Metal extraction Flashcards
1
Q
What is meant by native
A
metal found pure in the ground
2
Q
what are most metals found as in the ground
A
metal ores
3
Q
how do you define a metal ore
A
if a metal can be extracted for profit from the compounds in a rock, the rock is then an ore
4
Q
what do we use to decide how to extract metals
A
reactivity series
5
Q
What is phytomining
A
a way of extracting copper from low quality ores
6
Q
how does phytomining work
A
you put plants in soil which contains low grade copper ore
once the plants have grown you burn them and extract copper from the ash left
7
Q
what is bioleaching
A
when bacteria feed on low grade metal ores
8
Q
how does bioleaching extract ores
A
a solution of copper ions can be made from the waste of copper ore
it is a slow process
