Tuesday, November 23, 2010

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DESALINATION: Mina Chilean water use




Chilean Mine used to desalinate sea water without





22/11/1910





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Of that amount, spending on infrastructure associated with the use of sea water corresponded to 20%, or U.S. $ 460 million, which offered a much higher return than if you had an option for desalination. Hope used industrially in raw saltwater paying $ 1.20 for the transport of each cubic meter, while desalinated water is used, paid $ 2.20 for desalination and energy for transportation.
After an investment of U.S. $ 460 million, a pipeline of 145 kilometers long, began carrying 630 liters of water sea \u200b\u200bby the second, from the Chilean region of Michilla to Esperanza mine, for their production processes. The project in which exploiting copper, gold and silver, will be the first large scale without using seawater desalination, and will have a processing capacity of 98,000 tonnes per day. Since
at 2,200 meters above sea level will the water freshwater is scarce, the pipeline will "sea water for production processes of a huge mining district screening at one of the driest deserts in the world," said Christian Thiele, CEO of Esperanza. 		mine only fresh water used in the final stages of its processes and 630 liters per second to be pumped from the sea, only 5% will be desalted and added to fresh water already available to the mine for consumption human, to wash the concentrate loading dock and the cooling system of the mill. The total estimated project cost was initially $ 1,900 million but, with the aim of allowing expansion of mining operations, the drive system of seawater was expanded to a capacity of 1,200 liters per second, which is why the total cost of the investment rose to U.S. $ 2,300 million.
Hope, which was begun in mid 2008, will begin operations within the next few weeks and commercial production is scheduled to start in April 2011. In its first 10 years the mine will have a processing capacity of 98,000 tonnes per day, allowing you to produce about 700,000 tons of concentrates containing 191,000 tonnes of copper, 215,000 ounces of gold as the main product and 1.56 million ounces of silver. 		The use of seawater in the Esperanza mine will generate a positive impact on the environment, because it prevents access to fresh water sources in the area, which should be directed primarily consumer human or agriculture.
MPA - Business News Americas Source: Spread this article freely SEE, THINK, WRITE. Greetings
Rodrigo González Fernández
Diploma in Corporate Social Responsibility "UN
Diploma in Knowledge Management" UN

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