http://www.koreascience.or.kr:80/article/JAKO201127250029099.pdf

Pyroprocessing technology development at kaeri

http://koreascience.or.kr:80/article/JAKO201021452661426.pdf

Status of pyroprocessing technology development in KOREA

Pyroprocessing technology has been actively developed at Korea Atomic Energy Research Institute (KAERI) to meet the necessity of addressing spent fuel management issue. This technology has advantages over aqueous process such as less proliferation risk, treatment of spent fuel with relatively high heat and radioactivity, and compact equipments. This paper describes the pyroprocessing technology development at KAERI from head-end process to waste treatment. The unit process with various scales has been tested to produce the design data associated with scale-up. Pyroprocess integrated inactive demonstration facility (PRIDE) was constructed at KAERI and it began test operation in 2012. The purpose of PRIDE is to test the process regarding unit process performance, remote operation of equipments, integration of unit processes, scale-up of process, process monitoring, argon environment system operation, and safeguards-related activities. The test of PRIDE will be promising for further pyroprocessing technology development.

/pdf/current-status-of-pyroprocessing-development-at-kaeri-18vk39g7ps.pdf

Current Status of Pyroprocessing Development at KAERI

First-principles molecular dynamics modeling of the LiCl–KCl molten salt system

In this paper, we developed an efficient and environment-friendly approach, the molten-salt-electrolysis (MSE), to recover lithium and cobalt from spent LiCoO2-based lithium-ion batteries (LIBs). U...

A Green Electrochemical Process to Recover Co and Li from Spent LiCoO2-Based Batteries in Molten Salts

A lab-scale lanthanide precipitation apparatus, which has a 4 kg/batch size, was installed and tested. By using this lab-scale apparatus, cooxidative precipitation experiments of lanthanides were carried out. As lanthanides, 8 rare-earth elements (Y, La, Ce, Pr, Nd, Sm, Eu, and Gd) were used. By a reaction with oxygen, La, Pr, Nd, Sm, Eu, and Gd were converted to their oxychloride form (REOCl) and Ce, Pr, and Y to their oxide form (REO2, RE2O3). Since these lanthanide oxides or oxychlorides are nearly insoluble to eutectic salt, they were all precipitated by a free settling at the bottom, where about 7 h of precipitation time was required. It was found that under the conditions of 750°C salt temperature, a 12 h sparging time, and 5 L/min oxygen sparging rate, all the used rare-earth elements showed over 99% oxidation efficiency. However, in the case of 800°C temperature, they show over 99% conversion efficiencyonly after 6 h.

https://www.tandfonline.com/doi/pdf/10.1080/18811248.2009.9711610

Minimization of Eutectic Salt Waste from Pyroprocessing by Oxidative Precipitation of Lanthanides

The molten salt waste from the pyroprocess is one of the problematic wastes to directly apply a conventional process such as vitrification or ceramization. This study suggested a novel method using...

Stabilization/Solidification of Radioactive Salt Waste by Using xSiO2−yAl2O3−zP2O5 (SAP) Material at Molten Salt State

In the radioactive waste management, metal chloride wastes from a pyrochemical process is one of problematic wastes not directly applicable to a conventional solidification process. Different from ...

In-Tae Kim

Papers

Current Status of Pyroprocessing Development at KAERI

Minimization of Eutectic Salt Waste from Pyroprocessing by Oxidative Precipitation of Lanthanides

Stabilization/Solidification of Radioactive Salt Waste by Using xSiO2−yAl2O3−zP2O5 (SAP) Material at Molten Salt State

Characteristics of wasteform composing of phosphate and silicate to immobilize radioactive waste salts.

Treatment of a waste salt delivered from an electrorefining process by an oxidative precipitation of the rare earth elements