Kunomehluko omkhulu phakathi kwezitini zobumba kanye izitini eziphakeme ze-alumina, kodwa uphi umehluko?

Izitini zobumba zinokuqukethwe kwe-aluminium okungu-35% -45%. Yenziwe nge-clinker yobumba oluqinile, exutshwe nezidingo zosayizi wezinhlayiyana, zakhiwe futhi zomiswa, futhi zishiswe ekushiseni kwe-1300-1400 ° C. Inqubo yokudubula yezitini zobumba ngokuyinhloko inqubo yokuphelelwa amanzi emzimbeni okuqhubekayo nokubola kwe-kaolin ukuze kwakheke amakristalu e-mullite. Izitini zobumba ziyimikhiqizo ye-acidic refractory ebuthakathaka, engamelana nokuguguleka kwe-acid slag negesi ye-asidi. Izitini zobumba zinezakhiwo ezinhle ezishisayo futhi zimelana nokubanda okusheshayo nokushisa okusheshayo.

Isitini sobumba

Ezingeni lokushisa lika-0-1000 ℃, umthamo wezitini zobumba uzokhula ngokulinganayo ngokwanda kwezinga lokushisa. Ijiko lokunweba eliwumugqa lilingana nomugqa oqondile, futhi izinga lokunwetshwa komugqa ngu-0.6% -0.7%. Lapho izinga lokushisa lifinyelela ku-1200 ℃, Lapho izinga lokushisa liqhubeka nokukhuphuka, umthamo walo uzoqala ukuncipha kusukela ekunwebeni okukhulu. Ngemuva kokuthi izinga lokushisa lesitini sobumba lidlule i-1200 ℃, indawo encibilikayo ephansi esitini sobumba iyancibilika kancane kancane, futhi izinhlayiya zicindezelwa ngokuqinile komunye nomunye ngenxa yokungezwani kwendawo, okuholela ekuncipheni kwevolumu.

Izitini eziphezulu ze-alumina refractory ziyimikhiqizo ephikisayo enokuqukethwe kwe-aluminium enkulu kuno-48%. Ukushisa kwe-refractoriness kanye nomthwalo wokunciphisa umthwalo wezitini eziphezulu ze-alumina ziphakeme kunezitini zobumba, futhi ukumelana kwabo kwe-slag corrosion kungcono, kodwa ukuzinza kwabo okushisayo akufani nezitini zobumba. Izitini eziphakeme ze-alumina zine-high density, i-porosity ephansi kanye nokumelana nokugqoka. Kwezinye izinhloko zesithando somlilo kanye nezansi zesithando somlilo, kungcono ukusebenzisa izitini eziphezulu ze-alumina ukwenza amatshe; noma kunjalo, uma kuyisitini esithile sobumba se-carbon furnaces, akufanelekile ukusebenzisa izitini eziphezulu ze-alumina, ngoba izitini eziphezulu ze-alumina zijwayele ukugoqa emazingeni okushisa aphezulu. I-angle ekhokhiwe.

Izitini eziphakeme ze-alumina

Izitini eziphakeme ze-alumina zisetshenziselwa ikakhulukazi ulwelwesi lweziko eziqhumayo, izitofu ezishisayo, uphahla lwesithando somlilo kagesi, iziko eliqhumayo, izithando zomlilo, kanye nama-rotary kilns. Ngaphezu kwalokho, izitini eziphakeme ze-alumina asetshenziswa kabanzi njengezitini zokuhlola ezivuselelwe eziko, amapulaki okuthulula amasistimu, izitini ze-nozzle, njll. Nokho, intengo yezitini eziphakeme ze-alumina iphakeme kunaleyo yezitini zobumba, ngakho-ke izitini zobumba kufanele zisetshenziswe lapho izitini eziphikisayo zobumba zingahlangabezana nezidingo. .