Hom Thiab Yam ntxwv Ntawm Hnav-resistant Refractories Rau Circulating Fluidized txaj Boilers
Lub circulating fluidized txaj boiler muaj lub siab ua hauj lwm kub, thiab qhov kub thiab txias nyob rau hauv lub cub tawg hloov ntau zaus, ua rau thermal shock. Nyob rau tib lub sijhawm, muaj ntau cov khoom kub kub hauv lub cub tawg, uas tas li erode lub cua sov saum npoo, yog li nws yog ib qho tsim nyog los nteg cov ntaub ntawv hnav-resistant refractory rau kev tu. Hom thiab cov yam ntxwv ntawm hnav-resistant refractories rau circulating fluidized txaj boilers:
1.1 Hom hnav-resistant refractories
Taw qhia ntawm hnav-resistant refractories rau circulating fluidized txaj boiler
Hnav-resistant refractories tuaj yeem muab faib ua cov ntaub ntawv ruaj khov thiab cov khoom tsis ruaj raws li lawv cov khoom xa tuaj, thiab tuaj yeem muab faib ua: hnav-resistant refractories (xws li cib, castables, plastics, mortar) raws li lawv txoj haujlwm; cov ntaub ntawv refractory (xws li cib, castables, mortar); Refractory rwb thaiv tsev cov ntaub ntawv (xws li cib, castable thiab mortar).
Cov khoom sib xyaw
1) hnav-resistant refractory (nruj refractory): silica-aluminium cib (silica cib, refractory av nplaum ci, siab txhuas cib), zirconia-silicon cib, non-composite cib (carbon cib, silica-carbon cib), magnesia-calcium chromium cib thiab electrosoluble magnesium khoom qeb (magnesium cib, chrome-magnesium cib, chrome cib, dolomite cib).
2) Thermal rwb thaiv tsev cov ntaub ntawv: refractory thermal rwb thaiv tsev cib, thermal rwb thaiv tsev cib, thermal rwb thaiv tsev thaiv, ceramic fiber.
Amorphous khoom
Amorphous cov ntaub ntawv muaj xws li castable, plastering khoom, yas, kho khoom, tshuaj tsuag phom khoom, castable, vibrating cov ntaub ntawv, so ntaub, thiab lwm yam, yuav muab faib ua hmoov, av nkos, av nplaum.
1.2 Cov yam ntxwv ntawm cov khoom hnav-resistant refractory
Hnav-resistant refractory yog ib yam khoom tshwj xeeb uas tsis yooj yim puas thiab deformed ntawm qhov kub thiab txias. Txhawm rau kom tsis txhob muaj kev puas tsuaj los ntawm cov xuab zeb thiab ya tshauv, hnav cov ntaub ntawv tiv thaiv tau muab tso rau hauv qee qhov chaw puas yooj yim. Kev xaiv kom raug thiab kev teeb tsa ntawm cov khoom siv tiv thaiv no yog qhov tseem ceeb tshwj xeeb. Nws lav cov yam ntxwv mus sij hawm ntev ntawm lub kaw lus thiab txo qhov zaus ntawm cov khoom hnav-resistant shedding thiab tu.
Henan refractory cib manufacturers, refractory pob manufacturers, lub teeb rwb thaiv tsev cib, Sun Hung Kai Refractory Co., LTD
Cov tshuaj muaj pes tsawg leeg ntawm hnav-resistant refractories yog tsim los ntawm txhuas thiab silicon tebchaw, accounting rau 80% -95% ntawm tag nrho cov ntsiab lus.
Txhawm rau tiv thaiv ib puag ncig kev phom sij ntawm CFB boilers, hnav-resistant refractories yuav tsum muaj qee yam hluav taws kub, compressive zog, flexural zog, thermal shock kuj thiab ib tug me me txaus linear hloov tus nqi. Lub ntsiab lub cev thiab tshuaj indexes ntawm hnav-resistant refractories yog raws li nram no:
Ib qho Refractory
Refractoriness hais txog qhov muaj peev xwm ntawm cov khoom hnav-resistant refractory tiv thaiv melting ntawm qhov kub thiab txias yam tsis muaj kev quab yuam sab nraud. Refractoriness kuj feem ntau yog qhia los ntawm qhov kev pabcuam siab tshaj plaws, uas yog, qhov hloov pauv ntawm cov khoom siv tom qab 5h ntawm calcination tsis tshaj 1.5% ntawm qhov kub thiab txias.
B ntim ceev
Bulk density, tseem hu ua bulk density, yog hais txog qhov loj ntawm chav tsev ntim ntawm cov hnav-resistant refractory, uas tuaj yeem cuam tshuam qhov ntom ntawm refractory, chav tsev yog kg / m3.
C Thaum tshav kub kub hloov coefficient
Thaum tshav kub kub hloov coefficient yog hais txog lub tshav kub ntawm hnav-resistant refractories nyob rau hauv chav tsev kub gradient ib chav tsev lub sij hawm ib chav tsev ntsug, w / (MK). Lub tshav kub hloov pauv coefficient ntawm refractory tsis yog tsuas yog cuam tshuam rau nws txoj kev siv, tab sis kuj yog ib qho tseem ceeb uas cuam tshuam ncaj qha rau thermal shock stability ntawm cov khoom siv tes ua.
D Thermal shock stability
Thermal shock stability yog hais txog lub peev xwm ntawm cov khoom hnav-resistant refractory los tiv thaiv qhov kub hloov pauv yam tsis muaj kev puas tsuaj, tseem hu ua thermal shock resistance, kub hloov tsis kam thiab ceev cua txias thiab cua sov. Thaum siv cov khoom siv refractory, lawv feem ntau raug mob los ntawm kev hloov pauv ntawm kev ua haujlwm kub, ua rau tawg, poob tawm thiab txawm tias cov khoom tawg. Cov yam ntxwv cuam tshuam rau thermal shock stability xws li thermal deformation tus nqi, tshav kub hloov coefficient, cov khoom siv, cov khoom zoo li qub thiab particle muaj pes tsawg leeg.
Electronic Circuit Court hloov tus nqi
Qhov kev hloov pauv hloov pauv yog hais txog qhov sib piv ntawm qhov hloov pauv tsis hloov pauv ntawm qhov hloov pauv ntawm qhov ntev ntawm cov khoom siv tiv thaiv refractory ntawm chav tsev kub mus rau qhov qub ntev, qhia raws li feem pua, tseem hu ua linear expansion coefficient. Nws yog ib qho ntawm cov hauv paus rau kev tsim tag nrho ntawm cov ntaub ntawv refractory thiab kev npaj ntawm cov pob qij txha expansion.
Alpha=(L2 - L1)/L1
Qhov twg: L1 yog qhov ntev ntawm cov qauv ntawm chav tsev kub, mm; L2 yog qhov ntev ntawm cov qauv rhuab mus rau qhov ntsuas kub T, mm.
F Qhov kub thiab txias compressive zog thiab flexural zog
Compressive zog, feem ntau yog hais txog lub zog compressive ntawm chav tsev kub, yog qhov kawg siab uas hnav-resistant refractory cov ntaub ntawv tuaj yeem tiv taus ib cheeb tsam ntawm chav tsev kub. Yog tias tus nqi no dhau lawm, cov khoom yuav raug rhuav tshem. Lub calcination, melting lub xeev thiab cov khoom muaj feem xyuam rau cov qauv ntawm cov refractory yog qhov tseem ceeb manifestations ntawm nws compressive zog. Nws yog ib qho khoom siv rau kev sim cov ntaub ntawv hnav-resistant refractory, tseem hu ua txias nias lub zog. Kev suav txheej txheem ntawm compressive zog:
CCS= Cov cuab tam ruaj khov
Qhov twg: CCS yog compressive zog, chav tsev yog mpa; F yog qhov kawg siab uas cov khoom tuaj yeem tiv taus; a yog lub zog ntawm cov khoom.
Nyob rau hauv daim ntawv thov ntawm hnav-resistant refractories, ntxiv rau compressive kev nyuaj siab, tensile kev nyuaj siab, dabtsi yog khoov kev nyuaj siab thiab shear stress kuj raug. Lub zog flexural feem ntau yog hais txog lub zog flexural ntawm chav tsev kub, uas yog hais txog qhov kev ntxhov siab kawg ntawm cov qauv hauv qab khoov load ntawm chav tsev kub, thiab chav tsev yog MPa.
Lub zog compressive thiab flexural lub zog nyob ntawm seb hom thiab tus nqi ntawm flux thiab admixture, thiab tseem cuam tshuam los ntawm purity ntawm raw cov ntaub ntawv, qhov ratio, tag nrho cov nqi ntawm cov kua sib tov, txoj kev tsim kho thiab txoj kev kho.
G Hnav Index
Ib phaus ntawm quartz xuab zeb yog txau rau ntawm cov khoom hnav-tiv taus ntawm qee qhov ceev, thiab cov khoom hnav-tiv taus yog hu ua qhov hnyav-tiv taus, thiab chav tsev yog g / cm2. Comprehensive wear resistance index yog qhov ntsuas tseem ceeb los ntsuas qhov hnav tsis kam ntawm castable thiab cib.
Txhawm rau kom ua tau raws li kev ua haujlwm nyab xeeb ntawm chav tsev, qhov hnav-tiv taus refractories ntawm CFB boiler yuav tsum muaj cov yam ntxwv hauv qab no: qhov kub thiab txias tsis tu ncua; Tsawg hnav tus nqi; Zoo heev corrosion kuj; Zoo heev kub ntim stability.
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