公开(公告)号：US20240375956A1

公开(公告)日：2024-11-14

申请号：US18691363

申请日：2022-03-24

Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Baoqiang XU ,  Huan LUO ,  Bin YANG ,  Wenlong JIANG ,  Lang LIU ,  Guozheng ZHA ,  Heng XIONG ,  Yang TIAN ,  Lingxin KONG ,  Yifu LI ,  Fei WANG ,  Jia YANG ,  Tao QU ,  Dachun LIU

IPC: C01B19/02 ,  B01D3/10 ,  B01D3/14

Abstract: Disclosed is a method for removing impurity mercury from crude selenium. The method includes: mixing a vulcanizing agent with a crude selenium slag that is crushed to not more than 200 mesh uniformly, and performing briquetting to obtain a mixed material; adding the mixed material into a sealed furnace, and subjecting the mixed material to vulcanization by heating under an inert atmosphere to obtain a vulcanized selenium; subjecting the vulcanized selenium to primary vacuum distillation, such that selenium is converted into a gas phase and collected in a form of a volatile, and generated mercury sulfide and valuable elements are enriched in a resulting residue; and subjecting the selenium to secondary distillation to further remove mercury.