van der merwe fundamentals of elution of gold cyanide

2021-04-28T22:04:28+00:00
  • Fundamentals of the elution of gold cyanide from

    Fundamentals of the elution of gold cyanide from activated carbon. Van der Merwe, Pieter F ... Models were then developed to simulate the changes in cyanide and potassium concentrations during the elution of the gold cyanide. This enabled the calculation of a shifting gold cyanide equilibrium isotherm as a function of time and position in the ...

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  • Factors affecting the elution of gold cyanide from ...

    1994-1-1  The measured elution profiles were similar at the start of a run, but revealed some difference after two bed volumes, when the carbon starts to become reactive by losing its cyanide-age. Van der Merwe [16] analysed breakthrough curves for the adsorption of silver cyanide onto activated carbon in columns and found adsorption to be more sensitive ...

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  • Factors affecting the elution of gold cyanide from ... -

    By van Deventer J.S.J. and van der Merwe P.F. Abstract. Functional relationships were determined between the effects of pH, temperature, and the concentrations of cyanide and cations on the gold cyanide equilibrium during elution from activated carbon in columns and in batch reactors. Although the parameters in these functional relationships ...

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  • Factors affecting the elution of gold cyanide from ...

    van Deventer J.S.J.; van der Merwe P.F. (1994) Article Functional relationships were determined between the effects of pH, temperature, and the concentrations of cyanide and cations on the gold cyanide equilibrium during elution from activated carbon in columns and in batch reactors.

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  • The role of cyanide in the multi-component elution of ...

    2015-12-27  Van der Merwe (1991) and Stange (1991) showed that the elution of gold is dependent on the removal of the sodium or potassium introduced in the pre-treatment step. The extent of cyanide decomposition determines the passivation of the carbon surface and the decrease in the equilibrium isotherm for gold loading (Van der Merwe, 1991).

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  • Modelling of the AARL elution process - ScienceDirect

    1994-5-1  Van der Merwe, P.J., Fundamentals of the Elution of Gold cyanide from activated carbon, PhD Thesis, University of Stellenbosch, (June 1991). Sheindorf, C.H. Rebhum N., A Freundlich-Type Multi-component Isotherm, Journal of Colloid and hzterface Science, 79/1, 136-142 (Jan. 1981).

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  • The mechanism of elution of gold cyanide from

    1994-12-1  Numerous articles have appeared on the mechanism of the adsorption of gold cyanide onto activated carbon. In contrast, little information is available on the mechanism of elution of the adsorbed gold. It is the objective of this article to formulate such a mechanism on the basis of batch and column elution tests without analyzing adsorbed species on the carbon directly.

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  • Factors affecting the elution of gold cyanide from ...

    The elution of gold cyanide is suppressed by the presence of cations (Mn+) through the formation of Mn+ (Au(CN)2-) on the carbon. The horizontal position of the gold peak in an AARL elution profile was found to be a function of the elution of the cations from the carbon bed.

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  • The mechanism of elution of gold cyanide from

    1994-12-1  Numerous articles have appeared on the mechanism of the adsorption of gold cyanide onto activated carbon. In contrast, little information is available on the mechanism of elution of the adsorbed gold. It is the objective of this article to formulate such a mechanism on the basis of batch and column elution tests without analyzing adsorbed species on the carbon directly.

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  • The effect of temperature on the desorption of gold ...

    1993-6-28  Simulation of gold cyanide profile during AARL elution in the glass column at 70 C with the equilibrium model. Model parameters are given in Table 2. J.S.J. van Deventer, P.F. van der Merwe/Thermochim.

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  • optimal conditions for gold elution plant

    van der merwe fundamentals of elution of gold cyanide Whereas Au(CN){2 /-} is soluble in water, AuCN and Au require the addition of cyanide to form Au(CN){2 /-} The reversibility of the adsorption of gold onto carbon is a function of the nature of the adsorbed gold and determines the need for cyanide in the elution process, which affects the ...

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  • the reversibility of adsorption of gold cyanide on

    van der merwe fundamentals of elution of gold cyanide. Nov 29, 1993 Numerous articles have appeared on the mechanism of the adsorption of gold cyanide onto activated carbon. In contrast, elution gold Grinding Mill China. The mechanism of elution of gold cyanide from activated carbon .

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  • Final Project (13!12!2007) PDF Adsorption Cyanide

    2016-2-1  Steyn, J. (2003) Electrowinning optimization, Internal report, Anglogold Ashanti Van Deventer, JSJ and Van der Merwe, P.F. (1993) Factors influencing the elution of gold from activated carbon, Department of Metallurgical engineering, University of Stellenbosh, South Africa Van der Merwe, P.F. (1991), Fundamentals of the elution of gold cyanide ...

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  • The fundamentals of unit operations in CIP plants: A ...

    Abstract. During the past fifteen years significant progress has been made on carbon-in-pulp (CIP) technology for the extraction of gold. While most research on the mechanisms and kinetics of CIP sub-processes has focused on the adsorption step only, auxiliary unit operations such as elution, acid washing and the thermal regeneration of spent carbon have received less attention.

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  • Factors Affecting The Elution of PT, PD and Au

    2019-7-3  The increase in the gold elution is due to the higher loading, but which did not reach an equilibrium stage and which corre-Fig. 8 shows the elution curve from a higher PGM loaded acti- sponds to the findings by Boshoff (1994), Van der Merwe vated carbon compared to the elution of a lower loaded activated (1991) and Davidson and Duncanson (1977).

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  • Nanne Vegter - Principal Specialist Project Assurance

    The kinetics of elution of gold cyanide from activated carbon Hydrometallurgy: Fundamentals, Technology and Innovation, Eds: J.B. Hiskey and G.W. Warren, TMS, pp. 459-473 1993 Other authors

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  • contents

    2012-10-25  Gold • Evaluation and design of recovery circuits, carbon and resin adsorption, elution, electrowinning. Leach optimisation and heap leach bio-leaching amenability. • Cyanide speciation monitoring, online cyanide measurement and control, cyanide destruction. Assistance with ICMI gap or full certification audits.

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  • Stability constants of cyclic polyether complexes with ...

    2019-5-26  M Rautenbach, P Swart, M.J van der Merwe. The interaction of analogues of the antimicrobial lipopeptide, iturin A 2 , with alkali metal ions. Bioorganic Medicinal Chemistry 2000 , 8 (11) ,

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  • igor santander Adsorption Cyanide

    2019-9-29  hasi se hace

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  • El uso de carbon en el gpm.pdf Adsorption Cyanide ...

    2016-5-2  El uso de carbon en el gpm.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

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  • optimal conditions for gold elution plant

    van der merwe fundamentals of elution of gold cyanide Whereas Au(CN){2 /-} is soluble in water, AuCN and Au require the addition of cyanide to form Au(CN){2 /-} The reversibility of the adsorption of gold onto carbon is a function of the nature of the adsorbed gold and determines the need for cyanide in the elution process, which affects the ...

  • Get Price
  • the reversibility of adsorption of gold cyanide on

    van der merwe fundamentals of elution of gold cyanide. Nov 29, 1993 Numerous articles have appeared on the mechanism of the adsorption of gold cyanide onto activated carbon. In contrast, elution gold Grinding Mill China. The mechanism of elution of gold cyanide from activated carbon .

  • Get Price
  • Final Project (13!12!2007) PDF Adsorption Cyanide

    2016-2-1  Steyn, J. (2003) Electrowinning optimization, Internal report, Anglogold Ashanti Van Deventer, JSJ and Van der Merwe, P.F. (1993) Factors influencing the elution of gold from activated carbon, Department of Metallurgical engineering, University of Stellenbosh, South Africa Van der Merwe, P.F. (1991), Fundamentals of the elution of gold cyanide ...

  • Get Price
  • The fundamentals of unit operations in CIP plants: A ...

    Abstract. During the past fifteen years significant progress has been made on carbon-in-pulp (CIP) technology for the extraction of gold. While most research on the mechanisms and kinetics of CIP sub-processes has focused on the adsorption step only, auxiliary unit operations such as elution, acid washing and the thermal regeneration of spent carbon have received less attention.

  • Get Price
  • - T 15 x. Tirado, Antonio Cinética química Adsorción

    2014-3-5  3. Van Der Merwe, P.F., Fundamentals of the elution of gold cyanide from activated carbon, 5-8, ( 1991 ). V. AGRADECIMIENTOS Los autores desean agradecer a los ings: Erick Acosta Rodrguez, y Luis Vargas Hurtado, Jefe General de Procesos La Quinua, y Superintendente de Procesos Zona Oeste, por el apoyo brindado. VI. REFERENCIAS 1. Alfred Lodi ...

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  • contents

    2012-10-25  Gold • Evaluation and design of recovery circuits, carbon and resin adsorption, elution, electrowinning. Leach optimisation and heap leach bio-leaching amenability. • Cyanide speciation monitoring, online cyanide measurement and control, cyanide destruction. Assistance with ICMI gap or full certification audits.

  • Get Price
  • Stability constants of cyclic polyether complexes with ...

    2019-5-26  M Rautenbach, P Swart, M.J van der Merwe. The interaction of analogues of the antimicrobial lipopeptide, iturin A 2 , with alkali metal ions. Bioorganic Medicinal Chemistry 2000 , 8 (11) ,

  • Get Price
  • Nanne Vegter - Principal Specialist Project Assurance and ...

    The kinetics of elution of gold cyanide from activated carbon Hydrometallurgy: Fundamentals, Technology and Innovation, Eds: J.B. Hiskey and G.W. Warren, TMS, pp. 459-473 1993 Other authors

  • Get Price
  • El uso de carbon en el gpm.pdf Adsorption Cyanide ...

    2016-5-2  El uso de carbon en el gpm.pdf - Free download as PDF File (.pdf), Text File (.txt) or read online for free.

  • Get Price
  • Mineral Resources and Mineral Reserves Supplement to the

    Mineral Resources and Mineral Reserves Supplement to the

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