|
Table 4 shows a comparative chart with the results obtained for three mines during the gold recovery with ion exchange resins.
Table 4. Results obtained with resins.
|
Mine
|
Gold, g/t
|
Resin
|
Eluant
|
Recovery, %
|
|
Golden Jubilee
|
1.5
|
SBR
|
Zinc cyanide
|
85-90
|
|
Muruntau
|
2.4
|
SBR/WBR
|
Thiourea
|
92-94
|
|
Stilfontein
|
900
|
SBR
|
Thiocyanate
|
91-95
|
The table indicates that strong base resins (SBR) have been chosen considering its high capacity and good kinetic. Recoveries are the best indicative of that, and the differences obtained are due to the type of ore or feed to the resin circuit. As was mentioned, the presence of heavy metals makes difficult the elution process and consequently must be investigated the best eluant. This is reason of different eluant in each plant. |
