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某高氧化率铅锌矿的选矿试验研究赵晖作者简介：赵晖(1986－)，女，山东德州人，助理工程师，硕士研究生，主要从事矿物成份研究工作。，张汉平（昆明冶金研究院云南昆明650031）摘要：某氧化铅锌多金属矿含铅1.09%，含锌8.39%，铅锌氧化率分别为96.34%、98.15%。为综合回收各有用矿物，采用“铅锌混合浮选—铅锌分离重选”流程进行了详细的选矿工艺研究。最终试验获得了铅品位10.71%，锌品位37.91%的铅锌混合精矿1，锌品位22.51%的锌精矿。铅总回收率为91.27%，锌总回收率为93.77%。关键词：氧化铅锌矿；选矿工艺；混合浮选；铅锌分离RESEARCHONTHEMINERALPROCESSINGTECHNOLOGYOFCERTAINALEAD-ZINCOXIDEOREZHAOHui,ZHANGHanping(KunmingMetallurgyResearchInstitute,Kunming,Yunnan650031)Abstract:Certainalead-zincmulti-metallicoxideorecontainslead1.09%,zinc8.39%.Oxiderateofleadandzincis96.34%、98.15%.Oneexampleisdiscussedinthepaperwhichpresentstheresultsofadetailedstudyundertakenforprocessingtechnology,forthecomprehensiverecoveryofthemetalsintheore.Andweuselead-zincmixedflotation-gravityseparationprocessing.Theresultoftestisasfollowings:lead-zincconcentrate1containinglead10.71%,zinc37.91%,andzincconcentratecontainingzinc22.51%.TherecoveryofLeadis91.27%,andtherecoveryofzincis93.77%.Keywords:lead-zincoxideore;processingtechnology;mixedflotation;lead-zincseparation随着工业的发展，矿藏不断的开采，矿石品位下降，大量的尾矿及低品位氧化矿堆存无法利用。因此，许多较低品位的氧化铅锌资源作为开发对象。[1,2]我国氧化铅锌矿石极为丰富是一种很有潜力的金属资源。虽然它们的可选性研究早在本世纪初就开始了,迄今为止已对其进行了一些研究并取得了一定的进展[3~8]Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 ,但由于氧化铅锌矿物种类繁多,矿物组成复杂,细泥与可溶性盐含量高,故矿物十分难选。本次研究以某地高氧化率的铅锌矿为对象，在试验中通过大量的条件试验，确定了该矿适宜的工艺流程和工艺参数。经过闭路试验验证，获得了较好的指标。1原矿性质原矿多元素分析见表1，铅化学物相分析和锌化学物相分析分别见表2、表3。原矿多元素化学分析结果表1元素PbZnAsFeSAg（g/t）含量（％）1.098.39<0.11.350.076<5.0元素Au（g/t）CuCaOMgOAl2O3SiO2含量（％）<0.20.005526.5316.80<0.500.26元素CrGeFClCd含量（％）0.0069<0.0050.0300.0940.051注：表中金、银单位为：g/t。原矿中铅化学物相分析结果表2相别硫酸铅碳酸铅方铅矿铅铁矾及其它合计氧化率%铅品位（%）0.690.30.040.0621.0996.34占有率（%）63.1927.473.665.68100.0原矿中锌化学物相分析结果表3相别硅酸盐碳酸盐硫化物铁酸盐及其它合计氧化率%锌品位（%）1.886.020.150.0448.0998.15占有率（%）23.2374.381.850.54100.01)试验矿样含铅1.09%，含锌8.39%。该矿中的铅氧化率较高为96.34%，主要以硫酸铅为主占总铅的63.19%，其次为碳酸铅占总铅的27.47%；该矿中的锌氧化率也较高为98.15%，主要以碳酸锌为主占总锌的74.38%，其次为硅酸盐占总锌的23.23%。Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 2)矿石中主要金属矿物为硫酸铅、白铅矿和菱锌矿等，脉石矿物主要为白云石和方英石。2工艺方案讨论2.1选矿试验方案设计对原矿性质的研究表明，该矿石中主要目的矿物为硫酸铅、白铅矿和菱锌矿等，铅锌氧化率均较高。对于该类矿石浮选工艺为最有效的方法，因此考虑采用“铅锌混合浮选-铅锌分离重选”流程和“铅锌优先浮选”流程对原矿进行对比试验研究。不同流程试验结果对比表4流程名称产品名称产率/%品位/%回收率/%PbZnPbZn“铅锌混合浮选-铅锌分离重选”流程铅锌混合精矿30.992.7925.1691.2793.77“铅锌优先浮选”流程铅精矿1.8427.418.9160.811.86锌精矿32.410.8424.1432.8588.88由表4可看出,相对“铅锌优先浮选”流程，“铅锌混合浮选”流程得到的精矿对铅锌的回收率均有大幅度提高。因此，综合两流程试验结果，采用“铅锌混合浮选”流程。2.2选矿试验研究2.2.1铅锌混合浮选条件试验研究1)硫化钠用量试验先用硫化钠对矿物进行硫化，然后加入胺类捕收剂对矿物进行浮选回收，试验流程见图1，结果见图2。Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 扫选Ⅰ原矿磨矿细度：-200目为70%硫化钠：变六偏：100十八铵：1002#油：30扫选Ⅱ硫化钠：变六偏：50十八铵：502#油：20粗选硫化钠：变六偏：30十八铵：302#油：103/3/3/混合精矿中矿1中矿2尾矿图1混合浮选硫化钠用量试验流程图从图2中可以看出：混合浮选硫化钠用量为3000（粗）+1500（扫Ⅰ）+800（扫Ⅱ）时，浮选混合精矿的品位和回收率相对较高。图2混合浮选硫化钠用量试验结果图3硫化钠作用时间试验结果2)硫化钠作用时间试验试验流程见图1，结果见图3。从图3中可以看出：混合浮选硫化钠作用时间为1分钟时，氧化铅锌矿已经上浮，时间过长反而指标有所下降。3)调整剂种类试验Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 在氧化矿的选矿过程中，需要添加分散剂或脉石的抑制剂，来提高粗精矿的品位，调整剂种类试验流程同图1，试验结果见图4。1—六偏磷酸钠，2—水玻璃，3—氯化钙，4—氟硅酸钠，5—CMCC图4混合浮选调整剂种类试验结果从图4中可以看出：混合浮选调整剂选择六偏（六偏磷酸钠），粗精矿的指标较高。4)调整剂六偏用量试验试验流程图同图1，试验结果见图5。图5混合浮选调整剂用量试验结果图6十八胺用量试验结果从图5中可以看出：混合浮选调整剂六偏（六偏磷酸钠）的用量为100（粗）+50（扫Ⅰ）+30（扫Ⅱ）时，浮选混合精矿的品位和回收率相对较高。5)捕收剂种类试验试验中选取十八胺和十二胺进行浮选效果的对比，试验流程同图1，试验结果见表5。混合浮选捕收剂种类试验结果表5捕收剂种类产品名称产率(%)品位（％）回收率（％）PbZnPbZnOtherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 十八铵：100+50+30精矿26.902.8523.0380.3672.71中矿18.540.9915.168.8615.20中矿22.960.778.592.392.98尾矿61.600.131.268.399.11原矿100.000.958.52100.00100.00十二铵：100+50+30精矿42.681.6514.3478.8576.72中矿114.000.858.5813.3215.06中矿25.780.433.362.782.43尾矿37.540.121.235.045.79原矿100.000.897.98100.00100.00从表中结果可知：混合浮选捕收剂选择十八胺，粗精矿的品位较高。相反十二胺的选择性差，导致粗精矿品位过低，对于下一步作业不利。6)混合浮选捕收剂十八胺用量试验试验流程同图1，试验结果见图6。从图6中可以看出：随着捕收剂十八胺的用量增加，锌的回收率有所增长，但粗精矿的品位下降。综合考虑捕收剂十八胺的用量选择100（粗）+50（扫Ⅰ）+30（扫Ⅱ）。2.2.2混合浮选小型闭路试验研究1)混合精矿粒度筛析试验在磨矿细度为-200目70%，采用硫化钠来硫化，捕收剂为十八胺，调整剂为六偏，所得的混合粗精矿进行粒度筛析，结果见表6。混合粗精矿进行粒度筛析结果表6粒级（mm）产率(%)品位（％）回收率（％）PbZnPbZn>0.0747.262.5130.7118.7928.040.074~0.03712.643.0824.6640.1539.220.037~0.0197.551.5712.3512.2211.730.019~0.0102.081.7810.673.822.80Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 0.010~0.0050.782.2811.201.831.10<0.0051.982.017.844.091.95合计32.292.4320.8980.8184.84原矿100.000.977.95100.00100.00>0.03719.902.8726.8760.3565.21从表中结果可知：粗精矿中随着粒度变细，铅锌品位逐渐下降，在0.037mm以上的粒级中，粗精矿的锌品位已经较高达到26.87%。所以对于粗精矿来说可以先用简单的筛分或分级处理，把0.037mm以上的粒级部分的矿物筛出形成精矿1，剩余部分锌品位偏低，然后再进行精选处理形成精矿2。原矿磨矿细度：变Na2S3000六偏磷酸钠100十八胺1002#油30粗选Na2S1500六偏磷酸钠50十八胺502#油20扫选Ⅰ六偏磷酸钠30十八胺302#油15扫选Ⅱ筛分精矿1硅酸钠100六偏磷酸钠100十八胺30硅酸钠50六偏磷酸钠50十八胺30精选Ⅰ精选Ⅱ硅酸钠50六偏磷酸钠50十八胺30精选Ⅲ硅酸钠50六偏磷酸钠50十八胺20尾矿中矿1中矿2中矿3中矿4中矿5中矿6+250目-250目精选Ⅳ精矿22)小型闭路试验流程见图7，试验结果见表7：Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 图7小型闭路试验流程图混合浮选闭路试验结果表7磨矿细度（-200目含量）产品名称产率(%)品位（％）回收率（％）PbZnPbZn60精矿119.532.4724.0052.9858.13精矿214.542.3119.7436.8835.58尾矿65.930.140.7710.146.30原矿100.000.918.06100.00100.00精矿1+精矿234.072.4022.1889.8693.7070精矿117.252.8727.0052.1856.02精矿213.742.7022.8539.0937.75尾矿69.010.120.758.736.23原矿100.000.958.31100.00100.00精矿1+精矿230.992.7925.1691.2793.7780精矿116.002.8727.0253.0560.27精矿210.462.8320.6334.2030.09尾矿73.540.150.9412.759.64原矿100.000.877.17100.00100.00精矿1+精矿226.462.8524.4987.2590.36从表中结果可知：磨矿细度为-200目70%时，铅锌混合精矿（精矿1+精矿2）的品位及回收率相对较高。2.2.3铅锌混合精矿处理试验研究1)铅锌混合精矿重选试验混合精矿中的铅品位约为2.8%左右，根据铅锌的比重差异，采用摇床重选工艺选出部分的铅，试验流程见图8，试验结果见表8。Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 精矿1+精矿2摇床重选混合精矿1锌精矿图8混合精矿分别摇床重选试验流程图铅锌混合精矿摇床试验结果表8产品名称产率（%）品位（％）铅回收率（%）锌回收率（%）个别对原矿PbZn个别对原矿个别对原矿铅锌混合精矿18.962.7810.7137.9135.1532.0914.2213.33锌精矿91.0428.211.9422.5164.8559.1885.7880.44原矿100.0030.992.7323.89100.0091.27100.0093.77从表中结果可知：将精矿1和精矿2混匀进行重选试验，最终得到的铅锌混合精矿1含铅10.71%，含锌37.91%，；锌精矿含锌22.51%，含铅1.94%。铅回收率为91.27%，锌回收率为93.77%。2)铅锌混合精矿处理方案探讨通过混合浮选最终得到了含铅2.79%，含锌25.16%的混合精矿，铅回收率为91.27%，锌回收率为93.77%，铅锌的回收率已相对较高；为了能使混合精矿中铅锌得到分离，通过对产出的混合粗精矿进行了简单的浸出试验，锌的浸出率达到97%；混合精矿中的铅，通过加酸浸出后形成硫酸铅，品位得到了一定的富集达到5.74%。根据浸出渣各矿物之间的性质差异，考虑采取以下两种方案对于浸出渣中的铅进行回收：a.浸渣-分级-摇床选铅；b.浸出渣浮选选铅。方案a中：硫酸铅密度为6.2g/cm3，渣中脉石矿物的主要为硫酸钙、镁矿物Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 ，密度跟别为2.61g/cm3、1.68g/cm3，其密度差较大。因此，考虑采用重选将硫酸铅与脉石矿物分开。在浸出率较高的前提下，浸出渣通过分级后摇床重选对铅进行选别回收，预计将得到较高品位的铅精矿；铅回收率也比优先浮选流程中铅回收率高。方案b中：与脉石矿物相比，硫酸铅的溶解度较小可浮性较好。采用浮选选铅，用硫化钠先将硫酸铅矿物硫化后用黄药类捕收剂对铅进行回收；预计通过浮选也将得到品质较高的铅精矿。3结论1)试验矿样的有价金属为铅、锌；含铅1.09%，锌8.39%；铅氧化率较高为96.34%，主要以硫酸铅为主占总铅的63.19%，其次为碳酸铅占总铅的27.47%；锌氧化率也较高为98.15%，主要以碳酸锌为主占总锌的74.38%，其次为硅酸盐占总锌的23.23%。矿石中主要金属矿物为硫酸铅、白铅矿和菱锌矿等，脉石矿物主要为白云石和方英石。2)根据矿石性质特点及结合以往对该类矿石研究的经验，采用“铅锌混合浮选—重选分离”流程。最终闭路试验指标见表9。最终闭路试验指标表9产品名称产率/%品位/%回收率/%PbZnPbZn铅锌混合精矿30.992.7925.1691.2793.77铅锌混合精矿12.7810.7137.9132.0913.33锌精矿28.211.9422.5159.1880.44该流程具有流程短，指标高，用药少，生产成本低，尾水可以直接回用等优点。3)与混合浮选流程相比，优先浮选流程首先尾水无法回用，需对回水进行处理从而大大增加了生产成本，且流程较长、指标差。4)通过混合浮选铅锌的回收率已相对较高，为了能使混合精矿中铅锌充分分离，笔者考虑采取以下两种方案：a.“铅锌混合精矿-酸浸-分级-摇床选铅”方案；b.“铅锌混合精矿-酸浸-浸出渣浮选选铅”方案。Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11 参考文献[1]郑之旺.T-iIF钢热镀锌钢板力学性能的控制[J].钢铁钒钛,2006(9)：1-2.[2]陈锦全.高铁泥化氧化铅锌矿的浮选试验研究[J].矿业研究与开发,2007(10)：50.[3]罗先平.某氧化铅锌矿浮选工艺试验研究[J].有色金属(选矿部分),2005(1)：6~10.[4]李松春.某氧化铅锌矿选矿试验研究与生产实践[J].有色矿山,2002(2)：25~28.[5]邵广全.低品位复杂难处理氧化铅锌矿选矿工艺研究[J].矿冶,2006(3)：21~26.[6]皇甫明柱，王宏菊，刘全军.云南某低品位氧化铅锌矿石选矿试验研究[J].金属矿山，2009（8）：49~79[7]梁友伟.某难选铅锌矿石浮选分离试验研究[J].矿产综合利用，2008(3)：3~8[8]张曙光，李晓阳，张杰.兰坪难选氧化铅锌矿浮选工艺研究[J].云南冶金，2005（5）：11作者简介赵晖，女，出生于1986年，山东省德州人，助理工程师，硕士学位，主要从事矿物成份研究工作。联系电话：13708871041，通讯地址：云南省昆明市圆通北路86号昆明冶金研究院物质成份研究室，邮编：650031，电子信箱：zh860108@163.com。Otherwisethepumpshouldbecheckedagaintoinstall.4.2.5.1structureembeddedphase1,toiletdrainstructureplacesawaterproofsteelbushings,measurewidthofthebeam,usegalvanizedsteelpipeweldingandsealingrings,measureelevationonpositionsinthestructuremainbarsofbeams,weldedprisonusingsawdustblock.Holethinironsleeveconstruction,lengthabout200mm,easyinstallationandhandleconstruction,casingusedtouchRemover(availableusedoilpaint),Eachd8,transferandundergrounddrainagepipeinstallationmounting,hang-drypipemustfirstmakeanoutline,thecarrieraccordingtothedesignofslopeplantedwellhungcode,pipehangers,prefabricatedpipingBayandstateprovisionandothersanitaryanddrainageprovisionforfindingsizes,clamptheconnectioninterface.Theconnectionbetweenthepipeandthemainpipetoensuresmooth,slopingaccordingtodesignrequirements,nocamberbehavioroccurs.Buriedtrunkpipesupportingframe,beforeyouinstallDUN,plantedwellpipesizes,willbereservedforfindingandfixedthepipesize,andthensealingwithcementmortar.9,aftertheconstructionofwatertesting,watertestingandwelloutsidethrough-ballaftercompletionofconstruction.10,constructionnotes:whenusingmetalpipeclamps,11
