Kugawika kwa njerwa zopepuka zotchinjiriza pamoto pamagalasi 2

Nkhaniyi tipitiriza kufotokoza za gulu la njerwa zopepuka zamoto zowotchera magalasi.

3.Dongonjerwa yopepuka yoyaka moto. Ndi kutchinjiriza refractory mankhwala opangidwa kuchokera dongo refractory ndi Al2O3 zili 30% ~ 48%. Kupanga kwake kumatengera njira yowonjezera yowotcha ndi njira ya thovu. Dongo opepuka kutchinjiriza moto njerwa ndi osiyanasiyana ntchito, makamaka ntchito monga kutchinjiriza zipangizo refractory wa zigawo kutchinjiriza zosiyanasiyana kilns mafakitale kumene sakumana ndi zitsulo zosungunuka. Kutentha kwake kogwira ntchito ndi 1200 ~ 1400 ℃.
4. Aluminiyamu okusayidi kutchinjiriza njerwa. Chogulitsacho chimakhala ndi kukana kwambiri kwa moto komanso kukana kwamphamvu kwamafuta, ndipo chimagwiritsidwa ntchito ngati chiwongolero chapamwamba cha kutentha kwa ma kilns. Kutentha kwake kogwira ntchito ndi 1350-1500 ℃, ndi kutentha kwa zinthu zoyera kwambiri kumatha kufika 1650-1800 ℃. Ndizinthu zotchinjiriza zomwe zimapangidwa kuchokera ku zida zosakanikirana za corundum, sintered alumina, ndi alumina yamakampani.
5. Njerwa zopepuka za mullite. Kusungunula kwamafuta ndi zinthu zodzitchinjiriza zopangidwa kuchokera ku mullite monga zopangira zazikulu. Njerwa zotchinjiriza za Mullite zimakhala ndi kukana kutentha kwambiri, kulimba kwambiri, kutsika kwamafuta otsika, ndipo zimatha kukumana ndi malawi amoto, ndipo ndizoyenera kuyika zida zosiyanasiyana zamafakitale.
6. Aluminiyamu okusayidi dzenje mpira njerwa. Aluminiyamu okusayidi dzenje mpira njerwa zimagwiritsa ntchito nthawi yaitali pansi pa 1800 ℃. Ili ndi kukhazikika kwamankhwala abwino komanso kukana kwa dzimbiri pa kutentha kwambiri. Poyerekeza ndi njerwa zina zopepuka zotchinjiriza, njerwa za mpira wa alumina zili ndi kutentha kwakukulu kogwira ntchito, mphamvu zapamwamba, komanso kutsika kwamafuta. Kachulukidwe ake ndi 50% ~ 60% m'munsi kuposa wandiweyani refractory mankhwala zikuchokera chomwecho, ndipo akhoza kupirira zotsatira za lawi lamoto.