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Hangarau whakarite o te titanium dioxide

1. Te tukanga waikawa pungatara

Ko te tikanga matua o te tukanga waikawa sulfuric ko te TiSO4 i hangaia ma te whakakore i te titanite me te waikawa sulfuric, i muri i te purenga me te kukū, TiO2 · H2O i hangaia e te hydrolysis o te wai titanium ka whiwhi i muri i te horoi, te tirotiro me te calcination.Ka mutu, ka taea te whiwhi hua rutile i muri i te tukatuka mata o nga hua.

2. Whakahau

Ko nga rawa matua e whakamahia ana i roto i te hanga o te titanium dioxide na roto i te chlorination ko te titanium slag teitei ranei te rutile (maori, horihori ranei) me te petroleum coke.Ko te hononga hanga motuhake ko te hinu coke hei kaihoko whakaheke tauhohenga, me te titanium slag teitei, rutile ranei i raro i te mahi o te pāmahana teitei ka puta te tauhohenga chlorination, te hanga o te titanium tetrachloride, me te mahi tonu o te pāmahana teitei, te titanium tetrachloride ki te titanium dioxide. , katahi ka taea te whakamahi maimoatanga.

 Te ahunga whakamua rangahau i roto i te whakaritenga1

3. Tikanga waikawa waikawa

I te 2002, i tukuna e te US-Based Altair Nanomaterials Company he patent mo te hanga o te titanium dioxide hou, ara, te tukanga titanium dioxide waikawa waikawa, e mohiotia ana ko te tukanga ANI.I roto i tenei tukanga, ka rewa te titanium concentrate ki te waikawa hauwai, ka whiwhi te otinga titanium dichlorooxygen (TiOCl2) i muri i te whakahekenga me te tangohanga tioata o FeCl2 me te totoka kore.Na, ko te kaihoko tangohanga e hanga ana i te waahanga wai tuarua ka taapirihia ki te wai titanium, a ko te tangohanga poke i kitea ma te whakawhiti papatipu interphase ma te whakamahi i te rereketanga o te whakarewatanga o nga katote whakarewa i roto i nga waahanga wai e rua.Ko te wai titanium kua purea i whakamarohia ma te rehu kia whiwhi matūriki TiO2 amorphous, katahi ka taea te whiwhi hua titanium dioxide ma te calcination me muri i te maimoatanga.

Te maimoatanga mata o te Titanium dioxide

Ko te titanium dioxide kaore he maimoatanga mata he kaha te mahi whakaahua, ka whakahekehia nga mea pararopi i raro i te rauropi ultraviolet, te whakaheke i te rama, te kowhai, te paura.Ko te parenga huarere he paerewa tono nui o te titanium dioxide.Ko te rangahau mo te hangarau maimoatanga mata o te titanium dioxide he awhina ki te whakapai ake i te kounga o te titanium dioxide.I tenei wa, ko te maimoatanga mata o te titanium dioxide ko te paninga pararopi me te paninga pararopi, kei roto ko te paninga pararopi te mea matua.

1. Te paninga parakore

1.1 Te Whakakikorua Silica

Ko te whakakikoruatanga hauhā i runga i te mata otitanium hauhāKa taea te aukati i te whakapiri tika ki te hunga pāpāho huri noa me te taiao o waho, me te whakapai ake i te aukati huarere o te titanium dioxide.

1.2 Te whakakikorua alumina

I roto i te tukanga o te titanium dioxide paninga alumina, hydrated alumina āta hanga he apa paninga i runga i te paparanga waho o matūriki TiO2.Ko te rereketanga o te wahanga o te waikura alumina i roto i te paparanga paninga he mea nui i raro i nga taiao waikawa-turanga rereke.I hangahia te kiri amorphous i raro i te ahua waikawa.Ka hangaia te kohatu Bayer i raro i nga tikanga kawakore.Na roto i te whakatewhatewha i te wahanga konumohe whakamaarama o te paparanga paninga, ka kitea e 60% te ahua o te kohatu Bayer me te 40% he hydrogel amorphous.I tino rerekee te kiato o te hanga kiriata i raro i nga tikanga rereke o te waikawa me te turanga.Mena he tere te whakakore, ka taea te hanga i tetahi kopaki hautai angiangi;Mena he puhoi te tere, ka puta he kiriata matotoru.I roto i te taiao waikawa, ka tere tere a Al-OH, ka tere te paparanga o waho o nga matūriki TiO2 ki te hanga i nga kiriata matotoru.Ko te taiao kawakore ka hanga i te kiriata wewete.

 Te ahunga whakamua rangahau i roto i te preparati2

1.3 Te paninga Zirconia

I tua atu i te whakapai ake i te parenga huarere, ko te pikinga o te kaha herenga interparticle ka taea hoki te whakapai ake i te pai o te whakamahi o te titanium dioxide.Hei tauira, ka taea e te paninga zirconia te whakapai ake i te kaha here i waenga i nga katote, me te whakamarumaru i nga tohu photoactive i runga i te mata o te titanium dioxide lattice, ka taea te hanga i nga hapa o te titanium dioxide ki tetahi waahanga, na reira ka pai ake te kanapa me te mauroa o te titanium. hauhā.

2. Te paninga pararopi

Ko te paninga pararopi ko te whakamahi i nga wairewa, i nga mea hono ranei penei i te paninga warotitanium hauhānga matūriki, te whakapai ake i te whakaurunga me te marara o nga matūriki titanium dioxide i roto i nga momo panui rereke, kia pai ake ai te mahi matawhānui o te titanium dioxide.Ko te urunga tinana me te hononga matū e rua nga momo hononga nui i waenga i nga matūriki titanium dioxide me nga kaihoko maimoatanga mata pararopi.


Wā tuku: Tihema-29-2022