铅鼓风炉中铜、硫、砷和锑对银分布的影响.pdf

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1、Availableonlineatwww．sciencedirect。comnansactionsof繇ScienceDirectNonferrousMetaisSocietyofChinaPressTrans．NonferrousMet．Soc．China24(2014)1202—1209www．tnmsc．cnEffectofcopper,sulfur,arsenicandantimonyonsilverdistributioninphasesofleadblastfurnaceJ．CHAIDEZ．FELIX．A．R0MER

2、o．SERRANO，A．HERNANDEZ—RAMIREZ，M．PEREZ—LABRA．I．ALMAGUER—GUZMAN，R．BENAVIDES．PEREZ，M．FL0RES．FAVELA1．MetallurgyandMaterialsDepartment，IPN-ESIQIE，UPALM，Zacatenco，C．E07738，MexicoD．F．，Mexico；2．AcademicAreaofEarthScienceandMaterials，UAEH，Co1．Carboneras，MineraldelaReforma，C．E

3、42184，Hidalgo，M6xico；3．ServiciosAdminis仃atiVosPetiolesS．AdeC．VPro1．ComonfortSur2050．Co1．L．Echeverria．Torreon．C．E27300Coahuila，MexicoReceived9August2013：accepted17November2013Abstract：Anexperimentalstudywascarriedouttoestimatethee肫ctoftheleadimpuritiesonthesilverdistr

4、ibutioninthephasesformedintheleadblastfumace．SamplesofsinterwithdiferentcontentsofCu，S，AsandSbwereequilibratedunderreducingatmosphere(CO)／p(CO2)=2．45)at1573Kinatubefumaceandslowlycooled．Thesampleswerecharacterizedbyscanningelectronmicroscopyandmicroanalysis(SEM—EDS)．

5、Therewerefiveimmisciblephases：slag(CaO，FeOandSiO2)，mare(S，CuandFe)，speiss(As，FeandCu)，Cu-Sbphaseandleadbullion(Pb，Ag，Sb，Cu，etc)．TheresultsshowedthatCuandSbpromotesilverlossesduringtheprocesssincetheyformaliquidsolutionwithhighersilversolubilitythanliquidbullion．Sulfu

6、randarsenicreactwithcoDpertoformthematteandspeissphases，respectivelY．Thee髓ctofSandAsistoreducetheamountofCu_Sballoyandthenthesilverlossesfromthebullion．Keywords：leadblastfurnace；silver；leadimpuritiesthroughaverticalshaftincountercurrenttothe1Introductionascendingredu

7、cinggasflow．Thedescendingchargesuccessivelypassesthroughthepreheatingzone(473K)，Themainsourceofleadisgalena．PbS．whichisthereactionorreductionzonef1173K)，themeltingzoneconcentratedbyflotation，containingmetallicimpurities(1423K)，andfinallythecombustionzone(tuyerezone)．

8、suchasiron，copper,zinc，arsenic，antimony,tmandTheproducedliquidphases(slag，mare，speissandpreciousmetals．Theoxidationroastingofleadsu