Developments in ion exchange: The mintek perspective

Green, B. R.; Kotze, M.; Wyethe, J. P.

doi:10.1007/bf02709220

Cited by 22 publications

(6 citation statements)

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“…The success of the RIL depends on the aggressiveness of the pregrobber (Green et al, 2002). Even though resin-in-pulp (RIP) has been used in the former Soviet Union for decades, there have been few applications in the rest of the world.…”

Section: Activated Carbon-in-leach (Cil) and Resin-in-leach (Ril)mentioning

confidence: 99%

Preg-Robbing Gold Ores

Miller

Wan²,

Diaz

2016

Gold Ore Processing

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Section: Activated Carbon-in-leach (Cil) and Resin-in-leach (Ril)mentioning

confidence: 99%

Preg-Robbing Gold Ores

Miller

Wan²,

Diaz

2016

Gold Ore Processing

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“…The use of IX resin to treat preg-rob ore in a resin-in-leach (RIL) process can also be combined with pretreatment using blinding agents. In this case, the blinding agent will not passivate the resin, as in the case of activated carbon passivation, when the blinding agents are used in combination with the activated carbon [6]. In this paper, the effectiveness of a combined use of blinding agents (i.e.…”

Section: Introductionmentioning

confidence: 99%

Improving Gold Recovery from Artificial Preg-Robbing Ore by Pre-treatment using Blinding Agent and Resin-in-Leach

Mubarok

Irianto²

2016

J. Eng. Technol. Sci.

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Abstract. In the present paper, the effectiveness of the use of blinding agents, ionic exchanger resins and the combination of them in improving gold extraction from simulated preg-robbing ore is discussed. The blinding agents used were kerosene, diesel oil and pine oil, while the ion exchange resins used were Lewatit Monoplus MP 800, Lewatit AF 5 and guanidine. Preg-robbing conditions were simulated by blending fine activated carbon with ore sample. The investigation results show that the presence of artificial carbonaceous materials at 2% (w/w) in the gold ore significantly reduces gold recovery. Pretreatment of artificial preg-robbing ore prior to cyanidation by mixing with kerosene, diesel oil and pine oil for 0.5h improved gold recovery up to 25.4%. A combination of pre-treatment using blinding agent and a resin in leach (RIL) test using Lewatit MP 800 resin demonstrated a synergistic effect that improves gold recovery up to a level of 99.5%,which is significantly higher than using activated carbon and without pretreatment.

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“…Ion-exchange is increasingly being considered as an alternative to carbon adsorption in the gold industry for the extraction of the gold cyanide complex, [Au(CN) 2 ] - , from leach solutions. , Ion-exchange resins have a much higher capacity than carbon for loading gold and other base-metal cyanide complexes and also offer the possibility of recycling free cyanide. Although the loading of [Au(CN) 2 ] - onto ion-exchange resin presents relatively few difficulties, the elution (stripping) of this species and the subsequent regeneration of the resin are key issues that need to be resolved before this technology can be adopted widely by industry.…”

Section: Introductionmentioning

confidence: 99%

Ion-Exchange Equilibria for [Au(CN)₂]^-/Cl^-, [Au(CN)₂]^-/SCN^-, and SCN^-/Cl^- in Acetone + Water Mixtures at 303 K

et al. 2005

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Ion-exchange equilibria are presented for [Au(CN) 2 ] -/Cl -, [Au(CN) 2 ] -/SCN -, and SCN -/Clin acetone + water mixtures at 303 K using Purolite A500 as the ion exchanger. The effect of the composition of acetone in the external solution on the ion-exchange isotherm for each binary system is considered. The experimental data are correlated using the law of mass action, modified with activity coefficients, to determine the equilibrium constant for each binary system. It is shown that the selectivity of Purolite A500 is highly dependent on the composition of the external solution. The selectivity of the resin for [Au(CN) 2 ] -, in particular, decreases markedly with an increase in the composition of acetone. The fitted values of the equilibrium constants are consistent with the trends observed in the corresponding ionexchange isotherms.

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Developments in ion exchange: The mintek perspective

Cited by 22 publications

References 1 publication

Preg-Robbing Gold Ores

Preg-Robbing Gold Ores

Improving Gold Recovery from Artificial Preg-Robbing Ore by Pre-treatment using Blinding Agent and Resin-in-Leach

Ion-Exchange Equilibria for [Au(CN)₂]^-/Cl^-, [Au(CN)₂]^-/SCN^-, and SCN^-/Cl^- in Acetone + Water Mixtures at 303 K

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Developments in ion exchange: The mintek perspective

Cited by 22 publications

References 1 publication

Preg-Robbing Gold Ores

Preg-Robbing Gold Ores

Improving Gold Recovery from Artificial Preg-Robbing Ore by Pre-treatment using Blinding Agent and Resin-in-Leach

Ion-Exchange Equilibria for [Au(CN)2]-/Cl-, [Au(CN)2]-/SCN-, and SCN-/Cl- in Acetone + Water Mixtures at 303 K

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Ion-Exchange Equilibria for [Au(CN)₂]^-/Cl^-, [Au(CN)₂]^-/SCN^-, and SCN^-/Cl^- in Acetone + Water Mixtures at 303 K