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 ...
and silver. To get a loaded carbon or gold bearing carbon in a carbonin leach process, the active carbon is included a in slurry and serves as the adsorbent for gold and silver. Later, the loaded carbon will release the metals, both and silver, gold through desorption process. Goldsilver in rich solution is then extracted through
Gold is desorbed from activated carbon by contacting, at a temperature of about 70° to 160° C., with a solution comprising about 20 to 30 percent by volume of a water soluble alcohol and about 80 to 70 percent by volume of an aqueous solution of a strong base.
Jan 01, 1988· Gold desorption from activated carbon with dilute NaOH/organic solvent mixtures. Hydrometallurgy, 19: 321 333. This paper presents a study of the desorption of gold adsorbed onto activated carbon using mixtures of dilute NaOH and different organic solvents.
Desorption of gold loaded carbon The experimental study shows that the adsorption process of activated carbon is actually a reversible process. When activated carbon adsorbs gold, excessive temperature, pressure, PH value and cyanide concentration will significantly reduce the amount of gold
Elnathan, F. The effect of activated carbon particle size on gold cyanide adsorption and elution. University of Utah. Espiell, F., Roca, A., Cruells, M. and Núñez, C. Gold desorption from activated carbon with dilute NaOH/organic solvent mixtures, Hydrometallurgy, 19, pp. 321333. doi: 10.1016/0304 386X90038 2.
Jun 28, 1993· Activated carbon is used worldwide for the extraction of gold cyanide from leached pulps. The elution of gold cyanide is usually conducted by soaking the loaded carbon in an alkaline solution of cyanide in a column, followed by a rinse with water at temperatures higher than 100° C.
Gold is desorbed from activated carbon by contacting, at a temperature of about 70° to 160° C., with a solution comprising about 20 to 30 percent by volume of a water soluble alcohol and about 80...