Present flotation processes depend almost entirely on the buoyant properties of air bubbles to effect separations of mineral and gangue, but there is no convenient
Table of ContentsHistoryLocation and AccessibilityPhysical Features and ClimateDrillingLaboratory Procedure at Spokane, Wash.Laboratory Procedure at Albany, Oreg.Description of DepositSize of DepositGeneral GeologyMineralogyAnalytical Results This report describes
Table of ContentsExperimentalSample PreparationThe MethodAccuracy and Reproducibility The main source of beryllium in pegmatite is the mineral, beryl. Many of the conventional methods for the
Table of ContentsConcentrationThe OrePhysical CharacterChemical CharacterProcedureResultsExtraction of Mercury from Cinnabar-Stibnite ConcentratePreliminary Roasting TestsTemperatureRetention TimeSpace RateGas CompositionAddition of Air to Exit GasesCondenser ProductsCondenser LossesContinuous-Roasting TestResults and
This paper discusses the design and use of the ferric chloride trap. The operation is simple and self-adjusting. The rock-salt column is self-cleaning and will
Table of ContentsExploration and Estimation of ReservesDevelopment and MiningGeneralRemoval of OverburdenPrimary Drilling and BlastingSecondary BreakageQuarry Loading and TransportationProcessingGeneralPrimary CrushingSecondary Crushing, Screening, and StorageBlending and LoadingMaintenance
Table of ContentsPhysicalChemicalConcentrationFlotationDistillationSummaryPhysicalChemicalConcentrationPhysicalChemicalConcentrationSummaryNature of OrePhysicalChemicalConcentrationNature of OrePhysicalChemicalConcentrationNature of OrePhysicalChemicalConcentrationDense MediumFlotationConclusions Most mercury ores are directly roasted or retorted for recovery of metallic mercury without preliminary
Table of ContentsPreparation of a Rock Slice for MountingPreparation of Friable and Altered Hocks for MountingPreparation of the Glass Slide for MountingMounting Rock Slice on
Table of ContentsProduction Methods For Chromium MetalCarbon Reduction of Chromium OxideChromium by Dissociation of Chromium NitrideFusion ElectrolysisChromium from AmalgamDissociation of Chromium IodideChromium Oxide Reduction with
Table of ContentsCutting Rocks in the Quarry (2)Cutting and Finishing Stone in MillsLimestone (4)Marble (2)Sandstone (2)Granite (5)Slate (3)Cutting and Polishing Gems and Semiprecious StonesMaterials Used
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