New Technology for Recovery of Gold and Silver by Pressure Cyanidation Leaching and Electrocoagulation

Parga, José R.; Valenzuela, Jorge; Díaz, José Antonio Acevedo

doi:10.5772/32673

Cited by 2 publications

(2 citation statements)

References 18 publications

(12 reference statements)

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“…In this case, it seemed that solid fraction of 25% was the best condition for gold and silver desorption. Effect of percent solids in the extraction of gold and silver had been studied by Parga, Valenzuela and Díaz (2012). His research reveals that the bigger the % solid the smaller the gold and silver extractions.…”

Section: Resultsmentioning

confidence: 99%

“…His research reveals that the bigger the % solid the smaller the gold and silver extractions. Parga, Valenzuela and Díaz (2012) assumed that the increased apparent viscosity of the slurry impeded good oxygen dispersion in the system. Three experiments regarding gold desorption using % solid as a varying parameter confirms Parga et al's statements.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Desorption of gold and silver from activated carbon

Tahli¹,

Wahyudi²

2017

IMJ

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Experiments of gold and silver elution were conducted using several parameters, either fixed or varying parameters. Ethanol volume, temperature and percent solid belonged to varying parameters while loaded carbon, stirring rate, concentrations of NaOH and NaCN served as fixed parameters. The experiment results showed that the optimum condition for such a process included 20% of ethanol volume, 80°C of temperature and solid fraction of 25%. Using such condition, the experiment was conducted for 10-hour contact time and yielded the highest desorption percentages for gold and silver, namely 80.10 and 70.73% respectively. The derived contents of gold and silver were 295.16 and 159.38 ppm while their achieved weights were 56.080 and 30.601 µ g. The fact that the achieved contents of gold and silver was close to the requirements for electrowinning process, it is suggested that the next process using a semicontinue one in terms of gaining a result that satisfies the requirement for electrowinning.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%