资源描述：
《煤的润湿特性及其与润湿降尘剂的性能匹配研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
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
