i-magnesia-alumina spinel

I-Magnesia-aluminium spinel (i-magnesia-alumina spinel) ibhekisela ezintweni ezingavuthiwe ezenziwe ngokwenziwa ze-spinel refractory zisebenzisa i-magnesium oxide ne-aluminium oxide njengezisetshenziswa zokusetshenziswa. Izinto ezisetshenziswayo azivamile ukutholakala emvelweni, kanti i-industrial magnesia-aluminium spinel yonke ihlanganiswe ngokwenziwa. I-Bauxite-based sintered magnesia-aluminium spinel yenziwe nge-bauxite yekhwalithi ephezulu enokuqukethwe kwe-Al2O3 okungaphezu kuka-76% kanye nekhwalithi ephezulu ye-magnesia powder evutha ukukhanya ene-MgO okuqukethwe okungaphezu kuka-95%. I-Sintered ezingeni lokushisa eliphezulu elingenhla.

Isingeniso

I-Bauxite-based sintered magnesia-aluminium spinel yenziwe nge-bauxite yekhwalithi ephezulu enokuqukethwe kwe-Al2O3 okungaphezu kuka-76% kanye nekhwalithi ephezulu ye-magnesia powder evutha ukukhanya ene-MgO okuqukethwe okungaphezu kuka-95%. Izinga lokushisa elingaphezulu le-sintering [1].

Izici ze-aluminium-magnesium spinel

I-Bauxite-based sintered magnesia-aluminium spinel yenziwe nge-bauxite yekhwalithi ephezulu enokuqukethwe kwe-Al2O3 okungaphezu kuka-76% kanye nekhwalithi ephezulu ye-magnesia powder evutha ukukhanya ene-MgO okuqukethwe okungaphezu kuka-95%. Ifakwe emazingeni okushisa aphezulu, ngobuningi obukhulu, okuqukethwe kwesigaba samaminerali aphezulu, izinhlamvu zekristalu ezithuthuke kahle, ukwakheka okufanayo kanye nekhwalithi ezinzile. I-Magnesium-aluminium spinel inokumelana nokugqwala okuhle, ukugqwala okuqinile nekhono lokuhlukanisa, ukumelana okuhle kwe-slag, ukumelana nokuhuzuka, ukuzinza kokushaqeka okushisayo, ukumelana nokushisa okuphezulu nezinye izici zokusebenza. Kuyimpahla efanelekile yokukhiqizwa kwemikhiqizo ephikisayo efana nezitini ze-magnesia-aluminium spinel zezindawo ezishisa kakhulu zokushisa usimende, izitini ze-ladle lining, kanye ne-ladle castables. I-Magnesium-aluminium spinel isetshenziswa kakhulu ezintweni eziphikisayo, ukuncibilikisa insimbi, izikloni ezijikelezayo zikasimende kanye neziko lezimboni zezingilazi[2].

Ukusetshenziswa kwe-Al-Mg Spinel

Inokumelana nokugqwala okuhle, ukumelana nokuhuzuka kanye nokuzinza okuhle kokushaqeka kokushisa. Ukusetshenziswa kwayo okuyinhloko: Okokuqala, ukushintsha isihlabathi se-magnesia chrome ukwenza izitini ze-magnesia-aluminium spinel zomlilo ojikelezayo usimende, okungagcini nje ukugwema ukungcola kwe-chromium, kodwa futhi kunokumelana okuhle kwe-spalling; okwesibili, isetshenziselwa ukwenza ama-ladle castables, ithuthukisa kakhulu Ukumelana nokugqwala kwe-steel plate lining. Isetshenziswa kabanzi ezintweni eziphikisayo zokwenza insimbi. Ukukhiqizwa kwekhwalithi ephezulu ye-pre-synthetic spinel kunikeza izinto ezintsha zokusetshenziswa zokukhiqiza ama-refractories angabunjiwe futhi amise okwezinga eliphezulu[2].

xazulula isixazululo

Kunezinhlobo ezimbili zendlela yokuncibilika kukagesi kanye nendlela ye-sintering. Indlela ye-electrofusion synthesis isebenzisa i-alumina yezimboni noma i-bauxite ye-high-purity kanye ne-magnesia eshiswe ukukhanya (equkethe i-magnesium yemvelo noma yolwandle (i-brine) ethwala amanzi) ngesilinganiso, futhi incibilika ekushiseni okuphezulu okungaba ngu-2200 ℃ esithandweni sikagesi se-arc. Indlela ye-sintering ukusebenzisa isilinganiso sempahla eluhlaza eshiwo ngenhla, ngemva kokugaya, ukuxutshwa, ukubhola, kanye nokubala kuhhavini elijikelezayo noma kuhhavini le-shaft ezingeni lokushisa eliphezulu elingaphezu kuka-1800℃. Kwezinye izitini, i-alumina yezimboni noma ephakeme Ngemva kokuba i-bauxite clinker ehlanzekile isigayiwe, iyengezwa noma ihlanganiswe ngokuhlanganyela, ixutshwe, futhi ibunjwe ngokuvumelana nezidingo zezithako, bese iqhunyiswa emazingeni okushisa aphezulu ukuze kukhiqizwe izitini ze-magnesia-aluminium spinel, okuyi-magnesia. esetshenziswa kakhulu eziqongweni zesithando somlilo ovulekile nezinye izingxenye.