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公开(公告)号：US20240287644A1
公开(公告)日：2024-08-29
申请号：US18043943
申请日：2022-10-12
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Bin YANG , Baoqiang XU , Wenlong JIANG , Juhai DENG , Dachun LIU , Yang TIAN , Yifu LI , Lingxin KONG , Jia YANG
CPC classification number: C22B7/007 , C22B1/06 , C22B7/001 , C22B13/025 , C22B15/0017 , C22B15/0056 , C22B15/0071 , C22B30/04 , C22B30/06 , C22B61/00 , C25C1/20
Abstract: Provided is a recovery method for valuable metals in copper anode slime. By using the recovery method of the disclosure, selenium, copper, tellurium, arsenic, lead, bismuth, and precious metals gold and silver in the copper anode slime are recovered. The method adopts two-step vacuum carbothermal reduction to replace reduction smelting of anode slime and stepwise blowing of noble lead in the traditional pyrometallurgy, and avoids the emission of arsenic-containing soot in the traditional process. The recovered gold-rich residue contains almost no base metals such as lead, bismuth, antimony, and arsenic. After subjecting the gold-rich residue to leaching gold by chlorination and reduction, a gold powder could be obtained therefrom with a lower content of base metals than traditional processes. Therefore, the method greatly reduces the amount of produced slag, shortens the production cycle, and reduces the loss of precious metals in the slag.
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公开(公告)号：US20230191478A1
公开(公告)日：2023-06-22
申请号：US17928471
申请日：2022-03-24
Applicant: Kunming University of Science and Technology
Inventor： Baoqiang XU , Tengteng SHI , Bin YANG , Wenlong JIANG , Yang TIAN , Lingxin KONG , Jinyang ZHAO , Fei WANG
IPC: B22D43/00
CPC classification number: B22D43/007
Abstract: Disclosed is a device for continuous treatment of materials containing volatile components, which belongs to the field of pyrometallurgical equipment. The device includes a feeding unit, a heating unit, a slag raking unit and a slag collecting unit. The feeding unit is configured to feed the materials with a push rod or in a spiral mode. The heating unit is provided with a square furnace body, and a first slag raking port is provided in the lower part of the furnace body. The slag collecting unit is provided with a slag discharging port at the lower portion thereof, is provided with a slag smashing port at the sidewall thereof, and is provided with a viewing port at the top thereof. The slag collecting unit and the heating unit are connected through a pipeline, thus achieving the pressure balance of the whole device during operation.
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公开(公告)号：US20250075289A1
公开(公告)日：2025-03-06
申请号：US18805621
申请日：2024-08-15
Applicant: Kunming University of Science and Technology
Inventor： Lingxin KONG , Jian PANG , Bin YANG , Baoqiang XU , Wenlong JIANG , Junjie XU , Dachun LIU , Yang TIAN , Yong DENG
Abstract: Provided is a method for preparing high-purity indium (In). The method for preparing the high-purity In includes: distilling refined In to obtain an In vapor-containing gas; and condensing the In vapor-containing gas to obtain the high-purity In; where the distilling is conducted at a temperature of 1,000° C. to 1,100° C. under a vacuum degree of 1.0×10−3 Pa to 5.0×10−2 Pa; and the condensing is conducted at a temperature of 700° C. to 900° C. under a vacuum degree of 1.0×10−3 Pa to 5.0×10−2 Pa. The In vapor-containing gas is obtained by controlling the temperature and vacuum degree of the distilling to evaporate In and impurities with a vapor pressure higher than the In. The temperature and vacuum degree of the condensing are adjusted to condense the In in the In vapor-containing gas.
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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
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.
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