Izitini ze-alumina eziphikisayo ziwuhlobo lwezinto eziphikisayo ezisetshenziswa embonini yensimbi. Izitini zakhiwe nge-alumina, into ekwazi ukumelana nokushisa, ukugqwala nokuguga. Izitini ze-alumina refractory zisetshenziswa embonini yensimbi ukuze kwakhiwe ulayini kanye nokufakwa kwe-insulation kwizithando zomlilo, okokhela, nezinye izinto zokusebenza ezishisa kakhulu. Izitini ze-alumina eziphikisayo zihlala isikhathi eside futhi zinikeza ukufakwa okushisayo okuphakeme nokumelana nokugqwala. Izitini ziyakwazi ukumelana namazinga okushisa afinyelela ku-2000°C (3632°F). Ukushisa okuphezulu kwe-thermal conductivity kusiza ukunciphisa ukusetshenziswa kwamandla nokwandisa ukusebenza kahle. Izitini ze-alumina refractory zinezinga eliphezulu lokumelana namakhemikhali, futhi ziyakwazi ukumelana nemvelo ebolayo yokukhiqiza insimbi. Impahla futhi imelana kakhulu nokuhuzuka nokuguga, okuyenza ilungele ukusetshenziswa ezinhlelweni zokushisa okuphezulu. Izitini ze-alumina refractory zitholakala ngezinhlobonhlobo zomumo nosayizi, okuhlanganisa amabhulokhi, amakhyubhu, namabhodi. Izitini zingasikwa futhi zibunjwe ukuze zivumelane nobukhulu obuqondile besithando somlilo noma isithando somlilo. Izitini ngokuvamile zisetshenziselwa ukuhlanganisa izindonga, uphahla, kanye nephansi lesakhiwo. Izitini ze-alumina refractory zivame ukusetshenziswa emisebenzini yensimbi kanye nezisekelo. Asetshenziselwa ukuhlanganisa izindonga, phansi, nophahla lwesithando somlilo, iziko, noma ezinye izinto zokusebenza. Izitini ziphinde zisetshenziswe kwezinye izinhlelo zokusebenza ezifana nokufaka izindonga zeziqhumane zomlilo, izilebhisi, neziguquli. Izitini ze-alumina refractory ngokuvamile zenziwe ngengxube ye-alumina, i-silica, ne-magnesia. Izitini zishiswa emazingeni okushisa aphezulu ukuze zikhiqize into eqinile, eqinile. Izitini zingabuye zihlanganiswe nezinye izinto, njenge-silicon carbide, ukukhulisa ukumelana nokugqwala nokuguga. Izitini ze-alumina refractory ziyingxenye ebalulekile yemboni yensimbi. Njengoba imboni yensimbi iqhubeka nokuthuthuka nokusungula izinto ezintsha, ukusetshenziswa kwalezi zitini kuzokwanda kakhulu. Izitini zinikeza ukufakwa okushisayo okuphakeme kanye nokumelana nokugqwala, okuzenza zibe ukukhetha okuhle kwendawo enzima yokukhiqiza insimbi.
Isikhathi sokuthumela: Feb-10-2023