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#0183;#32;2 Cyanidation Test on Flotation Concentrate, Gamp;T Metallurgical Project KM2138, December 12, 2007 3 Mineral Processing Review of Spanish Mountain Project for Skygold Ventures Ltd, Gary Hawthorn, P. Eng, January 4, 2008 4 Progress Report No. 1, Spanish Mountain Gold Project, Gamp;T Metallurgical Services Project KM2637, August 30, 2010
The flotation results showed that the enrichment ratio of gold was relevant to that of carbon, indicating that gold occurred in close association with carbon. A concentrate containing gold g/t and carbon % was obtained, with gold recovery % and carbon recovery %.
Location: Tanzania Mineral Ore Type: Sulfide type gold ore Raw Ore Grade: 6 G/T Final Product: flotation concentrate Recovery Rate: 88% Plant Capacity: 1000 T/D Technological Process: crushing amp; sieving + ball mill grinding amp; classification + flotation + thickening amp; filtering At first the Owner is looking for cyanide leaching solution for his gold ore.
The other flotation concentrate had much lesser gold grade (17 g/t) and, hence, produced a biooxidised product of 23 g/t gold grade. Different proportions of minerals such as quartz, muscovite, illite, gypsum, albite, ephesite, bassanite, jarosite, larnite, rutile, chamosite, pyrite, apatite, goethite and arsenopyrite were observed in the samples.
#0183;#32;This plant uses conventional flotation (roughercleaner stages), and gold concentrate grades are usually in the range of 7090 g/t gold (Valderrama et al., 1995). The effect of flowrate is similar to that obtained before and once again, the 3PC concentrates result richer than those obtained in the conventional cell.
Concentrate gold grades and recoveries in the cleaner stages ranged from 68 g/t to 331 g/t gold and 55% to 83%, respectively. Overall gold recoveries (gravity and flotation) for the test work
Concentrate gold grades and recoveries in the cleaner stages ranged from 68 g/t to 331 g/t gold and 55% to 83%, respectively. Overall gold recoveries (gravity and flotation) for the test work
#0183;#32;Flotation feed grades were g/t and g/t gold, respectively. Cleaner concentrate grades ranged from 105 g/t to 637 g/t gold. Flotation gold recoveries ranged from 77% to 80%. Overall recovery (gravity and flotation) for all laboratory tests presented in Table 1 exceeded 90% gold recovery.
Gold Flotation Line Dressing Processing Plant in Tanzania . Location Tanzania Mineral Ore Type Sulfide type gold ore Raw Ore Grade 6 G/T Final Product flotation concentrate Recovery Rate 88% Plant Capacity 1000 T/D Technological Process crushing sieving + ball mill grinding classification + flotation + thickening filtering At first the Owner is looking for cyanide leaching solution for his
Gold grade of the head flotation concentrate was g/t. The concentrate size was 80% 80 um. Mineral composition of the concentrate comprises 17% of rockforming minerals, 59% of pyrite and 24% of arsenopyrite. Gold size (Figure 3) in the concentrate of interest was less than 1015 um, some gold
Of note, Sample EC26 returned g/t gold ( oz/t) with % arsenic. This is a classic example of a high gold/arsenic concentrate from the district, which has a limited enduser market. The assays also showed substantial amounts of iron and sulphidesulphur, which are essential for successful bioleaching.
Closedcircuit trials of gold flotation yielded a gold concentrate that assayed at g#183;t#185; Au with a recovery of %. The gold concentrate leaching rate was %.
#0183;#32;Flotation recovery of gold from tailings was as much as 15%, with concentrate grades higher than 160 g/t. As a cleaning stage in leadzinc ore flotation, recoveries of both sulfides were of the order of 9294% with grades up to 8082%, as compared to 70% in the quot;conventionalquot; column.
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