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Relevant bibliographies by topics / Cyanide process

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Dissertations / Theses

Academic literature on the topic 'Cyanide process'

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

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Dissertations / Theses on the topic "Cyanide process"

1

Guilfoyle, Laurence Michael. "Quartz crystal microbalance analysis for cyanide and cyanide-degrading bacteria in gold process solutions." Thesis, Guilfoyle, Laurence Michael (1998) Quartz crystal microbalance analysis for cyanide and cyanide-degrading bacteria in gold process solutions. PhD thesis, Murdoch University, 1998. https://researchrepository.murdoch.edu.au/id/eprint/52707/.

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Cyanide is used by the gold mining industry to extract gold from ore. The accurate measurement of cyanide in process solutions and the removal of cyanide from wastes are two areas of significant concern for the gold mining industry. Biological cyanide destruction has been used successfully to remove cyanide from process solutions and leachate from heap leach pads. The aim of this work was to investigate cyanide degrading bacteria from gold mines in Western Australia. In order to measure the activity of cyanide degrading bacteria, a method was developed to determine cyanide in small sam

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2

Bicknell, C. R. "The role of rhodium in the Andrussow process." Thesis, Nottingham Trent University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389767.

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Dippenaar, Francois. "The interaction between free cyanide and silver impregnated activated carbon in a column configuration." Thesis, Cape Technikon, 2000. http://hdl.handle.net/20.500.11838/883.

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Thesis (MTech (Chemical Engineering))--Cape Technikon, Cape Town, 2000<br>Due to equilibrium constraints and the relatively slow kinetics of the cyanidation of gold ores, calcium or potassium cyanide is added to the leaching stage in excess to that required theoretically. This, in many situations, result in large concentrations of free cyanide present in the effluent streams from gold plants. In view of the toxicity of cyanide and the fact that cyanide is fatal in small dosages, authorities have been forced to tigl1ten up plant discharge regulations. Therefore, it is vital to remove cyani

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Burnett, Hannelene Jo-Anne. "Equilibrium shift of gold adsorption in a batch reactor." Thesis, Cape Technikon, 2001. http://hdl.handle.net/20.500.11838/881.

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Thesis (MTech(Chemical engineering))--Cape Technikon, Cape Town, 2001<br>Over the years the carbon-in-pulp technology has been refined to become the highly efficient process that is used in our present-day system of recovering dissolved gold from cyanide leached pulps. The efficiency of a CIP circuit mainly depends on the effectiveness ofthe adsorption section as it not only determines the amount of soluble gold lost in the residues, but also indirectly affects the function of the other processes in the plant. Research in this area has declined over the past few years as a result of

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5

Van, Wyk Andries Pieter. "Flowsheet development and comparison for the recovery of precious metals from cyanide leach solutions." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86302.

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Thesis (MEng)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The Platreef ore deposit, situated in the Bushveld Igneous Complex, is one of the world’s largest platinum group metal (PGM) resources. The mineralogy of this resource is, however, unique as it consists of complex PGM mineralization with mainly copper and nickel, at very low PGM grades. The PGMs are mainly present in the ore as slow floating refractory minerals resulting in marginal process economics when processing via traditional mill-float-smelt processes. A new process is currently being investigated to extract PGMs from l

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Van, den Berg Rudolf. "Inhibition of the pregrobbing phenomenon in gold ores." Thesis, Cape Technikon, 2000. http://hdl.handle.net/20.500.11838/907.

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Thesis (MTech (Chemical Engineering))--Cape Technikon, Cape Town, 2000<br>In a typical gold-recovery plant, it is estimated that a substantial amount of the gold in residues may be in the form that is recoverable by cyanidation. The gold in residues can be ascribed broadly to (l) the presence of cyanicides, which consume the cyanide radical and thus inhibit dissolution of gold, (2) refractory gold resulting from coatings on some gold particles, (3) large gold particles incompletely dissolved due to inadequate contact time, (4) unliberated gold as a result of too coarse a milled produ

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7

Fernando, Kapila Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "The treatment of cyanidation tailings using ion exchange resin." Awarded by:University of New South Wales. Chemical Sciences & Engineering, 2007. http://handle.unsw.edu.au/1959.4/40697.

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This thesis explores the behaviour of metal cyanide complexes under oxidative acid conditions in ion exchange systems, with the objective of developing an ion exchange based process for the treatment of gold cyanidation tailings. The novel cyanide detoxification process developed from this study employs strong base ion exchange resins to extract cyanide from tailings. Variations in the stability of cyanide complexes are exploited to concentrate, recover, or destroy cyanide species loaded on the resin, through the use of an oxidative acid eluent containing H2O2 and H2SO4. This eluent removes al

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Gray, Diane Elizabeth. "A quantitative study into carbon-in-pulp adsorption operations." Thesis, Cape Technikon, 1999. http://hdl.handle.net/20.500.11838/886.

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Thesis (MTech (Chemical Engineering))--Cape Technikon, Cape Town, 1999<br>Carbon-in-pulp (CIP) and carbon-in-leach (CIL) remain the most effective, and widely used processes for gold recovery from cyanided pulps. The extensive use of carbon in such processes have prompted many researchers to investigate the mechanism of metal cyanide adsorption. Not only has this provided many viable theories in the understanding of the mechanism, but it has also led to an improved understanding of the effects of the various operating conditions on the CIP circuit. However, the declining gold price has ma

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9

Major, Jacqueline. "A solution concentration model for CIP simulation." Thesis, Cape Technikon, 2001. http://hdl.handle.net/20.500.11838/871.

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Thesis (MTech (Chemical Engineering))--Cape Technikon, Cape Town, 2001.<br>Carbon-in-pulp technology is used extensively in the mining industry to recover metal cyanides from solution. Also this technology has found increasing application in the gold mining sector, replacing the less efficient zinc precipitation procedure. The extensive use of carbon in such processes have prompted many researchers to investigate the mechanism of metal cyanide adsorption. Not only has this provided many viable theories in the understanding of the mechanism, but has also led to an improved understanding of

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10

Mekuto, Lukhanyo. "A mixed microbial community for the treatment of free cyanide and Thiocyanate containing wastewater." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2555.

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Thesis (DTech (Chemical Engineering))--Cape Peninsula University of Technology, 2017.<br>Industrial wastewater management pertaining to the mining industry has become increasingly stringent, with companies being required to develop environmentally benign wastewater management practices worldwide. The industries that utilise cyanide compounds for the recovery of precious and base metals in a process known as the cyanidation process, have contributed substantially to environmental deterioration and potable water reserve contamination due to the discharge of poorly treated, or untreated, cyanide

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