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1、提高煤泥浮選捕收劑性能的試驗研究吉登高，蔡陽輝，彭素琴，吳越(太原理工大學(xué)礦業(yè)工程學(xué)院，山西太原030024)摘要：針對煤泥浮選捕收劑分散難、選擇性差、用量大等問題，利用不同化工產(chǎn)品及表面活性劑，將煤油制備成復(fù)合捕收劑用于煤泥浮選。分別進(jìn)行了煤油、復(fù)合捕收劑的優(yōu)選試驗及浮選速度試驗。優(yōu)選試驗表明：當(dāng)煤油用量為900g／t，仲辛醇用量為450g／t時，煤油浮選效果最佳；當(dāng)Fy一4復(fù)合捕收劑用量為500g／t，仲辛醇用量為450s／t時，精煤灰分為9．96％，精煤產(chǎn)率為88．72％，可燃體回收率為94．82％，在精煤灰分相近的條件下，F(xiàn)y一4復(fù)合捕收劑的用量比煤
2、油降低了44．44％，精煤產(chǎn)率和可燃體回收率分別提高了0．06％和0．16％。浮選速度試驗表明：Fy一4復(fù)合捕收劑不僅節(jié)省了藥劑用量，而且提高了煤泥浮選活性，提升了精煤浮選速度。最后探討了無機(jī)電解質(zhì)NaC1對復(fù)合捕收劑浮選效果的影響，當(dāng)NaCI濃度為0．05mol／L時，煤泥顆粒Zeta電位更趨近零電點(diǎn)，降低了煤泥顆粒的相對接觸角，改善了煤泥浮選效果。關(guān)鍵詞：復(fù)合捕收劑；浮選速度；無機(jī)電解質(zhì)；Zeta電位；相對接觸角中圖分類號：TD943．13文獻(xiàn)標(biāo)識碼：A文章編號：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．a(chǎn)ndcombustiblerecoveryis94．82percent
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
