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Browsing by Supervisor "Sandenbergh, R.F."
Now showing items 1-17 of 17
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(University of Pretoria, 2006-12-01)As one of the most abundant elements on earth, iron is nearly always present in metal concentrates. This is specifically true for zinc sulphide concentrates, which can contain up to 18% iron (marmatite). Today more than ...
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(University of Pretoria, 2006-12-21)The full text of this thesis/dissertation is not available online. Pending permission from the author/supervisor access may be provided on <a href="mailto:upetd@up.ac.za">request.</a> Read the abstract in the section 00front ...
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(University of Pretoria, 2016)Biooxidation is an attractive process for unlocking of gold from refractory ores, but could be further improved by reducing the rather high cyanide consumption during the cyanidation of the biooxidation residues. The high ...
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(University of Pretoria, 2020)Preg-robbing gold ores reduce the gold recovered with conventional aqueous cyanide processing by adsorption of the leached gold onto the ore which is then lost to the residue. Many ore constituents adsorb gold in the ...
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(University of Pretoria, 2007-04-17)Chromium passivation treatment on tinplate is important in stabilising the active tin surface in terms of oxidation resistance, sulphide stain resistance and ensuring good lacquer adhesion properties. Through this research, ...
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(University of Pretoria, 2007-04-16)In recent years, emissions of hydrogen cyanide from metallurgical operations have received renewed attention by legislative bodies, leading to the need for a reliable quantification method for HCN volatilisation. Subsequently, ...
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(University of Pretoria, 2017)Successful electrowinning and electrorefining processes for the production of high purity and compact electroplated metal require the optimization of the electrolyte composition and operating parameters. In nickel ...
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(University of Pretoria, 2017)European REACh regulations are aimed at the complete removal of the toxic and carcinogenic cadmium and hexavalent chromium coatings currently being employed for corrosion protection of ultra-high strength steel and other ...
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(University of Pretoria, 2015)Successful commercial electrowinning and refining of metals typically requires the optimization of the electrolyte composition and operating parameters to produce high quality compact electroplated metal. The prediction ...
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(University of Pretoria, 2012)High and medium-pressure roller crushers operate on the principle of inter-particle crushing by crushing material in a packed bed. Although reference in the study is made to high-pressure roller crushers, the work was done ...
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(University of Pretoria, 2007-02-19)Please read the abstract in the 00front part of this document
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Influence of silver alloying and impurities on the dissolution of gold in alkaline cyanide solutions (University of Pretoria, 2006-12-21)Please read the abstract in the front section of this document
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(University of Pretoria, 2014)The leach solution obtained by leaching of zinc containing ores typically has to be highly purified before it can be used as electrolyte for the electrowinning of zinc. Cobalt is a troublesome impurity in the sense that ...
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(University of Pretoria, 2007-01-11)The primary crushing circuit at Premier Diamond Mine was simulated to improve operating costs and diamond recovery. Due to surges in certain feed streams a dynamic simulation was done. The applicability of the general-purpose ...
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(University of Pretoria, 2007-10-18)Iron is often present in leach liquors produced in chemical and hydrometallurgical processes. It is known that voluminous iron precipitates with high impurity values are formed if the conditions during its formation are ...
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(University of Pretoria, 1994)The interactions between engineering materials and their environment which give rise to stress corrosion cracking are reviewed and industrial examples from the petrochemical industry are described. In one of the examples, ...
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(University of Pretoria, 2013)Stress-corrosion cracking of steel occurs in the CO-C02-H20 system when these three environmental components are present together. The dissolved carbon monoxide in the water forms an inhibitive layer on the surface of ...
Now showing items 1-17 of 17