Umehluko phakathi kwe-aluminium oxide ne-calcined alumina oxide

I-Aluminium oxide iyinto ephilayo enefomula yamakhemikhali ethi A1203, inhlanganisela eqinile kakhulu enephuzu lokuncibilika elingu-2054°C kanye nephuzu lokubila elingu-2980°C.Kuyikristalu ye-ionic engabai-ionizedemazingeni okushisa aphezulu futhi ivame ukusetshenziswa ekwenzeni izinto eziphikisayo.I-alumina ne-alumina ekhaliwe zombili ziqukethe into efanayo, kodwa ngenxa yezinye izindlela zokukhiqiza kanye nezinye umehluko wenqubo, ukuze kokubili ekusetshenzisweni kokusebenza ngakho kuzoba khona umehluko.

I-Alumina iyimaminerali eyinhloko ye-aluminium emvelweni, izochotshozwa futhi ifakwe ngesisombululo se-sodium hydroxide sokushisa okuphezulu ukuze kutholakale isisombululo se-alumina ye-sodium;isihlungi ukuze sisuse okusele, sipholise i-filtrate bese sengeza amakristalu e-aluminium hydroxide, ngemva kokunyakazisa isikhathi eside, isisombululo se-alumina ye-sodium sizobola futhi sinciphise i-aluminium hydroxide;hlukanisa imvula uyigeze, bese uyibala ku-950-1200°C ukuze uthole i-c-type alumina powder, i-calcined Alumina iwuhlobo lwe-alumina.Amaphuzu okuncibilika nokubilisa aphezulu kakhulu.

I-alumina ene-calcined ayincibiliki emanzini nase-asidi, eyaziwa nangokuthi i-aluminium oxide embonini, futhi iyisisetshenziswa esiyisisekelo sokukhiqizwa kwensimbi ye-aluminium;ingasetshenziswa futhi ekukhiqizeni izitini ezihlukahlukene ze-refractory, izinsimbi eziphikisayo, amashubhu aphikisayo kanye nezinsimbi zaselabhorethri eziphikisana nokushisa okuphezulu;ingasetshenziswa futhi njenge-abrasive, i-flame retardant kanye ne-filler;ukuhlanzeka okuphezulu kwe-alumina e-calcined nakho kuyimpahla eluhlaza yokukhiqiza i-corundum yokufakelwa, itshe elibomvu elibomvu lokwenziwa kanye netshe eliluhlaza okwesibhakabhaka;iphinde isetshenziselwe ukukhiqizwa kwama-substrates ebhodi amasekhethi esimanje amakhulu ahlanganisiwe.I-alumina kanye ne-alumina ebalwe enqubweni yokukhiqiza nezinye izici zihlukile kancane, izindawo ezisebenzayo zezimboni nazo zihlukile, ngakho-ke ekuthengeni imikhiqizo ngaphambi kokuqala ukuthola izindawo ezithile zokusetshenziswa.