FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2125004890> ?p ?o ?g. }

• W2125004890 endingPage "212" @default.
• W2125004890 startingPage "200" @default.
• W2125004890 abstract "The presence of calcium (Ca) and magnesium (Mg) in the hydrometallurgical processing of base metals results in a number of difficulties. These problems range from the contamination of the final product, to high energy consumption and large bleed streams during electrowinning. Calcium poses a greater problem in sulphate solutions due to the low solubility of its sulphate salts. In the first part of this study, fluoride precipitation of calcium and magnesium is considered for investigation, using a batch precipitation reactor. The batch precipitation reaction investigated the effects of the quantity of fluoride, molar ratio of Ca to Mg, identity of the soluble fluoride and temperature. The possibility of controlling Ca and Mg through the precipitation of their respective fluorides, without the co-precipitation of nickel and cobalt was shown. At Mg to Ca molar ratio above 3, the precipitation of Mg dominated over that of Ca due to the former’s high concentration in the reaction vessel and therefore, its high activity. For a 10% stoichiometric excess amount of fluoride, 96.5% Ca and 98.5% Mg were removed. When the identity of soluble fluoride was considered, results demonstrated that NH4F solution caused a higher Ca and Mg precipitation compared with HF. This was found to be due to the high stability of the HF complex in solution when using HF as the fluoride source, resulting in a lower free fluoride activity in the solution. For the range investigated (45–65 °C) temperature was found to have a negligible effect on the precipitation of the alkaline earth metals. The supersaturation ratio for CaF2 was 73 and 27 for MgF2 and it was found that while primary nucleation did not dominate, it could not be ruled out completely. A conceptual process is proposed whereby only a portion of the leach stream is subjected to the fluoride precipitation process, after which it is returned to lower the overall Ca and Mg concentrations. This method is expected to reduce the effect of the observed dominance of Mg precipitation in processes not requiring the maximum removal of both Ca and Mg. This study proposes the integration into the production line of a hydrometallurgical industry the three main steps of fluoride precipitation process and recovery; precipitation, solid–liquid separation and adsorption–desorption cycle of the unreacted fluoride." @default.
• W2125004890 created "2016-06-24" @default.
• W2125004890 creator A5005312748 @default.
• W2125004890 creator A5007677108 @default.
• W2125004890 creator A5014910601 @default.
• W2125004890 creator A5017184720 @default.
• W2125004890 creator A5024912807 @default.
• W2125004890 creator A5056974217 @default.
• W2125004890 date "2008-02-01" @default.
• W2125004890 modified "2023-09-27" @default.
• W2125004890 title "Fluoride based control of Ca and Mg concentrations in high ionic strength base metal sulphate solutions in hydrometallurgical circuits" @default.
• W2125004890 cites W1969637035 @default.
• W2125004890 cites W1982037944 @default.
• W2125004890 cites W1986675356 @default.
• W2125004890 cites W2016831888 @default.
• W2125004890 cites W2051495143 @default.
• W2125004890 cites W2056365651 @default.
• W2125004890 cites W2073013865 @default.
• W2125004890 cites W2122766477 @default.
• W2125004890 cites W2126958251 @default.
• W2125004890 cites W2160362571 @default.
• W2125004890 doi "https://doi.org/10.1016/j.mineng.2007.09.010" @default.
• W2125004890 hasPublicationYear "2008" @default.
• W2125004890 type Work @default.
• W2125004890 sameAs 2125004890 @default.
• W2125004890 citedByCount "8" @default.
• W2125004890 countsByYear W21250048902013 @default.
• W2125004890 countsByYear W21250048902015 @default.
• W2125004890 countsByYear W21250048902018 @default.
• W2125004890 countsByYear W21250048902021 @default.
• W2125004890 countsByYear W21250048902022 @default.
• W2125004890 crossrefType "journal-article" @default.
• W2125004890 hasAuthorship W2125004890A5005312748 @default.
• W2125004890 hasAuthorship W2125004890A5007677108 @default.
• W2125004890 hasAuthorship W2125004890A5014910601 @default.
• W2125004890 hasAuthorship W2125004890A5017184720 @default.
• W2125004890 hasAuthorship W2125004890A5024912807 @default.
• W2125004890 hasAuthorship W2125004890A5056974217 @default.
• W2125004890 hasConcept C107054158 @default.
• W2125004890 hasConcept C121332964 @default.
• W2125004890 hasConcept C13965031 @default.
• W2125004890 hasConcept C144082473 @default.
• W2125004890 hasConcept C147789679 @default.
• W2125004890 hasConcept C153294291 @default.
• W2125004890 hasConcept C155574463 @default.
• W2125004890 hasConcept C17525397 @default.
• W2125004890 hasConcept C178790620 @default.
• W2125004890 hasConcept C179104552 @default.
• W2125004890 hasConcept C185592680 @default.
• W2125004890 hasConcept C2780828025 @default.
• W2125004890 hasConcept C519063684 @default.
• W2125004890 hasConcept C543218039 @default.
• W2125004890 hasConcept C56566620 @default.
• W2125004890 hasConcept C68047255 @default.
• W2125004890 hasConcept C68801617 @default.
• W2125004890 hasConceptScore W2125004890C107054158 @default.
• W2125004890 hasConceptScore W2125004890C121332964 @default.
• W2125004890 hasConceptScore W2125004890C13965031 @default.
• W2125004890 hasConceptScore W2125004890C144082473 @default.
• W2125004890 hasConceptScore W2125004890C147789679 @default.
• W2125004890 hasConceptScore W2125004890C153294291 @default.
• W2125004890 hasConceptScore W2125004890C155574463 @default.
• W2125004890 hasConceptScore W2125004890C17525397 @default.
• W2125004890 hasConceptScore W2125004890C178790620 @default.
• W2125004890 hasConceptScore W2125004890C179104552 @default.
• W2125004890 hasConceptScore W2125004890C185592680 @default.
• W2125004890 hasConceptScore W2125004890C2780828025 @default.
• W2125004890 hasConceptScore W2125004890C519063684 @default.
• W2125004890 hasConceptScore W2125004890C543218039 @default.
• W2125004890 hasConceptScore W2125004890C56566620 @default.
• W2125004890 hasConceptScore W2125004890C68047255 @default.
• W2125004890 hasConceptScore W2125004890C68801617 @default.
• W2125004890 hasIssue "3" @default.
• W2125004890 hasLocation W21250048901 @default.
• W2125004890 hasOpenAccess W2125004890 @default.
• W2125004890 hasPrimaryLocation W21250048901 @default.
• W2125004890 hasRelatedWork W1986876083 @default.
• W2125004890 hasRelatedWork W2000799110 @default.
• W2125004890 hasRelatedWork W2002352341 @default.
• W2125004890 hasRelatedWork W2015389760 @default.
• W2125004890 hasRelatedWork W2048465807 @default.
• W2125004890 hasRelatedWork W2070588615 @default.
• W2125004890 hasRelatedWork W2085850082 @default.
• W2125004890 hasRelatedWork W2417873542 @default.
• W2125004890 hasRelatedWork W4305072809 @default.
• W2125004890 hasRelatedWork W2073686981 @default.
• W2125004890 hasVolume "21" @default.
• W2125004890 isParatext "false" @default.
• W2125004890 isRetracted "false" @default.
• W2125004890 magId "2125004890" @default.
• W2125004890 workType "article" @default.