WATER CHILLERS Established 1959
Mining in focus
Another innovation in EW was modern copper EW tankhouse coupled with copper SX. The results were a“ 93 – 95 % current efficiency while producing 60 % to 80 % more copper per unit of tankhouse area than the early EW tankhouses”.
Copper mining and extraction today
Kordosky’ s paper eludes to copper extraction innovation that has paved the way for new copper extraction methods and technologies today. Copper extraction has since improved where today, big plants are able to process large tonnes of copper at the highest quality, using smart technological innovations to do so. Elements of conventional copper processing still remain, even with the age of technological innovation.
The University of Arizona’ s Superfund Research Programme outlines the complex processes of copper processing today. As complex as the processes are, up to 99.99 % of pure copper can be reached, despite mining ore of less than 1 %.
According to the research programme, there are two different methods of processing copper, depending on the type of chemistry ores of the copper. The first method is hydrometallurgy, which is more suitable for copper oxide. Copper oxides are found closer to the surface and are ideal for opencast mining method. The disadvantage of copper oxides is that they have low-grade ore, with a lower concentration of copper. The research programme highlights
SPRINGS – GAUTENG- SOUTH AFRICA
WATER CHILLERS Established 1959
• Local design & manufacture of Water Chillers and specialised cooling systems.
» Locally manufactured: 800W to 75kW » Extended range: 90kW to 280kW
• Customised / special chillers on request
• Preferred supplier of chillers for laboratories and analytical industry
• Temperature controllers( water to water & air to water)
• Industrial drinking water coolers
• Demo, second hand & hire chillers available
• Standard and salt water shell / tube condensers and evaporators
• Extensive spares holding to support chiller range
• After sales technical support & maintenance
• Network of preferred / authorised agents countrywide and selected African countries
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SEPTEMBER 2018 MINING MIRROR [ 41 ]