提高煤泥浮选捕收剂性能的试验研究.pdf

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1、提高煤泥浮选捕收剂性能的试验研究吉登高，蔡阳辉，彭素琴，吴越(太原理工大学矿业工程学院，山西太原030024)摘要：针对煤泥浮选捕收剂分散难、选择性差、用量大等问题，利用不同化工产品及表面活性剂，将煤油制备成复合捕收剂用于煤泥浮选。分别进行了煤油、复合捕收剂的优选试验及浮选速度试验。优选试验表明：当煤油用量为900g／t，仲辛醇用量为450g／t时，煤油浮选效果最佳；当Fy一4复合捕收剂用量为500g／t，仲辛醇用量为450s／t时，精煤灰分为9．96％，精煤产率为88．72％，可燃体回收率为94．82％，在精煤灰分相近的条件下，Fy一4复合捕收剂的用量比煤

2、油降低了44．44％，精煤产率和可燃体回收率分别提高了0．06％和0．16％。浮选速度试验表明：Fy一4复合捕收剂不仅节省了药剂用量，而且提高了煤泥浮选活性，提升了精煤浮选速度。最后探讨了无机电解质NaC1对复合捕收剂浮选效果的影响，当NaCI浓度为0．05mol／L时，煤泥颗粒Zeta电位更趋近零电点，降低了煤泥颗粒的相对接触角，改善了煤泥浮选效果。关键词：复合捕收剂；浮选速度；无机电解质；Zeta电位；相对接触角中图分类号：TD943．13文献标识码：A文章编号：1006—6772(2012)02—0006—04Experimentalresearcho

3、nimprovementofcoalflotationcollectorsjIDeng—gao，CAIYang—hui，PENGSu—qin，WUYue(CollegeofMiningTechnology，TaiyuanUniversityofTechnology，Taiyuan030024，China)Abstract：Largeconsumption，poorselectivityandfailingtodispersearepresentlythemaindisadvantagesofslimeflotationcollector．Inordertor

4、esolvetheseproblems，takingkeroseneasrawmaterial，avarietyofchemicalproductsandsurfactantwereusedtopreparecompoundcollectors．Conductoptimizationexperimentsandflotationratetestexperimentsofkeroseneandcompoundcollector．Theresultsofoptimizationexperimentsshowthatwhiletheconsumptionofker

5、oseneis900g／tandOctanol-2is450g／t，theeffectofkeroseneflotationisbest．WhiletheconsumptionofFy一4compoundcollectoris500g／tandOctanol一2is450g／t．theeffectofFy一4compoundcollectorflotationiSbest，cleancoalashis9．96percent，cleancoalrecoveryiS88．72percent．andcombustiblerecoveryis94．82percent

6、．Keepingashnearlyunchanged，theconsumptionofFy-4compoundcollectoris44．44percentlowerthankerosene，cleancoalrecoveryandcombustiblerecoveryareincreasedby0．06percentand0．16percentrespectively．FlotationspeedtestsprovethatFy-4compoundcollectornotonlysavetheconsumptionofreagent，butalsoimpr

7、ovestheactivityofreagent，SOtoenhancethecoalfloatingspeed．Atlast，theimpactonFy一4compoundcollectorflotationofNaC1inorganicelectrolytewasstudied．WhiletheNaC1concentrationis0．05mol／L，Zetapotentialofcoalslimeismuchclosertozeropoint，relativecontactangleofcoalslimeisreduced，coalflotatione

8、ffectisimproved．Keywords：c