Yuav ua li cas ua rau hlau silicon nrog microsilicon hmoov?
Oct 24, 2024Tso lus
Yuav ua li cas ua rau hlau silicon nrog microsilicon hmoov?
Microsilica hmoov (silica fume) feem ntau yog tsim nyob rau hauv hluav taws xob arc rauv los ntawm melting quartz xuab zeb, coke, thiab lwm yam silicon qhov chaw ntawm qhov kub thiab txias. Txawm li cas los xij, txhawm rau hloov cov hmoov microsilicon rau hauv cov xim hlau silicon, feem ntau nws yog qhov yuav tsum tau ua raws li cov kauj ruam hauv qab no:
1. Raw khoom npaj:
Xaiv high-purity micro-silica hmoov ua raw khoom los xyuas kom meej tias nws cov silica (SiO₂) cov ntsiab lus siab txaus, feem ntau ntau tshaj 90%.
Cov tshuaj txo qis, xws li coke lossis charcoal, kuj yuav tsum tau muab ntxiv los muab cov pa roj carbon monoxide xav tau los txo qis.
2. Mix:
Cov hmoov micro-silicon thiab txo tus neeg sawv cev yog sib xyaw ua ke. Qhov tsim nyog ntawm flux (xws li limestone) tuaj yeem ntxiv los pab yaj thiab txhim kho cov tshuaj tiv thaiv.
3.High kub melting:
Qhov sib tov yog muab tso rau hauv lub cub hluav taws xob arc thiab smelted siv qhov kub siab (txog 1800-2000 degree) tsim los ntawm arc.
4.Cooling thiab sau:
Molten silicon hlau yog txias, tshem tawm thiab tawg mus rau hauv hais. Nws tuaj yeem ua tiav ntxiv kom tshem tawm cov impurities.
5. Purification:
Raws li qhov xav tau, cov kauj ruam ua kom huv ntxiv, xws li pickling lossis lwm yam tshuaj kho mob, tej zaum yuav ua kom cov purity ntawm cov hlau silicon.
Los ntawm cov kauj ruam no, cov hmoov micro-silicon tuaj yeem hloov mus rau hauv cov xim hlau silicon kom tau raws li cov kev xav tau ntawm cov ntawv thov kev lag luam. Cov txheej txheem no yuav tsum tau ua nyob rau hauv qhov kub thiab txias thiab kev siv hluav taws xob siab, yog li qhov yuav tsum tau ua rau cov khoom siv thiab kev ua haujlwm siab.
