含稀土中低品位磷矿石浮选试验分析-flotation test analysis of medium and low grade phosphate ore containing rare earth.docx

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2018-06-05 发布于上海
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含稀土中低品位磷矿石浮选试验分析-flotation test analysis of medium and low grade phosphate ore containing rare earth.docx

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含稀土中低品位磷矿石浮选试验分析-flotation test analysis of medium and low grade phosphate ore containing rare earth

关键词：织金磷矿；胶磷矿；白云石；反浮选；机理AbstractPhosphorusistheimportantrawmaterialofagriculture,withthe fastdevelopment ofeconomyinourcountry, thedemandforphosphorusresourceisexpanding,andtheresourceisreducingconstantly,especiallyhigh-gradephosphoriteresources,sothemedium-lowgradephosphateoreisinpressingneedofstudiesondevelopmentandutilization.Xinhuarare-earths-bearingphosphoriteminingareainZhijinofGuizhouprovinceisaverylargeandcomprehensivedepositthatcontainsbothrareearthsandphosphateore,thephosphoriteorereservesisapproximately1.3billionton,ofwhichtheprovedindustrialreseresofdolomiticphosphoriterockthatcontainsrareearthsbiologicaldebrisis0.5billionton,whichaccountsformorethan90%ofthereservesofdolomiticphosphoriterockoftheentireminingarea.RationaldevelopmentandutilizationofZhijinmedium-lowgradephosphoriteresourcescancertainlypromotesustainabledevelopment,andenhancethe comprehensiveutilizationoftheresourcesaswell,whichisofgreatimportanceinpromotingsustainabledevelopmentofChinasphosphateindustry.Thispapermainlystudiesthemedium-lowgradeofrare-earths-bearingphosphoriteinzijinarea,onthebasisofstudyonorematerialcomposition,puremineralandrealoreflotationtestswerecarriedoutinordertostudytheseparatebetweencollophaniteanddolomite,andobtainedcompatibleprocess;then,themechanismofflotationagentandmineralwasstudiedbythecontactAngle,theZetapotentialmeasurementandinfraredspectroscopicanalysis.Testingmeanssuchaschemicalanalysismethods,X-raydiffractionandopticalmicroscopywereusedinthemineralogicalresearch,resultsshowsthatthecontentofP2O5inthefeedis23.78%,andMgOis6.01%,thecontentofP2O5inthefeedmostlyexistsinthe collophanite,occupying99.46%,andthemainrecoveredmineraliscollophaniteinthisore.Inthepuremineralflotationtests,itdiscussestheeffectofthedifferentpHvalue,inhibitorstypesanddosage,collectorconsumptionincollophanite—dolomitesystemofseparating,andresultsshowsthatseparationeffectisbetterofcollophanite-dolomitebyusingWSPasdepressor,whichthedosagerangeis1.67～3.33m3/L,andZWascollector,whichthedosageis