Results 41 to 50 of about 405,346 (229)
Chemical Engineering Transactions, 2022 This paper presents a new approach to planning experiments for hydrometallurgical processing of gold from waste printed circuit boards of cell phones by aqueous thiourea solution with and without ultrasound exposure. It is established that the use of the
Zhanserik Shoshay +5 more
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Journal of the Electrochemical SocietyAcidic thiourea leaching is a promising cyanide-free approach for silver recovery, yet the electrochemical dissolution mechanism and associated passivation processes remain insufficiently understood.
Can Li +3 more
semanticscholar +1 more source
Research of biochemical gold recovery method using high-arsenic raw materials
Metalurgija, 2021 This article contains the results of experiments to recover gold from complex mineral raw materials containing more than 15 % arsenic. Laboratory tests showed that standard cyanidation recovers only 26,4 % of gold into the solution.
A. K. Koizhanova +6 more
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Influence of mechanical activation on the leaching of non-ferrous metals from a CuPbZn complex concentrate [PDF]
Acta Montanistica Slovaca, 2000 The aim of study was to research the procedures of copper, lead and zinc leaching from CuPbZn complex sulphide concentrate during the intervention of mechanical activation.Mechanical activation belongs to innovative procedures, which intensifies ...
Godoèíková Erika, Ficeriová Jana
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Studies on thiourea leaching of finely-divided gold ores [PDF]
, 1981 Thesis Number: 1550.Online access for this thesis was created in part with support from the Institute of Museum and Library Services (IMLS) administered by the Nevada State Library, Archives and Public Records through the Library Services and Technology ...
Pyper, Randall
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Effect of Thiourea on Lead Release from Lead-Bearing Jarosite under Freeze–Thaw Cycling
Metals, 2023 Lead is a toxic factor in jarosite residue, and it is important to study its release behavior from simulated lead jarosite residue (LSJ) to predict the stability of the jarosite residue and its impact on the environment.
Jun Peng +5 more
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Optimization of recovering cerium from the waste polishing powder using response surface methodology
Green Processing and Synthesis, 2017 Recovery of rare earth from the waste rare earth polishing powder is of great importance to improve the process economics. The current recovery methods result in the generation of large quantities of polluted discharge necessitating waste treatment ...
Lu Shuaidan +5 more
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Recovery of Rare Earths from Polishing Waste
Kuangchan zonghe liyong, 2023 This is an essay in the field of metallurgical engineering. Using rare earth polishing powder waste as raw material, an orthogonal experimental design was used to convert rare earth oxides into sulfates by first conducting roasting experiments of the ...
Yu Zhang
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From Materials to Systems: Challenges and Solutions for Fast‐Charge/Discharge Na‐Ion Batteries
Advanced Energy Materials, EarlyView.This review systematically analyzes the key characteristics limiting the fast‐charge/discharge capability of Na‐ion batteries (SIBs) from a multi‐scale perspective encompassing electrode materials, the electrode‐electrolyte interface, and the system. Furthermore, it presents practical solution strategies for the fundamental issues arising at each scale,
Bonyoung Ku +5 more
wiley +1 more source
Isomerism of Complexes Containing Thiourea Dianion Ligands [PDF]
, 2014 This thesis reports the synthesis and characterisation of eight new platinum thiourea complexes. Thiourea dianion complexes of the type (Ph₃P)₂PtSC(=NR)NPh, R=Me, Et, Prⁿ, Prⁱ, Buⁿ and (Ph₃P)₂PtSC(=NPh)NR R=Buͭ , p-tol, and the thiourea monoanion complex
Spenceley, Jane Estelle
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