低品位硼镁石的浮选分离-研究

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1、东北大学硕士学位论文摘要收率为74．39％；尾矿产率为61．44％，尾矿中B203品位为3．44％，试验指标较好，达到预期目标。最后，利用红外光谱、ZETA电位、SEM等表征手段，通过对浮选矿物的表面吸附、电动力学及溶液化学的分析，对浮选药剂与矿物之间的作用机理及浮选过程进行了初步探讨。本研究实现了低品位硼镁石的浮选分离，对低品位硼镁石资源的回收利用具有一定的指导意义。关键词：硼镁石；蛇纹石；浮选；FLM3．IV．东北大学硕士学位论文AbstractResearchonFlotationProcessingTechnol

2、ogyforLowGradeAschariteOreAbstractChinaisoneoftheworld’Sboronresource-richcountries，Boronorereservesrankedthefourthintheworld．BoronoreresourcesinChinamainlydistributedinLiaoning,Jilin，QinghaiandTibetprovinces．Atpresent，oredilutionofboronresourcesinLiaoningandQing

3、haiprovincesareaseriousproblemduetominingfordecadesandabandoninglowgradeoreswhenmininghighgradeores．Theaschariteoreresourceswhichisgreaterthanthe12％，Canbedirectlyusedforchemicalrawmaterial，haslessthan2milliontons．Butthelow-gradegradeaschariteorewhichisbetween6％an

4、d12％hasgreatreserves．Bytheendof2009．theaschariteoreresourceswhichgradeisgreaterthan12％inDandongregionwas1．1625milliontons，historicallegacyofabandonedlowgradeboronoreestimateof100milliontons，whichprovidesresourcebasefortheprocessingresearchofthelowgradeofboronore．

5、Thepurposeofthispaperistofindaneffectiveseparationmethodofenrichingtheascharitemineralfromtheganguemineralssuchasserpentine，expandingboronorereservesofresourcesavailable，tapingthepotentialofexistingboronoreresources，alleviatingtheshortagesituationofboronore，ensur

6、ingofboronindustrialsustainabledevelopment．Atfirst，theaschariteorewascharacterizedbyspectralanalysis，elementalanalysisandXRDanalysis，theresultsshowthattheoreisthelowgradeaschariteore；themainganguemineralsisserpentine，followedbydolomite，calciumfeldspar，bruciteandS

7、Oon．Thenthepuremineralflotationwasbeendone，theresultsuggestthatsodiumacidismoresuitableasfloatationcollectorsthandodecylamine．Calciumlignosulphonateisthebestinhibitorsofseparatingascharite，serpentineanddolomite．Artificialmixedflotationseparationtestresultsshowtha

8、tcalciumlignosulphonateisthebestselectiveinhibitorsofseparatingascharite，serpentineanddolomite．Whentheamountis60mg／L，concentrategradeof16．05％，therecoveryrateis