1. Dab tsi yog hlau silicon?
Hlau silicon, tseem hu ua industrial silicon, yog cov khoom ntawm smelting silicon dioxide thiab carbonaceous txo tus neeg sawv cev nyob rau hauv lub submerged arc rauv. Cov khoom tseem ceeb ntawm silicon feem ntau yog siab dua 98.5% thiab qis dua 99.99%, thiab cov impurities ntxiv yog hlau, txhuas, calcium, thiab lwm yam.
Hauv Suav teb, cov hlau silicon feem ntau muab faib ua ntau qib xws li 553, 441, 421, 3303, 2202, 1101, thiab lwm yam, uas yog qhov txawv raws li cov ntsiab lus ntawm hlau, txhuas thiab calcium.
2. Daim ntawv thov teb ntawm hlau silicon
Cov kev siv hauv qab ntawm cov hlau silicon feem ntau yog silicon, polysilicon thiab aluminium alloys. Nyob rau hauv 2020, Tuam Tshoj tus tag nrho noj yog hais txog 1.6 lab tons, thiab qhov kev siv piv yog raws li nram no:
Silica gel muaj cov kev xav tau siab ntawm cov hlau silicon thiab yuav tsum muaj qib tshuaj lom neeg, sib haum rau cov qauv 421 #, ua raws li polysilicon, feem ntau siv qauv 553 # thiab 441 #, thiab aluminium alloy yuav tsum tsawg heev.
Txawm li cas los xij, nyob rau hauv xyoo tas los no, qhov kev thov rau polysilicon hauv cov organic silicon tau nce, thiab nws qhov kev faib ua feem tau loj dua thiab loj dua. Qhov kev thov rau aluminium alloys tsis tau tsuas yog nce, tab sis tau txo. Qhov no kuj yog ib qho tseem ceeb uas ua rau lub peev xwm ntawm silicon hlau ntau lawm, tab sis qhov kev khiav hauj lwm qis heev, thiab muaj qhov tsis txaus ntawm cov qib siab hlau silicon hauv kev ua lag luam.
3. Cov xwm txheej ntau lawm hauv 2021
Raws li kev txheeb cais, txij lub Ib Hlis mus txog Lub Xya Hli 2021, Tuam Tshoj cov khoom siv hlau silicon xa tawm mus txog 466,000 tons, nce xyoo ib xyoos ntawm 41%. Vim tias tus nqi qis ntawm cov hlau silicon hauv Suav teb hauv ob peb xyoos dhau los, ua ke nrog kev tiv thaiv ib puag ncig thiab lwm yam laj thawj, ntau lub tuam txhab ua lag luam muaj nqi qis lossis raug kaw ncaj qha.
Xyoo 2021, vim muaj cov khoom txaus txaus, kev ua haujlwm ntawm cov hlau silicon yuav siab dua. Cov khoom siv hluav taws xob tsis txaus, thiab kev ua haujlwm ntawm cov hlau silicon yog qis dua li xyoo dhau los. Kev thov-sab silicon thiab polysilicon yog cov khoom tsis txaus rau xyoo no, nrog cov nqi siab, kev ua haujlwm siab, thiab kev thov ntau ntxiv rau cov hlau silicon. Cov yam tseem ceeb tau ua rau muaj qhov tsis txaus ntawm cov hlau silicon.
Plaub, yav tom ntej qauv ntawm hlau silicon
Raws li cov khoom siv thiab qhov xav tau qhov xwm txheej tau txheeb xyuas saum toj no, yav tom ntej qauv ntawm cov hlau silicon feem ntau yog nyob ntawm qhov kev daws teeb meem yav dhau los.
Ua ntej tshaj plaws, rau kev tsim cov zombie, tus nqi tseem siab, thiab qee qhov zombie ntau lawm yuav rov pib dua, tab sis nws yuav siv sijhawm qee lub sijhawm.
Qhov thib ob, tam sim no kev txwv fais fab hauv qee qhov chaw tseem tab tom mus. Vim tsis muaj hluav taws xob txaus, qee lub tsev tsim khoom silicon tau ceeb toom txog kev txiav hluav taws xob. Tam sim no, tseem muaj cov tshuab hluav taws xob silicon uas tau raug kaw, thiab nws nyuaj rau rov qab los rau lawv lub sijhawm luv.
Thib peb, yog tias tus nqi hauv tsev tseem siab, kev xa tawm yuav tsum txo qis. Tuam Tshoj cov hlau silicon feem ntau yog xa tawm mus rau cov tebchaws Esxias, txawm hais tias nws tsis tshua muaj xa tawm mus rau Tebchaws Europe thiab Asmeskas. Txawm li cas los xij, European industrial silicon ntau lawm tau nce vim tsis ntev los no cov nqi thoob ntiaj teb siab. Ob peb xyoos dhau los, vim yog Tuam Tshoj tus nqi hauv tsev kom zoo dua, Tuam Tshoj kev tsim cov hlau silicon muaj qhov txiaj ntsig zoo, thiab cov khoom ntim khoom loj. Tab sis thaum tus nqi siab, lwm thaj chaw kuj tseem yuav ua kom muaj peev xwm ntau lawm, thiab kev xa tawm yuav txo qis.
Tsis tas li ntawd, nyob rau hauv cov nqe lus ntawm downstream thov, yuav muaj ntau silicon thiab polysilicon ntau lawm nyob rau hauv lub thib ob ib nrab ntawm lub xyoo. Nyob rau hauv cov nqe lus ntawm polysilicon, lub peev xwm tsim tau nyob rau hauv lub quarter thib plaub ntawm lub xyoo no yog kwv yees li 230,000 tons, thiab tag nrho cov kev thov rau hlau silicon yuav tsum muaj txog 500,000 tons. Txawm li cas los xij, qhov kawg ntawm cov neeg siv khoom lag luam yuav tsis haus lub peev xwm tshiab, yog li tag nrho cov kev khiav hauj lwm ntawm lub peev xwm tshiab yuav txo qis. Feem ntau, qhov tsis txaus ntawm silicon hlau yuav tsum txuas ntxiv mus rau lub xyoo, tab sis qhov sib txawv yuav tsis loj tshwj xeeb. Txawm li cas los xij, nyob rau hauv ib nrab ntawm lub xyoo, silicon thiab polysilicon tuam txhab uas muag tsis koom nrog hlau silicon yuav ntsib teeb meem.