Results 121 to 130 of about 1,040,720 (337)
Iranian Journal of Materials Science and Engineering, 2014 In this paper, gold leaching of a refractory sulfide concentrate by chloride–hypochlorite solution was investigated and effects of stirring speed, temperature and particle size on the leaching rate were reported.
M. Ghobeiti Hasab +2 more
doaj
Carbon Energy, EarlyView.In this review, a unified framework of the Sabatier principle is applied to a diverse range of catalytic and electrocatalytic systems for advanced clean energy technologies, with a particular focus on the oxygen reduction reaction (ORR). This approach will guide the design and development of highly active and stable catalysts for fuel cells ...
Wanying Zhang +6 more
wiley +1 more source
Kuangchan zonghe liyongThe present study focuses on the comprehensive utilization of resources, specifically examining a laterite oxidized gold deposit located in western Yunnan Province.
Minghui GONG +3 more
doaj +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Crystallization is the final stage in lithium hydroxide monohydrate (LiOH · H2O) production, and antisolvent crystallization offers a lower‐energy route compared with evaporative methods. In this study, we investigated bench‐scale ethanol‐based antisolvent crystallization of LiOH · H2O, and identified the significant impact parameter via a ...
Chentao He, Liuyin Xia
wiley +1 more source
Thiourea-thiocyanate leaching system for gold [PDF]
, 2010 manuscriptThe leaching of gold in thiourea-thiocyanate solutions has been studied by the rotating-disk technique using ferric sulfate as oxidant. The effects of initial concentrations of ferric, thiourea (Tu) and thiocyanate as well as temperature and pH
Yang, Xiyun; Moats, Michael S.; Wang, Xuming; Shi, Xichang; Xu, Hui +1 more
core
Mechanical-chemical activation using solutions containing active oxygen species
E3S Web of Conferences, 2018 The experimental studies of gold leaching from the cyanidation cakes for one of the Far East region deposits is shown in the article. Carbonate-cyanide and hypochlorite-chloride reagents were used for leaching and were electro-photo activated before ...
Aleksandrov Aleksandr +4 more
doaj +1 more source
Ion‐Enriched Porous Organic Polymer for Gold Recovery From E‐Waste
EcoEnergy, EarlyView.A novel ion‐enriched porous organic polymer was designed and synthesized. It exhibits ultrahigh gold adsorption efficiency with capacity up to 1530.9 mg g−1, and also shows selective capture ability towards gold ions in the actual CPU leaching solution, demonstrating its promising potential for gold recovery from actual e‐waste.
Rui Zhang +8 more
wiley +1 more source
Effect of (NH4)2SO4 on Extraction of Beryllium from Low-Grade Uranium Polymetallic Ore
MiningA low-grade uranium-gold polymetallic ore is associated with many rare elements, such as beryllium (Be), zirconium (Zr), thorium (Th), and cerium (Ce). It has potential development and utilization value.
Xiujuan Feng, Qianjin Niu
doaj +1 more source
Comparative Analysis of Metal Preloading Technologies in Batteries and Capacitors
EcoEnergy, EarlyView.Metal preloading strategies play an important role in efficient batteries and hybrid capacitors to compensate for the consumed metals at the first discharge. This article reviews recent progress in preloading technologies in lithium‐ion and other metal‐ion systems.
Xuexue Pan +3 more
wiley +1 more source
EcoEnergy, EarlyView.An overview of grain boundary engineering in the field of electrocatalysis. ABSTRACT Key electrocatalytic reactions such as HER, OER, ORR, CO2RR, and NRR offer promising routes for storing renewable energy as chemical fuels. However, their widespread application is constrained due to the lack of highly active and stable catalysts. Grain boundaries (GBs)
Jingyu Gao +8 more
wiley +1 more source