Qhov ntom ntom ntawm cov khoom siv calcium silicate yog kwv yees li 100-2000kg / m3.Cov khoom sib sib zog nqus yog tsim rau siv los ua cov rwb thaiv tsev lossis cov khoom ntim;cov khoom uas muaj qhov nruab nrab ntom ntom (400-1000kg / m3) yog siv los ua cov ntaub ntawv phab ntsa thiab cov ntaub ntawv npog refractory;cov khoom uas muaj qhov ntom ntawm 1000kg / m3 thiab siab dua yog siv los ua cov ntaub ntawv phab ntsa, Siv cov ntaub ntawv hauv av lossis cov ntaub ntawv insulating.Lub thermal conductivity feem ntau yog nyob ntawm qhov ntom ntawm cov khoom, thiab nws nce nrog qhov nce ntawm qhov kub thiab txias.Calcium silicate cov khoom muaj cua sov zoo thiab thermal stability, thiab hluav taws kub tsis kam.Nws yog cov khoom siv uas tsis yog-combustible (GB 8624-1997) thiab yuav tsis tsim cov pa phem lossis pa luam yeeb txawm tias kub.Hauv kev tsim kho cov haujlwm, calcium silicate yog dav siv los ua cov khoom siv refractory npog rau steel qauv kab teeb, kab thiab phab ntsa.Calcium silicate refractory board tuaj yeem siv los ua phab ntsa saum npoo, tshem tawm qab nthab thiab cov khoom siv kho kom zoo nkauj sab hauv thiab sab nrauv hauv cov tsev zoo tib yam, cov chaw tsim khoom thiab lwm lub tsev thiab cov tsev hauv av nrog cov ntaub ntawv pov thawj hluav taws.
Microporous calcium silicate yog ib hom thermal rwb thaiv tsev ua los ntawm cov ntaub ntawv siliceous, cov ntaub ntawv calcium, inorganic fiber reinforced cov ntaub ntawv thiab cov dej ntau tom qab sib tov, cua sov, gelation, molding, autoclave curing, ziab thiab lwm yam txheej txheem.Cov khoom siv rwb thaiv tsev, nws cov khoom tseem ceeb yog hydrated silicic acid thiab calcium.Raws li cov khoom sib txawv hydration ntawm cov khoom, feem ntau nws tuaj yeem muab faib ua hom tobe mullite thiab xonotlite hom.Vim yog cov khoom sib txawv ntawm cov khoom siv raw, kev sib xyaw sib xyaw thiab kev ua haujlwm siv rau hauv lawv, lub cev thiab tshuaj lom neeg cov khoom ntawm calcium silicate hydrate tsim kuj txawv.
Muaj ob hom sib txawv ntawm silicon derivation siv lead ua cov khoom siv los ua cov ntaub ntawv rwb thaiv tsev.Ib qho yog hom torbe mullite, nws cov khoom tseem ceeb yog 5Ca0.6Si02.5H2 0, kub-resistant kub yog 650 ℃;lwm yam yog hom xonotlite, nws lub ntsiab tivthaiv yog 6Ca0.6Si02.H20, kub-resistant Qhov kub tuaj yeem siab txog 1000 ° C.
Microporous calcium ntxig cov khoom muaj qhov zoo ntawm lub teeb ceev, siab thermal conductivity, siab siv kub, thiab hluav taws kub tsis zoo, thiab kev ua haujlwm zoo.Nws yog ib yam ntawm cov khoom thaiv hluav taws xob rwb thaiv tsev nrog kev ua tau zoo dua.Nws yog ib qho ntawm cov khoom siv thermal rwb thaiv tsev ntau tshaj plaws hauv kev lag luam txawv teb chaws, thiab ntau cov khoom tsim thiab siv hauv Suav teb.
Silica cov ntaub ntawv yog cov ntaub ntawv nrog silicon dioxide ua lub ntsiab tivthaiv, uas muaj peev xwm hnov mob nrog calcium hydroxide nyob rau hauv tej yam kev mob los tsim ib tug cementitious mas muaj li ntawm calcium silicate hydrate;cov khoom siv calcium yog cov khoom siv nrog calcium oxide ua cov khoom tseem ceeb.Tom qab hydration, nws tuaj yeem hnov mob nrog silica los tsim cov cementitious feem ntau hydrated calcium silicate.Hauv kev tsim cov microporous calcium silicate rwb thaiv tsev cov ntaub ntawv, siliceous raw cov ntaub ntawv feem ntau siv diatomaceous ntiaj teb, zoo heev quartz hmoov kuj siv tau, thiab bentonite kuj siv tau;cov khoom siv calcium uas feem ntau siv cov txiv qaub slurry thiab slaked txiv qaub uas tau zom los ntawm cov pob txiv qaub Powder los yog txiv qaub muab tshuaj, cov khoom siv khib nyiab xws li calcium carbide slag, thiab lwm yam tuaj yeem siv tau;Asbestos fibers feem ntau yog siv los ua cov fibers reinforcing.Nyob rau hauv xyoo tas los no, lwm cov fibers xws li alkali-resistant iav fibers thiab organic sulfuric acid fibers (xws li cov ntawv fibers) tau siv los txhim kho;Lub ntsiab additives siv nyob rau hauv cov txheej txheem yog dej: iav, soda tshauv, txhuas sulfate thiab thiaj li nyob.
Cov khoom siv raw piv rau kev tsim cov calcium silicate feem ntau: CaO / Si02 = O.8-1.O, txhawb fibers account rau 3% -15% ntawm tag nrho cov nyiaj ntawm silicon thiab calcium cov ntaub ntawv, additives account rau 5%-lo y6, thiab dej 550% -850%.Thaum tsim cov tobe mullite-hom microporous calcium silicate rwb thaiv tsev cov ntaub ntawv nrog lub tshav kub-resistant kub ntawm 650 ℃, lub vapor siab feem ntau yog o.8 ~ 1.1MPa, chav tuav yog 10h.Thaum tsim cov xonotlite-hom microporous calcium silicate cov khoom uas muaj kub-resistant kub ntawm 1000 ° C, raw cov ntaub ntawv uas muaj siab purity yuav tsum tau xaiv los ua CaO/Si02 = 1.O, lub vapor siab ncav cuag 1.5MPa, thiab lub sij hawm tuav mus txog ntau tshaj 20h, ces xonotlite-hom calcium silicate hydrate crystals tuaj yeem tsim.
Calcium silicate board cov yam ntxwv thiab kev siv ntau yam
Microporous calcium silicate thermal rwb thaiv tsev cov khoom siv feem ntau muaj cov yam ntxwv hauv qab no: kev siv kub yog siab, thiab kev siv kub tuaj yeem ncav cuag 650 ° C (I hom) lossis 1000 ° C (hom II) feem;②Cov ntaub ntawv raw siv yog txhua yam Nws yog cov khoom siv tsis muaj tshuaj lom uas tsis hlawv, thiab belongs rau Class A cov khoom tsis-combustible (GB 8624-1997).Nws yuav tsis tsim cov pa phem txawm tias thaum hluav taws tshwm sim, uas yog qhov zoo heev rau kev nyab xeeb hluav taws;③ Tsawg thermal conductivity thiab zoo rwb thaiv tsev nyhuv ④ Tsawg bulk ntom, siab zog, yooj yim rau txheej txheem, tuaj yeem sawed thiab txiav, yooj yim rau kev tsim kho ntawm qhov chaw;⑤ dej tsis kam, tsis muaj decomposition thiab puas hauv dej kub;⑥ Tsis yooj yim rau hnub nyoog, lub neej ua haujlwm ntev;⑦ Soak nws nyob rau hauv dej, qhov tshwm sim aqueous tov yog nruab nrab los yog tsis muaj zog alkaline, yog li nws yuav tsis corrode cov khoom los yog pipelines;⑧ Cov khoom siv raw khoom yooj yim kom tau txais thiab tus nqi pheej yig.
Vim hais tias cov khoom siv microporous calcium silicate muaj cov yam ntxwv saum toj no, tshwj xeeb tshaj yog nws cov rwb thaiv tsev kub zoo, kub tsis kam, tsis muaj hluav taws xob, thiab tsis muaj cov pa phem tso tawm, nws tau siv dav hauv cov phiaj xwm kev tiv thaiv hluav taws.Tam sim no, nws tau siv dav hauv ntau yam lag luam xws li metallurgy, tshuaj lom neeg kev lag luam, hluav taws xob fais fab, nkoj tsim, kev tsim kho, thiab lwm yam. Nws yog siv los ua cov khoom siv thermal rwb thaiv tsev rau ntau yam khoom siv, cov kav dej thiab cov khoom siv, thiab nws kuj muaj kev tiv thaiv hluav taws. muaj nuj nqi.
Post lub sij hawm: Dec-02-2021
