Invention Grant
- Patent Title: Method for producing alumina
- Patent Title (中): 氧化铝生产方法
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Application No.: US14417724Application Date: 2012-08-01
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Publication No.: US09322080B2Publication Date: 2016-04-26
- Inventor: Aleksandr Sergeevich Senyuta , Andrey Vladimirovich Panov , Aleksandr Gennad'evich Suss , Aleksandr Aleksandrovich Damaskin
- Applicant: Aleksandr Sergeevich Senyuta , Andrey Vladimirovich Panov , Aleksandr Gennad'evich Suss , Aleksandr Aleksandrovich Damaskin
- Applicant Address: RU G. Krasnoyarsk
- Assignee: United Company RUSAL Engineering and Technology Centre LLC
- Current Assignee: United Company RUSAL Engineering and Technology Centre LLC
- Current Assignee Address: RU G. Krasnoyarsk
- Agency: Hogan Lovells US LLP
- International Application: PCT/RU2012/000630 WO 20120801
- International Announcement: WO2014/021729 WO 20140206
- Main IPC: C22B21/00
- IPC: C22B21/00 ; C01F7/22 ; C01F7/56 ; C01F7/30 ; C22B3/10
Abstract:
The invention relates to acid methods for producing alumina for use in processing low-grade aluminum-containing raw materials. The method provides treating aluminum-containing raw materials with hydrochloric acid, crystallizing aluminum chloride hexahydrate by evaporating the supernatant chloride solution, and thermally decomposing the aluminum chloride hexahydrate to form aluminum. Crystallization is carried out with the addition of calcium chloride.
Public/Granted literature
- US20150203936A1 METHOD FOR PRODUCING ALUMINA Public/Granted day:2015-07-23
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