|
M2M-Projects have outstanding project economics such as a payback period of less than 1 year, resulting from:
-
residue reduction of some 8%
-
production increase of some 4% without additional bauxite supply,
at very low operating costs and at current specific energy consumption
-
short construction time.
|
| Smelter Grade Alumina prodcution increase |
80 |
kt/y |
Operating costs, incl. calcination, fixed costs etc. |
35 |
US$/t SGA |
| Total investment |
14 |
MUS$ |
| Capital cost per annual ton capacity |
175 |
US$/an t |
| Construction time |
8 |
months |
| Internal Rate of Return (Earning Power) |
65 |
% |
| Net Present Value at 8% discount rate |
75 |
MUS$ |
Assumptions: Alumina price 200 $/t, tax rate 35%, linear depreciation over 20 years.
Some 4% surplus capacity in precipitation, calcination, utilities and alumina handling areas. |
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