Koj puas paub Alumina tiag tiag?
May 19, 2022
Tso lus
Raws li kev siv sib txawv,Aluminamuab faib ua ob pawg: ib qho yog siv los ua raw khoom ntawm electrolytic aluminium alumina, hu ua metallurgical qib alumina, feem ntau ntawm alumina tsim nyob rau hauv lub ntiaj teb no yog siv rau electrolytic aluminium; Lwm yam uas tsis yog-metallurgical alumina siv nyob rau hauv ceramics, tshuaj, tshuaj thiab lwm yam teb, hu ua tshwj xeeb alumina, kuj hu ua tshuaj alumina. Kwv yees li 5 feem pua -7 feem pua yog siv rau lub hom phiaj no.
Alumina feem ntau yog tsim nrog bauxite li raw khoom. Alumina hydroxide yog tsim los ntawm Bayer txoj kev, sintering txoj kev thiab lwm yam txheej txheem, thiab ces dehydrated los ntawm cua sov decomposition. Nws yog cov hmoov dawb los yog xuab zeb. Vim tias cov txheej txheem bayer yog qhov yooj yim, kev siv hluav taws xob tsawg, cov txheej txheem luv luv, cov khoom zoo. Tam sim no, feem ntau alumina lag luam hauv ntiaj teb siv cov txheej txheem bayer ntau lawm. Raws li cov yam ntxwv ntawm Bauxite nyob rau hauv Suav teb, alumina ntau lawm technology nyob rau hauv Tuam Tshoj pib los ntawm sintering txheej txheem. Tom qab ntau tshaj 50 xyoo ntawm txoj kev loj hlob, nws tau tsim lub ntiaj teb no tus thawj technology theem, ua tiav cov txheej txheem technology thiab khoom system nrog diaspore bauxite li raw khoom alumina kev lag luam system.
Hauv cov ntsiab lus tseem ceeb ntawm bauxite, cov ntsiab lus ntawm alumina yog qhov siab tshaj plaws. Hauv cov ntsiab lus tseem ceeb ntawm bauxite, cov ntsiab lus ntawm alumina yog qhov siab tshaj plaws. Industrially, ferroalumina yog purified los ntawm Bayer txheej txheem rau hauv alumina:
Tshav kub thiab yaj cov ore nrog sodium hydroxide. Hlau oxide yog insoluble, silicon dioxide dissolves li silicate (Si (OH) 62-), thiab alumina dissolves li aluminate. Industrially, ferroalumina yog purified los ntawm Bayer txheej txheem rau hauv alumina:
Lim, kho cov kua qaub, alumina hydroxide nag lossis daus, thiab tom qab ntawd lim.
Cov amorphous dawb alumina hmoov tuaj yeem tau txais los ntawm kev kub ntxhov aluminium hydroxide.
Cov txheej txheem Hall-Xub converts rau txhuas.