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公开(公告)号:US11879165B2
公开(公告)日:2024-01-23
申请号:US16968275
申请日:2019-02-09
摘要: The present disclosure relates to a process for recovering vanadium in the form of iron vanadate from a gasifier slag. The process comprises pulverizing the slag to obtain pulverized slag (2). The pulverized slag (2) is soaked in water (6) and an alkali salt (4) to obtain a slurry (8), followed by roasting the slurry in the presence of air to obtain roasted slag (12) which is leached (14) to obtain a first solution (18). The first solution (18) is heated at a temperature in the range of 60° C. to 80° C. while adding an iron salt (17) in an amount in the range of 10 wt % to 60 wt % at a pH in the range of 4 to 10, to obtain a second solid residue (21) which is dried to obtain iron vanadate (24).
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公开(公告)号:US20230411723A1
公开(公告)日:2023-12-21
申请号:US18211227
申请日:2023-06-16
发明人: Alfred Salazar , Tarun K. Bhatt , Micki Kennedy
IPC分类号: H01M10/54 , C01G39/02 , C01F7/34 , C01D15/08 , C01G53/10 , C01G45/02 , C01G51/10 , C04B5/00 , C22B26/12 , C22B3/00 , C22C1/00 , C22B34/34 , C22B34/22 , B09B3/38 , B09B3/40 , B09B3/80 , C01G31/02
CPC分类号: H01M10/54 , C01G39/02 , C01F7/34 , C01D15/08 , C01G53/10 , C01G45/02 , C01G51/10 , C04B5/00 , C22B26/12 , C22B23/0415 , C22C1/00 , C22B34/345 , C22B34/225 , B09B3/38 , B09B3/40 , B09B3/80 , C01G31/02 , B09B2101/16
摘要: Integrated recycling method and processes including recycling spent catalyst to produce one or more water-soluble metal salts and one or more water-insoluble tail byproducts, and recycling rechargeable batteries to produce one or more battery-grade metals and one or more pure metallic byproducts, wherein the water insoluble tail byproduct is a feedstock in recycling the rechargeable batteries, the impure metallic byproduct is a feedstock in recycling the spent catalyst, or both.
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公开(公告)号:US11682801B1
公开(公告)日:2023-06-20
申请号:US17835852
申请日:2022-06-08
发明人: Alfred Salazar , Tarun K. Bhatt , Micki Kennedy
IPC分类号: C01G39/02 , C01F7/34 , H01M10/54 , C01D15/08 , C01G53/10 , C01G45/02 , C01G51/10 , C04B5/00 , C22B26/12 , C22B3/00 , C22C1/00 , C22B34/34 , C22B34/22 , B09B3/38 , B09B3/40 , B09B3/80 , C01G31/02 , B09B101/16
CPC分类号: H01M10/54 , B09B3/38 , B09B3/40 , B09B3/80 , C01D15/08 , C01F7/34 , C01G31/02 , C01G39/02 , C01G45/02 , C01G51/10 , C01G53/10 , C04B5/00 , C22B23/0415 , C22B26/12 , C22B34/225 , C22B34/345 , C22C1/00 , B09B2101/16
摘要: Integrated recycling method and processes including recycling spent catalyst to produce one or more water-soluble metal salts and one or more water-insoluble tail byproducts, and recycling rechargeable batteries to produce one or more battery-grade metals and one or more pure metallic byproducts, wherein the water insoluble tail byproduct is a feedstock in recycling the rechargeable batteries, the impure metallic byproduct is a feedstock in recycling the spent catalyst, or both.
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公开(公告)号:US20220259696A1
公开(公告)日:2022-08-18
申请号:US17625444
申请日:2020-07-08
申请人: Chevron U.S.A. Inc.
发明人: Rahul Shankar Bhaduri , Bruce Edward Reynolds , Oleg A. Mironov , Alexander Kuperman , Woodrow K. Shiflett
摘要: An improved method for recovering metals from spent catalysts, particularly from spent slurry catalysts, is disclosed. The method and associated processes comprising the method are useful to recover catalyst metals used in the petroleum and chemical processing industries. The method generally involves a pyrometallurgical method and a hydrometallurgical method and includes forming a soda ash calcine of a caustic leach residue of the spent catalyst containing an insoluble Group VIII/Group VIB/Group VB metal compound combined with soda ash, and extracting and recovering soluble Group VIB metal and soluble Group VB metal compounds from the soda ash calcine.
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公开(公告)号:US11299796B2
公开(公告)日:2022-04-12
申请号:US16302478
申请日:2017-05-12
发明人: Kota Nakashima , Akira Yoshimura , Seiichiro Tani
摘要: An object of the present invention is to recover a minor metal and/or rare-earth metal.
The present invention provides a method for recovering a minor metal and/or rare-earth metal from a post-chlorination residue in titanium smelting.
The minor metal and/or rare-earth metal is one or more metal selected from the group consisting of Sc, V, Nb, Zr, Y, La, Ce, Pr, and Nd.-
公开(公告)号:US10974968B2
公开(公告)日:2021-04-13
申请号:US16565828
申请日:2019-09-10
发明人: Xiaodi Xu , Honghui Zhou
摘要: The present invention discloses a process for recovering ammonia from vanadium preparation for ammonium preparation and recycling wastewater. A conventional vanadium extraction process is complex, and the most difficult to control and treat are ammonia emissions and wastewater treatment. The present process can directly extract ammonium metavanadate and ammonium polyvanadate from the beginning of mining and smelting, and gather all emitted ammonia to prepare ammonium in the process of preparing high-purity vanadium pentoxide by using the ammonium metavanadate or the ammonium polyvanadate, thereby ensuring zero emission of the exhaust gas, and effectively treat all wastewater generated in the above process by using a polyacid ester flocculation technology, thereby ensuring that the wastewater is not discharged but recycled, and realizing that the purity of all products reaches 99.5-99.99%.
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公开(公告)号:US20210079488A1
公开(公告)日:2021-03-18
申请号:US17104970
申请日:2020-11-25
发明人: Gary McNeish
IPC分类号: C21B13/00 , C21B13/14 , C22B21/00 , C22B47/00 , C22B34/32 , C22B34/22 , C22B34/12 , C22B3/02 , C21B13/08
摘要: A method of processing red mud comprising: heating red mud to a predetermined temperature; grinding the red mud to a predetermined particle size; and physically extracting iron components from the red mud; physically extracting aluminum components from the red mud, said physically extracting of aluminum components being separate from the physically extracting of iron components, wherein the steps of physically extracting iron components and physically extracting aluminum components are performed without requiring addition of chemical additives to the red mud.
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公开(公告)号:US10913989B2
公开(公告)日:2021-02-09
申请号:US15123624
申请日:2015-02-27
发明人: Jin-Young Lee , Hoo-In Lee
摘要: The present invention relates to a method for leaching precious metals contained in a waste denitrification catalyst by using a pressure leaching process, and more specifically, to a method for leaching precious metals contained in a waste denitrification catalyst by using a pressure leaching process, the method comprising the steps of: forming a mixture by mixing a waste denitrification catalyst with a sodium salt solution; and leaching vanadium and tungsten contained in the mixture by feeding the mixture into a sealed pressurized reactor, and then heating and stirring the mixture.
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公开(公告)号:US20200370145A1
公开(公告)日:2020-11-26
申请号:US16968275
申请日:2019-02-09
摘要: The present disclosure relates to a process for recovering vanadium in the form of iron vanadate from a gasifier slag. The process comprises pulverizing the slag to obtain pulverized slag (2). The pulverized slag (2) is soaked in water (6) and an alkali salt (4) to obtain a slurry (8), followed by roasting the slurry in the presence of air to obtain roasted slag (12) which is leached (14) to obtain a first solution (18). The first solution (18) is heated at a temperature in the range of 60° C. to 80° C. while adding an iron salt (17) in an amount in the range of 10 wt % to 60 wt % at a pH in the range of 4 to 10, to obtain a second solid residue (21) which is dried to obtain iron vanadate (24).
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10.
公开(公告)号:US20200087152A1
公开(公告)日:2020-03-19
申请号:US16565828
申请日:2019-09-10
发明人: Xiaodi Xu , Honghui Zhou
摘要: The present invention discloses a process for recovering ammonia from vanadium preparation for ammonium preparation and recycling wastewater. A conventional vanadium extraction process is complex, and the most difficult to control and treat are ammonia emissions and wastewater treatment. The present process can directly extract ammonium metavanadate and ammonium polyvanadate from the beginning of mining and smelting, and gather all emitted ammonia to prepare ammonium in the process of preparing high-purity vanadium pentoxide by using the ammonium metavanadate or the ammonium polyvanadate, thereby ensuring zero emission of the exhaust gas, and effectively treat all wastewater generated in the above process by using a polyacid ester folucculation technology, thereby ensuring that the wastewater is not discharged but recycled, and realizing that the purity of all products reaches 99.5-99.99%.
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