Results 21 to 30 of about 11,365 (265)

Intensification Behavior of Mercury Ions on Gold Cyanide Leaching

Metals, 2018
Cyanidation is the main method used to extract gold from gold raw materials; however, a serious problem with this method is the low leaching rate. In order to improve gold leaching, the intensification behavior of mercury ions on gold cyanide leaching ...
Qiang Zhong, Yongbin Yang, Lijuan Chen, Qian Li, Bin Xu, Tao Jiang   +5 more
doaj   +1 more source

Study of the Effect of Dissolved Oxygen Concentration on Gold Recovery Leaching at PT Indo Muro Kencana

Equilibrium, 2023
Gold is a very important metal in human life. Most gold is processed using the sodium cyanide (NaCN) leaching method. Maximizing the leaching recovery can be done by optimizing the leaching process parameters, one of which varies the concentration of ...
Frideni Yushandiana Putri GF, Wilson Pauru', Sulaeman .   +2 more
doaj   +1 more source

Thiosulphate leaching for gold hydrometallurgy

Hydrometallurgy, 1995
Thiosulphate leaching of precious metals has been developed as an alternative and non-toxic technique to the conventional cyanidation. This process has advantages over cyanide in a decreased interference from foreign cations and a lower environmental impact.
Abbruzzese C, Fornari P, Massidda R, VEGLIO', FRANCESCO, Ubaldini S.   +4 more
openaire   +2 more sources

Study of an Environmentally Friendly Method for the Dissolution of Precious Metal with Ionic Liquid and Iodoalkane

Metals, 2021
Gold as a precious metal resource has high recycling significance. However, the current extraction methods cannot achieve the both efficiency and environmental friendliness.
Feng Feng, Jiamei Liu, Mingxing Zhao, Lu Yu, Haixin Wang, Chunshan Lu, Qunfeng Zhang, Jia Zhao, Yanxia Sun, Jie Cen, Xiaonian Li   +10 more
doaj   +1 more source

Study on the Effect of Cyanide Concentration on Gold Leaching Recovery in Ore at PT Indo Muro Kencana

Equilibrium, 2023
. Indonesia is a country that has abundant natural resources, including non-renewable natural resources such as various types of metals, natural gas, petroleum and others.
Frideni Yushandiana Putri GF, Armitha Lisanul Karimah, Sulaeman .   +2 more
doaj   +1 more source

The comparison of gold extraction methods from the rock using thiourea and thiosulfate

Open Chemistry, 2023
Gold extraction from the rock is generally carried out using mercury. However, the high toxicity of mercury has a very dangerous impact on the environment and health.
Yanti Ika, Marliana Thia, Anugrahwati Mai, Wicaksono Wiyogo Prio, Winata Wahyu Fajar   +4 more
doaj   +1 more source

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

Advanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin, Marvin Erck, Kevin Jasutyn, Katja Radermacher, Andreas Bund, Mario Kurniawan   +5 more
wiley   +1 more source

Intrabandgap States Engineering in Functionalized Nanodiamond to Generate Solvated Electrons for Photocatalysis Under Solar Illumination

Advanced Functional Materials, EarlyView.
The negative electron affinity of diamond allows to emit highly reductive electrons. By introducing intra‐bandgap states and an optimized electron transfer mechanism by surface functionalization with Ru(bpy)3, the formation of solvated electrons is achieved upon solar irradiation.
Benjamin Kiendl, Arsène Chemin, Adam H. Day, Rocio B. Rodriguez, Sneha Choudhury, Franziska Buchner, Kaan Atak, Christoph Merschjann, Emina Hadzifejzovic, Tim D. W. Claridge, Karin Larsson, Amélie Venerosy, Mailis M. Lounasvuori, Natalia Zabarska, Boyan Iliev, Thomas J. S. Schubert, Hugues A. Girard, Jean‐Charles Arnault, John S. Foord, Tristan Petit, Anke Krueger   +20 more
wiley   +1 more source

Technology for Aiding the Cyanide Leaching of Gold Ores

Separations
Cyanide leaching technology was studied for low-grade oxidized gold ores in Guangxi Province. The gold grade of the raw ores was 1.32 g/t. The gold leaching rate was 90.91% under the optimal conditions for the following conventional leaching process ...
Jiahong Han, Shujuan Dai, Jiushuai Deng, Shandong Que, Yugao Zhou   +4 more
doaj   +1 more source

Electrochemical analysis of copper-EDTA-ammonia-gold thiosulfate dissolution system

Green Processing and Synthesis, 2023
Ethylenediaminetetraacetic acid disodium (EDTA) can form stable complexes with many metals. To improve the leaching rate of gold and the consumption rate of thiosulfate, EDTA and ammonia were combined with copper ions to form a copper-EDTA-ammonia ...
Xiang Peng-Zhi, Ye Guo-Hua
doaj   +1 more source