Regenerative Energie
EMIRSA has used NaCN as leaching agent from the beginning at the Kori Kollo gold mine and does so until today. During the project of oxidised ores (1982-1992) heap leaching and subsequently the Merrill-Crowe-Process (precipitation with zinc dust) were applied, gaining a gold precipitate as product. The metallurgical process was changed with the mining of sulphide ores (1992-2003) in favour of leaching in agitated tanks including CIL (carbon-in-leach), followed by electrolysis and casting of bars of doré (an alloy of gold and silver).
The Kori Kollo gold mine is located about 200 km south-east of La Paz, Bolivia. It is run by Empresa Minera Inti Raymi S.A. (EMIRSA). EMIRSA has been undertaking open-pit mining at this site since 1982. The mining activities can be divided into five phases, involving oxidised and sulphide ores. This study provides an independent opinion on EMIRSA’s performance at the Kori Kollo gold mine between 1982-2003 against concepts of best practice cyanide management, such as published by the Australian government. The discussion of the topic draws upon selected sources of information, using the Environmental Declaration ('Manifiesto Ambientalâ€) dating from 1997 (including subsequent amendments) as the main document of EMIRSA’s environmental concern and behaviour.
| Copyright: | © Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben |
| Quelle: | Depotech 2008 (November 2008) |
| Seiten: | 4 |
| Preis: | € 2,00 |
| Autor: | Thomas Reichard Em.o.Univ.-Prof. Dr.-Ing. Karl E. Lorber Jaime A. Rocha Valenzuela |
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Hochlauf der Wasserstoffwirtschaft
© Lexxion Verlagsgesellschaft mbH (8/2024)
Überblick über und Diskussion der Maßnahmen zum beschleunigten Ausbau
der Wasserstoffinfrastruktur in Deutschland
Die innerstaatliche Umsetzung des Pariser Klimaschutzübereinkommens
- ein Rechtsvergleich
© Lexxion Verlagsgesellschaft mbH (8/2024)
Like all public international law treaties, the Paris Climate Accords rely on national law for their implementation. The success of the agreement therefore depends, to a large extent, on the stepstaken or not taken by national governments and legislators as well as on the instruments and mechanisms chosen for this task. Against this background, the present article compares different approaches to the implementation of the Paris Agreement, using court decisions as a means to assess their (legal) effectiveness.
Klimaschutzrecht und Erzeugung erneuerbarer Energien in der Schweiz
© Lexxion Verlagsgesellschaft mbH (8/2024)
Verschachtelte Gesetzgebung unter politischer Ungewissheit