資源描述：
《煤的潤(rùn)濕特性及其與潤(rùn)濕降塵劑的性能匹配研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、AbstractInthecoalexploitingprocess,Coaldustisasignificanthiddendangerandthreatenshumanhealth.Thebasicpropertiesandwettabilityofdifferentcoaltypeswereanalyzed.Accordingtothewettingeffectofdifferenttypesurfactantsoncoalparticles,surfactantswithbetterperfor
2、mancewereselectedoutandwettingdust-fallagentwasprepared.Thebasicpropertiesof12typesofcoalsampleswasanalyzedincludingproximateanalysis,ultimateanalysis,particlesizedistribution,contactangleetc.inordertoanalysisthewettabilityofthecoalsamples.Basedonbasicpr
3、operties,thechemicaldustcontroltechnologywasintroducedthatsurfactantswasaddedintowater.Determinationofsurfactantmonomersandcombinationsolution,includingsurfacetension,contactangle,dustsettlingexperiment,showsthatthewettingabilityofwatersolutiononcoaldust
4、isgreatlyimprovedwhensuitablesurfactantsareaddedintowater.Thecriticalmicelleconcentration(CMC)ofmostofsurfactantsolutionsisabout0.06%.Withtheincreaseofsolutionconcentration,thecoaldustsettlingtimeisreducedandthewettingeffectisimproved.Inaddition,thesettl
5、ingtimeofsurfactantcombinationsolutionisbelow2minutes,whichisfarlessthanthetimeofsurfactantmonomers.Nonionicsurfactanthasthebesteffectonimprovingthewettingabilityofcombinationsolution.Andthesettlingtimeofcombinationsolutionwhichcontainsnonionicsurfactant
6、islessthan1minute.Butthecationicsurfactanthaspoorability.Inorganicsalts,includingNaCl,CaCl2,Na2SiO3,Na2SO4,wereselectedassynergistsandabsorbentagent.Theresearchshowsthataddinginorganicsaltsgoesagainstdustsettlingfornonionicsurfactant.Butthewettingability
7、ofanionicsurfactantisgreatlyimprovedasaddedinorganicsalts,andthesettlingtimeisreducedfromabout20minutesto1minute.Theabilityofinorganicsaltstoimprovethewettabilityofanionicsurfactantisinthefollowingdescendingorder:CaCl2>Na2SiO3>NaCl>Na2SO4。Intermsofwaterr
8、etention,fouroftheinorganicsaltscandelaytheevaporationofwaterincoalsamples.AndCaCl2hasthebestwaterretentioneffect,whosemoisturecontentisnolessthan5.71%，nextcameNaClandNa2SiO3.Na2SO4producespooreffect.Orthogonalexperimentof
