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Mediciones de Eh, Disolución de oxígeno y pH<br />
con adición de hierro<br />
just after grind<br />
Inside of flotation cell *<br />
Iron (g)<br />
addition<br />
pH<br />
(± 0.0 1 )<br />
Eh<br />
(± 1 mV)<br />
D.O.<br />
(± 0.02 ppm)<br />
pH<br />
(± 0.0 1 )<br />
Eh<br />
(± 1 mV)<br />
D.O.<br />
( ±0.02 ppm)<br />
0<br />
8.04<br />
269<br />
1.7<br />
8.02<br />
261<br />
5.58<br />
6<br />
8.06<br />
197<br />
0.23<br />
8.02<br />
145<br />
3.4<br />
15<br />
7.96<br />
53<br />
0.01<br />
8.02<br />
109<br />
2.13<br />
<strong>20</strong><br />
8.04<br />
44<br />
0.00<br />
8.00<br />
56<br />
0.44<br />
Eh (mV vs SHE)<br />
350<br />
300<br />
250<br />
<strong>20</strong>0<br />
150<br />
100<br />
50<br />
NaOH<br />
addition<br />
Na.E.X. +<br />
MIBC<br />
addition<br />
Betw een<br />
A and B<br />
Second<br />
reagent<br />
addition<br />
Convergencia de<br />
valores de D.O. al<br />
final de flotación<br />
debido a la adición de<br />
aire.<br />
(Bradshaw et al, <strong>20</strong>06)<br />
0<br />
st 1 st 2 st 3 st 4 st 5 st 6<br />
0 1<strong>20</strong> 240 360 480 600 7<strong>20</strong><br />
Flotation stage (time in second)<br />
0 g 2 g 6 g 10 g 15 g <strong>20</strong> g
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