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1、第24卷第1期礦冶Vo1.24,No.12015年2月MINING&METALLURGYFeburarv2015文章編號(hào):1005—7854(2015)01—0044-06電解法從鉛陽(yáng)極泥提取鉍的研究陳漢森徐瑞東朱云何世偉華宏全李英偉(1.昆明理工大學(xué)冶金與能源工程學(xué)院,昆明650093;2.云南省復(fù)雜有色金屬資源清潔利用國(guó)家重點(diǎn)實(shí)驗(yàn)室(培育),昆明650093;3.云南銅業(yè)股份有限公司冶煉加工總廠,昆明650102)摘要:從鉛陽(yáng)極泥中提取鉍并富集金銀等有價(jià)金屬元素,對(duì)提高冶金二次資源的綜合利用具有重要意義。將脫砷后鉛陽(yáng)極泥熔鑄成粗鉍作為BiC1一HCI·NaCI電解
2、體系的陽(yáng)極,重點(diǎn)研究了溫度、電流密度、酸度、B濃度、NaCI添加量對(duì)電解過(guò)程的影響??疾炝穗娏餍?、電能消耗及陰極產(chǎn)物純度。結(jié)果表明,在電解液溫度3Ooc、電流密度150A/m、游離HCI濃度8Og/L、Bi“濃度120g/L、NaCI添加量80g/L條件下,得到了致密的薄板狀陰極鉍,電流效率達(dá)到98%,電能消耗約為136(kW·h)/t陰極鉍純度達(dá)到99.8%。關(guān)鍵詞:脫砷;鉛陽(yáng)極泥;電解;回收中圖分類(lèi)號(hào):TF812文獻(xiàn)標(biāo)志碼:Adoi:10.3969/j.issn.1005-7854.2015.O1.011REC0VERYOFBISMUTHFROMLEADANOD
3、ESLIMEBYELECTROLYSISCHENHan—sen'XURui—dong'ZHUYu’HEShi—wei'HUAHong.quanLIring.wet‘(1.FacultyofMetallurgicalandEnergyEngineering,KunmingUniversityofScienceandTechnology,Kunming650093,China;2.StateKeyLaboratoryBreedingBaseofComplexNonferrousMetalResourcesCleaningUtilizationinYunnanProvinc
4、e,Kunming650093,China;3.MetallurgicalProcessingPlant,YunnanCopperCo.,Ltd.,Kunming650102,China)ABSTRACT:Theextractionofbismuthandenrichmentofothervaluablemetalssuchasgoldandsilverelementsfromleadanodeslimewasimportanttoimprovethecomprehensiveutilizationofmetallurgicalsecondaryresources.I
5、nthispaper.1eadanodeslimeofarsenicremovalwascastintocrudebismuthandusedasanodeintheBiC1一HC1一NaC1electrolytesystem.Theinfluencesoftemperature,currentdensity,acidity,Bi“concentrationandtheaddi—tionlevelofNaC1ontheelectrolysisprocesswerediscussed.Thecurrenteficiency,powerconsumptionandpuri
6、tyofcathodeproductwereinvestigated.Optimumprocessparameters,namely,temperatureof30℃,currentdensityof150A/m,acidityof80g/L,Bi¨concentrationof120g/LandtheadditionlevelofNaC1of8Og/L,wereas—certained.Theresultshowsthatunderoptimumconditions,densesheet.shapedcathodebismuthwasobtained,thecurr
7、entefficiencyreached98%,thepowerconsumptionwasabout136(kW·h)/tB。andthepurityofcathodebis—muthreached99.8%.KEYWORDS:arsenicremoval;leadanodeslime;electrolysis;recovery鉛陽(yáng)極泥是粗鉛電解精煉過(guò)程中產(chǎn)出的一種副收稿日期:2013-09—15產(chǎn)品,由于富集了鉍、銻、銀等有價(jià)金屬,所以是回收基金項(xiàng)目:校企合作項(xiàng)目(619320130038)作者簡(jiǎn)介:陳漢森,碩士研究生,專(zhuān)業(yè)為冶金工程。鉍的重要原