Umsebenzi we-Alumina crucible

Uma kukhona okuqinile okuzoshiswa ngomlilo omkhulu, kufanele kusetshenziswe i-crucible. Uma i-crucible isetshenziswa, ikhava ye-crucible ngokuvamile ibekwe ku-crucible ngokugoqa ukuvimbela izinto ezishisayo ukuthi zingagxumi ngaphandle, nokuvumela umoya ukuthi ungene futhi uphume ngokukhululekile ngenxa yokusabela okungenzeka kwe-oxidation. Ngenxa yokuthi iphansi le-crucible lincane kakhulu, ngokuvamile lidinga ukubekwa kunxantathu wodaka ukuze lishiswe ngokuqondile ngomlilo.

I-crucible ingabekwa iqonde noma ithambekele ku-tripod yensimbi, futhi ingabekwa ngokwayo kuye ngezidingo zokuhlolwa. Ngemuva kokushiswa kwe-crucible, akufanele kubekwe etafuleni lensimbi elibandayo ngokushesha ukuze livimbele ukuqhekeka ngenxa yokupholisa ngokushesha. Ungalibeki etafuleni lezingodo ngokushesha ukuze ugweme ukushisa phezulu kwetafula noma ukubangela umlilo. Indlela efanele ukuyishiya ku-iron tripod ukuze iphole ngokwemvelo, noma ukuyibeka enethi ye-asbestos ukuyiyeka iphole kancane. Sicela usebenzise izindlawu ezibethelwayo ukuze uzibethele.

Uma okuqinile kushiswa umlilo omkhulu, kufanele kusetshenziswe i-crucible. Uma usebenzisa i-crucible, isivalo se-crucible ngokuvamile sibekwe ku-crucible ngokugoqa ukuvimbela izinto ezishisayo ukuthi zingagxumeli ngaphandle futhi uvumele umoya ukuthi ungene futhi uphume ngokukhululekile ngenxa yokusabela okungenzeka kwe-oxidation. Njengoba phansi kwe-crucible kuncane kakhulu, kuvame ukubekwa kunxantathu wodaka ukuze kushiswe ngokuqondile ngomlilo.

I-crucible ingabekwa iqonde noma itshekiselwe ekusekeleni unxantathu wensimbi, futhi ingabekwa yodwa ngokuya ngezidingo zokuhlolwa. Ungabeki i-crucible etafuleni lensimbi elibandayo ngokushesha ngemva kokufudumeza ukuze ugweme ukuphuka ngenxa yokupholisa ngokushesha. Ungalibeki etafuleni lezingodo ngokushesha ukuze ugweme ukushisa phezulu kwetafula noma ukubangela umlilo. Indlela efanele ukuyishiya ku-iron tripod ukuze iphole ngokwemvelo, noma ukuyibeka enethi ye-asbestos ukuyiyeka iphole kancane. Sicela usebenzise izindlawu zokubethelwa ukuze ubhoboze.

I-corundum yemvelo cishe iyi-alumina emsulwa. I-corundum yokwenziwa yenziwa ngokufaka i-alumina ehlanzekile ekushiseni okuphezulu. Iyakwazi ukumelana namazinga okushisa aphakeme, inephuzu lokuncibilika elingu-2045°C, inobulukhuni obuphezulu, futhi inokumelana nokugqwala okukhulu kuma-asidi nama-alkali.