Patents by Inventor Kwang-Rag Kim

Kwang-Rag Kim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for recovery of residual actinide elements from chloride molten salt
    Patent number: 8506786
    Abstract: A method for recovery of residual actinide element from chloride molten salts that are formed after electro-refining and/or electro-winning of a spent nuclear fuel and include actinide elements and rare-earth elements is provided. The method comprises conducting electrolysis using a liquid cadmium cathode (LCC) in the chloride molten salt that is formed after electro-refining and/or electro-winning of a spent nuclear fuel and contains rare-earth elements and actinide elements; electro-depositing the actinide elements contained in the chloride molten salt on the LCC in order to reduce a concentration of the actinide elements; and adding a CdCl2 oxidant to the chloride molten salt containing the LCC-metal alloy in order to oxidize the rare-earth elements co-deposited on the LCC, thereby forming the rare-earth chlorides in the chloride molten salt.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: August 13, 2013
    Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.
    Inventors: Joon-Bo Shim, Do-Hee Ahn, Seung-Woo Paek, Si-Hyung Kim, Sang-Woon Kwon, Kwang-Rag Kim, Han-Soo Lee
  • Method for Recovery of Residual Actinide Elements from Chloride Molten Salt
    Publication number: 20110017601
    Abstract: A method for recovery of residual actinide element from chloride molten salts that are formed after electro-refining and/or electro-winning of a spent nuclear fuel and include actinide elements and rare-earth elements is provided. The method comprises conducting electrolysis using a liquid cadmium cathode (LCC) in the chloride molten salt that is formed after electro-refining and/or electro-winning of a spent nuclear fuel and contains rare-earth elements and actinide elements; electro-depositing the actinide elements contained in the chloride molten salt on the LCC in order to reduce a concentration of the actinide elements; and adding a CdCl2 oxidant to the chloride molten salt containing the LCC-metal alloy in order to oxidize the rare-earth elements co-deposited on the LCC, thereby forming the rare-earth chlorides in the chloride molten salt.
    Type: Application
    Filed: April 20, 2010
    Publication date: January 27, 2011
    Applicants: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KOREA HYDRO & NUCLEAR POWER CO., LTD.
    Inventors: Joon-Bo Shim, Do-Hee Ahn, Seung-Woo Paek, Si-Hyung Kim, Sang-Woon Kwon, Kwang-Rag Kim, Han-Soo Lee