Recovery of tantalum from waste of hard alloys production
The main goal of the present work is the development of a technological process for the hydrometallurgical processing of iron-titanium cake with the production of tantalum oxide as an end-product and the development of the individual stages. Various methods of leaching tantalum-containing raw materi...
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| creator | Nechaev, A. V. Smirnov, A. V. Povetkin, K. A. Kleshchevnikov, M. B. |
| description | The main goal of the present work is the development of a technological process for the hydrometallurgical processing of iron-titanium cake with the production of tantalum oxide as an end-product and the development of the individual stages. Various methods of leaching tantalum-containing raw materials have been studied: sulfuric acid and hydrochloric acid processing, alkaline processing followed by sulfuric acid leaching, fluoride-sulfuric acid leaching. The use of a mixture of hydrofluoric and sulfuric acids is the most promising (recovery rate of Ta2O5 is 97.4%) and creates the preconditions for further solvent extraction of tantalum with the selected extractant – octanol-1. A scheme for the selective solvent extraction of tantalum after the leaching of the iron-titanium cake has been developed, the operating conditions of the extraction multistage countercurrent continuous cascade were selected. Samples of tantalum oxide containing Ta2O5 99.8 wt% have been produced by the sedimentation method from the tantalum re-extraction solution formed at the extraction cascade. |
| doi_str_mv | 10.1063/5.0074720 |
| format | Conference Proceeding |
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V. ; Smirnov, A. V. ; Povetkin, K. A. ; Kleshchevnikov, M. B.</creator><contributor>Goman, Victor ; Mironova, Maria</contributor><creatorcontrib>Nechaev, A. V. ; Smirnov, A. V. ; Povetkin, K. A. ; Kleshchevnikov, M. B. ; Goman, Victor ; Mironova, Maria</creatorcontrib><description>The main goal of the present work is the development of a technological process for the hydrometallurgical processing of iron-titanium cake with the production of tantalum oxide as an end-product and the development of the individual stages. Various methods of leaching tantalum-containing raw materials have been studied: sulfuric acid and hydrochloric acid processing, alkaline processing followed by sulfuric acid leaching, fluoride-sulfuric acid leaching. The use of a mixture of hydrofluoric and sulfuric acids is the most promising (recovery rate of Ta2O5 is 97.4%) and creates the preconditions for further solvent extraction of tantalum with the selected extractant – octanol-1. A scheme for the selective solvent extraction of tantalum after the leaching of the iron-titanium cake has been developed, the operating conditions of the extraction multistage countercurrent continuous cascade were selected. Samples of tantalum oxide containing Ta2O5 99.8 wt% have been produced by the sedimentation method from the tantalum re-extraction solution formed at the extraction cascade.</description><identifier>ISSN: 0094-243X</identifier><identifier>EISSN: 1551-7616</identifier><identifier>DOI: 10.1063/5.0074720</identifier><identifier>CODEN: APCPCS</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Hydrochloric acid ; Hydrochloric acid leaching ; Hydrometallurgy ; Iron ; Materials recovery ; Octanol ; Raw materials ; Solvent extraction ; Solvent extraction processes ; Sulfuric acid ; Sulfuric acid leaching ; Tantalum ; Tantalum oxides ; Titanium</subject><ispartof>AIP conference proceedings, 2022, Vol.2456 (1)</ispartof><rights>Author(s)</rights><rights>2022 Author(s). 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B.</creatorcontrib><title>Recovery of tantalum from waste of hard alloys production</title><title>AIP conference proceedings</title><description>The main goal of the present work is the development of a technological process for the hydrometallurgical processing of iron-titanium cake with the production of tantalum oxide as an end-product and the development of the individual stages. Various methods of leaching tantalum-containing raw materials have been studied: sulfuric acid and hydrochloric acid processing, alkaline processing followed by sulfuric acid leaching, fluoride-sulfuric acid leaching. The use of a mixture of hydrofluoric and sulfuric acids is the most promising (recovery rate of Ta2O5 is 97.4%) and creates the preconditions for further solvent extraction of tantalum with the selected extractant – octanol-1. A scheme for the selective solvent extraction of tantalum after the leaching of the iron-titanium cake has been developed, the operating conditions of the extraction multistage countercurrent continuous cascade were selected. Samples of tantalum oxide containing Ta2O5 99.8 wt% have been produced by the sedimentation method from the tantalum re-extraction solution formed at the extraction cascade.</description><subject>Hydrochloric acid</subject><subject>Hydrochloric acid leaching</subject><subject>Hydrometallurgy</subject><subject>Iron</subject><subject>Materials recovery</subject><subject>Octanol</subject><subject>Raw materials</subject><subject>Solvent extraction</subject><subject>Solvent extraction processes</subject><subject>Sulfuric acid</subject><subject>Sulfuric acid leaching</subject><subject>Tantalum</subject><subject>Tantalum oxides</subject><subject>Titanium</subject><issn>0094-243X</issn><issn>1551-7616</issn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2022</creationdate><recordtype>conference_proceeding</recordtype><recordid>eNp9kEtLAzEUhYMoWKsL_8GAO2HqzZ28ZinFFxQEUXAXMpkEW6bNmGQq_fdOacGdqwuH75xzOYRcU5hRENUdnwFIJhFOyIRyTkspqDglE4Calciqz3NykdIKAGsp1YTUb86GrYu7Ivgim0023bAufAzr4sek7Pbyl4ltYbou7FLRx9AONi_D5pKcedMld3W8U_Lx-PA-fy4Xr08v8_tF2VOhcumYAct9JVQDtfAOPaKsZSMpMi4s8IYhYAPWcskaq2zrKLXeCw6skqCqKbk55I7V34NLWa_CEDdjpUaBoJRC5CN1e6CSXWaz_0_3cbk2cae3IWquj7PovvX_wRT0fsc_Q_ULPo9jQg</recordid><startdate>20220118</startdate><enddate>20220118</enddate><creator>Nechaev, A. V.</creator><creator>Smirnov, A. V.</creator><creator>Povetkin, K. A.</creator><creator>Kleshchevnikov, M. B.</creator><general>American Institute of Physics</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20220118</creationdate><title>Recovery of tantalum from waste of hard alloys production</title><author>Nechaev, A. V. ; Smirnov, A. V. ; Povetkin, K. A. ; Kleshchevnikov, M. 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B.</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nechaev, A. V.</au><au>Smirnov, A. V.</au><au>Povetkin, K. A.</au><au>Kleshchevnikov, M. B.</au><au>Goman, Victor</au><au>Mironova, Maria</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Recovery of tantalum from waste of hard alloys production</atitle><btitle>AIP conference proceedings</btitle><date>2022-01-18</date><risdate>2022</risdate><volume>2456</volume><issue>1</issue><issn>0094-243X</issn><eissn>1551-7616</eissn><coden>APCPCS</coden><abstract>The main goal of the present work is the development of a technological process for the hydrometallurgical processing of iron-titanium cake with the production of tantalum oxide as an end-product and the development of the individual stages. Various methods of leaching tantalum-containing raw materials have been studied: sulfuric acid and hydrochloric acid processing, alkaline processing followed by sulfuric acid leaching, fluoride-sulfuric acid leaching. The use of a mixture of hydrofluoric and sulfuric acids is the most promising (recovery rate of Ta2O5 is 97.4%) and creates the preconditions for further solvent extraction of tantalum with the selected extractant – octanol-1. A scheme for the selective solvent extraction of tantalum after the leaching of the iron-titanium cake has been developed, the operating conditions of the extraction multistage countercurrent continuous cascade were selected. Samples of tantalum oxide containing Ta2O5 99.8 wt% have been produced by the sedimentation method from the tantalum re-extraction solution formed at the extraction cascade.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0074720</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-243X |
| ispartof | AIP conference proceedings, 2022, Vol.2456 (1) |
| issn | 0094-243X 1551-7616 |
| language | eng |
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| source | AIP Journals Complete |
| subjects | Hydrochloric acid Hydrochloric acid leaching Hydrometallurgy Iron Materials recovery Octanol Raw materials Solvent extraction Solvent extraction processes Sulfuric acid Sulfuric acid leaching Tantalum Tantalum oxides Titanium |
| title | Recovery of tantalum from waste of hard alloys production |
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