PILOT PLANT
A number of continuous pilot plant campaigns have been completed in Australia and North America applying the process directly to effluent streams of operating gold mines.
Two pilot plants were used, each with a capacity of 10m3/day of pulp or solution. The plants were designed toclosely represent the flowsheets of industrial operations. Features of the plants include:
Multi-stage contactors Counter current flow of resin and slurry Staged elution of loaded resin for metals and cyanide Cyanide recovery system.
Each campaign demonstrated the resin’s high efficiency in recovering cyanide and metals. Typical pilot plant results are shown in Table 2 below.
Table 2 - Cyanide & Copper Recoveries
SPECIES
FEED SLURRY (PPM) TREATED SLURRY (PPM)
RECOVERY (%)
159 159 205 45
0.12 0.12 0.23 0.13
99.9 99.9 99.9 99.7
CnFree CNWAD CNTotal Copper
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