Njerwa Yotetezera Dongo Yopepuka imapangidwa ndi dongo lopaka moto ngati zinthu zopangira ndi dongo la pulasitiki ngati chinthu chomangirira kenako ndikuwonjezera chinthu choyenera kuyaka kapena chotulutsa thovu kudzera mu kuwombera. Choteteza dongo chimatseka ma porosity owoneka bwino ndi pafupifupi 40 ~ 85% ndipo kuchuluka kwake ndi kotsika kuposa 1.5 g / cm3. Njerwa zotetezera dongo zimagwiritsidwa ntchito makamaka ngati zinthu zotetezera kutentha mu uvuni wamafakitale kuti muchepetse kutaya kutentha kwa uvuni, kusunga mphamvu ndikuchepetsa ubwino wa zida zotenthetsera.
Njerwa Zotetezera Dongo Zopepuka zimapangidwa kuchokera ku dongo lopaka moto loyera kwambiri komanso chomangira, pozitentha kwambiri. Mabuloko oteteza dongo ndi njerwa zotetezera zotsika mtengo zomwe zimakhala ndi magwiridwe antchito apamwamba. Ubwino waukulu wa boloko lotetezera dongo ndi kulimba kwambiri pansi pa katundu, ma coefficients otsika kukula, kukana kutentha bwino komanso kuthekera kolimba kokana kukokoloka. Chopangidwa ndi zipangizo zapamwamba zadongo lopaka moto pansi pa kutentha kwakukulu malinga ndi muyezo wadziko lonse, womwe uli ndi kuchuluka kofanana, mphamvu yayikulu, kutentha kochepa komanso kuipitsidwa kochepa.
Dongo loteteza moto ndi chinthu chopangidwa ndi dongo lofewa la 50% ndi 50% chamotte yolimba malinga ndi kuchuluka kwina komwe kumafunika kusakanikirana ndikuwotchedwa kutentha kwa 1300 ~ 1400 ℃ mutapanga ndi kuumitsa. Dongo loteteza moto ndi njerwa zazikulu zomwe zimapangidwa ndi mchere zimaphatikizapo kaolinite (Al2O3 · 2SiO2 · 2H2O) ndi 6 ~ 7% zonyansa (K, Na, Ca, Ti, Fe oxide).
| Zinthu | NG-0.6 | NG-0.8 | NG-1.0 | NG-1.3 | NG-1.5 | |
| Kutentha Kwambiri kwa Utumiki | 1200 | 1280 | 1300 | 1350 | 1400 | |
| Kuchuluka Kwambiri, g/cm3 | 0.6 | 0.8 | 1.0 | 1.3 | 1.5 | |
| Kuoneka kwa Porosity, % | 70 | 60 | 55 | 50 | 40 | |
| Mphamvu Yopondereza Yozizira (Mpa) ≥ | 2.0 | 2.5 | 3.0 | 4.0 | 6.0 | |
| Kukonzanso Kusintha kwa Linear (%)℃ × 12h ≤ | 1300℃ -0.5 | 1350℃ -0.5 | 1350℃ -0.9 | 1350℃ -0.9 | 1350℃ -0.9 | |
| Kutentha kwa mpweya W/(m·K) | 600℃ | 0.16 | 0.45 | 0.43 | 0.61 | 0.71 |
| 800℃ | 0.18 | 0.50 | 0.44 | 0.67 | 0.77 | |
| Al2O3 | 40 | 40 | 40 | 40 | 42 | |
| SiO2 | 1.5 | 1.5 | 1.5 | 2 | 2 | |
| Fe2O3 | 55 | 55 | 55 | 55 | 55 | |
Chotchingira dongo chimagwiritsidwa ntchito makamaka potchingira malo otentha kapena zigawo zina zotchingira kutentha. Zipinda zotchingira kutentha kapena zipangizo zotchingira kutentha za mafakitale, monga, ng'anjo za ethylene pyrolysis, ng'anjo za tubular, ng'anjo zosinthira za ammonia yopangidwa, majenereta a gasi ndi ma kilns a shullte otentha kwambiri, ndi zina zotero.