Table of ContentsCell Design and OperationElectrowinning NeodymiumElectrowinning PraseodymiumElectrowinning Didymium Electrowinning Rare Earth Elements like Neodymium, praseodymium, and didymium, were (obviously) electrowon from their oxides dissolved
Table of ContentsElectrolytic CellOperationPreliminary InvestigationsNaCl-VCl2 ElectrolyteLiCl-NaCl-VCl2 ElectrolyteBaCl2-KCl-NaCl-VCl2 and KCl-LiCl-VCl2 ElectrolytesLaboratory-Scale Production TestsElectrorefining in a KCl-LiCl-VCl2 ElectrolyteElectrorefining in a CaCl3-NaCl-VCl2 Electrolyte A molten salt, inert-atmosphere electrorefining
Table of ContentsGallery TestsVentilating ConditionsIgnition SourcesPreliminary TestsMine TestsFire FightingResultsBelt IgnitionFlame PropagationExtinguishing Conveyor Belt Fires This investigation showed that neoprene, polyvinyl chloride, and rubber belts ignite
Table of ContentsTheoretical ConsiderationsSintering ExperimentsEquipment and MaterialsProcedureResultsDiscussionSmelting and Refining InvestigationsSmelting Equipment System and MaterialsProcedureResults of Water-Cooled, Condenser TestsResults of Molten-Metal, Splash-Condenser TestsSpecial Smelting InvestigationConventional Zinc
Table of ContentsStatistical Techniques used for the InvestigationMean-Square-Successive-Difference TestCorrelationSource of Assay Data TestedClimax Molybdenum DepositMean-Square-Successive-Difference TestsCorrelationCebolla Greek Titaniferous Iron DepositMean-Square-Successive-Difference TestsCorrelationSan Manuel Copper DepositMean-Square-Successive-Difference TestsCorrelationDiamond-drill
Table of ContentsExperimental Procedures and ResultsDirect Hydrolysis of H2SiF6Hydrolysis of Lime-Neutralized H2SiF6 This report describes a preliminary investigation of methods for recovering hydrofluoric acid (HF)
Table of ContentsMaterials, Equipment, and ProcedurePrecipitation of Calcium Vanadate from Synthetic SolutionsPrecipitation With Calcium ChlorideEffect of pH on Precipitate CompositionEffect of pH and the Quantity
Table of ContentsElectrolysis of Fused Sodium Cyanide ElectrolytesCoatings of Pure IridiumAlloy Coatings of Iridium With Other Platinum-Group MetalsElectrolysis of Aqueous ElectrolytesEvaluation Adherent, coherent electro-deposits of
Table of ContentsPrevious Studies of Magnetic Separation of Pyrite from CoalsPublished WorkUnpublished Studies by the Bureau of MinesPresent Studies of Magnetic Separation of Pyrite from
Table of ContentsRaw MaterialsEquipment and ProcedureResultsNonpyritic Smelting With Normal SulfurNonpyritic Smelting With Excess SulfurNonpyritic Smelting With Deficient SulfurDiscussion of ResultsGypsum as a Pyrite Substitute A
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