Izitini ezingamelana nokugqwala kwePhosphate

Izitini ezingamelana nokugqokwa kwe-phosphate high-aluminium nazo zibizwa ngezitini ezingamelana nokugqwala kwe-phosphate. Izitini ezingagqokiwe ze-phosphate ziwuhlobo lwezinto zokwakha eziyizinga eliphakeme, okuyikhwalithi ephezulu ye-bauxite clinker noma isisombululo esinyene se-phosphoric acid njengempahla ephambili eluhlaza, noma i-aluminium phosphate binder, Ngemuva kokucindezelwa nokwakhiwa ngumshini owomile, kuyelashwa ngo-400-600 ℃ ukwenza imikhiqizo ehlanganisiwe ekhonjiwe ngamakhemikhali. Ihlanganiswe nezitini. Ukuze uvikele ukuncipha okukhulu ngesikhathi sokusetshenziswa komkhiqizo emazingeni aphezulu okushisa, izithako ngokuvamile zidinga ukwethula izinto zokusetshenziswa zokufudumeza ezinjenge-kyanite, i-sillimanite, i-pyrophyllite, ne-silicon carbide. Sintered with high alumina bricks and ceramics, the resistance to peeling is better, but the softening temperature is lower and corrosion resistance, so a little amount of fused corundum, mullite, etc. idinga ukwengezwa ukuqinisa i-matrix. Ngokususelwa kuzitini ezimelana ne-phosphoric acid kanye ne-phosphoric acid, izitini eziyinjwayelo ezenziwe ngezitini ezijwayelekile eziphakeme ze-alumina ngobuchwepheshe obukhethekile kanye nezithasiselo zamakhemikhali zikwenze ngcono kakhulu ukumelana nokuhuzuka kanye nokushisa okunciphisa umthwalo, kuphakeme kunezitini eziphakeme ze-alumina, amandla amahle, ukupholisa okusheshayo nokumelana nokushisa okusheshayo, Ukumelana nokugqwala kwamakhemikhali nokuhuzuka. Ukubukeka kwayo kuphakeme kunalokho kwezitini eziphakeme ze-alumina ezinsikeni zikasimende ezijikelezayo.

Ukusebenza ngobuchwepheshe:

(1) Ukusebenza kokumelana nokushisa okuphezulu kuhle, izinga lokushisa elichasayo likhulu kuneziqu ezingama-1770, lingamelana namazinga okushisa aphakeme kakhulu, futhi ukushintshashintsha kwamazinga okushisa aphezulu akunamthelela omkhulu.

(2) Ukuzinza okuhle kakhulu kokushisa, ukumelana nokushisa okubandayo nokushisa okusheshayo, futhi akukho-delamination noma ukuxebuka ngaphansi kwezinguquko zokushisa.

(3) Ukumelana namakhemikhali, akukho ukuqhekeka nokuxebuka okuzokwenzeka kumoya we-Co ezingeni lokushisa lika-400-600 ° C.

(4) Ukumelana nokugqoka okuhle namandla aphezulu okucindezela.

Izitini ze-phosphate ziye zamukelwa njengezitini ezisezingeni eliphakeme zokufaka ulayini wamakhemikhali kasimende nosawoti be-lime.

Kunezinhlobo ezimbili zezitini eziphakeme ze-phosphate-bonded high alumina: eyodwa izitini eziphakeme ze-phosphate-bonded high-alumina (ezibizwa ngezitini ze-phosphate), kanti enye izitini eziphakeme ze-phosphate-bonded high-alumina (ezibizwa ngezitini ezingamelana nokugqoka).

Izitini ze-Phosphate zisebenzisa isisombululo se-phosphoric acid ngesilinganiso esingu-42.5% kuya ku-50% njengesibopho, kanti ingqikithi iyinhlanganisela ye-bauxite ebalwa ekushiseni okungaphezu kuka-1600 ° C emlilweni ojikelezayo. Ngesikhathi sokusetshenziswa kwesitini, i-phosphoric acid iphendula ne-bauxite powder enhle esitinini ukuze isabele ngodaka olukhanyayo, futhi ekugcineni yakha isibopho esakhiwa kakhulu yi-cristobalite aluminium orthophosphate. Izitini ezingamelana nokugqoka zisebenzisa i-industrial phosphoric acid ne-industrial aluminium hydroxide ukulungiselela isisombululo se-aluminium phosphate njengesibopho. Isilinganiso sayo se-molar ngu-Al2O3: P2O5 = 1: 3.2. Isilinganiso esisetshenzisiwe siyefana nesezitini ze-phosphate. Ngenqubo yokusebenzisa izitini, njenge-phosphate, i-binder esekwe kuhlobo lwe-cristobalite-aluminium orthophosphate.

Izitini ze-phosphate zilungele umlomo womlilo wendawo yokuguquka yamalilo ajikelezayo nezinye izingxenye lapho izitini kulula ukuwa khona, futhi kunenzuzo nendawo yokudubula. Ibuye isetshenziswe kuma-fire shaft kilns, ama-kilns kilns, ama-rotary rotary kilns, njll.

Ukusebenza komkhiqizo: Inezici zamandla aphezulu okucindezela ekamelweni lokushisa, ukuzinza okuhle kokushisa okushisayo, ukushisa okuphezulu kokuthambisa umthwalo, ubukhulu obunembile, ukuminyana kwevolumu ephezulu, kanye nokumelana okuhle kokugqoka.

Izinkomba zomzimba nezamakhemikhali zezitini ze-phosphate: