Njerwa za Magnesia zimakhala ndi 90% ya magnesium oxide ndipo zimatengera periclase ngati gawo lalikulu la crystalline. Njerwa za Magnesite zitha kugawidwa m'magulu awiri a Brint Magnesia Brick ndi Chemical Bonded Magnesite Brick. Njerwa za maginito zimakhala ndi ntchito yabwino kwambiri yamphamvu yamakina apamwamba kwambiri komanso kukhazikika kwa voliyumu. Ndipo amatha kutumikira kutentha kwambiri kwa 1750 ℃, njerwa za Magnesite ndizinthu zabwino zopangira ng'anjo yamagalasi.
Katundu wa Magnesia Njerwa
- High refractorines,
- Kukana kwa alkaline slag,
- Kukana kukokoloka kwa nthaka komanso anti-oxidation yabwino kwambiri,
- High refractoriness pansi pa katundu,
- Mphamvu zamakina apamwamba,
- Kukhazikika kwa Volume pa kutentha kwakukulu.
Magnesia Njerwa Kupanga Njira
Njerwa za Magnesia zitha kugawidwa m'mitundu iwiri: njerwa zopsereza za maginito ndi njerwa zopangidwa ndi mankhwala. Njerwa zopsereza za maginito amapangidwa kuchokera ku periclase, atawotchedwa ndi kutentha kwa 1550 ~ 1600 ℃ kudzera kuphwanya, kusakaniza, kusungunuka ndi kuumba. Zinthu zoyera kwambiri zimakhala ndi kutentha kopitilira 1750 ℃. Njerwa yosapsa ya maginito imapangidwa ndikuwonjezera mankhwala oyenera kudzera mu kusungunuka, kuumba ndi kuyanika.
Magulu a Magnesia Njerwa
Chifukwa cha mankhwala osiyanasiyana a njerwa za magnesia, zomwe zingathe kugawidwa m'mitundu yosiyanasiyana, ndipo njerwa zonsezi zimapangidwa ndi sintering. Kutengera ndi zida zosiyanasiyana, njerwa za magnesia zitha kugawidwa m'magulu awa:
Njerwa wamba wamba: mwala wa sintered magnesite.
Direct bond magnesia njerwa: high chiyero sintered maginito.
Njerwa ya Forsterite: peridotite
Njerwa ya Magnesia calcia: maginito a sintered okhala ndi calcium yochuluka.
Njerwa ya silika ya Magnesia: mwala wapamwamba wa silicon sintered magnesite.
Njerwa ya Magnesia chrome: maginito a sintered ndi ore ena a chrome.
Magnesia alumina njerwa: sintered magnesite mwala ndi Al2O3.
Mafotokozedwe a Njerwa za Rongsheng Refractory Magnesia
| Zinthu | Makhalidwe akuthupi ndi Chemical | ||||||
| M-98 | M-97A | M-97B | M-95A | M-95B | M-97 | M-89 | |
| MgO% ≥ | 97.5 | 97.0 | 96.5 | 95.0 | 94.5 | 91.0 | 89.0 |
| SiO2% ≤ | 1.00 | 1.20 | 1.5 | 2.0 | 2.5 | - | - |
| CaO %≤ | - | - | - | 2.0 | 2.0 | 3.0 | 3.0 |
| Zowoneka Porosity % ≤ | 16 | 16 | 18 | 16 | 18 | 18 | 20 |
| Kuchulukirachulukira g/cm3 ≥ | 3.0 | 3.0 | 2.95 | 2.90 | 2.85 | ||
| Cold Crushing Mphamvu MPa ≥ | 60 | 60 | 60 | 60 | 50 | ||
| 0.2Mpa Refractoriness Under Load ℃≥ | 1700 | 1700 | 1650 | 1560 | 1500 | ||
| Kusintha kokhazikika kwa mzere% | 1650℃×2h -0.2~0 | 1650℃×2h -0.3~0 | 1600℃×2h -0.5~0 | 1600℃×2h -0.6~0 | |||
Kugwiritsa Ntchito Njerwa za Magnesia Pang'anjo
Njerwa za maginito ndizoyenera ng'anjo zamtundu uliwonse, monga ng'anjo zazitsulo. Kuphatikiza apo, njerwa za magnesia zimagwiritsidwa ntchito kwambiri pazida zina zotentha, monga ng'anjo ya hyperthermia, ng'anjo ya simenti yozungulira, ng'anjo yotentha pansi ndi khoma, chipinda chotsitsimutsa cha ng'anjo yamagalasi, ng'anjo yamagetsi yamagetsi pansi ndi khoma ndi zina zotero.
Magnesia Njerwa Wopanga ku ChinaM
Wopanga RS refractory ndi katswiri wopanga njerwa za maginito ku China, atha kukupatsirani njerwa zapamwamba za maginito. Ngati muli ndi zofuna za njerwa za magnesia, kapena muli ndi mafunso pa njerwa za magnesia zokhudzana ndi zizindikiro za thupi ndi mankhwala , chonde tilankhule nafe kwaulere, malonda athu adzakulumikizani mwamsanga.
