Calcined Alumina Fine Hmoov

Cov nyhuv ntawm qhov loj me ntawm cov hmoov alumina hmoov rau ntawm cov khoom ntawm activated alumina micropowder (-Al{1}}O_3 micropowder) tau kawm. Cov hmoov alumina muaj (nruab nrab txoj kab uas hla ntawm 8{14}} μm) tau siv los ua cov khoom siv raw los zom nws, thiab qhov nruab nrab txoj kab uas hla ntawm 50 thiab 30 tau txais. , 10,5μm hmoov zoo, cov hmoov alumina muaj ua ntej thiab tom qab sib tsoo tau calcined ntawm 1 320 degree rau 5 h kom tau txais activated alumina micropowder. Cov txiaj ntsig ntawm cov khoom sib txawv ntawm alumina hmoov particle qhov ntau thiab tsawg ntawm microstructure thiab cov khoom ntawm activated alumina micropowder tau kawm. Cov txiaj ntsig tau pom tias qhov loj me me ntawm cov khoom siv alumina hmoov muaj kev cuam tshuam zoo rau cov nplej morphology ntawm activated alumina micropowder. Thaum txoj kab uas hla tsawg dua 10 μm, -Al_2O_3 nplej ntawm 0.3 ~ 1.0 μm yog tsim tom qab calcination, uas yog puag ncig, kheej kheej thiab zoo dispersed. Nrog rau qhov txo qis ntawm qhov loj me me ntawm kev lag luam alumina hmoov, theem inversion tus nqi ntawm -Al{19}}O_3 nce. , thiab qhov tseeb qhov ceev yuav nce zuj zus. Nrog rau qhov txo qis ntawm qhov loj me me ntawm cov khoom siv alumina hmoov, kev sib tsoo ntawm -Al_2O_3 hmoov tom qab hlawv tau yooj yim dua, nws dispersibility yuav zoo dua, thiab nws muaj fluidity zoo dua.