Results 11 to 20 of about 4,150 (196)
, 2014 A novel process for leaching chromite ore has been proposed. Compared to the traditional alkaline roasting process, the new hydrometallurgical process lowers effectively the reaction temperature and enhances the leaching efficiency through pressure ...
Zhang, Yang +4 more
core +17 more sources
, 2005 The dissolution behavior of Nb2O5, Ta2O5 and their mixture in highly concentrated KOH solution (> 50% wt.) has been investigated. A 4(3) orthogonal design was used to study the effects of four leaching parameters, reaction temperature, KOHNb2O5, mole ...
Yi, DQ, Zhou, HM, Zhang, Y, Zheng, SL
core +9 more sources
, 2006 The bioleaching of high-magnesium Jinchuan nickel-bearing pyrrhotite using Acidithiobacilus ferrooxidans was investigated. The experimental results show that the bioleaching time can be reduced from 16 days to 10 days by sulphuric acid pretreatment of ...
Ke, Jiajun, Li, Hongmei
core +3 more sources
, 2007 In this work the effect of reaction temperature, sulfuric acid concentration, liquid-to-solid ratio and Fe2+ concentration on sulfuric acid leaching of gallium from phosphorus flue dust was studied.
Xu, Ke +3 more
core +1 more source
Rhenium(VII) Compounds as Inorganic Precursors for the Synthesis of Organic Reaction Catalysts
Molecules, 2019 Rhenium is an element that exhibits a broad range of oxidation states. Synthesis paths of selected rhenium compounds in its seventh oxidation state, which are common precursors for organic reaction catalysts, were presented in this paper.
Katarzyna Leszczyńska-Sejda +9 more
doaj +1 more source
Recovery of sodium from alumina-extracted fly ash using concentrated sodium carbonate solution [PDF]
Journal of Mining and Metallurgy. Section B: Metallurgy, 2018 A novel method for the recovery of sodium from alumina-extracted fly ash (AEFA) using concentrated Na2CO3 solution is presented. Sodium was efficiently extracted from AEFA, which was mainly composed of NaCaHSiO4.
Wang Z. +4 more
doaj +1 more source
Leaching of Metals from Spent Lithium-Ion Batteries
Recycling, 2017 The recycling of valuable metals from spent lithium-ion batteries (LIBs) is becoming increasingly important due to the depletion of natural resources and potential pollution from the spent batteries.
Miamari Aaltonen +3 more
doaj +1 more source
Advances in Mineral Processing and Hydrometallurgy
Metals, 2021 A Special Issue of Metals was commissioned that was devoted to aspects of Mineral Processing and Hydrometallurgy [...]
Corby G. Anderson, Hao Cui
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, 1992 In view of the environmental limitation imposed on cyanide disposal, there is general interest in developing non-toxic, safe substitutes for cyanide in the gold leaching process.
Li, B. +3 more
core +6 more sources
Metals, 2023 The exponential growth of electric and hybrid vehicles in the last five years forecasts a waste problem when their batteries achieve end-of-life. Li-ion batteries for vehicles have been assembled using materials from natural resources (as Li, Fe, Al, Cu ...
David da Silva Vasconcelos +3 more
doaj +1 more source