Fiber njamndi ngam Castables Refractory: Ƴettugol ɓuuɓri, Toɓɓe e Shock Thermique

Ayaare

Ñalnde 15 lewru juko hitaande 2016

Fibre refractory e fibre structural ko geɗe ceertuɗe, gila e huunde teskinnde haa e mbaadi. Huutoraade fiɓnde structural hooked e nder castable ko fenaande ɓurnde heewde e ɓurnde yaajde e nder ndeeɗoo cate.

Fibre Refractory e Fibre Structural ko geɗe ceertuɗe

Jippinde fiɓnde structural hooked e nder castable refractory ko majjere ɓurnde heewde e ɓurnde yaajde e nder ndeeɗoo cate. Fiɓnde mbaydi ina toppitii hedde 300 haa 400 C ; dow oon doole ina njippoo, coftal ɓalli ina ustoo. Castables refractory ina ndoga e 800 haa 1400 C e lining kadi ina ƴetta nguleeki e cooyngal yaawngal. Fiber refractory ina seerti e geɗe, e mbaadi e mbaadi : base ko njamndi mboɗeeri, laawol ngol ko ƴettugol ɓuuɓol, mbaadi mum ko ɓuuɓri dimensiyoŋaaji tati ndi aldaa e njuɓɓudi. Faandaare ndee wonaa semmbe ɓuuɓɗo kono ko haɓaade oksidaasiyoŋ e duƴƴere e nguleeki tawa ina jokkondiri e castable.

Ittugol Melt: Ko waɗi sifaaji 3D ɗi ngonaa njuɓɓudi ina ɓuri moƴƴude

Ittugol ɓuuɓngol ina werta njamndi mboɗeeri ɓuuɓndi e henndu toowndu walla e wertallo ɓuuɓngo, ina cooyna ɗum haa wonta fiɓnde e nder diwgol. Alaa natal gonngal heen, ko ɗum waɗi mbaadi ndii ina ŋakki : ina ɓuuɓi, sahaa e sahaa fof ina ɓuuɓi, ina seerti e teddeendi. Ndeen ŋakkeende ko ko tagi jokkere enɗam goonganteere e nder castable e nokku ɗo jokkere enɗam laaɓtunde woni e jokkere enɗam. E nder jarribooji nannditooji, fiɓnde yaltinaande e ɓuuɓri ina ɓeyda modulus rupture no feewi ko ɓuri fiɓnde laaɓtunde e doseeji potɗi, sabaabu oo ko joometiri ankara. Dispersion ko nafoore ɗiɗmere : fiɓnde yaltinaande e ɓuuɓri ina seernda e ɓuuɓri walla ɓuuɓri, ina jokkondiri e castable tawa accaani ɓuuɓri, ɓuuɓri e nder lining ko ɗoon spalling fuɗɗotoo.

304, 310S e 446: Tempere ina felliti tolno

Toɓɓe tati ina njuɓɓina banngeeji tati nguleeki ko ɗum woni kuulal gadanal. 304 woni tolno tolno golle jokkondirɗe haa 650 C ; 310S, yeeyeteeɗo kadi ko 2520, ina sudda nguleeki hakkundeejo e toowki haa 1200 C ; 446 woni tolno oksidaasiyoŋ toowɗo mo nguleeki mum tolnii e 1400 C. Suɓo les toowɗo e fiɓnde oksidaasiyoŋ, majja taƴre e lining ina ŋakka ko yaawi ; suɓo toowɗo kadi njoɓdi ndii ina ustoo. Naamnal ngal wonaa ɓurngal mawnude e furnaange kono ko nguleeki juutki e laral ngal fiɓnde ndee jooɗii e mum ngal, lining ina jogii ƴulɓe, ina waɗi 1400 C e yeeso ngulngo, ma a taw 800 C e caggal mum, ko ɗuum waɗi laral ɗiɗmal ngal ina waawi huutoraade tolnooji ceertuɗi.

Sokkere nguleeki: Capanɗe ɗiɗi ndiyam ɓuuɓɗam gila 1000 C

Capanɗe jeetati e jeetati e nder teemedere (80%) e ŋakkeende refractory ɓuuɓnaaka kono ina diwta ɗum en e nguleeki e cooyngal jaawngal. Nafoore fiɓnde njamndi e nder soklaaji nguleeki ko nanngude mawnugol ɓuuɓri : caggal ɓuuɓri matriks, fiɓnde ndee ina ɓuuɓna ɓuuɓri ndii, ina jogoo njaajeendi mum tokosiri, ina haɗa ɓuuɓde. Feere ndee ko cirkooji, ɓuuɓɗi gila 1000 C e nder ndiyam, laabi capanɗe ɗiɗi tawa ɓuuɓnaaki walla ɓuuɓnaaki. Ndeen jarribo ina haala ko ɓuri heewde e nguurndam gollal ko modulus rupture, sibu uddugol ina yaawi coofde e nguleeki.

Doseeji ina njokki e Siistem Lining, wonaa Generik kg/m3

Beton gonɗo e mbaydi gollordu ina jogii 30 haa 80 kg/m3 ; kastabeluuji ɓuuɓɗi mbaɗataa. Doseeji ɗii fawii ko e limto aggregate, ɗaɓɓaande ndiyam, feere jokkondire (casting, ramming, gunning) e teddeendi lining, e ko ɓuri heewde ina fadi hakkunde 0,5% e 2% e njuuteendi. Ko heewi e golle ina ɓuuɓta, ekipaaji ɗii ɓeyda ndiyam, ndiyam ɓeydaɗam ina halka refractoriness. Ko ɗuum woni ŋakkeende ladde ɓurnde heewde e ooɗoo geɗel. Laawol laaɓtungol ko yo balloowo refractory yaltin design mix e fibre maker yaltin ko feewti e mum, kamɓe ɗiɗo fof ɓe ngollodoo e nanondiral karallaagal gootal.

Spalling Puccitiiɗo: Ko waɗi Fibre ina usta ɗum

E nguleeki adanki, ndiyam nder castable ina wayloo wonta aaludere, so tawii ina waawi daɗde e nguleeki ina fecca lining. Fiber njamndi ina wallita e rokkude laabi jokkondirɗi ngam ɓuuɓde e ɓuuɓnude ɓuuɓol ngol haa ngol udditoo seeɗa seeɗa, ngol wayla ɓuuɓol ngol e ɓuuɓol ngol. Wonande linings tedduɗi e castables low-cement ɓuuɓɗi ɗum ɓuri teeŋtude e dañal semmbe. Won e miijooji kadi ina ɓeyda heen fiɓnde organik jogiinde ɓuuɓri ɓadiiɗo 165 C, nde ɓuuɓnata ko yaawi, nde acca laabi ɓuuɓɗi, nde timmina fiɓnde njamndi ndee. Ko ɗum waɗi sifaaji fiɓnde ɗiɗi ina keewi feeñde e restoraa gooto refraktoor.

Winndannde 0,5 haa 2 e nder teemedere e nder Castables

Fiber njamndi ina naata e nder castable refractory ngam haɓaade thermal shock spalling, wonaa ngam ɓeydude semmbe nguleeki, ko ɗum waɗi windo doseeji ɗii ina pamɗi : 0,5 haa 2 e nder teemedere e njuuteendi, tawi ko ɓuri heewde e kuutorɗe ina ɓadii 1 e nder teemedere. Les 0,5 e nder teemedere ina famɗi no feewi fiɓnde e dow laana ndiwoowa ngam ɓuuɓnude ɗum. Ko ɓuri 2 e nder teemedere fiɓnde ndee ina naatna e nder jillondiral, gollal ina ɓuuɓta, diƴƴe ina ngadda laabi orientasiyoŋ ɗi accata diƴƴe leelɗe hakkunde laabi. Njuuteeki fiɓnde ina jokkondiri e mawneeki aggregate ɓurki mawnude, no woorunoo ko famɗi fof laabi tati oon mawneeki, so wonaa ɗuum aggregate ina haɗa fiɓnde ndee, alaa ko jokkondiri e mbaydiiji reso ; kono so ɓurii 40 mm fiɓnde ndee ina jooɗoo e sahaa diƴƴe. Jaɓɓungal jillondirde ina addana ŋakkeende ɓurnde doseeji. Yoor-ɓuuɓna ɓuuɓri ndii e fiɓnde ndee fotde hojomaaji ɗiɗi haa tati mbele fiɓnde ndee ina saɗta e nder ɓuuɓri ndii, caggal ɗuum ɓeydee heen ndiyam ; meeɗaa ɓeydude ndiyam ko adii e ɓuuɓnude fiɓnde caggal ɗuum, ɗuum sahaa fof balle. Kurkure yoornde ina felliti ko yaltata : jogaade 150 degere Celsius ngam riiwtude ndiyam mbelɗam, jogaade 350 ngam riiwtude ndiyam jokkondirɗam e kemikal, caggal ɗuum tan ƴeeŋta dow 600 haa nguleeki gollorde, tawa waktu e kala taƴre ina ustoo haa yettoo teddeendi. Nguleeki ina yaawi no feewi e ɓuuɓol ndernderiwol alaa ɗo yahrata, dowri ndii ina ɓuuɓtoo, ko ɗuum woni ko fiɓnde mode failure waawaa hisnude. Toɓɓere ina rewi e furnaange : 304 les 650 degere Celsius, 310S dow 1000, e 446 tan wonande nokkuuji furnaange hedde 1400.

Naamne tati potɗe naamneede e jom jawdi en

Naamne tati ina filtira ko ɓuri heewde e yeeyooɓe fiɓnde refractory. Ko adii fof, ko tolno 304, 310S walla 446, kadi ko seedantaagal kaɓirɗe ina woodi. Ɗiɗaɓere, hol ko woni njaajeendi e njuuteendi tigi rigi, ko ɓuri heewde ko 0,3 haa 0,5 mm njaajeendi e 15 haa 20 mm njuuteendi, kadi mbele ina mbaawi taƴeede haa njuuteendi laylaytol ngol. Tataɓol, mbele ina woodi dokke cirƴam nguleeki. Ngam limde tolnooji e nguleeki, taƴre refractory e hello peewnugol fiɓnde njamndi ina limta 304, 310S, 446 e 430 tawa ina waɗi dokke nguleeki e nguleeki, ɗe mbaawi jokkondirde e naamnal ngal to bannge karallaagal.