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Red Mud Filtration Test Resultsusing AFP IVIV Automatic Filter PressPrepared for ICSOBOBauxite Residue ConferenceBy Manfred BachFLSmidthGoa, IndiaOctober 17th, 2011Presented by:Quentin D. AveryGlobal Sr. Product Manager,Filter Press TechnologiesFLSmidth – (Formally Dorr-Oliver Eimco)The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
Red Mud Testingg - OverviewThis ppaperp ppresents the testingg & results for a series of ppilotstudies run on red mud residue. Alumina refineries are seeking solutions for lower moisturecontent filter cakes to reduce volumes of residue in redmud disposal sites.- Pressure Filters can produce very driest of cakes- Filter Presses offer efficient Cake Washingfor Caustic Recovery- Fully Automatic Operation is offeredTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 20112
FLSmidth Pressure Filter Types- Filter Presses: Shriver & AFP IV Horizontal Types Manual Semi-AutomaticSemi Automatic Fully AutomaticAutomatic (Shriver) Indexing Type Shifting 100 bar Cloth Wash Shaker AvailableA tAutomaticti (AFP IV ) Quick Cycling Positive Discharge Fully UnattendedOperationSizes to over 1,000 mm²Photos: FLSmidth Salt Lake CityTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 20113
Feasibility Study Objectives2002 – 2003 StudyyThe clients objective of the testing: Process the material to produce a cake that would be friable andtransportable by truck or conveyorNote: Some cases require Produce a cake of 70-75 wt % Solidslower moisture content cakesEvaluate the following variables:th t may bethatb achievedhiddepending on ore type1. Bauxite Ore Variations2.33.4.5.Feed Pressure/Feed RatePl t TPlateType, RRecessedd vs. MMembranebFeed ConcentrationAir Blowing of the filter cake(Due to confidentiality the individual bauxite grades are not disclosed in this paper)FLSmidth’s extensive experience w/minerals processing applicationsenablesbl us tot performflabl b & pilotil t testes,t tsuccessfullyf ll scalel up anddexecute these projects for clients around the globeTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 20114
Test ProceduresTesting was performed using an FLS-EimcoModel 470FB470FB-225225 filter pressNominal Filter SpecificationsMaximum Operatingpg Pressure:Filtration 7 BarSqueezing 15 Bar470mm x 470 mm platesTwo (2) chamber plate stackChamber Thickness: 25-50mm25 50mmFilter Area: .53 m2Cake Volume 9.3 dm3(Before Squeeze)TitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 20115
Lab and Pilot TestingBench-Scale and/or Pilot Testing are used toDetermine material filtration characteristicsFor equipment proper selection and sizing.The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.6Rev1.0, Jan14,2009
Test ProceduresTypical Batch Filter Operation Steps Fillingg to Fullyy Vent the Filter Filtration and Initial Cake Formation Pressure Controlled Pumping of Slurry to Filter Pre-Squeezing to Produce Homogenous Cakes for Cake Washing Cake Washing for Caustic recovery Final Squeeze to Produce High Solids Cake Air Blow & Core Blow to Remove Residual Liquid Cake RemovalTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 20117
Typical Operation Steps Cake Consolidation w/Membranes/CakeConsolidationMembrane Plates;filter cake isconsolidatedby using thecompressivefforcesappliedli dto flexiblediaphragms.With standardRecessed ChamberPlates; cake isconsolidated byy slurryyfeed pumping pressurealoneTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 20118
FLSmidth Membrane Filter PressOperation w/ Cake WashingPath of wash liquor through filter cakeTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 20119
Pilot Filter Results –Excellent Dry Cake DischargeTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201110
Filtration Times - Specific Test ResultsTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201111
Filtration Rate – Specific Test ResultsTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201112
Comparative Test ResultsPilot Testresults onvarious oregradesTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201113
Filtration Rate – Specific Test ResultsTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201114
Ultra Highg Pressure Squeezingqg–Specific Test ResultsFLSmidthperformedtest usingexperimentalultra highmembranesqueezepressures upto 60 barTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201115
Conclusions and Recommendationsfrom Specific Test ResultsFor each case, FLSmidth recommends Lab and/or Pilot Tests Filtration steps and cycles times may vary considerably Depending on material, 80% cake solids may be achievable Cake washing efficiency can be studied if applicableTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201116
FLSmidth Pilot Study – “Other” Red MudSqueeze & Air Blow - Impact on Cake MoistureTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201117
For High-Volume Production - AFP IV Large-Scale Filters with 2M x 2M PlatesFast Cycling AFP IV Filter;Fast open,open discharge,discharge close mechanical timeto maximize production throughputLow-PressureFlood WashingTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201118
FLSmidth AFP IV Automatic Filter PressFully Unattended Cake DischargeTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201119
For High-Volume ProductionLarge-ScalegFilters with 2M x 2M PlatesHigh-Pressure Indexing100 bar cloth wash pressureTitleThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.7 November 201120
Fully Automatic Pressure FiltersFilter Presses for red mud and bauxite.Automatic pressure filters offer significantadvantages over conventional red muddisposal methods for many refineries.QuentinQti D.D AveryAGlobal Sr Product ManagerFilter Press TechnologiesDirect:Dit 11 201 666666-23002300Mobile: 1 201 214-2602Email:quentin.avery@flsmidth.comti@fl idthFLSmidth Salt Lake City7158 S. FLSmidth DriveMidvale, UT 84047-5559· USATel 1 801 871-7000The information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
THANK YOU!For answers to your questions, please contact:Manfredf d BachhSales Manager - AluminaDirect 49 6123 975-310 · Mobile 49 1733 144 267 ·Fax 49 6123 975-303975 303manfred.bach@flsmidth.comThe information contained or referenced in this presentation is confidential and proprietary to FLSmidth and is protected by copyright or trade secret laws.
Filter Presses for red mud and bauxite. Automatic pressure filters offer significant Quentin D. Avery Global Sr Product Manager Filter Press Technologies Di t 1
