Cov khoom siv rwb thaiv tsev thermal yog hais txog cov khoom siv rwb thaiv tsev thermal uas muaj porosity siab, qhov ceev tsawg, thiab kev ua haujlwm thermal qis, tseem hu ua cov khoom siv rwb thaiv tsev lightweight. Xws li cov khoom siv rwb thaiv tsev thermal, cov fibers refractory, thiab cov khoom siv fiber refractory. Raws li qhov kub thiab txias siv: cov khoom siv rwb thaiv tsev thermal qis, qhov kub thiab txias siv qis dua 900 ℃, xws li cov cib rwb thaiv tsev diatomite, cov khoom siv silica nthuav dav, silica calcium boards, cov khoom siv perlite nthuav dav, thiab lwm yam; cov khoom siv rwb thaiv tsev kub nruab nrab, qhov kub thiab txias siv 900 ~ 1200 ℃, xws li cov cib rwb thaiv tsev thermal av nplaum, txhuas silicate refractory fiber, thiab lwm yam; cov khoom siv rwb thaiv tsev thermal kub siab, qhov kub thiab txias siv ntau dua 1200 ℃, xws li cov cib rwb thaiv tsev thermal aluminium siab, cov cib rwb thaiv tsev thermal alumina, cov cib rwb thaiv tsev siliceous, cov cib rwb thaiv tsev siliceous, cov cib pob alumina hollow, zirconia hollow pob cib, cov fiber refractory siab alumina, polycrystalline refractory fiber (polycrystalline alumina fiber, polycrystalline zirconia fiber, polycrystalline mullite fiber), thiab lwm yam.
Kev tsim cov khoom siv hluav taws xob uas tiv taus cua sov feem ntau siv cov txheej txheem uas tuaj yeem tsim cov qauv porous, xws li cov khoom siv raw khoom sib dua, txoj kev hlawv tawm, txoj kev ua npuas ncauj, thiab txoj kev tshuaj lom neeg. Cov fiber refractory amorphous, xws li cov fiber refractory aluminium silicate, cov fiber refractory alumina siab, thiab lwm yam, feem ntau yog tsim los ntawm kev yaj. Cov fiber refractory polycrystalline, xws li mullite fibers, alumina fibers, thiab lwm yam, yog tsim los ntawm txoj kev colloid.
Cov yam ntxwv tseem ceeb ntawm cov khoom siv rwb thaiv tsev yog qhov porosity siab, feem ntau siab dua 45%; qhov ceev tsawg, feem ntau tsis tshaj 1.5g / cm3; kev ua kom sov qis, feem ntau tsawg dua 1.0W / (m · K). Feem ntau siv ua kev rwb thaiv tsev ntawm cov cub tawg kev lag luam, nws tsis tsuas yog txo qhov poob cua sov ntawm lub cub tawg, tab sis kuj txo qhov khaws cia cua sov ntawm lub cub tawg, tau txais qhov zoo tshaj plaws txuag hluav taws xob, thiab txo qhov hnyav ntawm cov khoom siv thermal. Piv nrog cov cib refractory dav dav, cov khoom siv rwb thaiv tsev kub muaj qhov tsis zoo ntawm slag corrosion, lub zog kho tshuab, thiab kev hnav tsis kam. Yog li ntawd, nws tsis haum rau cov qauv thauj khoom ntawm lub cub tawg thiab cov khoom uas nyob hauv kev sib cuag ncaj qha nrog slag, them, hlau yaj, thiab lwm yam.
Txoj kev faib tawm ntawm cov khoom siv rwb thaiv tsev refractory
Cov khoom siv rwb thaiv tsev thermal refractory yog cov khoom siv rwb thaiv tsev uas muaj qhov porosity tsawg kawg 45%. Cov yam ntxwv tseem ceeb ntawm cov khoom siv rwb thaiv tsev thermal refractory yog qhov porosity siab thiab qhov ntim tsawg. Cov thermal conductivity qis, lub peev xwm cua sov me me, thiab kev ua haujlwm rwb thaiv tsev thermal zoo. Nws yog cov khoom siv tiv thaiv cua sov thiab tiv taus cua sov. Nws tuaj yeem siv ua txheej rwb thaiv tsev thermal rau ntau yam khoom siv thermal, thiab qee qhov kuj tuaj yeem siv ua txheej ua haujlwm. Nws yog cov khoom siv txuag hluav taws xob rau kev tsim ntau yam cub tawg. Kev hloov cov khoom siv rwb thaiv tsev thermal rau cov khoom siv refractory dav dav ua cov khoom siv hauv tsev cub tawg tuaj yeem txo qhov khaws cia cua sov thiab kev poob cua sov los ntawm 40% txog 50%, tshwj xeeb tshaj yog rau cov khoom siv thermal tsis tu ncua.
Muaj ntau hom khoom rwb thaiv tsev thiab cov khoom siv refractory, uas feem ntau muab faib ua peb pawg raws li qhov kub thiab txias siv, qhov ceev ntawm cov khoom, thiab cov duab ntawm cov khoom.
(1) Faib raws li lub cev ceev. Cov uas muaj qhov ceev ntawm 0.4 ~ 1.3g / cm3 yog cov cib sib dua; cov uas muaj qhov ceev ntawm tsawg dua 0.4g / cm3 yog cov cib sib dua.
(2) Faib raws li qhov kub ua haujlwm. Siv qhov kub 600 ~ 900 ℃ rau cov khoom siv rwb thaiv tsev kub qis; 900 ~ 120 ℃ rau cov khoom siv rwb thaiv tsev kub nruab nrab; tshaj 1200 ℃ rau cov khoom siv rwb thaiv tsev kub siab.
(3) Faib raws li cov khoom zoo: ib qho yog cov cib ua los ntawm cov khoom siv hluav taws xob uas tsis sib xws, suav nrog av nplaum, alumina siab, silicon, thiab qee cov cib ua los ntawm cov khoom siv hluav taws xob uas tsis muaj oxide; qhov tod yog cov cib ua los ntawm cov khoom siv hluav taws xob uas tsis sib xws, xws li cov pob zeb ua los ntawm cov khoom siv hluav taws xob uas tsis sib xws.
Txoj kev tsim cov khoom siv hluav taws xob uas tiv taus cua sov txawv ntawm cov khoom siv dav dav. Muaj ntau txoj kev, feem ntau suav nrog txoj kev hlawv, txoj kev ua npuas ncauj, txoj kev siv tshuaj lom neeg, thiab txoj kev siv cov khoom siv uas muaj qhov dej nkag.
1) Txoj kev hlawv thiab ntxiv cov khoom siv. Kuj tseem hu ua txoj kev ntxiv cov khoom siv hluav taws xob. Ntxiv cov khoom siv hluav taws xob uas yooj yim hlawv, xws li thee, sawdust, thiab lwm yam, rau hauv cov av nkos ua cib kom cov khoom muaj qee qhov qhov tom qab hlawv.
2) Txoj kev ntub dej. Ntxiv cov tshuaj ua npuas ncauj, xws li xab npum rosin, thiab lwm yam rau hauv cov av nplaum rau kev ua cib, thiab ua kom nws ua npuas ncauj los ntawm txoj kev siv tshuab. Tom qab hlawv, cov khoom porous tau txais.
3) Txoj kev siv tshuaj lom neeg. Siv cov tshuaj lom neeg uas tuaj yeem tsim cov pa roj kom zoo, cov khoom uas muaj qhov ntxeem tau tau txais thaum lub sijhawm ua cov cib, feem ntau yog dolomite lossis periclase ntxiv rau gypsum, thiab sulfuric acid ua tus neeg sawv cev ua npuas dej.
4) Txoj kev siv cov khoom siv uas muaj qhov dej nkag. Siv cov av diatomaceous ntuj lossis cov av nplaum cuav ua npuas ncauj clinker, alumina lossis zirconia hollow spheres, thiab lwm yam khoom siv raw uas muaj qhov dej nkag los ua cov cib refractory sib dua.
Siv cov khoom siv rwb thaiv tsev uas muaj cov cua sov tsawg thiab muaj peev xwm cua sov me me ua cov khoom siv hauv lub cev cub tawg tuaj yeem txuag tau roj; txhim kho kev ua haujlwm ntawm cov khoom siv; nws kuj tseem tuaj yeem txo qhov hnyav ntawm lub cev cub tawg, ua kom yooj yim rau cov qauv cub tawg, txhim kho cov khoom zoo, thiab txo qhov kub thiab txias. Txhim kho cov xwm txheej ua haujlwm. Cov khoom siv rwb thaiv tsev feem ntau yog siv ua txheej rwb thaiv tsev kub, txheej txheej lossis txheej rwb thaiv tsev ntawm lub cub tawg.
1. Alumina rwb thaiv tsev refractory cib
Cov cib ua los ntawm alumina siv cov fused corundum, sintered alumina, thiab industrial alumina ua cov khoom siv tseem ceeb los ua cov khoom siv refractory uas muaj zog tiv taus acid thiab alkali huab cua thiab txo qis, thiab tiv taus thermal shock zoo. Nws tuaj yeem siv tau ntev hauv qab 1700 ℃. Nws cov txheej txheem tsim khoom siv ob hom kev ua npuas ncauj thiab txoj kev ntxiv incineration. Cov khoom tsim los ntawm txoj kev ua npuas ncauj muaj cov yam ntxwv ntawm cov qauv sib xws, kev ua haujlwm thermal qis, thiab kev ua haujlwm rwb thaiv tsev zoo.
Cov cib refractory alumina uas tiv taus cua sov yog lub teeb, muaj lub zog compressive siab, thermal conductivity qis, me me shrinkage tom qab rov hlawv, thiab zoo thermal shock tsis kam. Lawv tuaj yeem siv rau cov txheej rwb thaiv tsev kub ntawm cov khoom siv thermal kub siab lossis cov cub tawg uas cuam tshuam ncaj qha nrog cov nplaim taws. Thiab cov txheej ua haujlwm ntawm cov khoom siv thermal precision, tab sis nws tsis haum rau qhov chaw xeb uas kov ncaj qha rau cov kua cub tawg thiab cov slag molten. Nws kuj muaj kev ruaj khov siab dua thaum siv hauv huab cua txo qis. Qhov kub siv nyob ntawm qhov huv ntawm cov khoom, feem ntau txog 1650 ~ 1800 ° C. Saib Rooj 3-105 rau cov ntsuas lub cev thiab tshuaj lom neeg ntawm cov khoom zoo li no.
2. Cov cib ua los ntawm cov hlau txhuas uas tiv taus cua sov thiab kub heev
Cov cib refractory uas muaj cov txhuas siab yog cov khoom siv refractory uas muaj cov ntsiab lus tsawg kawg 48% ua los ntawm cov khoom siv raw tseem ceeb. Cov cib refractory uas muaj cov txhuas siab feem ntau yog ua los ntawm bauxite ua cov khoom siv raw, ua ke nrog av nplaum ua cov khoom siv raw, sib xyaw nrog cov khoom khi thiab sawdust. Txhawm rau txhim kho kev ua haujlwm ntawm cov khoom, ntxiv cov alumina, corundum, sillimanite, kyanite, thiab silica rau hauv kev lag luam. Cov hmoov zoo tuaj yeem ua rau cov khoom nrog ntau qhov sib txawv thiab qhov kub siab tshaj plaws. Feem ntau, qhov kub siv yog 1250 ~ 1350 ℃, thiab qee qhov tuaj yeem ncav cuag 1550 ℃.
Cov cib ua los ntawm cov khoom siv ua npuas ncauj uas muaj cov txhuas siab feem ntau yog tsim los ntawm txoj kev ua npuas ncauj, thiab qhov ntim ntawm cov khoom yog nruab nrab ntawm 0.4 ~ 1.0g / cm3, thiab nws kuj tseem tuaj yeem tsim los ntawm txoj kev ntxiv cov khoom siv hlawv. Cov ntsuas lub cev thiab tshuaj lom neeg ntawm cov cib ua los ntawm cov khoom siv ua los ntawm cov khoom siv ua los ntawm cov txhuas siab tau qhia hauv Rooj 3-106.
Cov cib refractory uas ua los ntawm cov txhuas siab tuaj yeem siv los tsim cov txheej rwb thaiv tsev thiab cov khoom uas tsis raug xeb thiab raug cov khoom siv kub heev. Thaum sib cuag ncaj qha nrog nplaim taws, qhov kub ntawm qhov chaw sib cuag ntawm cov cib refractory uas ua los ntawm cov txhuas siab yuav tsum tsis pub siab tshaj 1350 ℃. Cov cib refractory uas ua los ntawm cov txhuas siab tuaj yeem sib cuag ncaj qha nrog nplaim taws, thiab muaj cov yam ntxwv ntawm kev tiv taus kub siab, muaj zog siab, thiab txuag hluav taws xob zoo. Nws yog qhov tsim nyog rau kev siv rau hauv cov qhov cub pyrolysis, cov qhov cub cua sov, cov qhov cub ceramic roller, cov qhov cub hluav taws xob porcelain drawer, thiab ntau yam qhov cub tiv taus. Cov cib refractory corundum-mullite uas muaj Al2O3 cov ntsiab lus ntawm 82.4% tuaj yeem siv ua cov qhov cub hauv qab ntawm 1550 ° C.
3. Cov cib ua los ntawm av nplaum uas tiv thaiv tau hluav taws xob
Cov cib ua los ntawm av nplaum uas muaj cov khoom siv hluav taws xob rwb thaiv tsev yog cov khoom siv hluav taws xob rwb thaiv tsev uas muaj cov ntsiab lus Al2O3 txog 30%, ua los ntawm cov av nplaum ua cov khoom siv tseem ceeb, siv cov av nplaum, cov hlaws dai, thiab cov av nplaum clinker ua cov khoom siv raw, ntxiv cov khoom khi thiab sawdust. Thaum sib tov, sib tov, tsim, ziab, thiab hlawv, cov khoom muaj qhov ceev ntawm 0.3 ~ 1.5g / cm3 tuaj yeem tau txais, thiab qhov ntim ntau lawm suav txog ntau dua ib nrab ntawm cov cib ua los ntawm cov khoom siv hluav taws xob rwb thaiv tsev.
Cov txheej txheem tsim cov cib ua los ntawm av nplaum uas tiv taus cua sov feem ntau yog txoj kev ntxiv hluav taws nrog cov hlaws dai ntab, thiab txoj kev ua npuas ncauj kuj siv tau. Saib Rooj 3-107 rau cov ntsuas lub cev ntawm cov cib ua los ntawm av nplaum uas tiv taus cua sov.
Cov cib refractory uas ua los ntawm av nplaum muaj ntau yam kev siv. Lawv feem ntau siv rau hauv cov khoom siv thermal thiab cov cub tawg kev lag luam. Lawv tuaj yeem siv rau cov khoom uas tsis xeb thiab ntxuav los ntawm cov khoom siv molten kub siab. Qee qhov chaw uas kov ncaj qha nrog nplaim taws yog coated nrog ib txheej. Cov txheej refractory tuaj yeem txo qhov kev yaig los ntawm slag thiab cov hmoov av roj cua sov thiab txo qhov puas tsuaj. Qhov kub ua haujlwm ntawm cov khoom tsis tshaj qhov kub sim ntawm kab rov qab. Cov cib rwb thaiv tsev av nplaum yog ib hom khoom siv rwb thaiv tsev lub teeb nrog ntau lub qhov hws. Cov khoom siv no muaj porosity ntawm 30% txog 50%, thiab nws cov rwb thaiv tsev thermal tsis zoo, tab sis nws lub zog kho tshuab thiab kev tiv thaiv corrosion zoo.
4. Cov cib ua los ntawm silicone rwb thaiv tsev
Cov cib ua los ntawm silica uas tiv taus cua sov yog ua los ntawm silica ua cov khoom siv tseem ceeb, thiab cov khoom siv tiv taus cua sov uas muaj SiO2 tsawg dua 91%. Ntxiv nrog rau cov yam ntxwv ntawm kev rwb thaiv tsev, cov cib ua los ntawm silicon tseem khaws cov yam ntxwv ntawm cov cib silicon ntau heev. Qhov kub pib ntawm kev ua kom mos yog siab, thiab qhov ntim nthuav dav me ntsis thaum lub sijhawm ua kom sov, uas ua rau lub qhov cub ua haujlwm zoo dua.
Kev ua tau zoo ntawm GGR-1.20 qib ntawm siliceous cua sov-insulating refractory cib rau cov cub tawg kev lag luam teev nyob rau hauv Tuam Tshoj Metallurgical Kev Lag Luam Txheem YB386-1994, qhov ceev ntawm qhov ntau tsis ntau tshaj 1.2g / cm3, lub zog compressive ntawm chav tsev kub tsis tsawg dua 5MPa, thiab qhov kub pib ntawm softening nyob rau hauv load hauv qab 0.1MPa tsis tsawg dua 1520 ℃, SiO2 cov ntsiab lus tsis tsawg dua 91%.
Cov khoom no yog tsim rau hauv daim ntaub ntawm lub cub tawg lossis cov txheej rwb thaiv tsev kub uas tsis sib cuag ncaj qha nrog cov khoom siv kub siab thiab tsis raug rau cov pa roj corrosive. Qhov kub ua haujlwm ntawm masonry tsis tshaj 1550 ° C.
Cov cib ua los ntawm silica uas muaj cua sov thiab rwb thaiv tsev muaj teeb meem ntau dua rau tib neeg lub cev vim yog hmoov av silica, thiab cov txheej txheem nyuaj dua li cov av nplaum thiab cov cib ua los ntawm cov txhuas uas muaj cua sov thiab rwb thaiv tsev, thiab nws suav txog ib feem me me ntawm tag nrho cov khoom tsim tawm ntawm cov khoom siv rwb thaiv tsev.
5. Cov cib ua los ntawm diatomite rwb thaiv tsev
Diatomite thermal rwb thaiv tsev cib yog cov khoom siv rwb thaiv tsev thermal refractory ua los ntawm diatomite ua cov khoom siv tseem ceeb. Diatomite thermal rwb thaiv tsev cib muaj cov qhov me me kaw, porosity siab, kev ua haujlwm rwb thaiv tsev thermal zoo, tab sis lub zog kho tshuab qis, tshwj xeeb tshaj yog tom qab ntub, lub zog txo qis heev. Nws cov tshuaj lom neeg tseem ceeb yog SiO2, ua raws li Al2O3, nrog rau hlau thiab potassium. , Sodium, calcium, magnesium oxides thiab lwm yam impurities.
Cov ntsuas lub cev ntawm cov diatomite rwb thaiv tsev cib tau qhia nyob rau hauv Rooj 3-108. Cov khoom siv rwb thaiv tsev cib diatomite muaj qhov tsis kam cua sov, thiab qhov refractoriness tsuas yog li 1280 ℃, yog li qhov kub siv tsis siab. Nws tsuas yog siv tau rau hauv txheej rwb thaiv tsev hauv qab 900 ° C.
6. Cov khoom perlite nthuav dav
Cov khoom perlite nthuav dav yog cov khoom siv hluav taws xob uas ua los ntawm perlite ua lub ntsiab tseem ceeb. Cov khoom siv rwb thaiv tsev ua los ntawm cov perlite nthuav dav ua cov pob zeb sib xyaw thiab cov cement, dej iav, phosphate, thiab lwm yam, tom qab do, sib tov, tsim, ziab, ci lossis kho. Qhov ceev ntawm cov perlite nthuav dav yog qhov me me, feem ntau tsuas yog 40 ~ 120g / cm3; qhov refractoriness tsis siab, feem ntau 1280 ~ 1360 ° C. Qhov kub siab tshaj plaws ntawm cov khoom nrog cov binders sib txawv yog txawv, feem ntau qis dua 1000 ° C.
Cov khoom perlite nthuav dav tau muab faib ua 200, 250, 300 thiab 350kg / m34 pawg raws li qhov ceev ntawm cov khoom hauv tus qauv hauv tebchaws. Raws li hom cement siv, nws tau muab faib ua cov khoom perlite nthuav dav uas khi nrog cement, cov khoom perlite uas khi nrog dej iav, cov khoom perlite uas khi nrog phosphate, thiab cov khoom perlite uas khi nrog asphalt.
7. Cov khoom siv vermiculite nthuav dav
Cov khoom vermiculite nthuav dav yog cov khoom siv hluav taws xob uas tiv taus cua sov nrog cov vermiculite nthuav dav ua cov khoom siv tseem ceeb. Kev tsim cov khoom vermiculite nthuav dav yog raws li qee qhov loj me ntawm cov vermiculite nthuav dav ua cov khoom sib xyaw, ntxiv cov khoom sib xyaw thiab cov khoom sib khi, sib tov nrog dej hauv qee qhov sib piv, thiab tsim, ziab, ci lossis kho kom tsim cov khoom rwb thaiv tsev thermal. Cov khoom nrog cov khoom sib txawv, cov khoom sib xyaw, thiab cov khoom sib khi muaj qhov kub siab tshaj plaws sib txawv, thiab cov txheej rwb thaiv tsev cua sov hauv qab 1000 ° C feem ntau yog siv. Muaj ntau hom khoom vermiculite nthuav dav, uas feem ntau yog cais raws li hom khoom sib khi siv thiab hom khoom sib xyaw siv. Raws li tus neeg sawv cev khi, nws tuaj yeem faib ua cov khoom sib xyaw organic, cov khoom sib xyaw inorganic thiab cov khoom sib xyaw organic thiab inorganic composite khi. Raws li hom khoom sib xyaw siv, nws tuaj yeem faib ua cov khoom sib xyaw ib zaug, ntau cov khoom sib xyaw thiab cov khoom sib xyaw.
Cov vermiculite uas nthuav dav muaj cov thermal conductivity qis, lub zog qis, thiab tsis tuaj yeem tiv taus dej, yog li nws daim ntawv thov raug txwv heev. Thaum cov khoom siv cementing muaj zog siab siv los txuas cov vermiculite uas nthuav dav rau hauv cov khoom tiav, nws yuav muaj lub zog ntau dua li cov vermiculite uas nthuav dav thiab tuaj yeem tiv taus qhov hnyav ntau dua; thaum siv cov khoom siv cementing uas tsis muaj dej los txuas cov vermiculite uas nthuav dav ua ke, cov khoom tshwm sim muaj kev ua haujlwm tiv taus dej thiab tuaj yeem siv qhov twg muaj dej. Cov thermal conductivity ntawm cov binder feem ntau siab dua li ntawm cov vermiculite uas nthuav dav, yog li ntxiv cov binder ua rau cov pob zeb oyster nthuav dav muaj kev siv tshiab, Tab sis nws kuj txo cov nyhuv rwb thaiv tsev thermal ntawm cov vermiculite uas nthuav dav.
8. Lub rooj tsavxwm calcium silicon
Calcium silicate board yog ua los ntawm diatomaceous earth thiab lime ua cov khoom siv tseem ceeb, thiab cov khoom siv refractory uas ua los ntawm kev ntxiv cov fiber reinforcing kuj hu ua calcium silicate board thiab microporous calcium silicate board. Calcium silicate board muab faib ua ob pawg raws li nws cov khoom sib xyaw: ib qho yog calcium silicate board, cov tshuaj lom neeg ntawm CaO / SiO2 yog li 0.8, cov khoom siv minerals yog tobermorite (tobermorite, 5CaO · 6SiO2 · 5H2O); qhov tod tes yog Calcium hard silicate, cov tshuaj lom neeg ntawm CaO / SiO2 yog li 1.0, thiab cov khoom siv minerals yog calcium hard silicate.
Calcium silicate muaj cov yam ntxwv zoo xws li muaj peev xwm me me, muaj zog sib cais, thermal conductivity tsawg, yooj yim tsim, thiab poob qis. Qhov ceev ntawm calcium silicate board feem ntau teev nyob rau hauv ntiaj teb li tsis pub tshaj 220kg / m3, thiab qee qhov tau muab faib ua 33 hom tsis pub tshaj 220kg / m3, tsis pub tshaj 170kg / m3, thiab tsis pub tshaj 130kg / m3; Tuam Tshoj tau muab faib ua 33 hom tsis pub tshaj 240kg / cm3, tsis pub tshaj 220kg / cm3, tsis pub tshaj 170kg / cm3. Lub zog compressive yog siab tshaj 0.4MPa, lub zog flexural yog siab tshaj 0.2MPa; thermal conductivity (70 ℃ ± 5 ℃) yog 0.049 ~ 0.064W / (m·K) qhov kub ua haujlwm siab tshaj plaws, thiab torbe mullite yog 650 ℃, Calcium silicate hom yog 1000 ℃.
Cov calcium silicate board tuaj yeem raug txiav lossis ntsia hlau, thiab tuaj yeem ua rau hauv cov laug cam, cov thaiv lossis cov thawv. Nws tuaj yeem siv ua cov khoom siv rwb thaiv tsev rau cov kav dej thermal thiab cov cub tawg hauv kev lag luam hauv hluav taws xob, kev lag luam tshuaj lom neeg, metallurgy, nkoj, thiab lwm yam; hluav taws thiab cua sov rwb thaiv tsev ntawm cov tsev, cov cuab yeej thiab cov khoom siv, Nws kuj tuaj yeem siv rau txheej rwb thaiv tsev kub ntawm qhov cub qhuav kub thiab lub tsheb platform qhov av; ob sab ntawm calcium silicate board tuaj yeem nplaum nrog yas veneer, plywood, asbestos cement board, thiab lwm yam. Siv tau ua cov khoom siv rwb thaiv tsev kub. Feem ntau ntawm cov khoom siv rwb thaiv tsev thermal hauv ntiaj teb siv calcium silicate board, thiab qee lub tebchaws siv calcium silicate board rau rwb thaiv tsev thermal hauv kev lag luam suav txog 70% txog 80%.
9. Cov Cib Ua Los Ntawm Cov Khoom Uas ...
Cov cib Cenosphere yog cov khoom siv hluav taws xob uas ua los ntawm cov cenosphere ua cov khoom siv tseem ceeb. Thaum xyoo 1970, kuv lub tebchaws tau pib siv cov cenosphere uas yog cov tshauv ya los tsim cov cib uas ua los ntawm cov av nplaum uas ua los ntawm cov av nplaum. Vim yog cov txheej txheem yooj yim thiab cov peev txheej ntau, cov khoom zoo. Txij li xyoo 1980, txoj kev clinker uas muaj qhov porous lossis kev ntxiv cov cenosphere uas yog cov tshauv ya tau siv los tsim cov cib Cenosphere.
Cov cib cenosphere yog cov pob zeb hollow spheres ntawm aluminium silicate iav floated los ntawm cov tshauv ya los ntawm cov chaw tsim hluav taws xob thermal. Nws muaj qhov hnyav sib dua, phab ntsa nyias, hollow, du nto, thermal conductivity qis, kev ua haujlwm rwb thaiv tsev zoo, refractoriness siab, thiab lub zog compressive siab. Thiab lwm yam kev ua tau zoo. Siv cov yam ntxwv ntawm cenospheres, cov khoom siv refractory rwb thaiv tsev kub nrog kev ua haujlwm zoo heev ntawm kev khaws cia kub tuaj yeem tsim tau. Kev tsim cov cib cenosphere tuaj yeem tsim los ntawm txoj kev semi-qhuav, uas muaj cov txheej txheem yooj yim thiab tsis xav tau cov txheej txheem tiav.
Cov cib Cenosphere zoo dua li cov khoom siv rwb thaiv tsev nruab nrab uas twb muaj lawm hauv cov nqe lus ntawm lub zog kho tshuab, kev tiv taus kub siab, kev ua haujlwm thermal, thiab kev siv kev ua tau zoo, thiab zoo ib yam li cov fiber silicate. Cov khoom siv no siv dav hauv ntau lub qhov cub kub siab ntawm qhov kub ntawm 1200 ° C kom ua tiav lub hom phiaj ntawm kev txhim kho kev ua haujlwm thermal thiab txo kev siv hluav taws xob. Cov cib Cenosphere siv rau hauv cov qhov cub kub thiab cov khoom siv kub siab hauv metallurgy, tshuab, tshuaj lom neeg, roj av, cov ntaub ntawv tsim kho, kev lag luam lub teeb, hluav taws xob thiab lwm yam. Feem ntau, lawv tuaj yeem txuag hluav taws xob los ntawm 15% txog 40%. Nws yog ib hom tshiab zoo ntawm kev faib sib dua. Cov khoom siv thermal.
10. Lub cib ua los ntawm pob zeb
Ib lub cib alumina hollow sphere
Alumina hollow sphere cib yog ib yam khoom siv refractory uas muaj alumina hollow sphere ua cov khoom siv tseem ceeb. Cov cim qhia txog kev siv alumina hollow sphere cib yog: Al2O3 cov ntsiab lus tsis tsawg dua 98%, SiO2 cov ntsiab lus tsis ntau dua 0.5%, Fe2O3 cov ntsiab lus tsis ntau dua 0.2%, qhov ceev ntawm cov khoom yog 1.3 ~ 1.4g / cm3, qhov pom tseeb porosity yog 60% ~ 80%, Lub zog compressive tsis tsawg dua 9.8MPa, qhov kub ntawm kev ua kom mos (0.2MPa) tsis tsawg dua 1700 ℃, thiab qhov thermal conductivity yog 0.7 ~ 0.8W / (m · K).
Piv nrog rau cov khoom siv rwb thaiv tsev thermal thiab cov khoom siv refractory, alumina hollow sphere cib yog tus yam ntxwv los ntawm ntau qhov kaw pores hauv cov khoom. Yog li ntawd, nws muaj lub zog siab thiab cov qauv pore ruaj khov, qhov ceev tsawg thiab thermal conductivity qis. Nws yog siv rau qhov kub siab hauv qab 1800 ℃ industrial kiln linings, xws li cov kiln lining kub siab hauv refractory, electronics, thiab ceramic industries; thermal rwb thaiv tsev txheej rau cov khoom siv thermal kub siab, xws li gasification furnaces hauv petrochemical kev lag luam, roj furnaces, thee industrial reactors, Insulation cib rau induction furnaces hauv metallurgical kev lag luam.
B Zirconia hollow sphere cib
Zirconia hollow sphere cib yog cov khoom siv hluav taws xob uas ua los ntawm zirconia hollow spheres ua cov khoom siv tseem ceeb. Lub hauv paus siv lead ua ntawm cov cib no yog cubic zirconia (kwv yees li 70% txog 80% ntawm cov khoom siv hauv cov pob zeb), thiab nws cov kev ua tau zoo ib txwm muaj: Qhov refractoriness ntau dua 2400 ℃, qhov pom tseeb porosity yog 55% ~ 60%, qhov ntim ceev yog 2.5 ~ 3.0g / cm3, lub zog compressive tsis tsawg dua 4.9MPa, thiab cov thermal conductivity yog 0.23 ~ 0.35W / (m · K).
Cov zirconia hollow spheres yog cov khoom siv refractory uas tiv taus cua sov thiab muaj kev ua tau zoo heev. Qhov kub siab tshaj plaws rau kev siv yog 2200 ℃. Cov cib zirconia hollow sphere muaj lub zog kub siab thiab cov qauv pore ruaj khov, yog li lawv tuaj yeem siv tau zoo ntawm qhov kub siab ntawm 2200 ℃. Cov cib zirconia hollow muaj qhov ceev tsawg thiab cov thermal conductivity qis, uas tsis tsuas yog txo qhov poob cua sov xwb, tab sis kuj txo qhov khaws cia cua sov. Yog li ntawd, ua cov khoom siv kub siab uas kov ncaj qha rau nplaim taws hauv cov khoom siv thermal xws li metallurgy, roj av, kev lag luam tshuaj lom neeg, khoom siv hluav taws xob, thiab lwm yam, nws tuaj yeem txo qhov siv hluav taws xob thiab txo qhov hnyav ntawm lub cub tawg kub siab, thiab cov txiaj ntsig siv zoo.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-26-2021