Results 11 to 20 of about 17,615 (267)

REVIEW OF THE IRON RECOVERY PROCESSES FROM LADEN LEACH LIQUORS IN HYDROMETALLURGY [PDF]

open access: greenSustainable Extraction and Processing of Raw Materials Journal, 2020
. Iron is usually present in higher concentrations in the laden solutions and its removal and elimination to a stable phase is a severe problem in hydrometallurgy. This article analyses and compares the processes of solvent extraction and ion exchange as
Plamen Georgiev   +4 more
doaj   +2 more sources

A Method of Fault Monitoring and Diagnosis for the Thickener in Hydrometallurgy [PDF]

open access: goldIEEE Access, 2019
Hydrometallurgy is a metallurgical method for processing complex ores and low-grade ores while reducing environmental pollution. The density of the thickening process in hydrometallurgical production is rather poor, and there are many interference ...
Dong Xiao   +7 more
doaj   +2 more sources

Efficient Non-Invasive Rejuvenation of Spent Lithium Iron Phosphate Batteries Through Controlled Overdischarge. [PDF]

open access: yesAdv Mater
This strategy rejuvenates spent lithium iron phosphate battery by non‐invasively targeting Li+ trapped within the solid‐electrolyte interphase (SEI). This method mitigates copper dissolution and reduces Li/Fe antisite defects, achieving 9.56% capacity recovery and 214 cycles lifespan extension. The process requires only 3 MJ kg−1 of energy and emitting
Song J   +6 more
europepmc   +2 more sources

Application of Ion Exchange for Preparation of Selected Metal Perrhenates—Precursors for Superalloy Production

open access: yesMetals, 2019
Methods for the preparation of selected metal perrhenates and their mixtures are presented in this paper. These materials are suitable for reduction, and therefore for production of alloy powders containing rhenium and other superalloy components, i.e ...
Katarzyna Leszczyńska-Sejda   +4 more
doaj   +1 more source

Hydrometallurgical extraction of Al and Si from kaolinitic clays [PDF]

open access: yes, 2017
Herein is presented the results of a study on the hydrometallurgic extractionand recovery of aluminum and silicon by leaching of kaolinitic clays with HF. Thestudied extraction parameters were: temperature, reaction time, solid/liquid ratio,concentration,
Pinna, Eliana Guadalupe   +3 more
core   +3 more sources

Method of Preparation for High-Purity Nanocrystalline Anhydrous Cesium Perrhenate

open access: yesMetals, 2017
This paper is devoted to the preparation of high-purity anhydrous nanocrystalline cesium perrhenate, which is applied in catalyst preparation. It was found that anhydrous cesium perrhenate with a crystal size <45 nm can be obtained using cesium ion ...
Katarzyna Leszczyńska-Sejda   +4 more
doaj   +1 more source

Rhenium(VII) Compounds as Inorganic Precursors for the Synthesis of Organic Reaction Catalysts

open access: yesMolecules, 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]

open access: yesJournal 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

The optimal use of tris-2-ethylhexylamine to recover hydrochloric acid and metals from leach solutions and comparison with other extractants [PDF]

open access: yes, 2018
This document is the Accepted Manuscript version of the following article: Uchenna Kesieme, Andreas Chrysanthou, Maurizio Catulli, and Chu Yong Cheng, ‘The optimal use of tris-2-ethylhexylamine to recover hydrochloric acid and metals from leach solutions
Catulli, Maurizio   +3 more
core   +2 more sources

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