Group 10 Lecturer:Imre Gombköt ő University of Miskolc - Hungary Students:Friedrich Jagnow Jonas Finke Stefan Lohberger International Project Week Fh Nordhausen.

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Presentation transcript:

Group 10 Lecturer:Imre Gombköt ő University of Miskolc - Hungary Students:Friedrich Jagnow Jonas Finke Stefan Lohberger International Project Week Fh Nordhausen

Imaginary mining facility : Case study A new explored ore field south of Goslar is to be exploited. Think about the handling and storage of tailings and its risks metric tonnes of ore 14% Zn, 6% Pb, 5% Cu, 1 g/t Au, 140 g/t Ag and 20% barite 500 to 900 meters deepth Nearby existing mining facilities pic. By Harz Minerals GmbH

Tailings are a waste product of the ore processing. Suspension of water and fine rock particles Often contain dangerous chemicals and components like heavy metals, cyanide and acids Risks depend on mineralogy, mining technology, mineral processing and the method of deposition International Project Week Fh Nordhausen

barite content is useful ARD: acid generating potential because of sulfidic mineral components especially pyrite Heavy metal content is able to mobilise International Project Week Fh Nordhausen

Underground mining Open pit International Project Week Fh Nordhausen

Partical size below 200 mikrometers Flocculant (polymers) Flotation agents such as: organic collectors (xanthate), pH-regulators (sodium hydroxide, sulfidic acid) depressors (sodium cyanide) frothers (alcohols) International Project Week Fh Nordhausen

Approximately 8 Mio m³ of solid waste Together with app 800,000 m³ water International Project Week Fh Nordhausen

Contamination of groundwater through heavy metals, acidic water Toxic free Sodium Cyanide Damage to flora & fauna Risk of unexpected human activity International Project Week Fh Nordhausen

Contamination of groundwater and surface water through heavy metals and acidic water Toxic free Sodium Cyanide The possibility of i nsuficiant capacity of the cavities International Project Week Fh Nordhausen

Similar risks like open pit method Additionally dusting dam failure due to erosion, overtopping or liquefaction of the dam caused by vibration (blasting) International Project Week Fh Nordhausen

Finish Group 10 Lecturer:Imre Gombköt ő University of Miskolc Students:Friedrich Jagnow Jonas Finke Stefan Lohberger International Project Week Fh Nordhausen

Google Earth imagery open pit mining: underground mining: jaw: International Project Week Fh Nordhausen

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