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the dissolution of gold from roasted pyrite concentrate

  • The dissolution of gold from roasted pyrite concentrates

    The dissolution of gold from roasted pyrite. concentrates by A. O. FILMER*, Ph.D. SYNOPSIS A stu.dy of the dissolution of gold from a pyrite concentrate and from various calcines is reported. The percentage extraction of gold was found to decrease with increasing sulphur content in the material leached because of the por~sity of the m~terials, and parti~ularly. because of.t~e passi~atioof

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  • The effect of pyrite particle size on the electrochemical

    For instance, when gold was split and dispersed equally within the pyrite layer and within the adjacent quartz layer, gold dissolution was found to be around 35%, suggesting a negative effect of

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  • Application of Roasting Pretreatment for Gold Dissolution

    PDF In order to dissolve Au, Ag, and other valuable metals from gold ore concentrate, raw gold concentrate was pretreated by roasting and saltroasting at . The roasted concentrate was treated

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  • extracting gold from pyrite whitehillstree

    The dissolution of gold from roasted pyrite concentrates SAIMM A stu.dy of the dissolution of gold from a pyrite concentrate and from various . extraction of gold was found to decrease with increasing sulphur content in the.

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  • Selective gold dissolution from a roasted auriferous

    Gold dissolution from a roasted auriferous pyritearsenopyrite concentrate was studied using an iodineiodide solution as lixiviant. The influence of iodineiodide concentrations and pH on dissolution yield and side reactions with other ore constituents was examined. Available gold dissolution was fast and almost selective.

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  • Gold Leaching of Pyrite Concentrate

    Gold Leaching of Pyrite Concentrate The ore consisted of quartz, in which, above the 250ft. level, the ironminerals were largely oxidized and some free gold was visible below that level few traces of oxidation occurred, and pyrite constituted the principal mineralizer in the quartz, together with occasional pockets of galena and a few eccentric specks of covellite.

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    Roasting Arsenical Gold Ores ·and Concentrates

    roasting with admixed pyrite. The same tendency, illustrated in the earlier papers on Beattie, and con­ firmed by later work, has been sup­ plemented by lacer studies which show that elemental arsenic, when alloyed with gold, aids rather than hinders dissolution of gold in cya­ nide solution. The same appears to

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    Thedissolution ofgoldfromroastedpyrite concentrates SAIMM

    and pyrite), the golddissolution current could be expected todroptobelow1Op,A.cm2.Again,theparticle sizeofthe gold inthe calcine isnot known, and this value cannot beconverted direct into aleaching rate. However, therate willbemuch slowerthan that forthe dissolution ofunpassivated gold.Fig.1indicates that

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  • Dissolution of gold during pyrite oxidation reaction

    Gold dissolution is very slow at pH > 10 while thiosulphate decomposition is rapid at pH < 8. Only a limited amount of testwork was completed on the first pyrite concentrate (PY 1), but under the best conditions, 65% of the sulphide was oxidized and 72% of the gold was leached with the in situ generated thiosulphate over a period of 28 h.

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  • Journal Papers The dissolution of gold from roasted pyrite

    The dissolution of gold from roasted pyrite concentrates. AUTHOR AO Filmer. file v082n03p090.pdf description Journal Paper Vol 082 No 03 Pg 090. page 90. Add comment. Name (required) Email (required, but will not display) Notify me of followup comments. Send. JComments. Advanced search.

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