Blogs
How much Gold can an iCON Gravity Concentrator Recover
How much gold you can recover depends much more on your ore mineralogy than on the iCON Gravity Concentrator itself. Gravity Recoverable Gold (GRG) A three stage Gravity Recoverable Gold test was conducted on a gold ore sample. From Stages 1 to 3, the sample was staged crushed/ground to 850µm K100 (20 mesh), 212µm K80 (70 mesh) and 75µm K80
Wood Crib Design & Mine Roof Support
Objective: To minimize support costs and to improve ground control by improving wood-crib design and utilisation through the development of engineering methods that will match the placement and performance of the wood cribs to the load conditions imposed by the mine environment. Background: While wood cribs are used extensively to stabilize mine openings, their utilization is often based on historical practice or
Recovering Cadmium & Tellurium from Scrap
Table of ContentsCdTe/CdS PV ScrapCdTe Wafer ScrapFerric Chloride LeachingHydrogen Peroxide LeachingOxygen-Pressure LeachingCdTe Leach Kinetics TestsLeaching Mixed CdTe-CdS PV ScrapFerric Chloride LeachingSolution PurificationCadmium RecoveryHydrogen Peroxide Leaching in H2SO4Oxygen-Pressure Leaching in H2SO4Leaching Kinetics of CdTeLeaching Kinetics of Mixed CdTe and CdS in PV ScrapLeaching Catalyzed by Soluble IronProduct RecoveryPrecipitating Tellurium from Leach Solution by pH AdjustmentCadmium Recovery Two materials critical to the
Méthodes pour Nettoyer les Concentrés d’or
Table of ContentsTable / BowlRégional de traitementCyanide lixiviationMercury FusionMise à niveau de l`écluse concentrés Les méthodes pour nettoyer votre concentrés: Le concentrateur gravimétrique un concentré qui exige le nettoyage final ou la mise à niveau. Les méthodes courantes comprennent: Table / Bowl Les tableaux et les boules ont été révélés très efficaces pour le nettoyage final. Ils sont lents mais très
How to Separate Heavy Rare Earth Elements
Table of ContentsUSBM ProcessEquilibrium TestsColumn TestsResults of Equilibrium Batch TestsResults of Column TestsMechanisms of Ree Elution from Sulfonic and Iminodiacetic ResinsSulfonic ResinIminodiacetic ResinEffects of VariablesRetaining IonResin TypeLoading ColumnSeparation ColumnColumn GeometryLoading ColumnSeparation ColumnNH4 Form ResinH Form ResinFlow RateLoading ColumnSeparation ColumnTemperatureEDTA ConcentrationpHRecycle of Mixed REESeparation of REE and EDTAHCl Precipitation of EDTAREE-Oxalate Precipitation and Roasting Potential increases in overall demand and purity
Concentrateur Gravimétrique
Table of ContentsConcentrateur KnelsonConcentrateur FalconConcentrateur Centrifuge d’OrFonctionnement du Concentrateur GravimétriqueComment I`iCON TravauxCapacité d’un Concentrateur GravimétriqueQ`attendre d’un Concentrateur Gravimétrique Concentrateur Knelson Cet appareil ameliore la separabilite des particules par gravimetrie en travaillant dans un champ centrifuge (60 fois G) plutot que dans le champ de la pesanteur. II comporte un bol de forme conique inversee muni de rainures dans sa parois interne (pour
Table a Secousses
Principe de fonctionnement de la Table a Secousses: Lorsqu’un film d’eau coule sur une surface plate inclinee, l’eau pres de la surface est retardee par la friction. La vitesse augmente vers la surface libre de l’eau. Si des particules de minerai sont introduites dans l’eau, les particules plus petites ne se deplacent pas aussi vite que celles plus grandes, puisqu’elles
ISL In-Situ Copper Leaching
Table of ContentsCopper Oxide OreMoisture Retention PropertiesMethodologyMercury PorosimetrySample and Petrographic DescriptionMercury Porosimetry TestingEstimation of Pressure Head and SaturationEstimating Hydraulic PropertiesMoisture Retention Curve EstimationEstimation of Fluid Permeability FunctionHysteresisComputer Modeling of Underground in Place LeachingMathematical ModelingFinite-Element Mesh and Flow Boundary ConditionsInverse ModelingForward ModelingHydrologic Design In researching ways to improve the recovery of minerals from in situ leaching operations. Such operations are amenable
Electrowinning Neodymium – Electrolytic
Table of ContentsMaterials and EquipmentExperimental ProceduresPreparation of Cathode AlloysCell OperationDistillation A rapidly expanding market for Nd-Fe-B permanent magnets has created intense interest in development of a new process for producing neodymium metal. The current industrial process is calciothermic reduction of neodymium fluoride (NdF3), which entails reacting calcium metal with NdF3 at 1,200° to 1,400° C in closed tantalum crucibles. The
Effect of Nonionic Surfactants on Chalcopyrite Leaching
Duncan, Trussell, and Walden reported the effect of nonionic surfactants on the Thiobacillus ferrooxidan leaching of chalcopyrite. The tests were conducted in 250-mL Erlenmeyer flasks containing minus 325 mesh chalcopyrite and a modified 9K medium at pH 2.5 and 35° C. The hypothesis tested in adding the surfactants was that the presence of a surfactant would allow the bacteria to
Effect of Chalcopyrite Leaching Additives
Table of ContentsChlorideMaterials and Procedures Previous U.S. Bureau of Mines (USBM) research on the leaching of chalcopyrite with ferric sulfate [Fe2(SO4)3] demonstrates that surfactant additions enhance chalcopyrite (CuFeS2) leaching and that surfactant selection has a significant impact on the initial leaching rate. Additions of chloride ion (Cl-) are also known to enhance chalcopyrite leaching, although a review of the literature
Recovery of Mercury from Electrical Wastes
Table of ContentsStatus of Current TechnologyCharacterizationTest 1Test 2Test 3Test 4Test 5Test 6Test 7Test 8Mercury-Vapor SorptionThermal DesorptionLaboratory Thermal-Desorption TestsRotary-Kiln Thermal-Desorption TestsMercury-Vapor Recovery and Environmental Control As part of its mission to reduce the environmental impact of minerals processing, the U.S. Bureau of Mines (USBM) investigated the characterization and treatment of Hg-contaminated wastes from an electrical-parts manufacturing plant. A literature search showed
HCl Hydrochloric Leaching of Manganese Silicate Ore
Table of ContentsProcedures and EquipmentResults and DiscussionHCl-CaF2 LeachingCountercurrent LeachingManganese RecoveryProcess Flowsheet An estimated 17 million mt of manganese are contained in domestic manganese-bearing silicate resources, yet domestic production is insignificant compared with the quantity of manganese imported yearly into this country for consumption. The projected U.S. consumption of manganese in 1990 was expected to be about 680,400 mt with the
Borate Fusion Sample Preparation Instrument Gas Fluxer
Table of ContentsBuilt-in safety cabinetSturdy mechanical systemsFusion temperature measurementHuge built-in touchscreenConnectivityAdvanced self-monitoringDedicated mold heatingDirect XRF analysis without any contact!Can we always measure directly?How do we get a sample?From sample to specimenRequirements for a prepared XRF SampleThe advantage of XRF analysis: easy, fast sample preparationWhile we wait for the resultsDefinition of Terms Accuracy and PrecisionPrecision:Accuracy:Definition of Terms QuantificationDefinition of Terms Analyzed
Electric Arc Furnace Steelmaking using Scrap
Table of ContentsScrap PreheatingSubstitute Slag ConditionersExperimental Equipment and ProcedureFerrous ScrapSlag FluidizersEquipmentProceduresElectric Arc Furnace TestsFurnace Offgas and Particulate SamplingSample Train PreparationSample CollectionResultsContinuously Charged Preheated ScrapContinuously Charged Cold ScrapScrap Backcharging TestsSlag ConditionersDiscussion of Results This investigation is part of the Bureau of Mines program to develop technology that emphasizes the reuse of recycled, economically important materials, including iron and steel scrap. In
Laboratory Test Sieves
Table of ContentsPrecision Test Sieve FeaturesEuropean and American Screen Aperture Sizes 911MPE is a proud supplier of a Top Brand of laboratory particle size analysis equipment. Select from any of the ISO Certified screen opening sizes below. Precision Test Sieve Features We offer qualitative advantages compared with other manufacturers in each detail. It is profitable to compare the details.Multiple advantages due to
Double-Deck Gold Shaker Table
Table of ContentsDuplex ConcentratorGold Shaker Table Working Principle The 911MPEGMS-2DST double deck “DUPLEX” gold shaker table is effectively 2 super-imposed 4′ x 8′ decks and processes 2 tons per hour of -200 minus to 4 tons or more of sand size material. This provides you with 64 square feet of tabling area. The same gold recovery area a 12′ X
Long Sluice Box
This Oscillating gold highbanker sluice box is perfect for fine gold recovery in small operation. With a capability of processing up to 4 TPH, the 911MPE2MS takes high banking to the next level in time and recovery. It is dressed like a highbanker but works as a wash plant / Oscillating sluicebox hybrid for fine gold recovery. The highbanker is really
Gold Concentrate Cleaning Spiral
Table of ContentsSetting up your Pro Camel-24Setting up stand and drive unitMounting the wheelPreparing spraybar and pumpIntroduction to the Pro Camel- 24 operationBeginning OperationPump Care and MaintenanceIntroductionOther Information about the Pro-Camel 24Warranty Information PRO-CAMEL 24 Automatic Panning Machine The Pro-Camel 24 is the largest 12 volt panning machine manufactured anywhere. It is a fast, high capacity machine capable of processing
Counterbalanced Pressure Filter
The Counter-Balanced Laboratory Pressure Filter is designed to handle bucket samples of mill pulps. Due to the counter-balanced mechanism, it can be operated as easily and quickly as the smaller sizes. While the filter is being filled, the cover is held back by the weight of the counter-balance. During filtering, the yoke holds the filter medium tightly in place, forming a complete
Small Gold Smelting Furnace
An electronics recycler’s favorite, the RapidFire Pro-L offers the ultimate combination of portability, function, and performance demanded by professional artists, at a fraction of the cost of comparative products. The RapidFire L is the ideal solution for jewelry, metal clay, and ceramic firing and comes complete with a digital control panel, embedded heating element, 6″ x 5″ x 6″ firing
Small Laboratory Flotation Machine
The automatic froth remover is only one of the great characteristics this solidly built and very economic digitally controlled variable speed (0-2780 RPM) laboratory flotation machine is made to order. You select the one (1) acrylic tank volume you want: 0.5 L 1 L 1.5 L 3 L 8 L The float machine will come with a fixed-in-position flotation mechanism
XRF Pellet Press
Table of ContentsDecreased cost of consumablesIncreased ProductivityAccurate dataImproved AnalyticsTransportableIn-field GeoanalysisStandard or Premium Puck The dies can be identified by removing the cap and observing the die body. The standard die will have a smooth cylinder, where the premium die will have a cutout for the accommodation of a plastic ring. Remove the ring from the die and extend the die
Jewellery Testing XRF Machine
Table of ContentsDescriptionXRF FOR NON-DESTRUCTIVE PRECIOUS METALS ANALYSISGET FAST, ACCURATE ANALYSIS RESULTS WITH THE OLYMPUS GOLDXPERTRELIABLE AND EASY TO USEGoldXpert XRF BenefitsApplicationsFeaturesGOLDXPERT SAMPLE HOLDERIN FOCUS AND ON TARGET FOR EVERY SHOTCamera and CollimatorCustomized ReportingExclusive Plate Alert FeaturePERFORMANCE YOU CAN COUNT ONGOLDXPERT ACCURACY FOR AU AND PD IN ASSAYED DENTAL ALLOYSREPEATABILITY PLOTOLYMPUS GOLDXPERT RELIABLE AND EASY TO USEGOLDXPERTSTANDARD ACCESSORIES Precious Metal