Alaabta ceeriin: Maxay yihiin alaabta ceeriin ee loo isticmaalo soo saarista kaarboon?
Soosaarka kaarboonka, alaabta ceyriinka ah ee sida caadiga ah loo isticmaalo waxaa loo qaybin karaa walxo cayriin ah oo kaarboon ah iyo binder iyo wakiilka impregnating.
Walxaha cayriin ee kaarboonka adag waxaa ka mid ah coke batroolka, kookaha bituminous, coke bituminous coke, anthracite, garaafyada dabiiciga ah iyo qashinka garaafka, iwm.
Qalabka wax lagu xidho iyo walxaha uurjiifka ah waxaa ka mid ah garoon dhuxusha, daamurka dhuxusha, saliidda anthracene iyo resin synthetic, iwm.
Intaa waxaa dheer, qaar ka mid ah qalabka caawiya sida ciidda quartz, walxaha kookaha ee birta ah iyo budada kookaha ayaa sidoo kale loo isticmaalaa wax soo saarka.
Qaar ka mid ah alaabta kaarboon iyo garaafyada gaarka ah (sida fiber carbon, carbon activation, carbon pyrolytic iyo graphite pyrolytic, carbon galaas) ayaa laga soo saaraa walxo kale oo gaar ah.
Calcination: Waa maxay calcination? Waa maxay alaabta ceeriin ee loo baahan yahay in la kariyo?
Habka daaweynta kulaylka waxaa loo yaqaan calcination.
Calcination waa habka daaweynta kulaylka ugu horreeya ee soo saarista kaarboonka. Calcination-ku wuxuu keenaa isbedelo isdaba joog ah oo ku yimaada qaab dhismeedka iyo sifooyinka jirka iyo kiimikaad ee dhammaan noocyada alaabta ceeriin ee carbonaceous.
Heerkulka kookaha samaynta kookaha bituminous iyo kookaha birta ah waa mid aad u sarreeya (ka sarreeya 1000C), taas oo u dhiganta heerkulka foornada calcining ee warshadda kaarboonka. Ma sii kicin karto oo kaliya waxay u baahan tahay in lagu qalajiyo qoyaan.
Si kastaba ha ahaatee, haddii kookaha bituminous iyo kookaha batroolka la wada isticmaalo ka hor inta aan la jarin, waa in loo diraa calciner si loogu daro kookaha batroolka.
Garaafyada dabiiciga ah iyo kaarboon madow uma baahna calcination.
Habka qaabaynta balaastiggu inta badan waa habka qallooca caagga ee koollada.
Habka extrusion ee koollada waxaa lagu fuliyaa qolka walxaha (ama dhululubada koollada) iyo godka wareegtada.
Xabagta kulul ee qolka raritaanka waxaa wata tuubada weyn ee danbe.
Gaaska ku jira koollada ayaa lagu qasbay in si joogto ah loo saaro, koollada ayaa si joogto ah isku duuban oo koollada horay u socotaa isla waqti isku mid ah.
Marka koollada ay u guurto qaybta dhululubada ee qolka, koollada waxaa loo tixgelin karaa socodka xasilloon, lakabka granular-ka ayaa asal ahaan barbar socda.
Marka koollada ay soo gasho qayb ka mid ah nozzle extrusion leh qallafsanaanta arc, koollada ku dhow darbiga afka waxay ku xiran tahay iska caabin weyn oo horudhac ah, maaddadu waxay bilaabataa inay foorarsato, koollada gudaha waxay soo saartaa xawaare hore oo kala duwan, koollada gudaha ayaa horay u sii socota. Horudhac, taasoo keentay in badeecada ay weheliso cufnaanta radial maaha mid la mid ah, sidaas darteed xannibaadda extrusion.
Ugu dambeyntii, koollada ayaa gasha qaybta qallooca toosan oo la sii daayo.
Dubintu waa habka daawaynta kulaylka kaas oo badeecadaha cayriin ee la cadaadiyay lagu kululeeyo heer go'an iyadoo la eegayo xaaladda go'doominta hawada ee dhexdhexaadiyaha difaaca ee foornada.
Inta lagu guda jiro habka duban, ay sabab u tahay ciribtirka volatiles, coking of asphalt ka samaysan yahay shabagga kookaha ah, dami iyo polymerization of asphalt, iyo formation of weyn oo giraanta diyaaradda network lix geesle ah, iwm, iska caabin ah ayaa si weyn hoos u dhacay.About 10000. x 10-6 alaabta ceeriin iska caabin Ω "m, ka dib markii la dubay by 40-50 x 10-6 Ω" m, loo yaqaan kirishbooyada wanaagsan.
Ka dib markii la dubay, alaabtu waxay hoos u dhigtaa qiyaastii 1% dhexroorka, 2% dhererka iyo 2-3% mugga.
Si kastaba ha ahaatee, ka dib marka la dubayo alaabta ceeriin, qayb ka mid ah asphalt-ka dhuxusha ayaa u kala go'aya gaas oo baxsanaya, qaybta kalena waxay ku shubaysaa kookaha bituminous.
Mugga kookaha bituminous ee la soo saaray aad ayuu uga yar yahay kan bitumen-ka dhuxusha. Inkasta oo ay wax yar yarayso habka dubista, meelo badan oo aan caadi ahayn iyo kuwa yaryar oo leh cabbirro dalool kala duwan ayaa weli ku dhex jira alaabta.
Tusaale ahaan, wadarta porosity ee alaabta garaafyada guud ahaan waa ilaa 25-32%, iyo tan alaabta kaarboonku guud ahaan waa 16-25%.
Jiritaanka tiro badan oo daloolo ah ayaa si lama filaan ah u saameyn doona sifooyinka jireed iyo kiimikaad ee alaabta.
Guud ahaan, alaabta graphitized la porosity kordhay, hoos cufnaanta mugga, resistivity kordhay, xoogga farsamada, at heerkul gaar ah oo ka mid ah heerka oksaydhisku waa la dedejiyey, caabbinta daxalka ayaa sidoo kale sii xumaatay, gaaska iyo dareeraha si fudud u daadi.
Impregnation waa hab lagu yareeyo porosity-ka, kordhinta cufnaanta, kordhinta xoogga cadaadiska, yaraynta caabbinta alaabta la dhammeeyey, iyo beddelidda sifooyinka jireed iyo kiimikaad ee alaabta.
Ujeeddooyinkeeda waa:
(1) Hagaajinta kulaylka iyo korantada alaabta.
(2) Si loo hagaajiyo caabbinta shoogga kulaylka iyo xasiloonida kiimikada ee alaabta.
(3) Hagaajinta saliidda oo xidho caabbinta alaabta.
(4) Ka saar wasakhda oo wanaaji xoogga alaabta.
Alaabooyinka kaarboonka ee la cufiyey ee leh cabbir iyo qaab gaar ah ayaa leh heerar kala duwan oo qallafsan iyo dhaawac shil inta lagu jiro dubista iyo garaafka. Isla mar ahaantaana, wax-buuxiyeyaasha qaarkood waxay ku xidhan yihiin dusha sare ee alaabta kaarboonka ee la cufan.
Lama isticmaali karo la'aanteed farsamaynta farsamada, markaa badeecada waa in la qaabeeyaa oo loo habeeyaa qaab joomatari oo cayiman.
(2) Baahida isticmaalka
Marka loo eego shuruudaha isticmaalaha ee habaynta.
Haddii qalabka graphite ee birta foornada korontada loo baahan yahay in la isku xidho, waa in laga sameeyaa dalool dun leh oo ku yaal labada daraf ee alaabta, ka dibna labada korantada waa in lagu xidhaa si loogu isticmaalo isku-dhafka dunta gaarka ah.
(3) Shuruudaha tignoolajiyada
Alaabooyinka qaarkood waxay u baahan yihiin in loo habeeyo qaabab iyo tilmaamo gaar ah iyadoo loo eegayo baahida tignoolajiyada isticmaaleyaasha.
Xitaa qallafsanaanta dusha hoose ayaa loo baahan yahay.
Waqtiga boostada: Dec-10-2020