闪锌矿中铁含量对浮选的影响-毕业论文外文翻译

《闪锌矿中铁含量对浮选的影响-毕业论文外文翻译》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、Effectofiron〉contentinsphaleriteonflotationAbstractTheeffectofsubstitutedinthe◄mineral>lattice,onthefrothflotationofsphaleritehasbeeninvestigatedatalkalinepH.Ithasbeenfoundthatacriticalcoppersulphateconcentrationexistswheresphaleriterecoveryismaximized,abovewhichthereco

2、veryofsphaleritethendecreases.Thepresenceofironinsphaleriteisdetrimentaltotherateofsphaleriteflotationandhenceitsrecovery,withthecoarserparticlesbeingmoreaffectedthatthefines.Thepresenceofiron・reducestheactivationofsphaleritebycopper,whichinturnresultsinareductionincoll

3、ectoradsorption.Keywords:Frothflotation;Flotationactivators;Flotationkinetics;ParticlesizeArticleOutline1.Introduction2.Experimentalsection3.Resultsanddiscussion4.ConclusionsReffewnces1・IntroductionAsxanthatecollectorshavearelativelylowaffinityforzincions,activationofsp

4、haleritebycopperionsisgenerallyrequiredtofloatsphalerite.Theactivationofsphaleriteinvolvestheexchangeofzincforcopperions,thusprovidingasurfacereceptivetowardscollectoradsorption(Finkelstein1997).Oneofthemainimpuritiespresentinsphaleriteis^iron,>whichsubstitutesforzincat

5、omsinthesphaleritelattice,thusreducingthenumberofzincatomsavailableforexchangewithcopper.Previousstudiesinvestigatingtheeffectof◄ironcontentinsphaleriteoncopperactivation,collectoradsorptionandsubsequentsphaleriteflotationhaveproducedconflictingresults(Pomianowskietal^1

6、975-MukherjeeandSeru1976°Soleckietal“1979.Nakahio1980、HarrisandRichter1985andGigowskietaL1991).Forexample,bothanincreaseanddecreaseincopperactivation,collectoradsoiptionandfrothflotationofsphaleritehavebeenreportedwithincreasingironcontentinsphalerite.Thelossofsphalerit

7、etotailingsinflotationcircuitsasaresultofinadequateparticlesurfacehydrophobicityreducestheeconomicviabilityoftheprocessingoperation.Thusanunderstandingoftheeffectthatironinsphaleritehasontheflotationbehaviourofthismineralmayallowustomaximisesphaleriterecovery・Intheprese

8、ntstudy,wehaveinvestigatedtheeffectofironcontentinsphaleriteonsphaleriteflotationasafunctionofparticlesize.The