Aikin Farin Alumina a cikin Zuba Jari
1. Kayan Zuba Jari na Zane-zanen Harsashi
Farin alumina mai haɗeAna samar da shi ta hanyar haɗa alumina mai inganci a yanayin zafi sama da 2000°C. Yana bayar da tsarki na musamman (α-Al₂O₃abun ciki > 99–99.6% da kuma babban rashin ƙarfin hali na 2050°C–2100°C, tare da ƙarancin ma'aunin faɗaɗa zafi (kimanin 8)×10⁻⁶/°C). Waɗannan kaddarorin sun sanya shi kyakkyawan madadin yashi na gargajiya na zircon a matsayin babban kayan harsashi don saka hannun jari. Babban daidaiton barbashi (rarraba girman hatsi > 95%) da kuma kyakkyawan watsawa suna taimakawa wajen ƙirƙirar ƙira mai kauri da ƙarfi, yana inganta ƙarewar saman simintin da daidaiton girma yayin da yake rage yawan lahani.
2. Ƙarfafa Mold
Tare da taurin Mohs na 9.0 da kuma kyakkyawan riƙe ƙarfin zafin jiki mai kyau (yana riƙe da aminci sama da 1900)°C),farin alumina mai haɗeyana ƙara tsawon rayuwar mold da 30–50%. Idan aka yi amfani da shi a cikin molds ko cores don ƙarfen siminti, ƙarfen siminti, ko ƙarfe mara ƙarfe, yana tsayayya da zaizayar ruwa ta ƙarfe yadda ya kamata kuma yana rage yawan gyare-gyare da kulawa.
Fa'idodin Farin Alumina Mai Haɗawa
(1) Kwanciyar Hankali Mai Yawan Zafi
Farin alumina mai haɗeYana ba da kyakkyawan kwanciyar hankali na thermochemical yayin aikin simintin. Matsakaicin faɗaɗa zafinsa ya kai kusan kashi ɗaya bisa uku na kayan gargajiya, wanda ke taimakawa hana tsagewar mold ko lalacewar siminti saboda canjin zafin jiki kwatsam. Ƙarancin juyin halittar iskar gas (sakin iskar gas < 3 ml/g) yana rage gurɓataccen rami da lahani na ramin iska.
(2) Ingancin Kammalawa a Sama
Idan aka yi amfani da shi azaman foda mai laushi (girman hatsi 0.5)–45μm),farin alumina mai haɗeyana samar da daidaito, daidai gwargwado wanda zai iya cimma ƙaiƙayin saman simintin Ra < 0.8μm. Yanayin kaifinsa (ƙarfin karyewa ƙasa da 5%) yana tabbatar da dorewar ingancin yankewa da kuma sakamakon gogewa mai ɗorewa.
(3) Daidaita Tsarin Aiki
Muna bayar da girman hatsi masu daidaitawa daga F12 zuwa F10000 don dacewa da hanyoyin yin siminti daban-daban:
Matsakaici masu kauri (F12)–F100): Don sakin mold a cikin tsari mai rikitarwa, yana ƙara yawan nasarar rushewa da sama da 25%.
Maki mai kyau (F220)–F1000): Don samar da madaidaicin tsakiya na yumbu tare da juriya mai ƙarfi kamar yadda ya kamata±0.1 mm.
3. Darajar Inganta Tsarin
(1) Ingantaccen Kuɗi
Maye gurbin yashi mai siffar zircon dafarin alumina mai haɗe zai iya rage farashin kayan aiki da 30–Kashi 40% kuma yana ba da damar rage kauri harsashi da kashi 15.–20% (kauri na yau da kullun na harsashi: 0.8–1.2 mm), yana rage zagayowar ginin harsashi.
(2) Fa'idodin Muhalli
Tare da ƙarancin sinadarin ƙarfe mai nauyi (< 0.01%), farin alumina da aka haɗa ya cika ƙa'idodin muhalli na ISO 14001. Yashi mai shara 100% ana iya sake amfani da shi kuma ana iya sake amfani da shi wajen samar da ƙarfe mai ƙarfi.
Aikace-aikacen da aka Tabbatar
An yi amfani da wannan kayan sosai a fannoni masu inganci kamar ruwan wukake na injinan sararin samaniya da kuma simintin daidai gwargwado na na'urorin likitanci. Yawancin lokuta suna nuna cewa yana iya ƙara ƙimar wucewar samfur daga kashi 85% zuwa kashi 97%.