Dipper Dredge

Table of ContentsSuction Pump DredgesThe Grabs or Clam Shell DredgeThe Bucket DredgeClassification of Bucket Dredges In its primitive form, the dipper dredge consists of a

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Zinc Electrowinning from Chloride Electrolyte

Table of ContentsElectrolysis CellElectrolyte and AdditivesTest ProcedureElectrolysis ConditionsDeposit ExaminationCurrent Efficiency and Energy RequirementStandard Electrolysis ConditionsEffect of HCl ConcentrationEffect of Zinc Concentration Chemical and electrochemical leaching

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Laboratory Regrind Mill

A laboratory stirred ball mill was used in a batch manner, with the milling time being varied so as to produce a number of different product size

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Dredging Method

I desire to call the attention of the Institute to a novel system of dredging, which, it seems to me, may prove applicable, not only

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Solvent Extraction of Cobalt SX

Table of ContentsExperimental TechniquesExperimental ResultsSolvent CompositionExtractionWater-Ammonium Sulfate WashingpH-Controlled WashStrippingKineticsPhase SeparationContinuous Circuit OperationConclusions The United States produces essentially none of the cobalt and less than 10

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Scrap Silver Recovery

Table of ContentsDescription of Materials and EquipmentHoneycomb PanelsElectrolytic CellsPower SuppliesPreelectrolysis Preparation of Honeycomb PanelsShredding of Honeycomb PanelsSampling Honeycomb for AnalysisExperimental Procedures and ResultsSmall Rectangular CellLarge

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