Metallurgy Flashcards
1
Q
Bauxite
A
Al2O3.xH2O
2
Q
Cryolite
A
Na3AlF6
3
Q
Kaolinite
A
[Al2(OH)4Si2O5]
4
Q
Haematite
A
Fe2O3
5
Q
Magnetite
A
Fe3O4
6
Q
Siderite
A
FeCO3
7
Q
Iron pyrite
A
FeS2
8
Q
Copper pyrites
A
CuFeS2
9
Q
Malachite
A
CuCO3.Cu(OH)2
10
Q
Cuprite
A
Cu2O
11
Q
Copper glance
A
Cu2S
12
Q
Sphalerite
A
ZnS aka Zinc blende
13
Q
Calamine
A
ZnCO3
14
Q
Zincite
A
ZnO
15
Q
Composition of ruby
A
Al2O3 + Cr (impurity)
16
Q
Composition of sapphire
A
Al2O3 + Co (impurity)
17
Q
Froth flotation process: which ores, collectors, froth stabilisers, depressants (purpose + eg)
A
Sulphide ores
Froth is of mineral
Collectors: pine oils, fatty acids, xanthates. Enhance non wettability of mineral
Froth stabilisers: cresol, aniline. Stabilise froth
Depressants: if ZnS + PbS, use NaCN, only PbS will make froth
