Izinhlobo Eziyisi-7 Zezinto Ezingavuthiwe ze-Corundum Refractory Ezivamise Ukusetshenzwa Ku-Refractory Castables

01 Skusho uCorundum
I-Sintered corundum, eyaziwa nangokuthi i-alumina e-sintered noma i-semi-molten alumina, i-alumina eyi-refractory eyenziwe nge-alumina e-calcined noma i-alumina yezimboni njengempahla eluhlaza, egaywe ibe amabhola noma imizimba eluhlaza, futhi ifakwe emanzini ekushiseni okuphezulu kuka-1750 ~ 1900°C.

I-alumina e-Sintered equkethe ngaphezu kuka-99% we-aluminiyamu oxide iningi lenziwe nge-corundum enohlamvu olufanayo oluhlangene ngokuqondile. Izinga lokukhishwa kwegesi lingaphansi kwe-3.0%, umthamo wevolumu ufinyelela ku-3.60% / cubic meter, i-refractoriness iseduze nendawo yokuncibilika kwe-corundum, inokuqina kwevolumu enhle kanye nokuzinza kwamakhemikhali emazingeni okushisa aphezulu, futhi ayichithwa ngokunciphisa umkhathi, ingilazi encibilikisiwe nensimbi encibilikisiwe. , amandla amahle emishini kanye nokumelana nokugqoka ekushiseni okujwayelekile nokushisa okuphezulu.

02I-Fused Corundum
I-Fused corundum i-corundum yokwenziwa eyenziwe ngokuncibilikisa impushana ye-alumina ehlanzekile esithandweni somlilo sikagesi esisezingeni eliphezulu. Inezici zendawo yokuncibilika ephezulu, amandla aphezulu emishini, ukumelana nokushaqeka okuhle kokushisa, ukumelana nokugqwala okuqinile kanye ne-coefficient encane yomugqa wokunweba. I-Fused corundum iyimpahla eluhlaza yokukhiqiza izinto ezikhethekile zokuphikisa ezisezingeni eliphezulu. Ikakhulukazi ihlanganisa i-corundum emhlophe ehlanganisiwe, i-corundum ensundu ehlanganisiwe, i-sub-white corundum, njll.

03I-Fused White Corundum
I-corundum emhlophe ehlanganisiwe yenziwe ngempushana ye-alumina ehlanzekile futhi incibilika ekushiseni okuphezulu. Imhlophe ngombala. Inqubo yokuncibilika kwe-corundum emhlophe ngokuyisisekelo iyinqubo yokuncibilika kanye nokuvuselela kabusha kwe-alumina powder yezimboni, futhi ayikho inqubo yokunciphisa. Okuqukethwe kwe-Al2O3 akukho ngaphansi kuka-9%, futhi okuqukethwe kokungcola kuncane kakhulu. Ukuqina kuncane kune-corundum ensundu futhi ukuqina kuphansi kancane. Ivamise ukusetshenziselwa ukwenza amathuluzi abrasive, izitsha zobumba ezikhethekile kanye nezinto eziphambili zokuphikisa.

04I-Fused Brown Corundum
I-corundum ensundu ehlanganisiwe yenziwe nge-high-alumina bauxite njengento eluhlaza futhi ixutshwe ne-coke (anthracite), futhi inyibilikiswa esithandweni sikagesi esinezinga eliphezulu lokushisa ezingeni lokushisa elingaphezu kuka-2000°C. I-corundum ensundu ehlanganisiwe inokuthungwa okuminyene nobulukhuni obuphakeme futhi ivame ukusetshenziswa kuma-ceramics, ukubunjwa okunembayo kanye nezinto ezithuthukisiwe eziphikisayo.

05I-Corundum emhlophe
I-subwhite corundum ikhiqizwa i-electromelting ebangeni elikhethekile noma i-bauxite yebanga lokuqala ngaphansi komkhathi wokunciphisa kanye nezimo ezilawulwayo. Lapho uncibilika, engeza i-ejenti yokunciphisa (ikhabhoni), i-ejenti yokuhlalisa (amafayili ensimbi) kanye ne-decarburizing (isikali sensimbi). Ngenxa yokuthi ukwakheka kwamakhemikhali kanye nezakhiwo zomzimba kuseduze ne-corundum emhlophe, ibizwa ngokuthi i-sub-white corundum. Ukuminyana kwayo ngobuningi kungaphezu kuka-3.80g/cm3 futhi ukubukeka kwayo porosity kungaphansi kuka-4%. Kuyimpahla efanelekile yokukhiqiza izinto ezisezingeni eliphezulu eziphikisayo nezinto ezingagugi.

06I-Chrome corundum
Ngokwesisekelo se-corundum emhlophe, i-chromium engu-22% yengezwa, futhi yenziwa ngokuncibilika esithandweni somlilo se-arc kagesi. Umbala unsomi-bomvu. Ukuqina kuphakeme kancane kune-corundum ensundu, efana ne-corundum emhlophe, futhi ubulukhuni obuncane bungaba ngu-2200-2300Kg/mm2. Ukuqina kuphakeme kunokwe-corundum emhlophe futhi kungaphansi kancane kunokwe-brown corundum.

07I-Zirconium Corundum
I-Zirconium corundum iwuhlobo lwe-corundum yokwenziwa eyenziwe ngokuncibilikisa i-alumina ne-zirconium oxide ekushiseni okuphezulu esithandweni somlilo se-arc kagesi, i-crystallizing, ukupholisa, ukuchotshozwa nokuhlola. Isigaba se-crystal esiyinhloko se-zirconium corundum yi-α-Al2O3, isigaba se-crystal sesibili yi-baddeleyite, futhi kukhona nenani elincane lesigaba seglasi. I-crystal morphology kanye nesakhiwo se-zirconium corundum yizici ezibalulekile ezithinta ikhwalithi yayo. I-Zirconium corundum inezici zokuqina okuphezulu, ukuqina okuhle, amandla aphezulu, ukuthungwa okuminyene, amandla okugaya aqinile, izakhiwo zamakhemikhali ezizinzile, nokumelana nokushaqeka okuhle kokushisa. Isetshenziswa kabanzi ku-abrasives kanye nezimboni zezinto eziphikisayo. Ngokusho kokuqukethwe kwayo kwe-zirconium oxide, ingahlukaniswa ngamazinga amabili womkhiqizo: i-ZA25 ne-ZA40.