Recovery of rare earths from waste cathode ray tube (CRT) phosphor powder by selective sulfation roasting and water leaching

@article{nal2019RecoveryOR,
  title={Recovery of rare earths from waste cathode ray tube (CRT) phosphor powder by selective sulfation roasting and water leaching},
  author={Mehmet Ali Recai {\"O}nal and Koen Binnemans},
  journal={Hydrometallurgy},
  year={2019}
}
Abstract Until recently, most displays, such as television and computer screens, were based on cathode ray tubes (CRTs). With the introduction of new types of displays including liquid crystal displays, CRTs have been widely replaced, leading to a gradual build-up of hazardous CRT powder waste. In this paper, a new approach is introduced where the valuable rare-earth elements (REEs) (i.e. yttrium and europium) in the powder are selectively recovered, leaving behind a zinc-rich residue and glass… 
19 Citations
Recovery of rare earths from waste cathode ray tube (CRT) phosphor powder with organic and inorganic ligands.
TLDR
Among the complexing agents tested, the pyrophosphate ion was found to be the most advantageous for the extraction of REEs from CRTs, as an alternative to the traditional methods that use highly acidic solutions (pH < 1) and elevated temperatures.
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Abstract Yttrium (Y) and europium (Eu) are critical rare earth elements (REEs) due to their high supply risk and importance for clean energy technologies. Their presence in electronic waste (e-waste)
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The purpose of the work is to investigate the existence and the possibility of recovering economically interesting elements, such as precious metals and rare earth elements, from phosphor layers of
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Abstract To solve the problem of rare earths (RE) lithium (Li) and fluorine (F) recovery in rare earth molten salt electrolysis slag, a recovery method was developed based on magnetic separation,
Separation of rare earth elements from the leaching solution of waste phosphors by solvent extraction with Cyanex 272 and its mixture with Alamine 336
Waste phosphors contain rare earth elements (REEs) such as yttrium (Y), europium (Eu), cerium (Ce), terbium (Tb) and lanthanum (La). Separation of these REEs from the leaching solution of waste
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Abstract A novel processing route of microwave-assisted acid baking followed by water leaching of waste phosphor retrieved from end-of-life fluorescent lamps is investigated. The waste phosphor
Alkali baking and solvometallurgical leaching of NdFeB magnets
Abstract End-of-life NdFeB magnets are an important secondary source of rare-earth elements (REEs) and cobalt. Recycling of these magnets can also mitigate the supply problems of its constituent
Facile method for the selective recovery of Gd and Pr from LCD screen wastes using ultrasound-assisted leaching
Rare earth elements (REE) are essential for the production of technological devices. However, their high demand and low availability, together with an increase in electronic waste generation, compel
Thermodynamics and Kinetics of Sulfuric Acid Leaching Transformation of Rare Earth Fluoride Molten Salt Electrolysis Slag
TLDR
Weak magnetic iron separation, sulfuric acid leaching transformation, water leaching, hydrogen fluoride water absorption, and cycle precipitation of rare earth are used to recover rare earth from their fluoride molten salt electrolytic slag, wherein the thermodynamic and kinetic processes of sulfuric Acid Leaching transformation are emphatically studied.
Characterization and recycling potential of the discarded cathode ray tube monitors
Abstract Abundantly available discarded cathode ray tubes are a serious threat to the environment and loss to resource conservation and therefore requiring immediate recycling efforts. In this study,
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