福建某高硫、低品位复杂多金属矿选矿试验研究.pdf

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1、第32卷第2期矿冶工程V01．32№22012年04月MININGANDMETALLURGICALENGEEIUNGApril2012福建某高硫、低品位复杂多金属矿选矿试验研究①陈军，刘苗华，肖金雄，刘忠荣，石云良(长沙矿冶研究院有限责任公司，湖南长沙410012)摘要：福建某高硫低品位复杂多金属铅锌硫化矿的硫含量高达25．40％，铅锌品位很低，有用矿物产出形式较为复杂，交代穿插现象多见，嵌布粒度分布不均。经研究探索后，采用阶段磨矿阶段浮选流程，铅、锌、硫依次优先浮选。确定了合适的工艺流程和合理的药剂制度，第一段磨矿粒度为一0．074mm粒级

2、占85．74％，获得铅锌粗精矿；铅锌粗精矿分别再磨至一0．045inln粒级占90％左右，铅回路采用一粗、四精、二扫流程，锌回路采用一粗、四精、二扫，硫回路采用一粗、一精工艺流程，小型闭路流程试验获得了铅品位42．13％，回收率64．25％的铅精矿，铅精矿中含锌5．47％；锌矿物锌品位40．27％，回收率61．07％，锌精矿中含铅1．07％，硫精矿硫品位为43．31％，回收率为85．48％，硫精矿中含铅锌分别为0．14％和0．58％。关键词：浮选；复杂多金属矿；铅；锌；硫化矿；优先浮选中图分类号：TD923文献标识码：A文章编号：0253—6

3、099(2012)02—0034一o5ExperimentalStudyonSomeLow-gradeandHigh—sulfurComplexPolymetallic0reinFujianCHENJun，LIUMiao—hua，XIAOJin-xiong，HUZhong—rong，SHIYun—liang(ChangshaResearchInstituteofMining&MetallurgyCoLtd，Changsha410012，Hunan，China)Abstract：Thesulfurcontentinalow—gradecompl

4、expolymetallicPb—ZnsulfideorefromFujianisashighas25．40％，whilethegradeofleadandzincisverylow，andtheoutputformsofvaluablemineralsarecomplicatedinthelightofthemetasomatism—penetrationphenomenaandthemaldistributionofdisseminatedsize．Afteranexperimentalcomparison，aflowwithproces

5、sesofstagegrinding，stageflotation，andsequentialselectiveflotationoflead，zincandsulfur，wasadoptedandrationalreagentsystemwasdetermined．Pb-Znroughconcentratecanbecollectedafterthefirst—stageofgrindingwiththefinenessof一0．074mmfractionas85．74％，then，itwastreatedbyregrindingwitht

6、hefinenessof一0．045mmfractionaround90％．Boththeleadandthezincflotationcircuitconsistofoneroughing，fourcleaningandtwoscavenging，whilethesulfurflotationcircuitconsistsofoneroughingandonecleaning．Accordingtotheclosed—cir-cuittest，aleadconcentratewithzinccontentof5．47％andwithlead

7、gradeandrecoveryof42．13％and64．25％，respectively，azincconcentratewithleadcontentof1．07％andwithzincgradeandrecoveryof40．27％and61．07％，respectively，andasulfurconcentratewithleadcontentof0．14％，zinccontentof0．58％andwithsulfurgradeandrecoveryof43．31％and85．48％，respectively，canbeobta

8、ined．Keywords：flotation；complexpolymetallicore；lead；zinc；sulfideore；selectiveflota