Recovery of Gold and Silver from Ores by Hydrometallurgical Processing

Eisele, J. A.; Colombo, Alessia; McClelland, G.E.

doi:10.1080/01496398308059918

Cited by 15 publications

(5 citation statements)

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“…In 1952,technology was developed to strip gold from granular activated carbon and allow the carbon to be reused [34,44]. In the early 1950s attempts were made to employ carbon-in-pulp technology to recover gold from ores, but the fixed price of gold and increasing operating costs made the process unprofitable.…”

Section: Adsorptionmentioning

confidence: 99%

Some Recent Developments in Hydrometallurgy

Weir¹

1984

Canadian Metallurgical Quarterly

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The objectives of hydro metallurgy are to extract metals; to purify and concentrate metal bearing solutions; to recover metals; and to render waste streams acceptable for disposal to repositories and the environment. These aspects are discussed by way of examples of plants and processes which have beerl used or developed recently. Cobalt, copper, gold, lead, nickel, silver, uranium and zinc hydrometallurgical applications are discussed. Because of the proliferation of published results and construction of hydrometallurgical facilities, the subject is treated in a cursory manner. The list of references, although extensive, is by no means exhaustive.

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Section: Adsorptionmentioning

confidence: 99%

Some Recent Developments in Hydrometallurgy

Weir¹

1984

Canadian Metallurgical Quarterly

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“…There are several methods for gold recovery from secondary sources, including pyrometallurgy, 13,14 hydrometallurgy, 15,16 ion exchange resins, 17,18 bio-oxidation, 19,20 and cementation. 21,22 However, many of these techniques are limited by drawbacks such as energy demand, operation cost, and the generation of hazardous substances.…”

Section: Introductionmentioning

confidence: 99%

“…There are several methods for gold recovery from secondary sources, including pyrometallurgy, , hydrometallurgy, , ion exchange resins, , bio-oxidation, , and cementation. , However, many of these techniques are limited by drawbacks such as energy demand, operation cost, and the generation of hazardous substances . On the other hand, adsorption has attracted considerable attention due to its sustainability, ease of operation, and low cost compared to other methods .…”

Section: Introductionmentioning

confidence: 99%

Enhanced Removal of Ultratrace Levels of Gold from Wastewater Using Sulfur-Rich Covalent Organic Frameworks

Abubakar,

Das,

Prakasam

et al. 2024

ACS Appl. Mater. Interfaces

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In view of the increasing global demand and consumption of gold, there is a growing need and effort to extract gold from alternative sources besides conventional mining, e.g., from water. This drive is mainly due to the potential benefits for the economy and the environment as these sources contain large quantities of the precious metal that can be utilized. Wastewater is one of these valuable sources in which the gold concentration can be in the ppb range. However, the effective selective recovery and recycling of ultratrace amounts of this metal remain a challenge. In this article, we describe the development of a covalent imine-based organic framework with pores containing thioanisole functional groups (TTASDFPs) formed by the condensation of a triazine-based triamine and an aromatic dialdehyde. The sulfur-functionalized pores served as effective chelating agents to bind Au3+ ions, as evidenced by the uptake of more than 99% of the 9 ppm Au3+ solution within 2 min. This is relatively fast kinetics compared with other adsorbents reported for gold adsorption. TTASDFP also showed a high removal capacity of 245 mg·g–1 and a clear selectivity toward gold ions. More importantly, the material can capture gold at concentrations as low as 1 ppb.

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“…Advantages and disadvantages of heap leaching are well known and that technology widely used for gold and other metals extraction. [1][2][3][4][5][6][7][8][9][10][11]. The heap leaching modern stage is bioleaching [12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Effect of Lime and Organic Binders on Clay Gold-Bearing Ores Filterability

Naumov

Lobanov

2018

SSP

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The present work relates to hydrometallurgy, in particular, to gold-bearing clay ores leaching processes. The initial and agglomerated material filterability was studied. Filterability varies in different agglomeration conditions. Influence of cement, lignosulfonate, plastizer (Cemmix CemPlast), lime consumption was investigated. The negative effect of organic reagents additives, such as plasticizer (Cemmix CemPlast) and lignosulfonate, on the filtration process was established. Colmatation of agglomerated ore minimizes at CaO and Ca (OH)2 using as a modifier of the system, also phase separation in the percolation regime and under pressure proceeds without difficulty. Lime and cement joint use in the optimum proportion at clay ore agglomeration under the studied conditions reduces the filtration duration from a few hours to 2-5 minutes.

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Recovery of Gold and Silver from Ores by Hydrometallurgical Processing

Cited by 15 publications

References 0 publications

Some Recent Developments in Hydrometallurgy

Some Recent Developments in Hydrometallurgy

Enhanced Removal of Ultratrace Levels of Gold from Wastewater Using Sulfur-Rich Covalent Organic Frameworks

Effect of Lime and Organic Binders on Clay Gold-Bearing Ores Filterability

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