scholarly journals Effects of Simulated Rare Earth Recycling Wastewaters on Biological Nitrification

2015 ◽  
Vol 49 (16) ◽  
pp. 9460-9468 ◽  
Author(s):  
Yoshiko Fujita ◽  
Joni Barnes ◽  
Ali Eslamimanesh ◽  
Malgorzata M. Lencka ◽  
Andrzej Anderko ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Recycling ◽  
Biological Nitrification

scholarly journals Rare-earth recycling using a functionalized ionic liquid for the selective dissolution and revalorization of Y2O3:Eu3+ from lamp phosphor waste

2015 ◽  
Vol 17 (2) ◽  
pp. 856-868 ◽  
Author(s):  
David Dupont ◽  
Koen Binnemans
Keyword(s):  
Ionic Liquid ◽  
Rare Earth ◽  
Selective Dissolution ◽  
Recycling Process ◽  
Functionalized Ionic Liquid ◽  
Rare Earth Recycling ◽  
Lamp Phosphor

A recycling process for lamp phosphor waste has been developed based on the selective dissolution and revalorization of the valuable red lamp phosphor Y2O3:Eu3+ in the functionalized ionic liquid [Hbet][Tf2N].

Rare Earth Recycling from NdFeB

2016 ◽  
pp. 1-14 ◽  
Author(s):  
Zhongsheng Hua
Keyword(s):  
Rare Earth ◽  
Rare Earth Recycling

Rare-earth recycling needs market intervention

2021 ◽  
Author(s):  
Koen Binnemans ◽  
Paul McGuiness ◽  
Peter Tom Jones
Keyword(s):  
Rare Earth ◽  
Market Intervention ◽  
Rare Earth Recycling

Rhodia tries its hand at rare earth recycling

2011 ◽  
Vol 2011 (12) ◽  
pp. 4
Keyword(s):  
Rare Earth ◽  
Rare Earth Recycling

scholarly journals Innovative Coupled Hydrometallurgical and Pyrochemical Processes for Rare Earth Recycling

2018 ◽  
pp. 2647-2658
Author(s):  
V. Blet ◽  
E. Andreiadis ◽  
J. Serp ◽  
M. Miguirditchian
Keyword(s):  
Rare Earth ◽  
Rare Earth Recycling

scholarly journals Rare Earth Recycling: Forecast of Recoverable Nd from Shredder Scrap and Influence of Recycling Rates on Price Volatility

2015 ◽  
Vol 1 (3) ◽  
pp. 179-188 ◽  
Author(s):  
H. M. Dhammika Bandara ◽  
Mark A. Mantell ◽  
Julia W. Darcy ◽  
Marion H. Emmert
Keyword(s):  
Rare Earth ◽  
Price Volatility ◽  
Rare Earth Recycling

Characterization of Rare-Earth Fluoride Anti-Stokes Phosphors by Scanning arid Transmission Electron Microscopy

1971 ◽  
Vol 29 ◽  
pp. 142-143
Author(s):  
N. M. P. Low ◽  
L. E. Brosselard
Keyword(s):  
Electron Microscopy ◽  
Rare Earth ◽  
Elevated Temperatures ◽  
Stoichiometric Composition ◽  
Rare Earth Ions ◽  
Crystalline Solid ◽  
Precipitation Process ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Rare Earth Fluorides

There has been considerable interest over the past several years in materials capable of converting infrared radiation to visible light by means of sequential excitation in two or more steps. Several rare-earth trifluorides (LaF3, YF3, GdF3, and LuF3) containing a small amount of other trivalent rare-earth ions (Yb3+ and Er3+, or Ho3+, or Tm3+) have been found to exhibit such phenomenon. The methods of preparation of these rare-earth fluorides in the crystalline solid form generally involve a co-precipitation process and a subsequent solid state reaction at elevated temperatures. This investigation was undertaken to examine the morphological features of both the precipitated and the thermally treated fluoride powders by both transmission and scanning electron microscopy.Rare-earth oxides of stoichiometric composition were dissolved in nitric acid and the mixed rare-earth fluoride was then coprecipitated out as fine granules by the addition of excess hydrofluoric acid. The precipitated rare-earth fluorides were washed with water, separated from the aqueous solution, and oven-dried.

Study of segregation in La1.8Sr0.2CuO4 superconductor by STEM-EDS microanalysis

1987 ◽  
Vol 45 ◽  
pp. 54-55
Author(s):  
T. F. Kelly ◽  
P. J. Lee ◽  
E. E. Hellstrom ◽  
D. C. Larbalestier
Keyword(s):  
Rare Earth ◽  
High Field ◽  
Transport Current ◽  
Total Thickness ◽  
New Class ◽  
Ceramic Superconductors ◽  
Current Densities ◽  
Group Ii ◽  
Eds Microanalysis

Recently there has been much excitement over a new class of high Tc (>30 K) ceramic superconductors of the form A1-xBxCuO4-x, where A is a rare earth and B is from Group II. Unfortunately these materials have only been able to support small transport current densities 1-10 A/cm2. It is very desirable to increase these values by 2 to 3 orders of magnitude for useful high field applications. The reason for these small transport currents is as yet unknown. Evidence has, however, been presented for superconducting clusters on a 50-100 nm scale and on a 1-3 μm scale. We therefore planned a detailed TEM and STEM microanalysis study in order to see whether any evidence for the clusters could be seen.A La1.8Sr0.2Cu04 pellet was cut into 1 mm thick slices from which 3 mm discs were cut. The discs were subsequently mechanically ground to 100 μm total thickness and dimpled to 20 μm thickness at the center.

Microstructural characterization of a cast RENi5-based alloy

1993 ◽  
Vol 51 ◽  
pp. 1176-1177
Author(s):  
G. M. Micha ◽  
L. Zhang
Keyword(s):  
Electron Microscopy ◽  
Rare Earth ◽  
Microstructural Characterization ◽  
Binary Compound ◽  
Nickel Metal ◽  
Cast Material ◽  
Nickel Metal Hydride ◽  
Transmission Electron ◽  
Cast Condition

RENi5 (RE: rare earth) based alloys have been extensively evaluated for use as an electrode material for nickel-metal hydride batteries. A variety of alloys have been developed from the prototype intermetallic compound LaNi5. The use of mischmetal as a source of rare earth combined with transition metal and Al substitutions for Ni has caused the evolution of the alloy from a binary compound to one containing eight or more elements. This study evaluated the microstructural features of a complex commercial RENi5 based alloy using scanning and transmission electron microscopy.The alloy was evaluated in the as-cast condition. Its chemistry in at. pct. determined by bulk techniques was 12.1 La, 3.2 Ce, 1.5 Pr, 4.9 Nd, 50.2 Ni, 10.4 Co, 5.3 Mn and 2.0 Al. The as-cast material was of low strength, very brittle and contained a multitude of internal cracks. TEM foils could only be prepared by first embedding pieces of the alloy in epoxy.

Rare Earth Production

1952 ◽  
Vol 44 (3) ◽  
pp. 442-442
Author(s):  
Frank Spedding ◽  
Harley Wilhelm ◽  
Wayne Keller et al
Keyword(s):  
Rare Earth
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