Mining, Mineral Processing, and Energy Resources (Grade 11 NSC Matric Physical Sciences): Flashcards
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Most abundant element in Earth's crust
Most abundant element in Earth's crust
Oxygen (O)
Max depth for surface mining
Max depth for surface mining
1000m from the surface
Smelting
Smelting
Heating ore to high temps with reducing agents to extract metals
Leaching
Leaching
Using liquids (acids) to dissolve minerals
Gold cyanidation equation
Gold cyanidation equation
Gold's change in cyanidation
Gold's change in cyanidation
Oxidised
Gold's durability property
Gold's durability property
Does not tarnish or corrode easily
Panning technique
Panning technique
Uses water & gravity to separate dense gold from lighter material
Mine rehabilitation
Mine rehabilitation
Restoring old mine sites to safe, stable conditions
Main current energy sources
Main current energy sources
Oil and coal