Yuav ua li cas yog Aluminium Oxide tsim

Aluminium oxide, tseem hu ua alumina, yog ib qho kev sib xyaw ua ke uas tau siv dav hauv ntau daim ntawv thov kev lag luam vim nws cov khoom siv zoo heev thiab tshuaj lom neeg. Hauv tsab ntawv blog no, peb yuav tshawb xyuas seb aluminium oxide yog tsim li cas thiab cov txheej txheem tsim khoom sib txawv koom nrog hauv nws cov khoom.

Aluminium oxideyog tsim los ntawm bauxite, ib tug ntxhia uas muaj nyob rau hauv abundance nyob rau hauv ntau qhov chaw ntawm lub ntiaj teb no. Bauxite yog thawj zaug mined thiab refined rau hauv alumina, cov hmoov dawb uas tau ua tiav los tsim cov txhuas oxide.

Ib txoj hauv kev zoo tshaj plaws ntawm kev tsim cov txhuas oxide yog cov txheej txheem Bayer, uas suav nrog cov kauj ruam hauv qab no:

Sib tsoo: Bauxite yog hauv av rau hauv cov hmoov zoo thiab tov nrog caustic soda, muaj zog alkaline compound.

Kev zom: Cov sib tov yog ces rhuab thiab stirred nyob rau hauv lub digester hlab ntsha nyob rau hauv kub thiab siab. Cov txheej txheem no dissolves alumina nyob rau hauv lub bauxite thiab converts nws mus rau hauv sodium aluminate.

Kev daws teeb meem: Sodium aluminate tov yog tom qab ntawd hloov mus rau lub tank, qhov twg cov impurities nyob rau hauv qab thiab cov kua ntshiab, hu ua cawv, raug cais thiab xa mus rau kev ua haujlwm ntxiv.

Dej nag: Cov dej cawv yog tom qab ntawd txias thiab kho nrog tshuaj ntau dua los tsim cov txhuas hydroxide, uas tom qab ntawd lim thiab ntxuav kom tshem tawm cov impurities seem.

Calcination: Cov txhuas hydroxide yog ces rhuab ntawm qhov kub thiab txias los tsim aluminium oxide, uas yog cov hmoov dawb zoo.

Lwm txoj hauv kev tsim cov txhuas oxide yog cov txheej txheem sintering, uas suav nrog cov kauj ruam hauv qab no:

Kev npaj: Bauxite yog crushed thiab tov nrog additives los tsim ib tug sib tov sib xyaw.

Sintering: Cov sib tov yog ces rhuab nyob rau hauv ib lub qhov cub ntawm qhov kub thiab txias kom yaj cov additives thiab khi cov bauxite hais ua ke.

Crushing: Cov khoom siv sintered yog tom qab ntawd crushed los tsim cov hmoov zoo.

Calcination: Cov hmoov yog ces rhuab ntawm kub kub los tsimaluminium oxide.

Hauv kev xaus, aluminium oxide yog tsim los ntawm bauxite siv cov txheej txheem tsim khoom sib txawv xws li txheej txheem Bayer thiab cov txheej txheem sintering. Cov txheej txheem no suav nrog kev sib tsoo, kev zom zaub mov, kev daws teeb meem, nag lossis daus, calcination, thiab sintering los tsim cov khoom kawg, uas yog cov hmoov dawb zoo siv dav hauv ntau daim ntawv thov kev lag luam.

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