Ditend Tesh

Ditend Tesh
The University of Queensland | UQ · Julius Kruttschnitt Mineral Research Centre (JKMRC)

B Sc (Met Eng), B-Phil (Sust. Dev., Plan.& Mmgt), MSc (Chem. Eng)

About

12
Publications
3,692
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13
Citations
Additional affiliations
February 2012 - June 2017
The Namibia University of Science and Technology
Position
  • Lecturer

Publications

Publications (12)
Article
Namibia has been unable to develop an internationally competitive coloured gemstones and related industry due to poor coordination between key stakeholders in the sector. In addition, a large amount of practice-informed. knowledge is not documented or publicly shared. Furthermore, the contribution of the Namibian coloured gemstones industry to the...
Conference Paper
The design of experiment (DOE) was used to optimize the flotation of a complex fluorite ore. In an effort to find suitable reagent dosages for this ore, a three-factor, three-level, experimental design was used to determine the optimum dosages of frother, collector and depressant. All the flotation tests were conducted in a bottom driven floatcell....
Article
Full-text available
Namibia is awater stressed country with a limited amount of fresh water. Therefore, the use of water is an important topic in the country’s development agenda. Water is a shared and finite resource, with high social, cultural, environmental and economic values. However, freshwater resources are under pressure from ore processing, industrialization,...
Article
Full-text available
Namibia is known as water stressed country with a limited amount of fresh water. Therefore, the use of water is an important topic in the country’s development agenda. Water is a shared and finite resource, with high social, cultural, environmental and economic value. However, freshwater resources are under pressure from ore processing, industriali...
Article
Full-text available
Many reports have been written about the issues surrounding small scale miners’ challenges in Namibia; yet little has been done to address these challenges. There has been a fragmented approach to address these challenges. Various government arms and donororganizationshave utilizedpiece meal methods in the past in trying to make improvements on the...
Conference Paper
Full-text available
Namibia has a rapidly growing minerals industry and is a primary source for numerous valuable commodities, among which are many strategic metals; rare earth elements, tantalum and niobium. The insatiable global demand for such critical and strategic elements can therefore give Namibia an opportunity to become a major player in the market. The count...
Conference Paper
Full-text available
Located in south-west Africa, Namibia has a land area of approximately 825 400 km2 and a population of 2.3 million (The Africa Report, 2014), roughly one third of which is urban. The official language, embedded in the constitution, is English, but various indigenous languages are spoken, along with German and Afrikaans. Fringed by the Kalahari Dese...
Article
Full-text available
The mining industry worldwide is facing a tremendous shortage of minerals engineers in all fields of specialization. For instance, in Australia the skills shortage in the mining industry has been identified as one of the top risks facing the mining industry. In Namibia most minerals engineers employed are expatriates, with some being Namibians who...
Article
Full-text available
The mining industry worldwide is facing a tremendous shortage of minerals engineers in all fields of specialization. For instance, in Australia the skills shortage in the mining industry has been identified as one of the top risks facing the mining industry. In Namibia most minerals engineers employed are expatriates, with some being Namibians who...

Questions

Question (1)
Question
I using the staining method for pyrite/arsenopyrite with a solution of KMnO4 in 1: 1 H2SO4. This method had been used in the past by various researchers to characterise gold bearing pyrite (see for instance Fleet, M.E., Chryssoulis, S.L., Davidson, R., Weisener, C.G. and Maclean, P.J., 1993. Arsenian pyrite from gold deposits: Au and As distribution investigated by SIMS and EMP, and color staining and surface oxidation by XPS and LIMS. Canadian Mineralogist, 31(1), pp.1–17). Just by reading past researchers I am not understanding the preparation of the solution of KMnO4 in 1: 1 H2SO4. There is, one issue that is not clear in particular: - how much permanganate is required? Is it added as a solid or as a solution? Would you give clues?

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