- 17
- Sep
Njerwa zapamwamba za alumina
Njerwa zapamwamba za alumina
Ubwino wazogulitsa: kutentha kwambiri komanso kutentha kwa kutentha, ndikuwonjezeka kwa Al2O3, magwiridwe antchito a slag amakula bwino.
Kugwiritsa ntchito kwazinthu: Amagwiritsidwa ntchito makamaka pakapangidwe kazitsulo zophulika, ziwombankhanga zotentha, nsonga zamagetsi zamagetsi, ng’anjo zophulika, ng’anjo zowotchera, ndi maiko ozungulira. Kuphatikiza apo, njerwa zapamwamba za alumina zimagwiritsidwanso ntchito ngati njerwa zotseguka zowotchera moto, mapulagi othandizira kutsanulira, njerwa zam’madzi, ndi zina zambiri.
Mafotokozedwe Akatundu
Kukhazikitsa njerwa zapamwamba za alumina mu uvuni ndiukadaulo wovuta kwambiri, makamaka m’malo okhala ndi zovuta, kusintha kwakukulu kokhotakhota ndi mbali za arched padenga lamoto. Kukhazikitsa kosavuta kwa njerwa za aluminiyamu kumatha kubweretsa kutentha kapena kutentha kwa moto. Njerwa zabwinobwino zimabweretsa zovuta pakumanga. Chifukwa chake, ndikofunikira kusinthira njerwa zopangidwa mwapadera zooneka ngati alumina, zomwe zimachepetsa zovuta zomanga ndikuchotsa mipata yomwe ingachitike chifukwa cha zovuta zomanga mukamagwiritsa ntchito njerwa zapamwamba kwambiri za alumina. Moyo wamoto.
Mawonekedwe a njerwa zapadera zopangidwa ndi alumina ayenera kukwaniritsa izi:
(1) oonera enieni kulolerana: kutalika kulolerana ± 2%; Mphero woboola pakati lalikulu ndi laling’ono mutu m’lifupi kulolerana ± 2mm; kukula kusiyana kulolerana ± 1mm; kulekerera kwakutali ± 1%. Njerwa zopangidwa ndi alumina zapamwamba, kusiyana kwake ndi 2mm.
(2) Kutaya m’mphepete. Lolani mbali yotentha kapena yozizira kuti mbali ziwiri ziwonongeke mpaka 40mm kutalika ndi 5mm kuya; koma osaloledwa kupitirira.
(3) Kutaya pang’ono. Pali kona imodzi yokha yomwe imawononga njerwa zapamwamba zopangira aluminiyamu pamalo otentha komanso ozizira, ndipo kutalika konse kwa mbali zitatu za ngodya sikuyenera kupitirira 50mm. Kutayika kwa ngodya kosapitirira 20mm sikuganiziridwa.
(4) Ming’alu. Pamwamba pa njerwa amaloledwa kukhala ndi ming’alu yokhala ngati tsitsi; palibe ming’alu yofanana ndi yovalayi yomwe imaloledwa; ming’alu ina yopitilira 40mm komanso osakulirapo kuposa 0.2mm imaloledwa.
(5) Maenje, malo osungunuka ndi ziphuphu. Maenje ovomerezeka ndi malo osungunuka ndi 10mm m’mimba mwake ndi 10mm mozama; chotupa ndi 0.5mm. Njerwa zapamwamba za alumina zokhala ndi mapiri angapo muboola la njerwa sizipitilira 70% yathunthu.
Zizindikiro zakuthupi ndi zamankhwala
Udindo / Index | Njerwa zapamwamba za alumina | Secondary mkulu alumina njerwa | Atatu milingo alumina njerwa | Njerwa zapamwamba kwambiri za alumina |
LZ-75 | LZ-65 | LZ-55 | LZ-80 | |
AL203 ≧ | 75 | 65 | 55 | 80 |
Fe203% | 2.5 | 2.5 | 2.6 | 2.0 |
Kuchulukana kachulukidwe g / cm2 | 2.5 | 2.4 | 2.2 | 2.7 |
Kuponderezana kwamphamvu kutentha kwa firiji MPa> | 70 | 60 | 50 | 80 |
Katundu wofewetsa kutentha ° C | 1520 | 1480 | 1420 | 1530 |
Kutulutsa kotsutsa ° C> | 1790 | 1770 | 1770 | 1790 |
Zikuoneka porosity% | 24 | 24 | 26 | 22 |
Kutentha kwamuyaya kwa kusintha kwa mzere% | -0.3 | -0.4 | -0.4 | -0.2 |