Menene titanium dioxide?
Babban sinadarin titanium dioxide shine TIO2, wanda muhimmin sinadarin sinadarai ne marasa tsari a siffar farin foda. Ba ya da guba, yana da farin haske da haske sosai, kuma ana ɗaukarsa a matsayin mafi kyawun launin fari don inganta farin abu. Ana amfani da shi sosai a masana'antu kamar su rufi, robobi, roba, takarda, tawada, yumbu, gilashi, da sauransu.
Ⅰ.Zane-zanen sarkar masana'antar titanium dioxide:
(1）Sama da sarkar masana'antar titanium dioxide ya ƙunshi kayan aiki, ciki har da ilmenite, titanium concentrate, rutile, da sauransu;
(2）Tsakiyar hanya tana nufin samfuran titanium dioxide.
(3) Abin da ke ƙasa shine filin amfani da titanium dioxide.Ana amfani da titanium dioxide sosai a fannoni daban-daban kamar su shafi, robobi, yin takarda, tawada, roba, da sauransu.
Ⅱ. Tsarin lu'ulu'u na titanium dioxide:
Titanium dioxide wani nau'in mahaɗi ne mai siffar polymorphous, wanda ke da siffofi uku na crystal a yanayi, wato anatase, rutile da brookite.
Rutile da anatase duka suna cikin tsarin lu'ulu'u na tetragonal, waɗanda suke da karko a yanayin zafi na yau da kullun; brookite yana cikin tsarin lu'ulu'u na orthorhombic, tare da tsarin lu'ulu'u mara ƙarfi, don haka ba shi da wani amfani a masana'antu a yanzu.
Daga cikin tsarin guda uku, matakin rutile shine mafi karko. Matakin Anatase zai canza zuwa matakin rutile sama da 900°C ba tare da wata matsala ba, yayin da matakin brookite zai canza zuwa matakin rutile sama da 650°C ba tare da wata matsala ba.
(1) Rutile phase titanium dioxide
A cikin rutile phase titanium dioxide, ƙwayoyin Ti suna tsakiyar layin lu'ulu'u, kuma ƙwayoyin oxygen guda shida suna nan a kusurwoyin titanium-oxygen octahedron. Kowace octahedron tana da alaƙa da octahedron guda 10 da ke kewaye (gami da kusurwa takwas da gefuna biyu da ke raba juna), kuma ƙwayoyin TiO2 guda biyu suna samar da ƙwayar naúrar guda ɗaya.
Zane-zanen tsarin ƙwayar lu'ulu'u ta rutile phase titanium dioxide (hagu)
Hanyar haɗa titanium oxide octahedron (dama)
(2) Anatase phase titanium dioxide
A cikin lokacin anatase titanium dioxide, kowace titanium-oxygen octahedron tana da alaƙa da octahedron guda 8 da ke kewaye (gefuna 4 da kuma kusurwa 4 da ke raba juna), kuma ƙwayoyin TiO2 guda 4 suna samar da tantanin halitta guda ɗaya.
Zane-zanen tsarin ƙwayar lu'ulu'u ta rutile phase titanium dioxide (hagu)
Hanyar haɗa titanium oxide octahedron (dama)
Ⅲ. Hanyoyin Shiri na Titanium Dioxide:
Tsarin samar da titanium dioxide ya kunshi tsarin sinadarin sulfuric acid da kuma tsarin chlorine.
(1) Tsarin sinadarin sulfuric acid
Tsarin sinadarin sulfuric acid na samar da sinadarin titanium dioxide ya ƙunshi amsawar acid na foda ƙarfe na titanium tare da sinadarin sulfuric acid mai ƙarfi don samar da sinadarin titanium sulfate, wanda daga nan ake samar da sinadarin hydrolyze don samar da sinadarin metatitanic acid. Bayan an narkar da sinadarin calcium da kuma niƙa shi, ana samun samfuran titanium dioxide. Wannan hanyar na iya samar da anatase da rutile titanium dioxide.
(2) Tsarin samar da sinadarin chlorine
Tsarin chlorine na samar da titanium dioxide ya ƙunshi haɗa rutile ko high-titanium slag foda da coke sannan a yi chlorine mai zafi don samar da titanium tetrachloride. Bayan iskar oxygen mai zafi, ana samun samfurin titanium dioxide ta hanyar tacewa, wanke ruwa, busarwa, da niƙa. Tsarin chlorine na samar da titanium dioxide zai iya samar da samfuran rutile ne kawai.
Yadda za a bambanta sahihancin titanium dioxide?
I. Hanyoyin Jiki:
(1）Hanya mafi sauƙi ita ce a kwatanta yanayin ta hanyar taɓawa. Karyataccen titanium dioxide yana jin laushi, yayin da ainihin titanium dioxide yana jin ƙaiƙayi.
(2）Idan ka wanke da ruwa, idan ka sanya wani sinadarin titanium dioxide a hannunka, na jabu yana da sauƙin wankewa, yayin da na gaske ba shi da sauƙin wankewa.
(3）A ɗauki kofi ɗaya na ruwa mai tsafta a zuba sinadarin titanium dioxide a ciki. Wanda ke shawagi a saman ruwa na gaske ne, yayin da wanda ke kwance a ƙasan ruwa na jabu ne (wannan hanyar ba za ta yi aiki ga samfuran da aka kunna ko aka gyara ba).
(4）A duba yadda yake narkewa a cikin ruwa. Gabaɗaya, titanium dioxide yana narkewa a cikin ruwa (banda titanium dioxide wanda aka ƙera musamman don robobi, tawada, da wasu titanium dioxide na roba, waɗanda ba sa narkewa a cikin ruwa).
II. Hanyoyin sinadarai:
(1) Idan aka ƙara garin calcium: Ƙara sinadarin hydrochloric acid zai haifar da wani irin ƙarfi tare da ƙara mai ƙarfi, tare da samar da kumfa mai yawa (saboda sinadarin calcium carbonate yana amsawa da acid don samar da carbon dioxide).
(2) Idan aka ƙara lithopone: Ƙara sinadarin sulfuric acid mai narkewa ko hydrochloric acid zai haifar da warin ƙwai da ya ruɓe.
(3) Idan samfurin yana da sinadarin hydrophobic, ƙara sinadarin hydrochloric ba zai haifar da wani abu ba. Duk da haka, bayan an jika shi da ethanol sannan a ƙara sinadarin hydrochloric, idan aka samar da kumfa, hakan yana tabbatar da cewa samfurin yana ɗauke da sinadarin calcium carbonate mai rufi.
III. Akwai kuma wasu hanyoyi guda biyu masu kyau:
(1) Ta hanyar amfani da irin wannan dabarar PP + 30% GF + 5% PP-G-MAH + 0.5% foda titanium dioxide, ƙarancin ƙarfin kayan da aka samo, haka nan ingancin titanium dioxide (rutile) yake.
(2) Zaɓi resin mai haske, kamar ABS mai haske tare da foda titanium dioxide 0.5%. Auna watsa haskensa. Da zarar hasken ya yi ƙasa, haka nan foda titanium dioxide ya yi daidai.
Lokacin Saƙo: Mayu-31-2024
