Gold extraction using alternatives to cyanide: Ultrasonic reinforcement and its leaching kinetics

Q Gui, L Fu, Y Hu, H Di, M Liang, S Wang, L Zhang - Minerals Engineering, 2023 - Elsevier
A novel eco-friendly synthetic gold lixiviant (Jinchan) was used to recover gold from gold
ores. Ultrasound was used to improve gold leaching efficiency and recovery percentage …

Extraction of gold from typical Carlin gold concentrate by pressure oxidation pretreatment-Sodium jarosite decomposition and polysulfide leaching

L Zhang, X Guo, Q Tian, S Zhong, H Qin - Hydrometallurgy, 2022 - Elsevier
Most of the gold is encapsulated in sulfides and arsenopyrite in Carlin type gold concentrate;
the gold leaching efficiency is less than 8% without pretreatment. Cyanide process is a …

[HTML][HTML] Flowsheet design and environmental impacts of cobalt co-product recovery from complex Au-Co ores

M Rinne, H Elomaa, M Lundström - Minerals Engineering, 2023 - Elsevier
The increasing demand for battery metals, such as cobalt, increases the attractiveness of
conventionally overlooked raw materials, such as small multi-metal deposits. With the length …

Cyclic degradation of thiocyanate in cyanide barren solution by manganese oxides

X Wang, B Li, J Chen, S Cui, K Liu, Q Han - Minerals Engineering, 2022 - Elsevier
This study describes the degradation of thiocyanate by manganese oxides. With NaOH and
CaO as precipitating agents, two manganese oxides, ie MnO x/Na and MnO x/Ca, were …

Non-cyanide Extraction of Gold from Carlin-Type Gold Concentrate by Pressure Oxidation Pretreatment–Jarosite Decomposition–Fine Grinding: An Eco-Friendly …

L Zhang, X Guo, Q Tian, S Zhong, D Li, H Qin… - Journal of Sustainable …, 2022 - Springer
Of late, given the difficulties in gold extraction and severe environmental pollution emanating
from cyanide extraction of Carlin-type gold concentrate (CTGC), a novel pressure oxidation …

Oxidation behaviour and bio-oxidation of gold-bearing sulphide ores: Oxygen capabilities and challenges

AK Saim, G Ofori-Sarpong, RK Amankwah - Ghana Mining Journal, 2022 - ajol.info
The paper presents an overview of bio-oxidation of sulphidic refractory gold ores prior to
gold cyanidation. This review discusses several factors, more importantly, oxygen …

Lead Oxide Enhances the Leaching of Gold in Cyanide Tailings

W Yang, H Dong, H Cao, T Long, S Deng, H Wan - JOM, 2023 - Springer
Cyanidation tailings often contain a certain amount of gold, which is difficult to recover due to
the influence of associated minerals. In this article, lead oxide was used to increase leaching …

Application of green lixiviants in metal extraction from primary and secondary metal resources

J Wu - 2021 - search.proquest.com
At present, metals are produced from both primary and secondary resources. In this
dissertation, gold extraction from pressure oxidation (POX) residues of copper sulfide …

Lixiviación de plata a partir de jarosita con agentes alternativos al cianuro

BR González-Bonilla, GI Dávila-Pulido… - 2024 - repositorioinstitucional.uaslp.mx
Las jarositas son residuos sólidos generados durante la etapa de purificación en el proceso
hidrometalúrgico para la obtención de zinc. Su reutilización es de gran interés porque …