English
Whichkindofdust-proofmaskisgoodforcoalmines?Howtojudgethequalityofdust-proofmasksforcoalmines?Duringtheprocessofcoalmineexcavationandgrinding,thecoalminedustgeneratedisthemainoccupationalhazardfactorforcoalminers.Coalminerswhoinhaledustcontainingfreesilicaforalongtimearepronetooccupationaldiseasessuchaspneumoconiosis.Wearingprofessionalcoalminedust-proofmaskscaneffectivelypreventdustandtoxicsubstancesfrombeingabsorbedbythehumanrespiratorytract.Byisolatingharmfuldust,itensurestherespiratorysafetyofcoalminers.
So,whichkindofcoalminedust-proofmaskisreallygood?Whatkindofdust-proofmaskissuitableforuseinthecoalmineindustry,andhowshouldenterpriseschoosecoalminedust-proofmaskswhenpurchasing?Thequalityofcoalminedust-proofmaskscanbejudgedfromthreeaspects:theprotectionlevelofthemask,thematerialofthemask,andthepriceofthemask.
I.TheProtectionLeveloftheMask
Firstofall,weshouldpayattentiontotheprotectionlevelofcoalminedust-proofmasks.Atpresent,mostcoalminersuseKN90masks,andthedustfiltrationefficiencyofthesedust-proofmasksisabout90%.However,sincemostKN90masksfocusontheprotectionefficiencyofthefiltercottonmaterialandneglectthetightfitbetweenthemaskandtheface,theprotectionefficiencyishigherthanthelevelof5%.
However,thecurrentKN90masksonlyfocusontheprotectionefficiencyofthefiltercottonanddonotpayattentiontothefitbetweenthedustmaskandtheface.Therefore,theleakagerateisfarhigherthanthelevelof5%.ThecurrenthighestlevelsareN95andKN95,thatis,thefiltrationefficiencyis95%.Basically,itcompletelyeliminatestheharmofdusttothehumanbody.Basedontheabove,N95dust-proofmasksshouldbeselectedforcoalminedust-proofmasks.
II.TheMaterialoftheMask
Secondly,accordingtotheprincipleoflikedissolveslike,forthosewithoilyskin,wearingarubbermaskwillcausethemasktoswellandrot.Wearingarubbermaskforalongtimewillmaketheskinitchyandevencauseredrashes.Sowhenbuyingcoalminedust-proofmasks,besuretoavoidusingmasksmadeofrubbermaterial.Themainbodyofagoodcoalminedust-proofmaskisgenerallymadeofsilicagelmaterial,whichisnon-allergenicandcomfortabletowear.
III.ThePriceoftheMask
Thepriceofcoalminedust-proofmasksisalsosomethingweshouldfocuson.Thelongertheservicelifeofthecoalminedust-proofmask,therelativelylowerthecost.Onthepremiseofensuringtheprotectionqualityandcomfort,theprincipleistoeffectivelyreducetheprotectioncost.Althoughtheunitpriceofsomecoalminedust-proofmasksisverylow,duetopoorqualityandshortservicelife,itwillleadtohighactualprotectioncostsorindirectlycausephysicalharm.
PrecautionsforBuyingCoalMineDust-proofMasks
1.TheQualityoftheMask.Aqualifiedcoalminedust-proofmaskshouldobtaintheGB2626-2006certification.Low-pricedandlow-qualitydust-proofmaskscannotprovideeffectiveprotection.
2.TheProtectionLevel.Alowprotectionlevelmeanslowfiltrationefficiencyandalargeleakagerate,sothatthewearercannotgeteffectiveprotection.TheKN100leveliscurrentlythehigh-protection-levellaborprotectionproductamonghalfmasks.
3.TheComfortofWearing.Amaskwithpooradaptabilitymayleadtodustleakageorthewearermayfrequentlytakeoffthemaskduetofacialdiscomfortduringwearing,thussufferingunnecessaryharm.Especially,somemaskshaveanodororcauseskinallergies,makingitimpossibletowearthemforalongtime.
