♻️ Cov lus qhia ua dua tshiab: Cov lus qhia-rau-kauj ruam-kauj ruam
Cov hlau ua dua tshiab yog ib txoj hauv kev zoo rau kev rov pib dua cov khoom muaj nqis. Cov txheej txheem txo qhov xav tau rau nkauj xwb ore extraction thiab leters qis zog kev noj thiab co ₂ paug.
🔄 1. Collection
Qho tseem ceeb: Seem hlau los ntawm tsheb qub, khoom siv, vaj tse, cuab yeej, khoom siv, thiab kev tsim khoom pov tseg.
Hom:
Tom qab-Consumer Seem: Siv khoom lag luam (piv txwv li, tsheb, ntxhua khaub ncaws).
Tus Neeg Siv Khoom Siv Ua Ntej: Offcuts thiab cov seem ntawm cov chaw ua haujlwm.
🧲 2. Txheeb thiab sib cais
Sib cais sib nqus: Hlau yogferromagnetic, yog li cov hlau nplaum tau siv los cais nws los ntawm cov hlau uas tsis muaj hlau thiab lwm yam ntaub ntawv.
Los ntawm txhais tes / automated sorting: Cov paug tsis txaus (plastics, pleev xim, roj hmab) tau muab tshem tawm.
🔥 3. Shredding thiab kev ua
Daim ntawv hlau yog muab pov tseg rau hauv cov ntawv me me kom uaMelting ntau npaum li cas.
Feem ntau ua raubundles lossis balesrau kev thauj mus los yooj yim thiab cia.
🏭 4. Melting
Hlau tau melted nyob rau hauv aqho cub(feem ntau yog ib qho hluav taws xob ua hluav taws xob ua kom sov lossis induction rauv).
Kev kub siab (ntau dua los yog sib npaug rau 1538 degree) yog siv los liquefy tus hlau rau rov kho dua.
🧪 5. Kev ua kom huv
Impurities zoo li carbon, leej faj, lossis phosphorus tau muab tshem tawmTshuaj Lom Zem, fluxes, lossis los ntawmoxidation.
Alloy cov ntsiab (piv txwv li, cov pa roj carbon, chromium, npib tsib xee) yuav ntxiv yog tias tsim cov hlau.
🧊 6. Solidification thiab Casting
Cov hlau lim molified molten rau hauv cov pwm los ua:
Kev yaum
Tus ntses las
Tuav
Lossis lwm cov duab ua tiav ib nrab
🏗️ 7. Kev Tsim
Cov ntaub ntawv ntiab tawm no tau siv los ua cov khoom tshiab thiab cov hlau tshiab: cov kav dej, kev tsim kho, khoom siv tsheb, thiab lwm yam.
✅ Cov txiaj ntsig ntawm cov hlau ub
Txuag tau 60-70% ntawm lub zogPiv rau cov tsim cov hlau los ntawm ore.
Txo cov ntawv pov tseg thiab khib nyiab.
Txuag cov khoom siv ntuj(hlau ore, thee, limestone).
Tsim cov nqi nyiaj txiagthiab cov haujlwm nyob rau hauv kev rov ua hauj lwm.
