Problem 2
A dry flotation concentrates of composition (%)
 is smelted in a reverberatory furnace using air. 65% of total sulphur is oxidized to  , and other products are matte and slag.
All is present as  .Perform materials and heat balance.
For the calculations the gas, matte and slag leave the furnace at 1500K.
Material balance for 100 g concentrated
Matte |
(g) |
Slag |
g |
Gases |
(gmole |
Cu2S |
32.5 |
FeO |
21.3 |
SO2 |
0.548 |
FeS |
8.1 |
SiO2 |
15.0 |
N2 |
2.616 |
|
|
Al2O3 |
1.0 |
|
|
|
|
CaO |
6.5 |
|
|
|
Some Thermo chemical data are given in lecture 21.
Heat of decomposition of 
Cal/mole
Heat input and output can be calculated from the data given above.
|
