Institut za rudarstvo i metalurgiju Bor
Institut za rudarstvo i metalurgiju Bor
Institut za rudarstvo i metalurgiju Bor
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Sadržaj klase -75μm , %<br />
100<br />
80<br />
60<br />
40<br />
20<br />
0<br />
0 5 10 15 20 25 30<br />
Vreme mlevenja , min<br />
Figure 2. Dependence of size-class content -75μm on grinding time<br />
The experiments of basic flotation<br />
were carried on the samples of ground<br />
smelter slag under the same conditions but<br />
with various grinding fineness, in order to<br />
determine the effect on copper recovery.<br />
All experiments of basic flotation were<br />
carried out in the Denver flotation<br />
machine, chamber volume of 2.4 dm 3<br />
rotor speed of 1500 min -1 . Table 5<br />
presents the results of experiments.<br />
Table 5. Experimental results of basic flotation<br />
Size-class<br />
content-<br />
75μm, %<br />
Product m, % Cu, %<br />
Distribution<br />
Cu, %<br />
U 100,00 0,6864 100,00<br />
65%<br />
K 10,57 2,78 42,80<br />
J 89,43 0,439 57,20<br />
U 100,00 0,7072 100,00<br />
70%<br />
K 12,62 2,62 46,75<br />
J 87,38 0,431 53,25<br />
U 100,00 0,7086 100,00<br />
80%<br />
K 16,44 2,14 49,65<br />
J 83,56 0,427 50,35<br />
U 100,00 0,7272 100,00<br />
85%<br />
K 16,56 2,25 51,24<br />
J 83,44 0,425 48,76<br />
U 100,00 0,7146 100,00<br />
90%<br />
K 20,20 1,89 53,43<br />
J 79,80 0,417 46,57<br />
Figure 3 presents dependence of copper<br />
recovery on grinding fineness.<br />
No 1,2010. 113<br />
MINING ENGINEERING
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