Distillation of LiCl from the LiCl–Li2O molten salt of the electrolytic reduction process

In this study, the corrosion behavior of new Ni-based structural materials was studied for electrolytic reduction after exposure to LiCl-Li2O molten salt at 650°C for 24-216h under an oxidizing atmosphere. The new alloys with Ni, Cr, Al, Si, and Nb as the major components were melted at 1700°C under inert atmosphere. The corrosion products and fine structures of the corroded specimens were characterized by SEM, EDS, and XRD. The corrosion rate of 12wt% Cr-2wt% Si alloys and 12wt% Cr-5wt% Si alloys are below 0.3mm/year. However, the corrosion rate of 20wt% Cr-5wt% Si is 0.6mm/year. Also, the corrosion products of 12wt% Cr alloys were Cr2O3, NiCr2O4, Ni, and NiO; those of 20wt% Cr alloys were Cr2O3, LiAl2Cr3O8, and NiO. The higher corrosion rate of 20wt% Cr-5wt% Si could be the higher solute concentration which leads to an unstable alloy formation. As confirmed by the pseudo binary phase diagram of (Ni-Cr-Al-Nb)-Si, the solubility of the silicon with 20 wt% of Cr decreased to 4 wt% from 5 wt% with 12 wt% of Cr.

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Low-Temperature Synthesis of VB2 Nanopowders by a Molten-Salt-Assisted Borothermal Reduction Process

Metallurgical and Materials Transactions B ◽

10.1007/s11663-019-01620-1 ◽

2019 ◽

Vol 50 (4) ◽

pp. 1696-1703

Author(s):

Yue-Dong Wu ◽

Guo-Hua Zhang ◽

Yu Wang ◽

Rui Xu

Keyword(s):

Low Temperature ◽

Molten Salt ◽

Reduction Process ◽

Low Temperature Synthesis ◽

Temperature Synthesis ◽

Borothermal Reduction

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Electro-reduction of hematite using water as the redox mediator

Green Chemistry ◽

10.1039/c8gc02756k ◽

2019 ◽

Vol 21 (2) ◽

pp. 198-204 ◽

Cited By ~ 8

Author(s):

Kaiyu Xie ◽

Ali Reza Kamali

Keyword(s):

Molten Salt ◽

Large Scale ◽

Cost Effective ◽

Redox Mediator ◽

Electrolytic Reduction ◽

Scale Production ◽

Large Scale Production ◽

Cost Effective Approach

Molten salt electrolytic reduction of Fe2O3 in the presence of water is proposed as a sustainable and cost-effective approach for large-scale production of iron.

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Production of Fine Tungsten Powder by Electrolytic Reduction of Solid CaWO4in Molten Salt

Journal of The Electrochemical Society ◽

10.1149/2.113206jes ◽

2012 ◽

Vol 159 (6) ◽

pp. E139-E143 ◽

Cited By ~ 14

Author(s):

Dingding Tang ◽

Wei Xiao ◽

Huayi Yin ◽

Longfei Tian ◽

Dihua Wang

Keyword(s):

Molten Salt ◽

Tungsten Powder ◽

Electrolytic Reduction ◽

Fine Tungsten

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Fabrication of UO2Porous Pellets on a Scale of 30 kg-U/Batch at the PRIDE Facility

Advances in Materials Science and Engineering ◽

10.1155/2015/376173 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 8

Author(s):

Sang-Chae Jeon ◽

Jae-Won Lee ◽

Ju-Ho Lee ◽

Sang-Jun Kang ◽

Kwang-Yun Lee ◽

...

Keyword(s):

Sintered Density ◽

Compaction Pressure ◽

Practical Interest ◽

Reduction Process ◽

Processing Parameters ◽

Electrolytic Reduction ◽

Batch Size ◽

Energy Research ◽

Feed Material ◽

Parameters Analysis

In the pyroprocess integrated inactive demonstration (PRIDE) facility at the Korea Atomic Energy Research Institute (KAERI), UO2porous pellets were fabricated as a feed material for electrolytic reduction on an engineering scale of 30 kg-U/batch. To increase the batch size, we designed and modified the corresponding equipment for unit processes based on ceramic processing. In the course of pellet fabrication, the correlation between the green density and sintered density was investigated within a compaction pressure range of 106–206 MPa, in terms of the optimization of processing parameters. Analysis of the microstructures of the produced UO2porous pellets suggested that the pellets were suitable for feed material in the subsequent electrolytic reduction process in pyroprocessing. This research puts forth modifications to the process and equipment to allow the safe mass production of UO2porous pellets; we believe these results will have immense practical interest.

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