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Gabriela Mistral mine

Mexico: Second Solar Process Heat Case Study on Copper Mining

Submitted by Baerbel Epp on December 1, 2016
Mexico Copper MineArcon-Sunmark has announced the completion of a second solar-heated copper mine project. In September 2016, the Danish company installed a 6,270 m² collector field (4.4 MWth) at La Parreña in central Mexico. A 30 September press release said that the solar field would cover 58 % of the mine’s demand for heat. The field consists of 456 components of nearly 14 m² each and a storage tank of 660 m³. The first project of its kind, a field of 39,300 m² (27.5 MWth), was completed with a joint-venture partner at the Gabriela Mistral mine in Chile in 2013. Being the world’s largest solar system for process heat application, it had produced 142,000 MWh in the first 35 months of operation, the press release said. This corresponds to a specific yield of 1,112 kWh per m² and year. 
Photo: Arcon-Sunmark
 

Chile: Consistent Electrolytic Bath Temperature Control Increases Copper Cathode Quality

Submitted by Baerbel Epp on November 28, 2016
Ian NelsonPampa Elvira Solar (PES) operates the largest solar process heat installation worldwide, a 27.5 MWth collector field at the Gabriela Mistral mine in Chile. “It´s an every-day, every-hour struggle to harvest the sun and earn our wages, so we may continue the very humble – and much too often neglected – business of running a solar heat-delivering system in the middle of the desert,” said Ian Nelson, General Manager of Pampa Elvira Solar. Solarthermalworld.org spoke with him about dust problems, the opportunities of concentrating collectors, the challenges of ESCO operation and improved copper cathodes. Five-and-a-half years ago, the engineer started at Energía Llaima, an independent producer of hydro and solar thermal solutions. PES, which was founded in 2012, is a consortium of Danish company Arcon-Sunmark and Energía Llaima. 
Photo: Pampa Elvira Solar
 

Solar Process Heat in Chile: “It is essential to use the ESCO model”

Submitted by Baerbel Epp on November 21, 2016
Roberto RomanThe world’s largest process heat installation has recently completed its third year of operation. The 39,000 m² collector field, which went online in October 2013 at Codelco´s Gabriela Mistral mine, is located 100 kilometres south of the town of Calama in Chile´s high central desert. Planning, delivery and installation of the solar field were done by Chilean-Danish joint-venture Pampa Elvira Solar, which has since been the operator of the system as well. The plant provides around 80 % of the energy required for the last step in copper production, the electrolytic refining of the metal in an acid bath. Solarthermalworld.org spoke with Roberto Roman, Associate Professor at the Faculty of Physics and Mathematical Sciences of the University of Chile. Roman has been part of a university team advising Codelco, Chile´s state-owned mining company, on solar mining from the very beginning.
Photo: Taken from the video interview at the Eurosun 2016
 

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