Alumina ufa ndiye zinthu zazikulu zopangira zoyera zosakanikirana ndi aluminiyamu ndi ma abrasives ena, omwe ali ndi mawonekedwe a kutentha kwambiri, kukana kwa dzimbiri ndi zinthu zokhazikika.Nano-aluminium XZ-LY101 ndi madzi opanda mtundu komanso owoneka bwino, omwe amagwiritsidwa ntchito kwambiri ngati zowonjezera mu resin zosiyanasiyana za acrylic, polyurethane resins, epoxy resins, etc. Itha kukhalanso yosungunulira madzi kapena mafuta, ndipo imatha kuphimbidwa pa galasi ❖ kuyanika zipangizo, miyala yamtengo wapatali, mwatsatanetsatane zida zida, etc.;ndi mitundu yosiyanasiyana ya ufa wa alumina imakhala ndi ntchito zosiyanasiyana.Zotsatirazi zikuyang'ana pa kuyambitsa kugwiritsa ntchito α, γ, ndi β-mtundu wa alumina ufa.
1.α-alumina ufa
Mu lattice ya α-mtundu wa alumina ufa, ma ion okosijeni ali odzaza kwambiri ndi mawonekedwe a hexagonal, Al3 + imagawidwa mofananira mu octahedral coordination center yozunguliridwa ndi ayoni okosijeni, ndipo mphamvu ya latisi ndi yayikulu kwambiri, kotero malo osungunuka ndi malo otentha amakhala kwambiri. apamwamba.α-mtundu wa okosijeni Aluminiyamu sasungunuka m'madzi ndi asidi.Amatchedwanso aluminium oxide mumakampani.Ndiwofunika zopangira zopangira zitsulo zotayidwa;amagwiritsidwanso ntchito popanga njerwa zosiyanasiyana zokanira, ziboliboli zokanira, mapaipi okana, ndi zida zoyesera kutentha kwambiri;itha kugwiritsidwanso ntchito ngati abrasive, flame retardant High-kuyera alpha alumina ndi zopangira kupanga corundum yokumba, ruby yochita kupanga ndi safiro;amagwiritsidwanso ntchito kupanga gawo lapansi la mabwalo amakono akuluakulu ophatikizika.
2. γ-alumina ufa
γ-mtundu wa aluminiyamu ndi aluminium hydroxide mu 140-150 ℃ otsika kutentha chilengedwe dongosolo dehydration, makampani amatchedwanso yogwira aluminiyamu, zotayidwa guluu.Mapangidwe a ion oxygen yoyandikira mbali yoyima yapakatikati yokhazikika kwambiri, Al3 + yogawidwa mosakhazikika mu ayoni ya okosijeni yozunguliridwa ndi mipata ya octahedral ndi tetrahedral.γ-mtundu wa aluminiyamu wosasungunuka m'madzi, ukhoza kusungunuka mu asidi amphamvu kapena njira yolimba ya alkali, idzatenthedwa mpaka 1200 ℃ yonse idzasinthidwa kukhala alumina yamtundu wa α.γ-mtundu aluminiyamu ndi porous zinthu, mkati pamwamba pa galamu aliyense mpaka mazana a lalikulu mamita, mkulu ntchito adsorption mphamvu.Zogulitsa zamafakitale nthawi zambiri zimakhala zopanda utoto kapena zofiirira pang'ono zokhala ndi kukana bwino.M'makampani oyenga mafuta ndi petrochemical amagwiritsidwa ntchito ngati adsorbent, chothandizira komanso chonyamulira;mu makampani ndi thiransifoma mafuta, turbine mafuta deacidification wothandizira, amagwiritsidwanso ntchito kusanthula wosanjikiza mtundu;mu labotale ndi desiccant wamphamvu wosalowerera ndale, kuyanika kwake sikuchepera kuposa phosphorous pentoxide, pambuyo pogwiritsidwa ntchito mu 175 ℃ Kutentha kwa 6-8h kungathenso kusinthidwa ndikugwiritsidwanso ntchito.
3.β-alumina ufa
β-mtundu wa alumina ufa ukhoza kutchedwanso ufa wa alumina wogwira ntchito.Adamulowetsa aluminiyamu ufa ali mkulu mawotchi mphamvu, wamphamvu hygroscopicity, satupa kapena kusweka pambuyo kuyamwa madzi, sanali poizoni, odorless, insoluble m'madzi ndi Mowa, ali adsorption wamphamvu fluorine, makamaka ntchito fluoride kuchotsa madzi akumwa m'madera mkulu fluorine. .
Aluminium yolumikizidwa imatha kutengera madzi kuchokera ku mpweya, nthunzi wamadzi ndi zakumwa zina.Pambuyo pa machulukitsidwe a adsorption, imatha kutsitsimutsidwa ndikuchotsa madzi potentha pafupifupi.175-315 ° C.Adsorption ndi chitsitsimutso akhoza kuchitidwa kangapo.Kuphatikiza pa kugwiritsidwa ntchito ngati desiccant, imathanso kutulutsa nthunzi kuchokera ku mpweya woipitsidwa, hydrogen, carbon dioxide, gasi wachilengedwe ndi zina zamafuta opaka mafuta.Amagwiritsidwanso ntchito ngati chothandizira komanso chonyamulira chonyamulira komanso ngati chonyamulira pakuwunika kwa mitundu.