The power vacuum: The effect of the electricity power crisis on GDP in South Africa in the context of an uncertain coal supply

CIM Journal, Vol. 2, No. 4, 2011
P. Sorensen Freyaafdrammen, Ansfrere, South Africa
Abstract

Electricity production by the Electricity Supply Commission of South
Africa (Eskom) is the most important beneficiation process for South African
coal. As one of the world’s lowest cost producers, energy-intensive industries
such as ferroalloys and aluminium were introduced. However the poor were
neglected. The white paper on energy policy (Department of Minerals and Energy,
1998) sought to redress this. Also, chasing economic growth to generate jobs
resulted in high electricity demand and interruptions. Lifespan estimates of
South African coal reserves based upon peak theory vary widely. Approaching
peak, coal production in the future will be more expensive and, thus, contribute
to more expensive electricity, which could inhibit industrial development unless
South Africans work smarter.
Keywords: Electricity, South Africa, Eskom, Energy policy, Load-shedding, Coal reserves, Peak theory
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Publication: CIM Journal
Issue: 4
Volume: 2
Year: 2011
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Issue: 4
Volume: 2
Year: 2011
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Author(s): B. D. Thompson, M. W. Grabinsky and W. F. Bawden
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Issue: 4
Volume: 2
Year: 2011
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Summary: The Maras salt terraces, located between Cuzco and Urubamba in the Andes (southern Peru), are living examples of traditional Incan salt production, where present-day artisanal miners produce salt from shallow pans by solar evaporation. In these terraces, natural spring water, eight to nine times saltier than seawater, is used to produce the salt. The field observations and chemical analyses show that the poorly crystalline traditional salt is finer in particle size and contains impurities...
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Author(s): H. Aral, M. I. Pownceby, P. Moreno
Keywords: Maras-Cuzco Peru, Salt mining, Incan salt terraces, Artisanal salt
Issue: 4
Volume: 2
Year: 2011
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Summary: Falcon concentrators are enhanced gravity separators designed for concentrating fine particles. The Falcon UF model is unique in that it is dedicated to beneficiation of ultrafines, one key feature being that it does not make use of any fluidization water. We investigated the physics of particle transport inside Falcon concentrators, and concluded that separation efficiency is governed by differential settling velocity. We derived and published a predictive model of the partition function...
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Issue: 4
Volume: 2
Year: 2011
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Summary: One-twentieth-scale field trials for conventional and concept dipper designs were compared to mid- and ultra-class-sized conventional dipper performance. Digging effort was used as the performance indicator for comparison. It was shown that linear relationships exist between dipper capacity, suspended hoist load, and peak hoist load. A ratio of conventional and concept dipper performance at the 1/20th scale was then evaluated to allow prediction of the performance of an ultra-class concept...
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Author(s): T. G. Joseph, N. Shi
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Issue: 4
Volume: 2
Year: 2011
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