Features wa njerwa zopepuka za aluminiyamu

Njerwa zopepuka zokhala ndi aluminiyamu nthawi zambiri zimatchedwa njerwa zosungunulira zotenthetsera, zomwe zimatchedwanso njerwa zosungunulira zamafuta. Cholinga chake chofunikira ndikuteteza kutentha komanso ntchito yoteteza kutentha. Mu ntchito yachibadwa, si kugwirizana mwachindunji kutentha kwa ng’anjo, ndipo ndi mtundu wa mankhwala njerwa refractory pafupi ndi khoma ng’anjo ndipo ali ndi kutentha kutchinjiriza ndi kutentha kuteteza zotsatira.

Njerwa zopepuka za aluminiyamu ndi imodzi mwazinthu zoyenera zoletsa kutentha pakali pano. Ili ndi mawonekedwe amphamvu yopondereza kwambiri, kutsika kwamafuta otsika, magwiridwe antchito abwino, komanso mtengo wotsika. Zakhala zikugwiritsidwa ntchito kwambiri mu mitsuko ya ceramic tunnel kilns, ma roller kilns, ndi ma shuttle kilns. Mitundu ya ng’anjo, ng’anjo zapakhoma, imagwiritsidwanso ntchito m’ng’anjo zosiyanasiyana zotenthetsera, ng’anjo zophikira ndi zida zina zotenthetsera, zida zopangira kutentha mumakampani achitsulo ndi zitsulo.

Njerwa zopepuka za aluminiyamu zopepuka zimatchedwanso njerwa zotsekereza za aluminiyamu. Zinthu zopepuka zopepuka zokhala ndi aluminiyamu pamwamba pa 48%, makamaka zopangidwa ndi mullite ndi galasi gawo kapena corundum. Kuchulukana kwakukulu ndi 0.4 ~ 1.35g/cm3. The porosity ndi 66% ~73%, ndipo compressive mphamvu ndi 1 ~ 8MPa. Thermal shock resistance ndi bwino. Kawirikawiri, aluminiyamu yapamwamba ya bauxite clinker imawonjezeredwa ndi dongo laling’ono, itatha kudulidwa bwino, imatsanuliridwa ndi kuumbidwa ngati matope ndi njira yopangira mpweya kapena njira ya thovu, ndikuwotcha pa 1300-1500 ° C. Nthawi zina aluminiyamu yamafakitale angagwiritsidwe ntchito m’malo mwa bauxite clinker. Amagwiritsidwa ntchito popanga nsanjika ndi kutsekereza kutentha kwa ng’anjo zamiyala, komanso mbali zomwe sizinawonongeke komanso zowombedwa ndi zida zotentha zotentha kwambiri. Mukakumana ndi lawi lamoto, kutentha kwapamtunda sikuyenera kupitirira 1350 ° C.