Results 31 to 40 of about 18,900 (300)

Image1_Utilization of amino acid for selective leaching of critical metals from spent hydrodesulfurization catalyst.tif [PDF]

open access: yes, 2022
While spent catalysts can cause serious environmental pollution, they can be considered an essential secondary metal source due to their high critical metal grades.
Sae Yamamoto (13931493)   +3 more
core   +1 more source

Selective leaching of Mo from an off-grade gravity lead concentrate in Na2CO3 solution [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2019
The selective leaching of Mo from an off-grade gravity lead concentrate was investigated in Na2CO3 solution using air as an oxidant. The leaching behaviors of Mo and Pb were predicted by the thermodynamic phase diagrams of Pb-Mo-C-H2O system.
Liu Z.-X.   +4 more
doaj   +1 more source

Image4_Utilization of amino acid for selective leaching of critical metals from spent hydrodesulfurization catalyst.tif [PDF]

open access: yes, 2022
While spent catalysts can cause serious environmental pollution, they can be considered an essential secondary metal source due to their high critical metal grades.
Sae Yamamoto (13931493)   +3 more
core   +1 more source

Image2_Utilization of amino acid for selective leaching of critical metals from spent hydrodesulfurization catalyst.tif [PDF]

open access: yes, 2022
While spent catalysts can cause serious environmental pollution, they can be considered an essential secondary metal source due to their high critical metal grades.
Sae Yamamoto (13931493)   +3 more
core   +1 more source

Selective leaching of scandium and yttrium from red mud induced by hydrothermal treatment [PDF]

open access: yes, 2021
Summarization: BACKGROUND The red mud (bauxite residue) is a rare earth element (REE) bearing material that should be considered a valuable resource.
Veksha Andrei   +6 more
core   +1 more source

Inorganic-organic hybrids originating from organosilane anchored onto leached vermiculite [PDF]

open access: yesMaterials Research, 2013
The reactivity of clay minerals leached in grafting reactions was investigated. Precursor solids were prepared by treating the sodium vermiculites with nitric acid solutions at several concentrations.
Ana P. M. Alves   +2 more
doaj   +3 more sources

Investigation of the use of ammonium acetate as an alternative lixiviant in the leaching of malachite ore [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2013
The solutions containing ammonia allow for selective leaching of the copper from a copper ore. In this study, the leaching and kinetics of malachite ore were examined using ammonium acetate solutions as an alternative lixiviant.
Künkül Asım   +2 more
doaj   +1 more source

Direct Phosphoric Acid Leaching of Bauxite Residue for Selective Scandium Extraction

open access: yesMetals, 2022
Bauxite residue, the high alkaline and fine-grained byproduct of Bayer process for alumina’s production, is a material rich in numerous minerals and elements of high value and techno-economical interest in high tech applications such as rare earths ...
Lamprini-Areti Tsakanika   +5 more
doaj   +1 more source

Selective reductive leaching of an oxidised cobalt hydroxide containing residue [PDF]

open access: yes, 2013
Nickel was selectively leached from an industrial nickel-cobalt Mixed Hydroxide Precipitate (MHP) under mildly acidic, strongly oxidizing conditions. The resulting cobalt rich residues contained 14-21 wt.% Ni, 3-7 wt.% Co and 3-9 wt.% Mn.
Chong, Sebastian   +2 more
core   +1 more source

Selective Leaching of Arsenic from Copper Concentrates in Hypochlorite Medium [PDF]

open access: yes, 2023
The selective leaching of arsenic using sodium hypochlorite was evaluated in order to reduce its concentration in a copper concentrate. The best conditions achieved in the synthetic concentrate were applied to the industrial concentrate.
Antoni Roca   +4 more
core   +1 more source

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