Extraction of Pb Flashcards
1
Q
concentration method (Pb)
A
froth-floatation
2
Q
oxidation method (Pb)
A
roasting
3
Q
products of oxidation (Pb)
A
Pb, SO2, PbSO4
PbSO4 further decomposes into Pb, SO2
4
Q
reduction (Pb)
A
auto-reduction
5
Q
example of self-reducing metals
A
Pb, Cu
6
Q
refining (Pb)
A
- electrolytic refining
2. liquefaction
7
Q
electrolyte (Pb)
A
PbSiF6 + hydrosilicic acid (H2SiF6)
