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~' <br />1 <br />1 <br />I <br />'.. <br />1 <br />1 <br />. .. <br />.._ - . <br />~..... . <br />Page e <br />.TABLE 4 <br />CHEMICAL CHARACTERISTICS FOLLOWING CYANIDE RECOVERY <br />-Parometert'''r Concentratlon Range Average Concentratlon <br />-" ArsenlC • . <br />• ` ' .0.01 - 0.02 0.01' <br />Cadmlurri. <br />~ ~' 0.004 - 0.004 0.004 <br />Chromium <0.01 - <0.02 <0.02 <br />- Cobalt 0.15 - 0.18 0.16 <br />Copper 0.28 - 0.55 0.39 <br />Iron 0.05 - 0.09 O.OT <br />Lead 0.05 - 0.20 0.10 <br />Mercury 0.013 - 0.015 0.014 <br />Nickel 2.05 - 0.10 0.091 <br />Silver 0.5 - 1.1 0.9 <br />Zinc 0.04 - 0.13 0.091 <br />Thlocyanate 27.4 -36.6 31.3 <br />Total Cyanide 1.3 - 2.3 1.7 <br />Method-C Cyankle 0.7 - 1.6 1 2 <br />Ammonia (as N) 13.8 - 21.3 18.6 <br />Nitrate (as N) 20.0 - 31.4 25.4 <br />Sulfate 1200 - 1600 1450 <br />pH (in pH unRs) 9.5 - 9.8 ------ <br />t't Ali concentrations In mg(I, unless otherwise stated. <br />t" All values are the result of direct analysis of the samples. <br />TABLE b <br />RESULTS OF THE CANMET BENCH-SCALE AVR STUDIES <br />Mine and Barren Solution Parameter Concetration t'r <br />Chemistry Belore <br />and After AVR ~N'? SCN . ,~ Zn Ni Fe <br />Kerr Addison <br />- Barren Feed 60 47 14 10 6 0.8 <br />- AVR Treated Effluent <0.10 <1 0.3 0.01 0.05 <0.1 <br />Dome <br />- Barren Feed 23 -- 12 8 2 ~ -- <br />-AVR Treated Effluent <0.10 14 0.09 0.2 ..: , 0.2 0.2 <br />Giant Yellowknlle <br />- Barren Feed 260 50 77 98 6 11 <br />-AVR Treated Effluent <0.10 57 0.3 0.1 <0.03 <0.03 <br />Hollinger Roas <br />- Barren Feed 610 540 310 82 1 11 <br />-AVR Treated Effluent 4,16 300-370 4 <0.01-8.0 0.2 <0.03-0.08 <br />Pamour <br />-Barren Feed 990 1530 310 86 230 1 <br />- AVR Treated Effluent <0.1-0 1180-1320 0.3 - 2 <0.01 0.1-2 <0.03-.01 <br />~'~ All values In mg/I, unless otherwise stated. <br />~'t Total cyanide es measured by the picric acid cotorlmetric method. <br />