Institut za rudarstvo i metalurgiju Bor

Iskorišcenje bakra u osnovnom koncentratu , %
54
52
50
48
46
44
42
65 70 75 80 85 90
Sadržaj klase -75μm , %
Figure 3. Dependence of copper recovery in basic concentrate on grinding fineness.
DISCUSSION OF THE RESULTS
The obtained results indicate that, if
the grinding fineness is increased from 65
to 90% of participation of size-class
-75 μm , copper recovery in basic concentrate
is increased from 42.80 to 53.43%.
Increase of grinding fineness also causes
the important increase of electric energy
and metal consumption. However, each
percentage of increase the copper recovery
is very important from an aspect of production
efficiency, since it is rather a strategic
ram material with price on the world
market of over 7000 US$.[3]
CONCLUSION
Techno-genetic copper deposit, Slag
Depot 1, in addition to the environmental
problem, is at the same time an important
raw material resource with significant
content of copper, gold and silver. Many
years back, the useful metals are recovered
from the smelter slag using the flotation
concentration method. Until now,
there are no successful results, and research
continues to improve the technoeconomic
indicators. This paper presents
the possibility for increasing the copper
recovery in basic concentrate by increasing
the grinding fineness. The future researches
would show to what limits the
grinding fineness should be increased, and
that the costs of energy and metal do not
exceed the positive effects, realized by
copper recovery.
Acknowledegements
This work has resulted from the project
funded by the Ministry of Science of the
Republic of Serbia, No. 17016 on which the
authors of this occasion want to thank.
REFERENCES
[1] Prvan Ignjatović et al., Project Report
on Reserves of Techno-Genetic
Copper Deposit, Slag Depot 1 in Bor,
Condition on 32.12.2005, Copper
Institute Bor, 2006 (in Serbian)
[2] General Mining Project of Slag
Excavation from the Techno-genetic
Deposit, Slag Depot 1, Verification of
Technological Process for Concentrate
Production and Elevation of the
Flotation Tailing Dump RTH in Bor up
to k+378 for the Annual Production of
1,200,000 t of slag, Mining and
Metallurgy Institute Bor, 2008 (in
Serbian)
[3] http://www.basemetals.com/copper/
13.3.2010
No 1,2010. 114
MINING ENGINEERING