Yuav ua li cas yog metallic silicon? Tag nrho cov txheej txheem ntawm metallic silicon smelting.
Cov txheej txheem smelting ntawm cov xim hlau silicon feem ntau suav nrog kev npaj cov khoom siv raw, pub mis, smelting, cub tawg thiab txias. Cov hauv qab no yog cov kauj ruam ntxaws:
1. Raw khoom npaj
Kev xaiv cov khoom siv raw: Cov khoom siv tseem ceeb ntawm cov xim hlau silicon yog high-purity quartz lossis silica, thiab carbonaceous txo cov neeg ua haujlwm xws li coke, roj av coke, thiab lwm yam yuav tsum tau ntxiv rau tib lub sijhawm.
Raw khoom crushing thiab tshuaj ntsuam: Quartz thiab txo cov neeg ua hauj lwm yuav tsum tau crushed thiab soj ntsuam mus rau ib tug haum particle loj rau uniform pub thiab txaus cov tshuaj tiv thaiv.
Batching: Cov khoom xyaw yog proportioned los ua qhov piv ntawm silicon thiab carbon yog kom ntseeg tau ruaj khov cov tshuaj tiv thaiv.
2. Pub
Siv lub tsheb pub mis los yog lub hopper kom xa cov khoom raw mus rau sab saum toj ntawm lub qhov cub smelting, thiab maj mam ntxiv rau hauv lub cub tawg raws li cov txheej txheem pub noj ntau zaus thiab ntau npaum li cas los xyuas kom meej qhov txuas ntxiv ntawm cov txheej txheem smelting.
3. Smelting
Cov tshuaj tiv thaiv kub kub: Smelting yog ua nyob rau hauv ib qho hluav taws xob arc rauv los yog submerged arc rauv. Qhov kub hauv qhov cub yog feem ntau ntawm 1600 degree thiab 2000 degree.
Cov tshuaj tiv thaiv tshuaj: Thaum kub kub, cov pa roj carbon monoxide reacts chemically nrog silica los tsim cov hlau silicon thiab carbon monoxide gas:
SiO2+2C → Si+2CO
Gas kev kho mob: Cov pa roj carbon monoxide generated yuav raug tso tawm, thiab ib qho kev kho roj cua feem ntau yog nruab los txo cov pa phem.
4. Kev ua haujlwm ramming
Thaum lub sij hawm smelting txheej txheem, lub tsheb ramming los yog ramming khoom yog siv los compact los yog ram tus nqi los xyuas kom meej tus nqi ceev, tiv thaiv voids, thiab txhawb lub uniformity ntawm cov tshuaj tiv thaiv txo.
5. Tso tawm
Tom qab smelting, lub molten metallic silicon raug thawb mus rau qhov chaw nres nkoj tawm los ntawm ib tug pusher, los yog lwm txoj kev tso tawm yog siv los tso cov hlau silicon.
Slag cais: Thaum tso tawm, impurity slag yuav raug tsim. Feem ntau, kev siv lub cev yog siv los cais cov hlau silicon thiab slag kom tau cov kua dej ntshiab silicon.
6. Cua txias thiab casting
Kev ua kom txias: Cov kua hlau silicon hlau tom qab tso tawm yog txias ib txwm nyob rau hauv ib lub tank txias los yog txias sai sai los ntawm cua txias lossis dej txias.
Ingot molding: Tom qab txias, cov hlau silicon yuav tsim cov blocks lossis ingots, uas yooj yim rau kev thauj mus los thiab kev muag khoom tom ntej.
7. Kev soj ntsuam cov khoom tiav
Kev ntsuam xyuas zoo yog ua los xyuas kom meej tias cov purity, impurity cov ntsiab lus thiab lub cev ntawm cov hlau silicon ua tau raws li cov qauv.
8. Kev kho cov pa phem thiab slag
Cov pa khib nyiab thiab slag tsim thaum lub sij hawm smelting yuav tsum tau kho kom tau raws li kev tiv thaiv ib puag ncig. Cov pa khib nyiab feem ntau yog kho los ntawm cov hnab lim lossis ntxhua khaub ncaws, thiab cov slag raug siv los yog muab pov tseg.
Cov cuab yeej tseem ceeb
Smelting rauv (arc furnace, submerged arc rauv)
Rauv them tsheb
Rauv ramming tsheb
Materail thawb tsheb rau qhov cub
Txias qhov system
Kev kho cov pa khib nyiab
Los ntawm cov txheej txheem saum toj no, silicon dioxide nyob rau hauv cov khoom siv raw tuaj yeem txo qis rau cov xim hlau silicon. Cov khoom tiav yog tsuas yog siv nyob rau hauv alloy manufacturing, electronics kev lag luam thiab tshuaj lom neeg kev lag luam.
