T38 mkulu aluminiyamu njerwa (mpeni mtundu)

T38, t39 mkulu aluminiyamu njerwa ndi zigawo zikuluzikulu za mkulu aluminiyamu bauxite; sillimanite gulu mchere (kuphatikizapo kyanite, andalusite, sillimanite, etc.); zopangira zopangira, monga alumina wamafuta, zopangira mullite, magetsi Zaphatikizidwa ndi corundum ndi zina zotero. China yapamwamba aluminiyamu banadium ili ndi chuma chambiri komanso mawonekedwe abwino. Madera opanga amapezeka makamaka ku Shanxi, Henan, Hebei, Guizhou, Shandong ndi malo ena. Mkulu alumina bauxite opangidwa makamaka ndi chisakanizo cha bauxite (α-Al2O3 · H2O) ndi kaolinite.

Njerwa zapamwamba za alumina ndi ndale refractory chuma ndi zili aluminiyamu osachepera 60%. Amapangidwa ndikupangidwa kuchokera ku bauxite kapena zinthu zina zopangira zokhala ndi alumina zambiri. Fakitale yathu imapanga njerwa zapamwamba za alumina zotentha kwambiri komanso zotulutsa mafuta pamwamba pa 1700 ℃. Kukana kwabwino kwa slag kumagwiritsidwa ntchito kwambiri pakapangidwe kazitsulo zophulika, ng’anjo zotentha, madenga ama ng’anjo zamagetsi, ng’anjo zophulika, ng’anjo zowotchera moto, ndi maiko ozungulira. Zazikuluzikuluzathu zomwe fakitole yathu ndi njerwa za alumina (ie njerwa za T-mutu) T-3 T38 T39 T19 T20 T23 T7 T52 T1, njerwa zopangidwa mwaluso kwambiri, kuphulika kwa ng’anjo yoyaka njerwa G2 G3 G4 G5 G6 GXNUMX GXNUMX njerwa za pakhoma ndi njerwa zina zapamwamba zopangira.

1. Refractoriness: Refractoriness ya t38 ndi t39 njerwa zapamwamba za alumina ndizokwera kuposa njerwa zadothi komanso njerwa za silika, mpaka 1750 ~ 1790 ℃, zomwe ndi zida zapamwamba zopangira.

2. Kutentha kwachangu: Chifukwa chakuti zotayidwa zambiri zimakhala ndi Al2O3 yambiri, zosowa zochepa, komanso magalasi osawoneka bwino, kutentha kwazitsulo ndikokwera kuposa njerwa zadothi ndi njerwa zapamwamba za alumina, koma chifukwa makhiristo mullite samapanga maukonde, Kutentha kofewa Katundu wosungidwa akadali wosakwanira kuposa njerwa za silika.

3.Kulimbana ndi slag: njerwa za alumina zapamwamba zili ndi Al2O3, yomwe ili pafupi ndi zida zosalozera, ndipo imatha kukana kukokoloka kwa slag acidic ndi slagine slag. Popeza ili ndi SiO2, kuthana ndi slagine slag ndibwino kuposa slag acidic. Ofooka. Njira yopangira njerwa zapamwamba za alumina komanso njerwa zadothi zophatikizika ndizofanana. Kusiyanitsa ndikuti kuchuluka kwa clinker muzopanganso ndikokwera, komwe kumatha kukhala 90-95%. Choponyeracho chimafunika kusanjidwa ndikuchotsedwa kuti chisiye chitsulo chisanaphwanye, ndipo kutentha kotentha Kwambiri, monga Ⅰ, Ⅱ njerwa zapamwamba za alumina nthawi zambiri zimakhala 1500 ～ 1600 ℃ zikawotchedwa mu uvuni wanjira. Kupanga kachitidwe ku China kwatsimikizira kuti isanaphwanye, high-alumina clinker imasankhidwa ndikusankhidwa, ndikusungidwa m’magawo atatu. Kugwiritsa ntchito bauxite clinker komanso njira zophatikizira zadongo zimatha kukonza mtundu wa malonda. Amagwiritsidwa ntchito makamaka pomanga ng’anjo, zotentha, ndi madenga amoto. , Kuphulika kwa ng’anjo, ng’anjo yobwezeretsanso, makina oyatsira moto, ndi zina zambiri.

Njerwa zamitengo yapamwamba kwambiri, ndiye kuti, zotayidwa za aluminium zotsekemera zomwe zili ndi alumina zopitilira 48%. Amapangidwa ndikupangidwa kuchokera ku bauxite kapena zinthu zina zopangira zokhala ndi alumina zambiri. Mkulu matenthedwe bata, refractoriness pamwamba 1770 ℃. Kukana kwa slag kuli bwino.

Kawirikawiri amagawidwa m’magulu anayi:

Kalasi Woyamba: Al2O3 okhutira ≥75%;

Kalasi Ⅱ: Al2O3 okhutira 60% ~ 75%;

Kalasi Ⅲ: Al2O3 okhutira ndi 48% ~ 60%;

Gulu lapadera: AL2O3 okhutira ≥80%.

Ikhozanso kugawidwa malinga ndi mchere, yomwe imagawidwa m’magulu asanu: low mullite (sillimanite), mullite, mullite-corundum, corundum-mullite ndi corundum.

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