Pali mitundu yambiri ya njerwa zomangira:

(1) Malinga ndi mlingo wa refractoriness, akhoza kugawidwa mu: wamba refractory njerwa mankhwala (1580 ~ 1770 ℃), patsogolo mankhwala refractory (1770 ~ 2000 ℃) ndi mankhwala apadera refractory (pamwamba 2000 ℃)

(2) Malingana ndi mawonekedwe ndi kukula kwake, zikhoza kugawidwa kukhala: mtundu wokhazikika, njerwa zooneka bwino, njerwa zapadera, njerwa zazikulu zooneka ngati zapadera, ndi zinthu zapadera monga ma laboratory ndi mafakitale crucibles, mbale, machubu.

(3) Malinga ndi ndondomeko akamaumba, zikhoza kugawidwa m’magulu: slurry kuponyera mankhwala, pulasitiki kuumbidwa mankhwala, theka-youma mbamuikha mankhwala, tamped kuumbidwa mankhwala kuchokera ufa sanali pulasitiki matope, mankhwala kuponyedwa ku zipangizo sungunuka, etc.

(4) Malinga ndi mchere mankhwala, akhoza kugawidwa mu: zipangizo siliceous, zotayidwa silicate zipangizo, zipangizo magnesia, zipangizo dolomite, chromium zipangizo, carbon, zipangizo zirconium, ndi zipangizo refractory wapadera.

(5) Malinga ndi mawonekedwe amankhwala, amatha kugawidwa kukhala: njerwa za acidic, zandale komanso zamchere.

(6) Malinga ndi cholinga, amagawidwa mu: njerwa refractory makampani zitsulo, njerwa refractory makampani simenti, refractory njerwa makampani galasi, refractory njerwa kwa makampani sanali achitsulo, njerwa refractory makampani mphamvu, etc.

(7) Malinga ndi kupanga njerwa refractory, akhoza kugawidwa mu: kupanga sintered, magetsi maphatikizidwe kupanga, precast kuponyera kupanga, CHIKWANGWANI lopinda kupanga, etc.