Impuphu ye-alumina iwuhlobo oluyinhloko lwe-white fused alumina grit kanye nezinye izinto zokubhula, ezinezici zokumelana nokushisa okuphezulu, ukumelana nokugqwala kanye nezakhiwo ezizinzile. I-Nano-alumina XZ-LY101 iwuketshezi olungenambala nolusobala, olusetshenziswa kabanzi njengezithasiselo kuma-resin ahlukahlukene e-acrylic, ama-resin e-polyurethane, ama-resin e-epoxy, njll. Ingaba futhi isinyibilikisi esisekelwe emanzini noma esisekelwe ku-oyela, futhi singambozwa ngezinto zokumboza ngengilazi, amatshe ayigugu, izinto zethuluzi lokucacisa, njll.; futhi izinhlobo ezahlukene zempuphu ye-alumina zinezisetshenziswa ezahlukene. Okulandelayo kugxile ekwethuleni ukusetshenziswa kwempuphu ye-alumina yohlobo lwe-α, γ, kanye ne-β.
1.α-alumina powder
Ku-lattice yempuphu ye-alumina yohlobo lwe-α, ama-ion e-oxygen ahlanganiswe eduze ngesimo se-hexagonal, i-Al3+ isatshalaliswa ngokulinganayo esikhungweni sokuxhumanisa se-octahedral esizungezwe ama-ion e-oxygen, futhi amandla e-lattice makhulu kakhulu, ngakho-ke iphuzu lokuncibilika kanye nephuzu lokubila liphezulu kakhulu. I-oxidation yohlobo lwe-α I-Aluminium ayincibiliki emanzini nase-asidi. Ibizwa nangokuthi i-aluminium oxide embonini. Iyinto eluhlaza eyisisekelo yokwenza i-aluminium yensimbi; isetshenziselwa futhi ukwenza izitini ezahlukahlukene zokuphikisa, izitsha zokuphikisa, amapayipi okuphikisa, kanye nezinsimbi zokuhlola ezishisa kakhulu; ingasetshenziswa futhi njengento yokukhuhla, evimbela ilangabi I-alpha alumina ehlanzekile kakhulu nayo iyinto eluhlaza yokukhiqiza i-corundum yokwenziwa, i-ruby yokwenziwa kanye ne-sapphire; isetshenziselwa futhi ukukhiqiza isisekelo sezifunda ezinkulu zanamuhla ezihlanganisiwe.
2. impuphu ye-γ-alumina
I-alumina yohlobo lwe-γ iyi-aluminium hydroxide ohlelweni lokuphelelwa amanzi oluphansi oluyi-140-150 ℃, imboni ibizwa nangokuthi i-alumina esebenzayo, i-aluminium glue. Isakhiwo se-oxygen ion approximation sohlangothi oluqondile lwesikhungo sibekwe eduze, i-Al3 + isatshalaliswa ngokungajwayelekile kwi-oxygen ion ezungezwe izikhala ze-octahedral kanye ne-tetrahedral. I-alumina yohlobo lwe-γ engancibiliki emanzini, ingancibilikiswa kwisisombululo se-asidi eqinile noma i-alkali eqinile, izoshiswa ku-1200 ℃ yonke izoguqulwa ibe yi-α-type alumina. I-γ-type alumina iyinto embozwe ngembobo, indawo yangaphakathi yegremu ngayinye ifinyelela kumamitha-skwele angamakhulu, amandla aphezulu okumunca. Umkhiqizo wezimboni uvame ukuba yizinhlayiya eziyisilinda ezingenambala noma ezipinki kancane ezinokumelana okuhle kwengcindezi. Embonini yokucwenga uphethiloli kanye ne-petrochemical ivame ukusetshenziswa njenge-adsorbent, i-catalyst kanye ne-catalyst carrier; embonini kukhona uwoyela we-transformer, i-turbine oil deacidification agent, esetshenziselwa nokuhlaziywa kwengqimba yombala; Elabhorethri kukhona i-desiccant eqinile nengathathi hlangothi, amandla ayo okomisa angaphansi kwe-phosphorus pentoxide, ngemuva kokusetshenziswa ekushiseni okulandelayo okungu-175 ℃ amahora angu-6-8 kungabuyekezwa futhi kusetshenziswe kabusha.
3.β-alumina powder
Impuphu ye-alumina yohlobo lwe-β ingabizwa nangokuthi i-active alumina powder. Impuphu ye-alumina esebenzayo inamandla aphezulu okusebenza, i-hygroscopicity enamandla, ayivuvuki noma iqhekeke ngemva kokumunca amanzi, ayinabo ubuthi, ayinaphunga, ayincibiliki emanzini nase-ethanol, inomuncu oqinile we-fluorine, esetshenziswa kakhulu ekususeni i-fluoride emanzini okuphuza ezindaweni ezine-fluorine eningi.
I-alumina esebenzayo inekhono lokumunca amanzi ngokukhetha kumagesi, umhwamuko wamanzi kanye noketshezi oluthile. Ngemva kokugcwala komunwako, ingavuselelwa ngokususa amanzi ngokufudumeza cishe ku-175-315°C. Ukumunca nokuvuselela kungenziwa izikhathi eziningana. Ngaphezu kokusetshenziswa njenge-desiccant, ingamunca nomhwamuko ovela emoyeni-mpilo ongcolile, i-hydrogen, i-carbon dioxide, igesi yemvelo njll. yamafutha okugcoba. Iphinde isetshenziswe njengesikhuthazi kanye nesithwali se-catalyst kanye nesithwali sokuhlaziywa kwengqimba yombala.