浓密机-艾法史密斯试验报告(F-LSmidth)

SongjiangCopperProjectPasteThickeningTestworkReportDate:12July2013Page1SEDIMENTATIONTESTWORKREPORTFORPASTETHICKENINGOFTHEFLOTATIONTAILINGSOFSONGJIANGCOPPERGROUP哈尔滨松江铜业深锥膏体浓密机试验报告Submittedby:FLSmidth艾法史密斯中国12July10,20132013年7月12日SongjiangCopperProjectPasteThickeningTestworkReportDate:12July2013Page2PROPRIETARYANDCONFIDENTIALINFORMATION专有和机密信息Theattacheddocumentcontainsproprietaryandconfidentialinformationandissubmittedunderaconfidentialrelationship.所附文件包含专有和机密信息，并提交下一个保密的关系。Byacceptingthisdocument,therecipientagrees:接受这份文件，收件人应同意如下内容：(a)Nottodisclosetothirdpartiesoruseanydrawings,specifications,designs,processesorinformationsuppliedbyFLSmidthinanymannerdetrimentaltotheinterestsofFLSmidth.不向第三方披露或使用由艾法史密斯提供的任何图纸，规格，设计，工艺或信息以任何方式损害艾法史密斯的利益。(b)AnyspecialfeaturespeculiartothisdesignandinformationgainedasaresultofthisdocumentshallbetreatedasconfidentialandshallbethepropertyofFLSmidthandwillnotbeincorporatedinwholeorinpartinotherprojectsunlessrecipientobtainswrittenpermissionfromFLSmidthtodoso.本文件中涉及到的特殊设计和信息，应视为机密，并应为艾法史密斯所有，将不会转入在其他项目中的全部或部分，除非接受者获得的书面许可，艾法史密斯才会给与授权。(c)Nottocopyinwholeorinpartnorrevealitscontentsinanymannerorforanyotherpurposeexceptforthepurposestatedherein.不属于全部或部分地复制本文件内容用于除本项目外的其他目的。(d)Theforegoingapplies,withoutlimitation,toalldocumentspreparedbyFLSmidthinconnectionwiththissubmissionandtherecipientacknowledgesthisdocumentinvolvesconfidential,proprietaryrightsofFLSmidthandalldesign,manufacturing,reproduction,useandsalerightsregardingsameareexpresslyreserved.上述内容适用但不限于，艾法史密斯提交的所有文件，接收方同时也要不透露本文件涉及机密，艾法史密斯明确保留所属的权利和所有的设计，制造，复制，使用和销售权。SongjiangCopperProjectPasteThickeningTestworkReportDate:12July2013Page3CONTENTS目录1.0SUMMARY概要2.0INTRODUCTION介绍3.0TESTWORK试验4.0CONCLUSIONS结论SongjiangCopperProjectPasteThickeningTestworkReportDate:12July2013Page41.0SUMMARY概要TheflotationtailingofSongjiangCopperGroupwillbeusedforminepastebackfill.Thebackfillprocesswillrequirehighconcentrationpastetailings.Adeepconepastethickenerisproposed.Initiallythesamplewascharacterized,andflocculantscreeningandsettlingtestswerecarriedout.InadditiontothetestsrequiredforaHi-RateThickener,rheologytestswerecarriedoutontheflocculatedsludgetodeterminetheultimatesolids.哈尔滨松江铜业集团松江钼业公司浮选尾矿将用于矿山膏体充填。充填工艺需要高浓度膏体尾矿。推荐采用深锥膏体浓密机。根据来样的物料特性，进行了絮凝剂的筛选和沉降试验。除了进行一些浓缩试验外，还进行流变测试工作，以便确定最终推荐的深锥膏体浓密机型号。BasedonthesamplereceivedinourlaboratorythefollowingpredictionscanbemadeforHi-RateandDeepConeThickening;根据实验室收到的矿样，做出如下预测，进行高效浓密试验和深锥浓密试验。Hi-RateThickener高效浓密机60%w/wDeepConeThickener深锥膏体浓密机60%w/wFlocculantconsumptionfortheDeepConeThickeneratapproximately31-35g/t.深锥浓密机试验得出絮凝剂的用量大概为31-35克/吨。Thebasicparametersprovidedbytheowner业主提供的基本参数如下：Throughput生产能力1000tonnesperday(drysolids)Feedsolidsconcentration给料浓度20-25%w/wUnderflowsolidsconcentration底流浓度≥72%w/w（膏体）TargetOverflowClarity溢流水澄清度200ppmParticleSize固体粒度-200mesh65-70%SolidSG比重3.23g/cm3SongjiangCopperProjectPasteThickeningTestworkReportDate:12July2013Page52.0INTRODUCTION介绍2.1Background背景FLSmidtharespecialistsinthedesignandmanufactureofthickenersanddriveheads.Wehavesuppliedsomeoftheworld’slargestthickenersandhavebeenresponsiblefortheintroductionofmanyfeaturestothesedimentationmarket,manyofwhicharenowacceptedasstandardsintheindustry.艾法史密斯是设计和制造浓密机和驱动装置的专家。我们已经提供了一些世界上最大的浓密机，在矿物沉降浓缩方面引进了许多特色技术，并被定义为行业标准。FLSmidthbeganworkonthedevelopmentofthehigh-densitythickenerinthe1970’s.Demandforhigh-densitythickenerscamefromaneedtopreservewaterbyrecyclingasmuchaspossiblefromthethickeneroverflow,ratherthantryingtoreclaimwaterfromtailingsimpoundment.艾法史密斯于1970年开始发展高浓度浓密的工作。设计的原则和理念是尽可能多的通过浓密机提高底流浓度，从而从溢流回收多的水，而不是试图从尾矿库水回收水。2.2Testwork试验Thetestworkthatiscarriedoutforapastethickeningapplicationstartswiththesametestsasforaconventionalthickener;深锥膏体浓密机的试验程序用程序与传统浓密试验相同：Initially,thesampleischaracterized.首先是矿样特性。Flocculantscreening.Aseriesofsettlingtestsarecarriedouttofindasuitableflocculantwhichgivesrapidsettlingandgoodoverflowclarityatlowdoses.絮凝剂筛选。开展一系列的沉降试验，找到一个合适的絮凝剂，在快速稳定的情况下得到澄清的溢流水。Aseriesoftestsarethencarriedacrossarangeofflocculantdosesandfeedsolidsconcentrationstodeterminethefeedsolidsconcentrationwhichwillachievethemaximumsettlingflux.SongjiangCopperProjectPasteThickeningTestworkReportDate:12July2013Page6进行的一系列测试，在絮凝剂添加量范围内进行，根据絮凝剂剂量和给料浓度，确定絮凝最佳的矿浆固体浓度。Oncetheoptimumfeedsolidsconcentrationandflocculantdosehavebeenestablished,jarsettlingtestsarecarriedouttodeterminethesettlingfluxforarangeofunderflowdensities.确定最佳给矿浓度和絮凝剂添加量后，进行一系列试验，以确定稳定的底流度。2.3EffectofFeedSolidsConcentration给料浓度的影响Thesettlingflux(andthereforethesurfaceareaofthickenerrequired)varieswiththesolidsconcentration.Figure1showsatypicalsettlingfluxcurveforarangeofsolidsconcentrations.如图所示，给矿浓度与絮凝剂添加量、沉降量的关系。FeedSolidsConcentration,wt%给矿浓度Figure1.EffectofFeedSolidsConcentration表1给料浓度影响曲线图Ascanbeseenfromthisgraph,theunitareaofthethickenerrequiredandtheflocculantconsumptionincreaseasthethickenerfeedsolidsconcentrationincreases.从该曲线图中可以看出，浓密机单位面积所需的絮凝剂的消耗量会随着给料浓度的增加而增加。Thereasonsforthisareasfollows;modernlongchainpolymerflocculantsaremuchmoreeffectivethantheirpr