to date been applied to the selectivetreatment of several refractory gold ores but on a relatively small scale. In

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  • Specific Refractory Gold Flotation and Bio-Oxidation
    Specific Refractory Gold Flotation and Bio-Oxidation

    Currently, a greater percentage of gold is extracted from low grade, refractory gold ores, following depletion of most high grade deposits [8]. Increasing complexity of these refractory ores warrants improvement in our fundamental and applied knowledge un-derpinning sustainable, cost-effective, commercial gold extraction process and commod

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  • TECHNOLOGY FOR PROCESSING OF REFRACTORY
    TECHNOLOGY FOR PROCESSING OF REFRACTORY

    disseminated gold from the flotation concentrate resulted from processing of a refractory ore of one of Russian gold deposits. Concentrate description Gold grade of the head flotation concentrate was 29.6 g/t. The concentrate size was 80% -80 um. Mineral composition of the concentrate comprises 17% of rock-forming minerals, 59% of pyrite and 24%

    Get Price
  • Gold recovery from refractory gold concentrates by
    Gold recovery from refractory gold concentrates by

    refractory gold ores gradually (Karamanev et al., 2001; Zhu et al., 2012). There are two reasons for refractory of gold: (a) The content of organic carbon in the ores is higher and carbon could be enriched in the flotation process. The higher content of carbon in the flotation

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  • Processing of refractory gold ores - ScienceDirect
    Processing of refractory gold ores - ScienceDirect

    Jan 01, 1991 Jan 01, 1991 Processing of refractory gold ores 1031 Of the process routes that have received attention only two have been applied on a large scale, these being the traditional process routes involving Roasting and more recently Pressure Oxidation. ... the gold loss to the flotation tailings might well be significant and will warrant no further evaluation

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  • Gold Flotation | Gold Mining Process | Gold Mining
    Gold Flotation | Gold Mining Process | Gold Mining

    Flotation is also used for the removal of interfering impurities before hydrometallurgical treatment, for the upgrading of low sulfide and refractory ores for further treatment. Flotation is considered to be the most cost-effective method for concentrating gold. Flotation process maximizes the enrichment of gold

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  • PROCESS FOR RECOVERING GOLD AND SILVER FROM REFRACTORY
    PROCESS FOR RECOVERING GOLD AND SILVER FROM REFRACTORY

    The present invention is directed to flotation of refractory and double refractory ores. In a first embodiment, a method includes the steps of: (a) providing a refractory gold-bearing sulfide ore. (b) comminuting the material to form a feed material with a primary size distribution; (c) floating the feed material to form first concentrate and

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  • ALTA Gold 2012 E-Doc - Albion Process
    ALTA Gold 2012 E-Doc - Albion Process

    the Albion Process can be potentially comparable or lower cost compared with the conventional technologies (5). The most significant item affecting the economics is the amenability of the ore to flotation where gold can be concentrated in a small mass pull and reduce size and cost of a plant (6)

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  • A review of the effects of grinding media and chemical
    A review of the effects of grinding media and chemical

    Aug 01, 2016 Aug 01, 2016 Flotation performance of gold-bearing pyrite in refractory gold ores depend upon the interplay among process water chemistry, grinding chemistry, and ore mineralogy. The nature of pyrite itself (finely disseminated reactive pyrite vs. low reactivity) also plays a

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  • Gold Extraction from a High Carbon Low-Grade Refractory
    Gold Extraction from a High Carbon Low-Grade Refractory

    A high carbon low-grade gold ore, in which gold mainly occurs in carbonaceous matters, is a typical refractory gold ore whose conventional cyanide leaching extraction is only 12.9 %. In this paper, by the process of flotation-roasting-leaching, gold was effectively enriched and extracted

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