Recovery of aluminum oxide and iron oxide from aluminum electrolysis iron-rich cover material and preparation of aluminum fluoride
In aluminum electrolysis, the iron-rich cover material is formed on the cover material and the steel rod connecting the carbon anode. Due to the high iron content in the iron-rich cover material, it differs from traditional cover material and thus requires harmless recycling and treatment. A process...
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| creator | Lan, Jinghao Yan, Hengwei Liu, Zhanwei Ma, Wenhui |
| description | In aluminum electrolysis, the iron-rich cover material is formed on the cover material and the steel rod connecting the carbon anode. Due to the high iron content in the iron-rich cover material, it differs from traditional cover material and thus requires harmless recycling and treatment. A process was proposed and used in this study to recovery F, Al, and Fe elements from the iron-rich cover material. This process involved aluminum sulfate solution leaching for fluorine recovery and alkali-acid synergistic leaching for α-Al
2
O
3
and Fe
2
O
3
recovery were obtained. The optimal leaching rates for F, Na, Ca, Fe, and Si were 93.92, 96.25, 94.53, 4.48, and 28.87%, respectively. The leaching solution and leaching residue were obtained. The leaching solution was neutralized to obtain the aluminum hydroxide fluoride hydrate (AHFH, AlF
1.5
(OH)
1.5
·(H
2
O)
0.375
). AHFH was calcined to form a mixture of AlF
3
and Al
2
O
3
with a purity of 96.14%. The overall recovery rate of F in the entire process was 92.36%. Additionally, the leaching residue was sequentially leached with alkali and acid to obtain the acid leach residue α-Al
2
O
3
. The pH of the acid-leached solution was adjusted to produce a black-brown precipitate, which was converted to Fe
2
O
3
under a high-temperature calcination, and the recovery rate of Fe in the whole process was 94.54%. Therefore, this study provides a new method for recovering F, Al, and Fe in iron-rich cover material, enabling the utilization of aluminum hazardous waste sources. |
| doi_str_mv | 10.1007/s11356-024-32877-y |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_2974005389</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>3046984659</sourcerecordid><originalsourceid>FETCH-LOGICAL-c274y-166ad471ac1b01a1ca7270d8d23f1fd408743d77da71ef33bddd3ff55904daab3</originalsourceid><addsrcrecordid>eNqFkctKxDAUhoMoznh5ARdScOOmmlubdimDNxgQRNchbRLNkDY1mYrd-uR22tEZXOgqJ5zvfIfDD8AJghcIQnYZECJJGkNMY4IzxuJuB0xRimjMaJ7vbtUTcBDCAkIMc8z2wYRkCcIJI1Pw-ahK9658FzkdCdtWpm6ryH0YqSJRy8h4V6-_2rtqgyiryqV3tgsmDFTsTfkaDbKoEkvljbCDovGqEV4szcq0tUTb1vlefAT2tLBBHa_fQ_B8c_00u4vnD7f3s6t5XGJGuxilqZCUIVGiAiKBSsEwgzKTmGikJYUZo0QyJgVDShNSSCmJ1kmSQyqFKMghOB-9jXdvrQpLXplQKmtFrVwbOEEJSXHOkvxftKcohAnJVujZL3ThWl_3h3ACaZpnNB2EeKRK70LwSvPGm0r4jiPIV2HyMUzeh8mHMHnXD52u1W1RKfkz8p1eD5ARCH2rflF-s_sP7Rese61J</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>3046984659</pqid></control><display><type>article</type><title>Recovery of aluminum oxide and iron oxide from aluminum electrolysis iron-rich cover material and preparation of aluminum fluoride</title><source>MEDLINE</source><source>SpringerLink Journals</source><creator>Lan, Jinghao ; Yan, Hengwei ; Liu, Zhanwei ; Ma, Wenhui</creator><creatorcontrib>Lan, Jinghao ; Yan, Hengwei ; Liu, Zhanwei ; Ma, Wenhui</creatorcontrib><description>In aluminum electrolysis, the iron-rich cover material is formed on the cover material and the steel rod connecting the carbon anode. Due to the high iron content in the iron-rich cover material, it differs from traditional cover material and thus requires harmless recycling and treatment. A process was proposed and used in this study to recovery F, Al, and Fe elements from the iron-rich cover material. This process involved aluminum sulfate solution leaching for fluorine recovery and alkali-acid synergistic leaching for α-Al
2
O
3
and Fe
2
O
3
recovery were obtained. The optimal leaching rates for F, Na, Ca, Fe, and Si were 93.92, 96.25, 94.53, 4.48, and 28.87%, respectively. The leaching solution and leaching residue were obtained. The leaching solution was neutralized to obtain the aluminum hydroxide fluoride hydrate (AHFH, AlF
1.5
(OH)
1.5
·(H
2
O)
0.375
). AHFH was calcined to form a mixture of AlF
3
and Al
2
O
3
with a purity of 96.14%. The overall recovery rate of F in the entire process was 92.36%. Additionally, the leaching residue was sequentially leached with alkali and acid to obtain the acid leach residue α-Al
2
O
3
. The pH of the acid-leached solution was adjusted to produce a black-brown precipitate, which was converted to Fe
2
O
3
under a high-temperature calcination, and the recovery rate of Fe in the whole process was 94.54%. Therefore, this study provides a new method for recovering F, Al, and Fe in iron-rich cover material, enabling the utilization of aluminum hazardous waste sources.</description><identifier>ISSN: 1614-7499</identifier><identifier>ISSN: 0944-1344</identifier><identifier>EISSN: 1614-7499</identifier><identifier>DOI: 10.1007/s11356-024-32877-y</identifier><identifier>PMID: 38512573</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer Berlin Heidelberg</publisher><subject>Acids ; Aluminum ; Aluminum - chemistry ; Aluminum Compounds - chemistry ; aluminum fluoride ; Aluminum fluorides ; Aluminum hydroxide ; Aluminum oxide ; Aluminum Oxide - chemistry ; Aluminum sulfate ; anodes ; Aquatic Pollution ; Atmospheric Protection/Air Quality Control/Air Pollution ; carbon ; Connecting rods ; Earth and Environmental Science ; Ecotoxicology ; Electrolysis ; Environment ; Environmental Chemistry ; Environmental Health ; Ferric Compounds - chemistry ; Ferric oxide ; Fluorides ; Fluorides - chemistry ; Fluorine ; hazardous waste ; Hazardous wastes ; High temperature ; Iron ; Iron - chemistry ; Iron oxides ; Leaching ; Recycling ; Research Article ; Residues ; Roasting ; steel ; Waste Water Technology ; Water Management ; Water Pollution Control</subject><ispartof>Environmental science and pollution research international, 2024-04, Vol.31 (18), p.27388-27402</ispartof><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><rights>2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c274y-166ad471ac1b01a1ca7270d8d23f1fd408743d77da71ef33bddd3ff55904daab3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11356-024-32877-y$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11356-024-32877-y$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27903,27904,41467,42536,51297</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/38512573$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lan, Jinghao</creatorcontrib><creatorcontrib>Yan, Hengwei</creatorcontrib><creatorcontrib>Liu, Zhanwei</creatorcontrib><creatorcontrib>Ma, Wenhui</creatorcontrib><title>Recovery of aluminum oxide and iron oxide from aluminum electrolysis iron-rich cover material and preparation of aluminum fluoride</title><title>Environmental science and pollution research international</title><addtitle>Environ Sci Pollut Res</addtitle><addtitle>Environ Sci Pollut Res Int</addtitle><description>In aluminum electrolysis, the iron-rich cover material is formed on the cover material and the steel rod connecting the carbon anode. Due to the high iron content in the iron-rich cover material, it differs from traditional cover material and thus requires harmless recycling and treatment. A process was proposed and used in this study to recovery F, Al, and Fe elements from the iron-rich cover material. This process involved aluminum sulfate solution leaching for fluorine recovery and alkali-acid synergistic leaching for α-Al
2
O
3
and Fe
2
O
3
recovery were obtained. The optimal leaching rates for F, Na, Ca, Fe, and Si were 93.92, 96.25, 94.53, 4.48, and 28.87%, respectively. The leaching solution and leaching residue were obtained. The leaching solution was neutralized to obtain the aluminum hydroxide fluoride hydrate (AHFH, AlF
1.5
(OH)
1.5
·(H
2
O)
0.375
). AHFH was calcined to form a mixture of AlF
3
and Al
2
O
3
with a purity of 96.14%. The overall recovery rate of F in the entire process was 92.36%. Additionally, the leaching residue was sequentially leached with alkali and acid to obtain the acid leach residue α-Al
2
O
3
. The pH of the acid-leached solution was adjusted to produce a black-brown precipitate, which was converted to Fe
2
O
3
under a high-temperature calcination, and the recovery rate of Fe in the whole process was 94.54%. Therefore, this study provides a new method for recovering F, Al, and Fe in iron-rich cover material, enabling the utilization of aluminum hazardous waste sources.</description><subject>Acids</subject><subject>Aluminum</subject><subject>Aluminum - chemistry</subject><subject>Aluminum Compounds - chemistry</subject><subject>aluminum fluoride</subject><subject>Aluminum fluorides</subject><subject>Aluminum hydroxide</subject><subject>Aluminum oxide</subject><subject>Aluminum Oxide - chemistry</subject><subject>Aluminum sulfate</subject><subject>anodes</subject><subject>Aquatic Pollution</subject><subject>Atmospheric Protection/Air Quality Control/Air Pollution</subject><subject>carbon</subject><subject>Connecting rods</subject><subject>Earth and Environmental Science</subject><subject>Ecotoxicology</subject><subject>Electrolysis</subject><subject>Environment</subject><subject>Environmental Chemistry</subject><subject>Environmental Health</subject><subject>Ferric Compounds - chemistry</subject><subject>Ferric oxide</subject><subject>Fluorides</subject><subject>Fluorides - chemistry</subject><subject>Fluorine</subject><subject>hazardous waste</subject><subject>Hazardous wastes</subject><subject>High temperature</subject><subject>Iron</subject><subject>Iron - chemistry</subject><subject>Iron oxides</subject><subject>Leaching</subject><subject>Recycling</subject><subject>Research Article</subject><subject>Residues</subject><subject>Roasting</subject><subject>steel</subject><subject>Waste Water Technology</subject><subject>Water Management</subject><subject>Water Pollution Control</subject><issn>1614-7499</issn><issn>0944-1344</issn><issn>1614-7499</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkctKxDAUhoMoznh5ARdScOOmmlubdimDNxgQRNchbRLNkDY1mYrd-uR22tEZXOgqJ5zvfIfDD8AJghcIQnYZECJJGkNMY4IzxuJuB0xRimjMaJ7vbtUTcBDCAkIMc8z2wYRkCcIJI1Pw-ahK9658FzkdCdtWpm6ryH0YqSJRy8h4V6-_2rtqgyiryqV3tgsmDFTsTfkaDbKoEkvljbCDovGqEV4szcq0tUTb1vlefAT2tLBBHa_fQ_B8c_00u4vnD7f3s6t5XGJGuxilqZCUIVGiAiKBSsEwgzKTmGikJYUZo0QyJgVDShNSSCmJ1kmSQyqFKMghOB-9jXdvrQpLXplQKmtFrVwbOEEJSXHOkvxftKcohAnJVujZL3ThWl_3h3ACaZpnNB2EeKRK70LwSvPGm0r4jiPIV2HyMUzeh8mHMHnXD52u1W1RKfkz8p1eD5ARCH2rflF-s_sP7Rese61J</recordid><startdate>20240401</startdate><enddate>20240401</enddate><creator>Lan, Jinghao</creator><creator>Yan, Hengwei</creator><creator>Liu, Zhanwei</creator><creator>Ma, Wenhui</creator><general>Springer Berlin Heidelberg</general><general>Springer Nature B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7SN</scope><scope>7T7</scope><scope>7TV</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>K9.</scope><scope>M7N</scope><scope>P64</scope><scope>7X8</scope><scope>7S9</scope><scope>L.6</scope></search><sort><creationdate>20240401</creationdate><title>Recovery of aluminum oxide and iron oxide from aluminum electrolysis iron-rich cover material and preparation of aluminum fluoride</title><author>Lan, Jinghao ; Yan, Hengwei ; Liu, Zhanwei ; Ma, Wenhui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c274y-166ad471ac1b01a1ca7270d8d23f1fd408743d77da71ef33bddd3ff55904daab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Acids</topic><topic>Aluminum</topic><topic>Aluminum - chemistry</topic><topic>Aluminum Compounds - chemistry</topic><topic>aluminum fluoride</topic><topic>Aluminum fluorides</topic><topic>Aluminum hydroxide</topic><topic>Aluminum oxide</topic><topic>Aluminum Oxide - chemistry</topic><topic>Aluminum sulfate</topic><topic>anodes</topic><topic>Aquatic Pollution</topic><topic>Atmospheric Protection/Air Quality Control/Air Pollution</topic><topic>carbon</topic><topic>Connecting rods</topic><topic>Earth and Environmental Science</topic><topic>Ecotoxicology</topic><topic>Electrolysis</topic><topic>Environment</topic><topic>Environmental Chemistry</topic><topic>Environmental Health</topic><topic>Ferric Compounds - chemistry</topic><topic>Ferric oxide</topic><topic>Fluorides</topic><topic>Fluorides - chemistry</topic><topic>Fluorine</topic><topic>hazardous waste</topic><topic>Hazardous wastes</topic><topic>High temperature</topic><topic>Iron</topic><topic>Iron - chemistry</topic><topic>Iron oxides</topic><topic>Leaching</topic><topic>Recycling</topic><topic>Research Article</topic><topic>Residues</topic><topic>Roasting</topic><topic>steel</topic><topic>Waste Water Technology</topic><topic>Water Management</topic><topic>Water Pollution Control</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lan, Jinghao</creatorcontrib><creatorcontrib>Yan, Hengwei</creatorcontrib><creatorcontrib>Liu, Zhanwei</creatorcontrib><creatorcontrib>Ma, Wenhui</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Ecology Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Pollution Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>MEDLINE - Academic</collection><collection>AGRICOLA</collection><collection>AGRICOLA - Academic</collection><jtitle>Environmental science and pollution research international</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lan, Jinghao</au><au>Yan, Hengwei</au><au>Liu, Zhanwei</au><au>Ma, Wenhui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Recovery of aluminum oxide and iron oxide from aluminum electrolysis iron-rich cover material and preparation of aluminum fluoride</atitle><jtitle>Environmental science and pollution research international</jtitle><stitle>Environ Sci Pollut Res</stitle><addtitle>Environ Sci Pollut Res Int</addtitle><date>2024-04-01</date><risdate>2024</risdate><volume>31</volume><issue>18</issue><spage>27388</spage><epage>27402</epage><pages>27388-27402</pages><issn>1614-7499</issn><issn>0944-1344</issn><eissn>1614-7499</eissn><abstract>In aluminum electrolysis, the iron-rich cover material is formed on the cover material and the steel rod connecting the carbon anode. Due to the high iron content in the iron-rich cover material, it differs from traditional cover material and thus requires harmless recycling and treatment. A process was proposed and used in this study to recovery F, Al, and Fe elements from the iron-rich cover material. This process involved aluminum sulfate solution leaching for fluorine recovery and alkali-acid synergistic leaching for α-Al
2
O
3
and Fe
2
O
3
recovery were obtained. The optimal leaching rates for F, Na, Ca, Fe, and Si were 93.92, 96.25, 94.53, 4.48, and 28.87%, respectively. The leaching solution and leaching residue were obtained. The leaching solution was neutralized to obtain the aluminum hydroxide fluoride hydrate (AHFH, AlF
1.5
(OH)
1.5
·(H
2
O)
0.375
). AHFH was calcined to form a mixture of AlF
3
and Al
2
O
3
with a purity of 96.14%. The overall recovery rate of F in the entire process was 92.36%. Additionally, the leaching residue was sequentially leached with alkali and acid to obtain the acid leach residue α-Al
2
O
3
. The pH of the acid-leached solution was adjusted to produce a black-brown precipitate, which was converted to Fe
2
O
3
under a high-temperature calcination, and the recovery rate of Fe in the whole process was 94.54%. Therefore, this study provides a new method for recovering F, Al, and Fe in iron-rich cover material, enabling the utilization of aluminum hazardous waste sources.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>38512573</pmid><doi>10.1007/s11356-024-32877-y</doi><tpages>15</tpages></addata></record> |
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| source | MEDLINE; SpringerLink Journals |
| subjects | Acids Aluminum Aluminum - chemistry Aluminum Compounds - chemistry aluminum fluoride Aluminum fluorides Aluminum hydroxide Aluminum oxide Aluminum Oxide - chemistry Aluminum sulfate anodes Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution carbon Connecting rods Earth and Environmental Science Ecotoxicology Electrolysis Environment Environmental Chemistry Environmental Health Ferric Compounds - chemistry Ferric oxide Fluorides Fluorides - chemistry Fluorine hazardous waste Hazardous wastes High temperature Iron Iron - chemistry Iron oxides Leaching Recycling Research Article Residues Roasting steel Waste Water Technology Water Management Water Pollution Control |
| title | Recovery of aluminum oxide and iron oxide from aluminum electrolysis iron-rich cover material and preparation of aluminum fluoride |
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