The investigation focuses on leaching of copper (2 wt%), cobalt (0.5 wt%) and iron (2.4 wt%) from... more The investigation focuses on leaching of copper (2 wt%), cobalt (0.5 wt%) and iron (2.4 wt%) from complex tailings material from the Democratic Republic of Congo. The highest recovery of copper and cobalt into the leach solution were 78 and 10%, respectively, under direct leaching with sulphuric acid. Higher recoveries (90% for copper and 96% for cobalt) were attained when the material was pre-reduced with coal for 1.5 h in the temperature range of 700–950 °C. The increased recoveries were due to metallisation of all the copper and cobalt which is in the silicate matrix. The effects of pre-reduction temperature and sample to carbon weight ratios were analysed and found to be important in; (i) achieving high recoveries of copper and cobalt and (ii) decreasing the amount of iron in the leach solution. The samples were characterised by atomic absorption spectroscopy and scanning electron microscopy (SEM) techniques.
Mopani Copper Mines has been experiencing late process of result reporting at its Analytical Labo... more Mopani Copper Mines has been experiencing late process of result reporting at its Analytical Laboratory. The delay in reporting results has been attributed to increased number of samples and analyses that are required within standard laboratory practices. Because Analytical Laboratories desire to enhance their performance as a way of increasing operational capacity, reduce operational costs, and improve cash flow, technological trends which elevate experimental data quality and reduce laboratory turnaround times were adapted at Mufulira Analytical Services Department. The study was undertaken to assess the impact of laboratory automation and informatics on the cost of operations, production output and quality of operations. Primary and secondary data was collected and analysed on a sample population size that included employees from the Analytical Services Department and client departments. The research study made the following conclusions: (i) Automation and Informatics has resulte...
This review highlights the alkali roasting of aluminium, chromium and titanium minerals as an alt... more This review highlights the alkali roasting of aluminium, chromium and titanium minerals as an alternative to mitigate the environmental pressure associated with their mineral processing.
Single phase CuAlO2 has been synthesized within 1.5 hours. AC and DC electrical measurements reve... more Single phase CuAlO2 has been synthesized within 1.5 hours. AC and DC electrical measurements revealed change in conduction mechanism at 375 °C.
The investigation focuses on leaching of copper (2 wt%), cobalt (0.5 wt%) and iron (2.4 wt%) from... more The investigation focuses on leaching of copper (2 wt%), cobalt (0.5 wt%) and iron (2.4 wt%) from complex tailings material from the Democratic Republic of Congo. The highest recovery of copper and cobalt into the leach solution were 78 and 10%, respectively, under direct leaching with sulphuric acid. Higher recoveries (90% for copper and 96% for cobalt) were attained when the material was pre-reduced with coal for 1.5 h in the temperature range of 700–950 °C. The increased recoveries were due to metallisation of all the copper and cobalt which is in the silicate matrix. The effects of pre-reduction temperature and sample to carbon weight ratios were analysed and found to be important in; (i) achieving high recoveries of copper and cobalt and (ii) decreasing the amount of iron in the leach solution. The samples were characterised by atomic absorption spectroscopy and scanning electron microscopy (SEM) techniques.
Mopani Copper Mines has been experiencing late process of result reporting at its Analytical Labo... more Mopani Copper Mines has been experiencing late process of result reporting at its Analytical Laboratory. The delay in reporting results has been attributed to increased number of samples and analyses that are required within standard laboratory practices. Because Analytical Laboratories desire to enhance their performance as a way of increasing operational capacity, reduce operational costs, and improve cash flow, technological trends which elevate experimental data quality and reduce laboratory turnaround times were adapted at Mufulira Analytical Services Department. The study was undertaken to assess the impact of laboratory automation and informatics on the cost of operations, production output and quality of operations. Primary and secondary data was collected and analysed on a sample population size that included employees from the Analytical Services Department and client departments. The research study made the following conclusions: (i) Automation and Informatics has resulte...
This review highlights the alkali roasting of aluminium, chromium and titanium minerals as an alt... more This review highlights the alkali roasting of aluminium, chromium and titanium minerals as an alternative to mitigate the environmental pressure associated with their mineral processing.
Single phase CuAlO2 has been synthesized within 1.5 hours. AC and DC electrical measurements reve... more Single phase CuAlO2 has been synthesized within 1.5 hours. AC and DC electrical measurements revealed change in conduction mechanism at 375 °C.
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