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leaching of gold by low concentration thiosulfate solution

effect of additives on thiosulfate leaching of a gold ore

s.j. dai et al.: effect of additives on thiosulfate leaching of a gold ore 50 the leaching of sulfide minerals increased with the addition of edta as reflected by the increased sulfur concentration in solution. cmc slightly increased gold recovery at low concentration but hindered gold leaching at a high concentration. at

thiosulfate leaching of gold - a review - researchgate

the low gold concentration enables an important demonstration of the selectivity of ts [32]. investigated parameters were among others: concentration of ts ammonia and copper-sulfate leaching

thiosulfate leaching of gold - a review request pdf

the low gold concentration enables an important demonstration of the selectivity of ts [32]. investigated parameters were among others: concentration of ts ammonia and copper-sulfate leaching

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sodium thiosulphate gold leaching

the gold industry has been seeking alternative reagents for leaching gold from low-grade ores for the past 25 years. the cost and transport of cyanide the poor recovery of gold from carbonaceous ores the lack of selectivity of cyanide towards copper minerals and the cost of waste treatment are real factors which can make cyanide unattractive in some circumstances.

need a pressure washer recommendation - july 2015 - forums

need a pressure washer recommendation if you want to disolve gold you need "aqua regia" (royal water) which is a mixture of hcl and kno3 (nitric acid). then appling a 1% sodium hydroxide

thiosulphate leaching – an alternative to cyanidation in

equivalent rates of gold leaching and a typical thiosulphate leach solution will have a reagent concentration of 5 to 20 g/l versus a cyanide concentration of only 0.25 to 1 g/l. the higher concentration of thiosulphate required leads to higher reagent consumption which is at least

thiosulfate leaching of gold—a review - sciencedirect

by virtue of the fact that gold thiosulfate adsorption on to carbon is low thiosulfate leaching of carbonaceous ores is potentially economical therefore attracting significant industry research. hemmati et al. (1989) investigated the thiosulfate leaching of gold from carbonaceous ore that contained 2.5% organic carbon.

thiosulfate leaching of gold—a review - sciencedirect

thiosulfate leaching can be considered a non-toxic process the gold dissolution rates can be faster than conventional cyanidation and due to the decreased interference of foreign cations high gold recoveries can be obtained from the thiosulfate leaching of complex and carbonaceous-type ores. in addition thiosulfate can be cheaper than cyanide.

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