Matches in SemOpenAlex for { <https://semopenalex.org/work/W2912365769> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W2912365769 endingPage "114" @default.
- W2912365769 startingPage "114" @default.
- W2912365769 abstract "A novel process for recovering iron, niobium and scandium from Bayan Obo tailings has been developed. In this paper, the treatment of Bayan Obo tailings by Ca(OH) 2 -coal roasting and sulfuric acid leaching process was investigated. In the Ca(OH) 2 -coal roasting process, niobium-bearing minerals are converted to CaTiO 3 structure of Ca(Ti 0.8 ,Fe 0.1 ,Nb 0.1 )O 3 and Ca 2 Nb 2 O 7 which are soluble in sulfuric acid. The pyroxene and amphibole that are Sc-bearing silicates are mainly decomposed and reduced into metallic iron which can be recycled by weak magnetic separation. Scandium in the silicates is converted to Sc 2 O 3 . In the sulfuric acid leaching process, Ca(Ti 0.8 ,Fe 0.1 ,Nb 0.1 )O 3 and Ca 2 Nb 2 O 7 are converted to Nb(OH) 5 that could easily dissolve in sulfuric acid by dissociating into Nb(OH) 4+ and OH − when Sc 2 O 3 is dissolved into heat sulfuric acid. Bayan Obo tailings were roasted with Ca(OH) 2 -coal at elevated temperature, followed by magnetic separation and sulfuric acid leaching. The optimized experimental parameters are proposed as follows: Ca(OH) 2 -coal-tailings mass ratio of 20: 5: 100; roasting at 1200 °C for 2 h; the magnetic field (magnetic separation) of 270 mT; the liquid-solid ratio of 4:1 (ml/g); leaching at 245 °C for 1 h. Iron concentrate with a grade of 88.39% and a recovery rate of 91.92% is obtained. The leaching results show that the leaching rates of niobium and scandium could achieve 95.52% and 95.75%, respectively." @default.
- W2912365769 created "2019-02-21" @default.
- W2912365769 creator A5007312438 @default.
- W2912365769 creator A5011877804 @default.
- W2912365769 creator A5021934581 @default.
- W2912365769 creator A5082252890 @default.
- W2912365769 creator A5083538605 @default.
- W2912365769 date "2019-01-01" @default.
- W2912365769 modified "2023-10-14" @default.
- W2912365769 title "Study on recycling and leaching valuable elements from Bayan Obo tailings" @default.
- W2912365769 cites W1990977603 @default.
- W2912365769 cites W2005258787 @default.
- W2912365769 cites W2009063329 @default.
- W2912365769 cites W2035720307 @default.
- W2912365769 cites W2036059578 @default.
- W2912365769 cites W2037366842 @default.
- W2912365769 cites W2059362830 @default.
- W2912365769 cites W2070227006 @default.
- W2912365769 cites W2075845075 @default.
- W2912365769 cites W2132444117 @default.
- W2912365769 cites W2156117488 @default.
- W2912365769 doi "https://doi.org/10.1051/metal/2018040" @default.
- W2912365769 hasPublicationYear "2019" @default.
- W2912365769 type Work @default.
- W2912365769 sameAs 2912365769 @default.
- W2912365769 citedByCount "9" @default.
- W2912365769 countsByYear W29123657692020 @default.
- W2912365769 countsByYear W29123657692021 @default.
- W2912365769 countsByYear W29123657692022 @default.
- W2912365769 countsByYear W29123657692023 @default.
- W2912365769 crossrefType "journal-article" @default.
- W2912365769 hasAuthorship W2912365769A5007312438 @default.
- W2912365769 hasAuthorship W2912365769A5011877804 @default.
- W2912365769 hasAuthorship W2912365769A5021934581 @default.
- W2912365769 hasAuthorship W2912365769A5082252890 @default.
- W2912365769 hasAuthorship W2912365769A5083538605 @default.
- W2912365769 hasConcept C127313418 @default.
- W2912365769 hasConcept C13965031 @default.
- W2912365769 hasConcept C140327455 @default.
- W2912365769 hasConcept C159390177 @default.
- W2912365769 hasConcept C159750122 @default.
- W2912365769 hasConcept C178790620 @default.
- W2912365769 hasConcept C185592680 @default.
- W2912365769 hasConcept C191897082 @default.
- W2912365769 hasConcept C192562407 @default.
- W2912365769 hasConcept C2778199549 @default.
- W2912365769 hasConcept C2779256693 @default.
- W2912365769 hasConcept C504270822 @default.
- W2912365769 hasConcept C5166401 @default.
- W2912365769 hasConcept C518851703 @default.
- W2912365769 hasConcept C551831248 @default.
- W2912365769 hasConcept C90982505 @default.
- W2912365769 hasConceptScore W2912365769C127313418 @default.
- W2912365769 hasConceptScore W2912365769C13965031 @default.
- W2912365769 hasConceptScore W2912365769C140327455 @default.
- W2912365769 hasConceptScore W2912365769C159390177 @default.
- W2912365769 hasConceptScore W2912365769C159750122 @default.
- W2912365769 hasConceptScore W2912365769C178790620 @default.
- W2912365769 hasConceptScore W2912365769C185592680 @default.
- W2912365769 hasConceptScore W2912365769C191897082 @default.
- W2912365769 hasConceptScore W2912365769C192562407 @default.
- W2912365769 hasConceptScore W2912365769C2778199549 @default.
- W2912365769 hasConceptScore W2912365769C2779256693 @default.
- W2912365769 hasConceptScore W2912365769C504270822 @default.
- W2912365769 hasConceptScore W2912365769C5166401 @default.
- W2912365769 hasConceptScore W2912365769C518851703 @default.
- W2912365769 hasConceptScore W2912365769C551831248 @default.
- W2912365769 hasConceptScore W2912365769C90982505 @default.
- W2912365769 hasIssue "1" @default.
- W2912365769 hasLocation W29123657691 @default.
- W2912365769 hasOpenAccess W2912365769 @default.
- W2912365769 hasPrimaryLocation W29123657691 @default.
- W2912365769 hasRelatedWork W1531601525 @default.
- W2912365769 hasRelatedWork W2357640881 @default.
- W2912365769 hasRelatedWork W2359550025 @default.
- W2912365769 hasRelatedWork W2387446842 @default.
- W2912365769 hasRelatedWork W2948807893 @default.
- W2912365769 hasRelatedWork W3173606202 @default.
- W2912365769 hasRelatedWork W3183948672 @default.
- W2912365769 hasRelatedWork W1821349302 @default.
- W2912365769 hasRelatedWork W2778153218 @default.
- W2912365769 hasRelatedWork W3110381201 @default.
- W2912365769 hasVolume "116" @default.
- W2912365769 isParatext "false" @default.
- W2912365769 isRetracted "false" @default.
- W2912365769 magId "2912365769" @default.
- W2912365769 workType "article" @default.