I am sure we are indebted to Prof. Hayward for his addition to our knowledge of the influence of sulphur on steel. As he has
Table of ContentsCompressionSpeed and AccuracyTransmissionSpeed and Accuracypv = p’v’ The four nomograms presented in this method were designed to simplify and make more, rapid the calculations
Table of ContentsPreliminary Tests by Mr. CroasdaleAntisell ProcessProcess of Pope and HahnGreenway ProcessFinal ACID Leaching ProcessImportant ACID LEACHING Factors ExtractionAcid ConsumptionPower Consumption for ElectrolysisControl of Ferric IronSulphur ConsumptionFouling of
Table of ContentsLeaching Plant FeedCumulative PercentConveying and Storage EquipmentUnloading PitStorage BinsRoasting EquipmentLeaching Plant EquipmentPrecipitating DivisionDetails of OperationRoastingLeachingPrecipitatingResultsDiscussion A 2,000-ton Copper Leaching plant for the treatment of
Table of ContentsShaft SinkingWinding Engines and EquipmentPumping Facilities at Main ShaftsCommunication between Surface and UndergroundVentilationGeneralUnderground Development and Extraction LevelsRisesTrucksMethods of StopingOpen Stoping with BulkheadsRill StopesTransportation
Table of ContentsCopper GeologyGenesis of Porphyry OreUnderground Mining-Auxiliary to Steam-Shovel OperationsShrinkage Stoping System AdoptedOrebody Worked on Three LevelsMain or Motor-Haulage LevelManway Raises and DriftsStoping OperationsUpper LevelsStope
Table of ContentsEquipment RequiredMethod of Making DeterminationsCalibration of the Apparatus using Samples of Known Melting PointsResults Obtained with Tungsten-Molybdenum AlloysMicroscopic Examination of Tungsten and Molybdenum
Table of ContentsSampling MethodsVariations in AssaysConstruction of DiagramsDiscussion of Bullion Assay Curve DataSummaryDiscussion Several years ago the writer was connected with the Mint and Assay
Table of ContentsMineralogyGround MassIntroduced MetallicsSampling & Preparing Ore for TreatmentChemical AnalysisTreatment of OreOxidizing RoastLeaching with Dilute Sulphuric AcidElectrolytic PrecipitationElectrolytic PlantNo. 1 Step.No. 2 Step.Kinds of AnodesDepolarizing
The surfaces of native or free gold containing particles are normally hydrophobic and, if the surfaces of such particles are relatively free of contaminants they