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Development of Al-Based Metallic Glass Composites Containing Pb-Rich Crystalline 2<sup>nd</sup> Phase
결정질 Pb 제2상을 포함하는 Al 계 비정질 합금 개발
Wan Kim, Jinwoo Kim, Je In Lee, Eun Soo Park
김완, 김진우, 이제인, 박은수
Korean J. Met. Mater. 2020;58(2):77-86.   Published online 2020 Jan 8
DOI: https://doi.org/10.3365/KJMM.2020.58.2.77

Liquid immiscible alloy systems present a unique opportunity for designing composites with sphere-dispersed and/or interconnected microstructures. Herein, we demonstrate that the addition of Pb in Al84TM10RE6 (TM=Ni,Co,Fe,Ti, RE=La,Ce,Nd,Gd,Y) metallic glasses can result in liquid-liquid phase separation in a liquid immiscibility gap and substantially solidifies into a Pb-rich crystalline phase and..... More

                           Cited By 1
A Study on the Separation and Concentration of Li from Li-Containing Waste Solutions by Electrodialysis
리튬함유 폐액으로부터 전기투석에 의한 리튬의 분리·농축 연구
Jueun Lee, Hongil So, Yeonchul Cho, Inhwan Jang, Jaewoo Ahn, Jaeheon Lee
이주은, 소홍일, 조연철, 장인환, 안재우, 이재헌
Korean J. Met. Mater. 2019;57(10):656-662.   Published online 2019 Sep 6
DOI: https://doi.org/10.3365/KJMM.2019.57.10.656

Electrodialysis was used to develop a highly efficient process for concentrating and recovering Li from the Li-containing waste solution that is generated after recovering Co and Ni from a leach solution of waste cathode materials of Li ion batteries. The optimum conditions were investigated by comparing the concentration of Li..... More

                           Cited By 4
Separation of Tb(III) and Dy(III) from Chloride Solution by Extraction and Scrubbing with Ionic Liquid Prepared with Cyanex 272 and Aliquat 336
Cyanex 272와 Aliquat 336으로 제조한 이온성액체로 염산용액에서 추출과 세정에 의한 터븀(III) 및 디스프로슘(III)의 분리
Chang Geun Oh, Seong Ho Son, Man Seung Lee
오창근, 손성호, 이만승
Korean J. Met. Mater. 2019;57(8):499-505.   Published online 2019 Jul 8
DOI: https://doi.org/10.3365/KJMM.2019.57.8.499

Terbium and dysprosium are rare earth elements which are employed in the manufacture of advanced materials. Separating Tb(III) and Dy(III) is very complicated because their chemical properties are similar. In order to develop a separation process based on solvent extraction, extraction and scrubbing experiments were conducted using weak hydrochloric solutions..... More

                           Cited By 1
Diluents Role in Extraction and Possible Separation of Light Rare Earth Elements from Chloride Solutions by using Cyanex<sup></sup> 272 used as an Extractant
Rajesh Kumar Jyothi, Hae-Rim Kim, Joon Soo Kim, Kyeong-Woo Chung, Jin-Young Lee
Korean J. Met. Mater. 2018;56(10):763-771.   Published online 2018 Oct 5
DOI: https://doi.org/10.3365/KJMM.2018.56.10.763

The present paper deals with liquid-liquid extraction studies and the possible separation of light rare earths (LREs) from chloride solutions. Aromatic diluents such as benzene, toluene and xylene were tested for LREs extraction and possible separation from chloride solutions. Bis(2,4,4-triethylpentyl)phosphinic acid (trade name Cyanex® 272) was used as an extractant..... More

                           Cited By 2
Comparison of Counter Current Extraction Process of Pr & Nd Separation using Cyanex 572 and PC88A
Cyanex 572와 PC88A를 사용하여 Pr 및 Nd 분리 시 향류추출 공정 비교
Joo-eun Lee, Hong-Il So, Yeon-Chul Cho, Jae-Woo Ahn, Hong-in Kim, Jin-young Lee
이주은, 소홍일, 조연철, 안재우, 김홍인, 이진영
Korean J. Met. Mater. 2018;56(8):597-604.   Published online 2018 Aug 5
DOI: https://doi.org/10.3365/KJMM.2018.56.8.597

This study designed a counter current extraction process for comparing the separation efficiencies that are obtained using Cyanex 572 and PC88A for the elements in a Pr and Nd mixed solution. This process involves multiple extraction and scrubbing processes using a mixer settler. The process parameters are calculated using an..... More

                           Cited By 1
Comparison of the Extraction and Separation Behavior of La, Ce, Pr, Nd, Sm from Light Rare Earth Mixed Solutions by PC88A and Cyanex 572
경희토류 혼합용액에서 PC88A와 Cyanex 572에 의한 La, Ce, Pr, Nd, Sm의 추출·분리 거동 비교
Yeon-Chul Cho, Joo-eun Lee, Hong-Il So, Jae-Woo Ahn, Hong-in Kim, Jin-young Lee
조연철, 이주은, 소홍일, 안재우, 김홍인, 이진영
Korean J. Met. Mater. 2018;56(2):146-154.   Published online 2018 Feb 5
DOI: https://doi.org/10.3365/KJMM.2018.56.2.146

Solvent extraction of La, Ce, Pr, Nd and Sm from chloride solutions was studied using PC88A and Cyanex 572 as the extractants. Our results indicated that the acidity of the aqueous solution and saponification degree had some effect on the percentage extraction of metal ions. The distribution coefficient of the..... More

Separation of Rhenium (VII) and Vanadium (V) from Hydrochloric Acid Solutions by Solvent Extraction
Thi Hong Nguyen, Hoai Thanh Truong, Man Seung Lee
Korean J. Met. Mater. 2017;55(10):724-731.   Published online 2017 Sep 28
DOI: https://doi.org/10.3365/KJMM.2017.55.10.724

The separation of Re(VII) and V(V) by solvent extraction with TBP was investigated by varying the HCl, metal and chloride ion concentrations. Re(VII) was selectively extracted over V(V) from the HCl solution. The highest separation between Re(VII) and V(V) occurred at a concentration of 2.0 M HCl. The extraction reaction..... More

Separation and Recovery of Precious Metals from Leach Liquors of Spent Electronic Wastes by Solvent Extraction
Thi Hong Nguyen, Lingyun Wang, Man Seung Lee
Korean J. Met. Mater. 2017;55(4):247-255.   Published online 2017 Apr 6
DOI: https://doi.org/10.3365/KJMM.2017.55.4.247

Solvent extraction was employed to recover precious metals (Au (III), Pd (II) and Pt (IV)) from the leach solution of spent electronic wastes containing Cu (II), Cr (III) and Fe (III). First, pure Fe (III) and Au (III) were recovered by simultaneous extraction with Cyanex 923 followed by selective stripping..... More

         Cited By 13
Effect of HCl Concentration on the Oxidation of LIX 63 and the Subsequent Separation of Pd(II), Pt(IV), Ir(IV) and Rh(III) by Solvent Extraction
Thi Hong Nguyen, Man Seung Lee
Korean J. Met. Mater. 2016;54(10):768-774.   Published online 2016 Oct 5
DOI: https://doi.org/10.3365/KJMM.2016.54.10.768

During the selective extraction of Pd(II) by LIX 63 from 6 M HCl solutions containing platinum group metals, an oxidation-reduction reaction occurs between the LIX 63 and Ir(IV). Since the reduced Ir(III) cannot be extracted by solvating and amine extractants, the oxidation-reduction reaction has a significant effect on the separation..... More

         Cited By 8
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