公开(公告)号：US11473171B1

公开(公告)日：2022-10-18

申请号：US17828063

申请日：2022-05-31

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Feng Liang ,  Zhipeng Xie ,  Zhenggang Tang ,  Da Zhang ,  Bin Yang

IPC: H05B7/22 ,  C22B59/00 ,  H05H1/48 ,  C22B9/20 ,  H05B7/20 ,  H05B7/06

Abstract: The invention discloses a method about the integration of the metallurgical purification of metallic gadolinium and the preparation of gadolinium oxide nanoparticles (GONPs) by arc plasma. The method includes the metallurgical purification and the nanoparticle preparation. Firstly, the gadolinium ingot and a tungsten rod respectively act as an anode and a cathode. After the arc furnace is evacuated and then is filled with a working atmosphere, impurities in the gadolinium ingot are removed in the form of volatilization to obtain purified gadolinium by the first arc discharge. Whereafter, the purified gadolinium and the tungsten rod are used as the anode and cathode. After the arc furnace also is evacuated and then also is filled with a working atmosphere, GONPs are obtained from the inner wall of the arc furnace though the second arc discharge. The metallurgical purification of metallic gadolinium and the preparation of GONPs were integrated by arc plasma.

公开(公告)号：US11370663B1

公开(公告)日：2022-06-28

申请号：US17548606

申请日：2021-12-13

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Feng Liang ,  Zhipeng Xie ,  Zhenggang Tang ,  Xiecheng Yang ,  Da Zhang ,  Minjie Hou ,  Yao Kang ,  Bin Yang ,  Yongnian Dai

IPC: C01B32/18 ,  H01M10/0525 ,  H01M4/583 ,  H01M10/54

Abstract: The present disclosure relates to a method for production of nitrogen-doped single wall carbon nanohorns from anode graphite of wasted lithium-ion batteries. The method includes the following steps: a first step: forming recycled graphite powder into graphite blocks; and, a second contact step: when the first step is completed, using a DC arc plasma device to produce the graphite blocks into N-SWCNHs.

公开(公告)号：US20200208238A1

公开(公告)日：2020-07-02

申请号：US16357369

申请日：2019-03-19

Applicant: Kunming University of Science and Technology ,  Kunming Dingbang Technology Co., Ltd.

Inventor： Bin Yang ,  Dachun Liu ,  Wenlong Jiang ,  Guozheng Zha ,  Baoqiang Xu ,  Weiping Dai ,  Yifu Li ,  Qingchun Yu ,  Xiumin Chen ,  Hongwei Yang ,  Yang Tian ,  Yong Deng ,  Fei Wang ,  Heng Xiong ,  Jia Yang ,  Tao Qu ,  Lingxin Kong

IPC: C22B3/22 ,  C22B13/06

Abstract: A method for comprehensively processing noble lead provided and utilizes two instances of vacuum distillation to realize an open circuit of arsenic, lead, antimony and bismuth and the high-efficiency enrichment of precious metals of gold and silver, and can obtain elemental arsenic, a lead-bismuth-antimony alloy, a silver alloy and a copper alloy, respectively. The lead-bismuth-antimony alloy, the silver alloy and the copper alloy are processed by oxidation refining, electrorefining and chlorination refining to obtain refined lead, refined antimony, antimony trioxide, electrolytic silver and electrolytic copper, and to realize gold enrichment. The entire process has advantages of high metal direct yield, low energy consumption, short flow chart, simple equipment, etc., and vacuum distillation belongs to a physical process in which the alloy can be separated only by means of the difference in saturated vapor pressure between the metals, without generation of wastewater, waste gas and waste residue.