DOI: /PPMP140207 Corpus ID: . INFLUENCE OF LEAD NITRATE ON CYANIDE LEACHING OF GOLD AND SILVER FROM TURKISH GOLD ORES article{Sayiner2014INFLUENCEOL, title={INFLUENCE OF LEAD NITRATE ON CYANIDE LEACHING OF GOLD AND SILVER FROM TURKISH GOLD ORES}, author={B. Sayiner}, .
In recent year, some researchers have found that the kinetics of leaching of silver using thiosulfate are controlled by the mass transfer of oxygen to the solidliquid interface (Rivera et al., 2015).
· In the second stage, leaching of gold and silver values with ammonium thiosulfate was performed, and this yielded a removal of % silver and gold % with a liquid–solid ratio of 2:1. Thiosulfate consumption was g/L, which is economically affordable for this head ore with gold and silver content of g/ton and 310 g/ton, respectively.
Aug 12, 2021 · Silver sodium thiosulphate is a silver complex used as a postharvest conditioner. A nonvolatile aqueous solution of silver and thiosulphate ions. No significant human health concerns identified. No significant environmental concerns highlighted relateddirectly to its use however wastes must not reach the public sewer as there is a risk to ...
G. AlvaradoMacías, FuentesAceituno, F. NavaAlonso, Study of silver leaching with the thiosulfate–nitrite–copper alternative system: Effect of thiosulfate concentration and leaching temperature, Minerals Engineering, Vol. 86, 2016
leaching gold and silver, easy to get and manipulate. This work is done in the Technological Institute of Parral in a lowgrade ore from the southern region of the state of Chihuahua. This document has been enriched presented in the IMEC 2014, with the increase of series V and VI. Key words: Leaching, cyanide, ammonium thiosulfate. 1. Introduction
· Effective silver recovery is usually restricted by either environmental pollution or high recovery costs. To tackle the issues, this study introduces a novel method for the effective recovery of silver by utilizing the alkaline sodium thiosulfatepotassium ferricyanide leaching system. The reaction kinetics of silver dissolution in this system was investigated via the rotating disk electrode ...
Nov 01, 2019 · Cyanidation is the main process in gold leaching. There are several parameters that affect gold recovery and cyanide consumption. In this paper, the effect of the oxidative pretreatment and lead nitrate addition on the cyanidation of Zarshuran refractory gold ore containing ppm Au, % As, and % sulfur were investigated. Au recovery was increased from % to % in the .
The leaching of silver sulfide with the thiosulfate–ammonia–cupric ion system. Hydrometallurgy 1998, 50, 243–260. [Google Scholar] AlvaradoMacías, G.; FuentesAceituno, ; NavaAlonso, F. Study of silver leaching with the thiosulfatenitritecopper alternative system: Effect of thiosulfate concentration and leaching temperature.
Mar 26, 2011 · Leaching from silver sulfide using a copperthiosulfate solution in the absence of ammonia was investigated. It is found that silver sulfide could be effectively dissolved in the copperthiosulfate system without ammonia. The effects of thiosulfate concentration, copper tothiosulfate ratio, agitation vigorousness, pH values, and dissolved gases on the leaching of silver sulfide with the ...
· The leaching tests were carried out with sodium thiosulfate, glycine and sodium thiosulfateglycine to compare the efficiency and stability of extractants in the recovery of gold and silver. All tests were carried out under the following conditions: 1000 g of mineral with 1000, 2000 and 3000 ml of solution (liquid–solid ratio 1:1, 2:1 and 3:1).
electrochemical aspects of gold and silver leaching with ammoniacal thiosulphate and compares alternative lixiviants such as cyanide and chloride/hypochlorite. In general, the rate of leaching with M thiosulphate containing 10 mM Cu(II) and M NH3 was similar to the rate with air saturated 5 mM
Leaching with the mixture of thiosulfatenitritesulfitecopper G. AlvaradoMacías et al. 32) investigated silver leaching with the system of thiosulfatenitritecopper ions. It was found that the complexes of copper and ammonia can alyze the silver dissolution.
Recovering the silver 4 Silver is recovered from heap leach solutions in one of several ways. Most common is MerrillCrowe precipitation, which uses fine zinc dust to precipitate the precious metal from the solution. The silver precipitate is then filtered off, melted, and made into bullion bars.
silver extraction from an arsenical refractory ore. Direct cyanidation of the ore (d 80: 50µm) led to a low silver extraction of≤70% over 24h. leaching period. Extraction of silver in cyanide leaching was improved to 85% after ultrafine grinding. In comparison, up to 98% of silver extraction was achieved in thiosulphate leaching
Thiosulfate is a promising alternative for leaching silver sulfide ores such as those at the epithermal Yanacocha deposit. These ores suffer from low silver recovery, high mercury extraction and environmental challenges when treated with conventional cyanide. In this study, cupricammonia, ferricethylenediaminetetraacetic acid (EDTA), ferricoxalate and ferriccitrate are tested with ...
Silver is commonly present in acanthite in nature. Reagents like cyanide are used to extract silver from acanthite ores. However, cyanide can potentially damage human health and environment. The use of cyanide is tightly regulated, thus forcing the industry to seek for alternatives. Thiosulfate is currently the most promising alternative. The leaching chemistry of silver with thiosulfate is ...
· Silver is recovered from the leaching solution of the spent Ag/αAl 2 O 3 alyst by solvent extraction. Most of the silver in the spent alyst was dissolved by using HNO 3 solution. The parameters such as concentration of lixiviant, reaction temperature, pulp density, and stirring speed, which might affect the dissolution of silver from the spent alyst, were investigated.