Magnesia carbon njerwa ndi mtundu wa unburned carbon composite refractory, amene amapangidwa ndi magnesium oxide wa alkaline okusayidi ndi mkulu-kusungunuka-point (2800 ℃), ndi carbon zinthu ndi mkulu kusungunuka mfundo kuti n'kovuta kukokoloka ndi ng'anjo slag monga zopangira, ndipo anawonjezera mitundu yonse ya sanali oxides zowonjezera ndi carbon kumanga wothandizila. Njerwa ya kaboni ya Magnesia ili ndi mawonekedwe otsika kwambiri, kukana kukokoloka kwa slag, kukana kugwedezeka kwamafuta komanso kulimba kwapamwamba kwambiri. Monga mtundu wa zokanizira zophatikizika, njerwa zamoto wa magnesia zimagwiritsa ntchito kuwononga kwamphamvu kwa magnesia ndi kutenthetsa kwamphamvu komanso kutsika kwa kaboni bwino, zimatha kubweretsa vuto lalikulu la kukana kwa spalling kwa magnesia.
Magnesia carbon njerwa zigawo zikuluzikulu ndi magnesium okusayidi ndi carbon, amene magnesium okusayidi zili 60 ~ 90% ndi mpweya zili 10 ~ 40%. Zinthu zamtunduwu zimapangidwa ndi tinthu tating'ono tating'ono ta magnesia, zinthu za kaboni, phula, phula kapena utomoni monga zopangira kudzera pakuwotcha kwambiri. Chifukwa chake njerwa za kaboni za maginito zimakhala ndi kukana kwa slag corrosion, kukana kutenthedwa kwamafuta, matenthedwe amafuta ndi zina.
Malinga ndi kuzizira kusanganikirana njira ndi pawiri phula kumanga wothandizila amakhala ouma ndi kupeza mphamvu zofunika, motero kupanga isotropous vitric carbon. Njerwa za kaboni za Magnesia zimapangidwa ndi phula, zomwe zimakhala ndi kutentha kwapamwamba kwambiri chifukwa chopanga mawonekedwe a coke anisotropic graphitization mu phula carbonation process. Mpweya wamtundu woterewu suwonetsa thermoplasticity yomwe imatha kuchotsa kupsinjika kwakanthawi powombera mizere kapena kugwira ntchito.
Zinthu | MC8 | Chithunzi cha MC10 | Chithunzi cha MC12 | Chithunzi cha MC14 | MC18 | |
Kuwoneka porosity% ≤ | 5.0 | 4.0 | 4.0 | 3.0 | 3.0 | |
Kachulukidwe kachulukidwe g/cm3 ≥ | 3.00 | 3.00 | 2.98 | 2.95 | 2.92 | |
Cold Crushing Mphamvu MPa≥ | 50 | 40 | 40 | 35 | 35 | |
Chemical kapangidwe% | MgO ≥ | 84 | 82 | 76 | 76 | 72 |
C ≥ | 8 | 10 | 12 | 14 | 18 | |
Kugwiritsa ntchito | Ntchito zonse | Kukaniza kwa Corrosion | Kukaniza Kuwonongeka Kwambiri |
Njerwa za kaboni za Magnesia zimagwiritsidwa ntchito kwambiri popangira zosinthira, ng'anjo yamagetsi yamagetsi ndi ng'anjo yamagetsi yamagetsi yamagetsi, mzere wa slag wachitsulo ndi malo ena. komanso itha kugwiritsidwa ntchito ngati ng'anjo yoyambira ya okosijeni, mzere wa slag wa ng'anjo ya ladle ndi malo otentha a ng'anjo yamagetsi yamagetsi.
RS refractory fakitale monga mmodzi wa kutsogolera ng'anjo maginito mpweya wopanga njerwa, akhoza kupereka khalidwe njerwa magnesia mpweya makasitomala ndi akatswiri akatswiri, luso kupanga patsogolo ndi zabwino pamaso kugulitsa ndi pambuyo-kugulitsa utumiki. RS refractory fakitale yakhala ikugwira ntchito pa njerwa zamoto za maginito kwazaka zopitilira 20. Ngati muli ndi kufunikira kwa njerwa ya kaboni ya magnesia, tilankhule nafe kwaulere, malonda athu adzakuyankhani koyamba.