Tam sim no, domestic circulating fluidized txaj boiler hnav-resistant refractories feem ntau yuav muab faib ua peb pawg raws li lawv lub luag hauj lwm:
(1) hnav-resistant refractory cib, castables, plastics thiab mortar.
(2) Refractory bricks, castables thiab mortar.
(3) Refractory rwb thaiv tsev cov ntaub ntawv ntawm cib, castables thiab mortar.
Feem ntau siv ntau yam ntawm cov ntaub ntawv hnav-resistant refractory yog phosphate cib thiab castable, sillimanite cib thiab castable, silicon carbide cib thiab castable, corundum cib thiab castable, hnav-resistant refractory cib thiab castable, as Well as silicon nitride bonded silicon carbide khoom thiab lwm yam ntau yam.
1. Phosphate cib
Phosphate cib feem ntau yog siv nyob rau hauv thaj tsam ntawm 1200 ~ 1600 ° C thiab yog cov cib tsis raug rho tawm haujlwm uas tau kho cua sov ntawm qhov kub tsawg (500 ° C). Feem ntau ntawm cov ntaub ntawv tsim tawm thaum ntxov circulating fluidized txaj boilers yog phosphate cib thiab phosphate castables. Vim tias tsis muaj cov txheej txheem kub kub sintering, thiab vim tias lub tshuab nqus dej hauv lub txaj boiler ua haujlwm nyob rau hauv thaj tsam ntawm 850 ~ 900 degree, ntawm qhov kub no, lub cev lub cev ntawm cov refractory tsis ruaj khov, thiab hnav tsis kam tuaj yeem ua si tag nrho. Txawm hais tias cov khoom siv phosphate muaj nws qhov tsis zoo hauv kev siv cov khoom siv hluav taws xob hauv lub txaj, nws tus nqi tuaj yeem lees txais los ntawm ntau lub tuam txhab.
2 Silimanite
Sillimanite ntxiv rau lub refractory tuaj yeem ua rau cov khoom muag muag kub ntawm 100 ~ 150 degree, yog ib hom khoom siv raw khoom. Qhov kub ntawm qhov kev hloov ntawm cov refractory yog 1450 ~ 1600 degree, thiab sintering kub ntawm sillimanite cib ncav cuag qhov kub thiab txias, yog li sillimanite cib yog ib qho zoo tagnrho hnav-resistant refractory khoom ntawm CFB.
3. Silicon carbide khoom
Silicon carbide cov khoom muaj qhov hnav tsis kam thiab zoo thermal shock stability thaum siv nyob rau hauv qhov kub thiab txias tsis muaj pa oxygen, thiab tuaj yeem tsim cov txheej tiv thaiv glazed ntawm qhov chaw tom qab sintering ntawm ib qho kub. Muaj me me ntawm oxidizing cua nyob rau hauv combustion ntawm CFB boiler, yog li cov nyhuv siv tsis zoo.