Vim li cas Aluminium Recycling Matters Environmentally
Aluminium recycling yog lub hauv paus ntawm kev lag luam ncig rau hlau. Kev rov ua dua tshiab yuav tsum tsuas yog kwv yees li 5 feem pua ntawm lub zog xav tau rau kev tsim khoom thawj zaug, sawv cev kwv yees li 95 feem pua ntawm kev txuag hluav taws xob, thiab zam txog 97 feem pua ntawm cov pa roj carbon monoxide emissions piv nrog smelting los ntawm ore. Aluminium khaws 100 feem pua ntawm nws cov khoom qub los ntawm kev rov ua dua tshiab, yog li cov hlau siv dua tsis yog cov khoom siv qis. Raws li kev lag luam-cov nuj nqis ib txwm, rov ua dua ib tonne ntawm txhuas txuag li 4 tonnes ntawm bauxite thiab txog 9 tonnes ntawm carbon dioxide emissions. Cov nqi rov qab thoob ntiaj teb twb dhau 90 feem pua rau tsheb thiab kev tsim kho txhuas, uas qhia tau tias lub voj voog ua haujlwm ntawm kev lag luam.
Post{0}}Cov neeg siv khoom siv txhuas tau sau thiab ua li cas
Kev sau thiab ua cov saw siv cov cuab yeej paub tab, paub tseeb. Kev sau cov tshuab hauv nroog cais cov kaus poom txhuas los ntawm cov dej khib nyiab sib xyaw nrog eddy - cov khoom cais tam sim no; shredded tsheb undergo dab dej- ntab sib cais kom rov qab tsheb txhuas; lub tsev demolition site siv handheld XRF analyzers rau ntawm - site alloy sorting; decoating tshem tawm cov organic paug los ntawm thermal lossis tshuaj kho ua ntej melting; thiab crucible melting ntawm ib ncig ntawm 750℃ua cov ntawv pov thawj thib ob alloy ingots rau cov khoom tshiab. Txhua kauj ruam yog tsim los khaws cov hlau zoo thiab txo qhov kev poob qis.
Cov kev sib tw hauv Kaw -Loop Recycling
Kaw lub voj voog aluminium tsis yog yam tsis muaj teeb meem. Tramp cov ntsiab lus xws li txhuas thiab bismuth sib sau ua ke nrog kev rov ua dua tshiab thiab yuav tsum tau tswj hwm. Mixed alloy kwj tuaj yeem nyuaj rau kev txheeb xyuas yam tsis muaj cov cuab yeej siv siab heev. Cov roj, xim thiab cov organic coatings tsim dross thaum lub sij hawm remelting yog tias tsis tshem tawm los ntawm pretreatment kom raug. Magnesium evaporation poob los hloov cov chemistry thaum lub sijhawm ua haujlwm siab -kub. Thiab downcycling tshwm sim thaum qib siab -qib aerospace alloys nkag mus rau cov khoom lag luam kwj es tsis txhob rov qab mus rau cov khoom siv wrought. Kev tswj cov kev cov nyom no yog qhov sib cais qhov tseeb kaw-loop recycling los ntawm kev yooj yim downcycling, thiab nws nyob ntawm qhov tseeb sorting, tswj melting thiab kev qhuab qhia alloy tswj.
Aluminium Kev Pabcuam rau Green Building Certification
Cov khoom siv txhuas txhawb kev tsim vaj tsev ntsuab hauv ntau txoj hauv kev. Cov ntsiab lus rov ua dua ua rau muaj txiaj ntsig rau LEED cov cai; thermal so hauv fenestration systems txo lub tsev siv zog; Cov ntawv siv lub ru tsev txias qhia txog hnub ci hluav taws xob thiab txo cov tshav kub hauv nroog; Lub teeb yuag aluminium qauv txo cov khoom siv hauv paus; thiab xaus- ntawm- txoj sia rov qab los ua kom txaus siab ncig- txoj cai kev lag luam hauv BREEAM kev ntsuas. Qhov twg ntsuab - cov qhab nia tsim tau raug lees paub, cov ntsiab lus rov ua dua thiab kev thov ib puag ncig yuav tsum tau txais kev txhawb nqa los ntawm cov ntaub ntawv tsim nyog kom cov ntawv pov thawj muaj tseeb.
Kev tsim kho tshiab uas txhim kho kev rov ua dua tshiab
Ntau lub technologies tau txhawb nqa kev ua haujlwm ntawm cov saw hlau rov ua dua tshiab. Laser-induced breakdown spectroscopy enables tiag -lub sij hawm alloy sorting ntawm tus nqi deb tshaj phau ntawv txheeb. Electrolytic refining tshem tawm impurities los ntawm cov khoom seem sib xyaw. Advanced dross processing recovers ib feem loj ntawm cov hlau los ntawm melting los ntawm - khoom. Cov txheej txheem taug qab digital txheeb xyuas cov ntsiab lus rov ua dua los ntawm cov khoom siv sib txuas, txhawb nqa cov ntawv pov thawj. Thiab hydrogen-raws li kev txo qis ntawm alumina, ib txoj hauv kev txhim kho smelting, lub hom phiaj los hloov cov pa roj carbon-raws li reductants kom tshem tawm carbon dioxide emissions ntawm thawj- theem tsim khoom. Ua ke cov thev naus laus zis no thawb txhuas mus rau lub voj voog tiag tiag, qis - cov khoom siv carbon.
FAQ
Q: Lub zog npaum li cas ntawm txhuas rov ua dua tshiab?
A: Kev rov ua dua tshiab tsuas yog siv li 5 feem pua ntawm lub zog uas xav tau rau kev tsim khoom thawj zaug, kwv yees li 95 feem pua siv, thiab zam txog 97 feem pua ntawm cov pa roj carbon monoxide emissions ntawm smelting los ntawm ore.
Q: Puas tuaj yeem rov ua dua txhuas ua kom zoo dua qub?
A: Yog. Aluminium khaws 100 feem pua ntawm nws cov khoom qub los ntawm kev rov ua dua tshiab, muab cov khoom seem cais, ntxuav thiab ua kom raug; recycled hlau tsis yog los ntawm cov khoom siv downgraded.
Q: Dab tsi yog qhov teeb meem tseem ceeb hauv kev kaw - voj voog aluminium recycling?
A: Tswj cov khoom tramp uas sib sau ua ke nrog kev rov ua dua, txheeb cov khoom sib xyaw kom raug, tshem tawm cov txheej txheem organic ua ntej melting, thiab tiv thaiv siab -qib seem los ntawm kev downcycled rau hauv cov khoom casting.
Q: Yuav ua li cas recycled aluminium txhawb tsev ntsuab ntawv pov thawj?
A: Cov ntsiab lus rov ua dua tuaj yeem pab txhawb rau LEED cov qhab nia, thiab kev rov qab los thaum kawg ntawm lub neej txhawb kev ncig - kev lag luam hauv cov phiaj xwm xws li BREEAM, muab cov ntaub ntawv thov.
Q: Dab tsi technologies txhim kho aluminium seem sorting?
A: Eddy-tam sim no cov khoom sib cais, dab dej -float cais, handheld XRF analyzers thiab laser-induced breakdown spectroscopy pab kom ceev thiab raug alloy txheeb xyuas ntawm cov ntsiab lus sib txawv hauv cov saw hlau.
Q: Dab tsi yog dross thiab vim li cas nws tseem ceeb hauv kev rov ua dua tshiab?
A: Dross yog cov oxide- nplua nuj los ntawm- cov khoom tsim thaum molten aluminium reacts nrog cua. Advanced dross processing recovers ib tug loj feem ntawm cov hlau los ntawm qhov no los ntawm - khoom, txo qhov poob thaum melting.
