Njerwa zopinga kutentha kwambiri za Kilns, ng'anjo

Malinga ndi magawo osiyanasiyana a njerwa zowumbidwa, zitha kugawidwa m'magulu asanu, omwe ndi: njerwa za silicon-aluminium mndandanda wa njerwa, njerwa zowumbidwa zamchere zamchere, njerwa zokhala ndi mpweya, njerwa zopangira zirconium, ndi njerwa zotchingira kutentha.

Ng'anjo iliyonse simamangidwa ndi njerwa zamtundu umodzi wokha, imafunika kuphatikiza njerwa zotsutsana.

(1) Njerwa za silika zimatanthawuza njerwa zomangira zomwe zili ndi zoposa 93% SiO2, zomwe ndi mitundu ikuluikulu ya njerwa zokana asidi.Amagwiritsidwa ntchito kwambiri popangira ma coke mavuni amiyala, komanso m'malo osungiramo zinthu zakale ndi mbali zina zonyamula katundu zamagalasi osiyanasiyana, ma ceramics, ma calciners a carbon, ndi njerwa zowuma.Amagwiritsidwa ntchito pazida zotentha pansi pa 600 ° C komanso kusinthasintha kwakukulu kwa kutentha.

(2) Njerwa zadongo.Njerwa zadongo zimapangidwa makamaka ndi mullite (25% mpaka 50%), gawo lagalasi (25% mpaka 60%), ndi cristobalite ndi quartz (mpaka 30%).Nthawi zambiri, dongo lolimba limagwiritsidwa ntchito ngati zopangira, clinker ndi calcined pasadakhale ndikusakaniza ndi dongo lofewa.Galasi lamadzi laling'ono, simenti, ndi zomangira zina zitha kuwonjezeredwa kuti mupange zinthu zomwe sizinawotchedwe ndi zinthu zosaumbika.Ndi njerwa yomwe imagwiritsidwa ntchito kwambiri m'ng'anjo zophulitsa, mbaula zoyaka moto, ng'anjo zotenthetsera, ma boiler amagetsi, mikuni ya laimu, ng'anjo zozungulira, zoumba, ndi ng'anjo zoyatsira njerwa.
(3) Njerwa zomangira aluminiyamu kwambiri.Kuphatikizika kwa mchere wa njerwa za aluminiyayi yapamwamba kwambiri ndi corundum, mullite, ndi magawo agalasi.Zida zopangira ndi aluminiyamu wapamwamba kwambiri ndi miyala yachilengedwe ya sillimanite, komanso palinso corundum, sintered alumina, synthetic mullite, ndi clinker calcined ndi alumina ndi dongo mosiyanasiyana.Amapangidwa kwambiri ndi njira ya sintering.Koma zopangidwazo zimaphatikizanso njerwa zophatikizika, njerwa zosakanizidwa, njerwa zosawotchedwa, ndi njerwa zosabowoka.Njerwa zapamwamba za alumina zimagwiritsidwa ntchito kwambiri m'makampani achitsulo ndi zitsulo, mafakitale osagwiritsa ntchito zitsulo, ndi mafakitale ena.(4) Njerwa za Corundum refractory, njerwa za corundum zimatanthawuza mtundu wa njerwa zowonongeka zomwe zili ndi AL2O3 zosachepera 90% ndi corundum monga gawo lalikulu, lomwe lingathe kugawidwa mu njerwa za sintered corundum ndi njerwa zosakanikirana za corundum (5) High- njerwa za aluminiyamu zoteteza kutentha zopepuka zopepuka.Ndi njerwa yotchinga yotchinga kuwala yokhala ndi bauxite monga gawo lalikulu la AL2O3 zosachepera 48%.Njira yopangira imagwiritsa ntchito njira ya thovu, ndipo njira yowonjezera yowotcha imatha kugwiritsidwanso ntchito.Njerwa za aluminiyamu zoteteza kutentha zopepuka zopepuka zitha kugwiritsidwa ntchito pomanga zigawo zotchingira kutentha ndi malo omwe kulibe kukokoloka kwa zinthu zosungunuka ndi kukwapula.Mukakumana ndi lawi lamoto, kutentha kwapamwamba kwambiri kwa aluminiyamu yotchinga kutentha kwa njerwa sikuyenera kupitirira 1350 ℃.Njerwa za Mullite zoteteza kutentha zimatha kulumikizana mwachindunji ndi lawi lamoto ndikukhala ndi mikhalidwe yokana kutentha kwambiri, mphamvu yayikulu, komanso mphamvu yopulumutsa mphamvu.Ndi yoyenera kuyatsa ng'anjo ya pyrolysis, ng'anjo yotentha yotentha, ng'anjo ya ceramic roller, ng'anjo yamagetsi ya porcelain yamagetsi, ndi ng'anjo zosiyanasiyana zotsutsana.(6) Njerwa zadongo zoteteza kutentha kwa dongo ndi njerwa zotchingira kutentha zomwe zimakhala ndi AL2O3 zokhala ndi 30% mpaka 48% zopangidwa ndi dongo losasunthika ngati zopangira zazikulu.Kapangidwe kake kamagwiritsa ntchito njira yowotcha komanso mawonekedwe a thovu.Pogwiritsa ntchito dongo losasunthika, mikanda yoyandama, ndi clinker yadongo ngati zopangira, kuwonjezera zomangira ndi utuchi, kudzera pa batching, kusakaniza, kuumba, kuyanika, ndi kuwombera, mankhwalawa amapezedwa mochulukirachulukira wa 0.3 mpaka 1.5g/cm3.The linanena bungwe dongo kutentha-kuteteza njerwa nkhani zoposa theka la okwana linanena bungwe kutentha-kuteteza refractory njerwa.