The technology accepts the paste thickener underflow, which is introduced onto a woven steel belt (SBF) in a dyke and furrow shape. The paste is subsequently subjected to medium wave infrared radiation (MIR) under vacuum. The symbiosis of both negative pressure (vacuum) and MIR on the SBF provide for evaporation rates whereby 1 kWh power evaporates in excess of 2-3 l of water from a paste. The retention time decides the final paste moisture discarded from the SBF.
“Test work allows for the various different factors to be included in the simulation model for the selection of equipment and the prediction of the plant performance,” he says.
As the major supplier of explosives to the South African mining industry – and further afield in Africa – AEL has concentrated its technological innovation on developing specialised explosives, initiating systems and services that improve safety by optimising blasting efficiencies.
One such risk is the escalation in demand for commodities used in mining projects themselves and increases in prices of those commodities. For example, the recently experienced shortage of tyres for large earthmoving equipment globally was a result of the economic boom in China. The price of steel in South Africa has surged dramatically in the last two years owing to the import pricing parity formula used in South Africa, which makes its steel manufacturers among the most profitable in the world. This impacts the cost of implementing projects in the region and causes problems in managing steel price escalation.
“The plus side, however, is that if the management of mining companies do the right things many of these community and socially related risks can be managed,” Cattaneo says. “One can mitigate risks related to changes in regimes by forming good relationships with a variety of stakeholders including the host government, local suppliers and forming joint ventures.”
Greenhill believes that ALT-X is very much suited to mining and exploration. “South African and African resource-based companies source their labour, technology and of course the resource itself in this region; there is no reason they should need to use entirely foreign capital. South Africa does have an investment environment where one is able to raise capital for listings and the ALT-X listing requirements are appropriate for start up exploration projects, late stage exploration or junior mining projects.”
A further and more concerning restriction on construction capacity is the shortage of human resources in the industry. The construction upswing has stretched resources to the limit. There are only so many teams available. Succession planning is also a problem – it seems that there is a relatively big gap between the older experienced resources and the next level younger entrants. In these market circumstances, it will probably be to the advantage of both the clients and constructors to negotiate upfront participation on new projects and reserve capacity, Smith says. This will ensure that competent teams are allocated to the projects.
platinum mine plant]Johannesburg --- MININGREVIEW.COM --- 12 February, 2008 - The Anglo Platinum group – the world's leading primary producer of platinum group metals (PGMs) – has re-affirmed its confidence in the continued robust demand for platinum, and will continue with its multi-billion rand South African expansion programme in 2008.
operation which showed
a 45% increase in
production in the
second half of 2007]Johannesburg, South Africa --- MININGREVIEW.COM --- 8 February, 2008 - Aquarius Platinum Limited –a focused platinum group metals producer in southern Africa, and listed on the Australian, London and Johannesburg stock exchanges – is living up to its reputation as one of the world’s fastest growing platinum companies.
Gold Fields Driefontein
mine – one of many
affected by the current
power crisis]Johannesburg, South Africa --- MININGREVIEW.COM --- 4 February, 2008 - The new week is off to a promising start in terms of the power crisis which has been disrupting the mining industry for the past ten days.