Kev rov ua dua ntawm cov khib nyiab tooj liab thiab lwm yam tsis yog -ferrous hlau yog lub hauv paus ntawm kev tsim khoom niaj hnub thiab kev ruaj ntseg ib puag ncig. Raws li kev lag luam sib zog ua kom muaj txiaj ntsig zoo dua thiab txo qhov cuam tshuam ib puag ncig, cov txheej txheem rov ua dua tshiab rau cov hlau no tau hloov zuj zus. Kab lus no delves rau hauv cov txheej txheem tseem ceeb koom nrog hauv pretreatment thiab regeneration ntawm cov khib nyiab tooj liab, hais txog lawv qhov tseem ceeb hauv kev ruaj ntseg hlau rov qab.
Cov ntsiab lus tseem ceeb hauv kev siv tooj liab
Pretreatment ntawm khib nyiab tooj liab
Pretreatment ntawm cov khib nyiab tooj liab yog thawj kauj ruam tseem ceeb ua ntej txheej txheem smelting. Lub hom phiaj yog los ntxuav cov tooj liab los ntawm kev tshem tawm cov kab mob xws li roj, cov khoom tsis huv, thiab cov coatings. Qhov no ua kom cov tooj liab muaj qhov zoo txaus rau smelting lossis ua ntxiv.
Ib txoj hauv kev zoo tshaj plaws ntawm pretreatment yogmechanical kev sib cais, uas siv cov cuab yeej tshwj xeeb los cais cov tooj liab los ntawm lwm cov ntaub ntawv. Lub nruas- hom stripping tshuab feem ntau yog siv los ua cov xov hlau thiab cables. Cov tshuab no txiav cov cables rau hauv me me, strip lub tooj liab ntawm nws cov rwb thaiv tsev, thiab npaj nws rau smelting ncaj qha lossis tooj liab sulfate ntau lawm.
Lwm txoj kev siv dav yogqis -kub khov, uas cuam tshuam nrog cov kab mob khov ua kom cov rwb thaiv tsev nkig. Tom qab ntawd cov rwb thaiv tsev yog crushed, tso cai rau ib qho yooj yim sib cais los ntawm cov tooj liab hlau. Txoj kev no yog qhov tshwj xeeb tshaj yog muaj ntau yam thiab siv tau rau kev tuav ntau qhov ntau thiab tsawg.
Covchemical stripping txoj kevsiv cov kuab tshuaj organic kom yaj cov rwb thaiv tsev ntawm tooj liab hlau, tawm hauv cov tooj liab kom zoo. Cov txheej txheem no muab siab heev - tooj liab purity, tab sis nws yuav kim thiab yuav tsum tau ceev faj tuav cov tshuaj koom nrog.
HauvThermal decomposition txoj kev, rwb thaiv tsev yog hlawv tawm los ntawm pyrolysis, tawm hauv cov tooj liab hlau tom qab. Cov txheej txheem tsim tawm qee cov khoom lag luam, xws li tshuaj chlorine, uas tau ua tib zoo kho kom txo lawv cov kev cuam tshuam ib puag ncig.
Regeneration ntawm khib nyiab tooj liab
Tom qab pretreatment, pov tseg tooj liab yog npaj rau regeneration los ntawm smelting thiab refining. Muaj ob txoj hauv kev tseem ceeb ntawm kev rov tsim dua tshiab:kev siv ncaj qhathiabkev siv tsis ncaj.
Hauvkev siv ncaj qha, siab- tooj liab zoo yog smelted ncaj qha mus rau hauv refined tooj liab los yog alloys, ua kom nws npaj rau rov qab siv nyob rau hauv ntau yam kev siv. Hauvkev siv tsis ncaj, lub hauv paus hlau raug tshem tawm ntawm cov tooj liab, uas tom qab ntawd ua tiav rau hauv daim hlau anode. Cov anode daim hlau no dhau electrolysis, ua cov tooj liab ntshiab haum rau siab - thov kev thov.
Case Study: KESER Smelting Plant, Lub teb chaws Yelemees
Ib qho piv txwv ntawm kev siv tooj liab siab heev yog qhovKESER Smelting Coghauv Dortmund, Germany. Lub chaw no siv kev sib xyaw ua ke ntawm ob-theem thiab peb- theem txheej txheem los txhim kho kev siv hluav taws xob thiab ua kom cov hlau rov qab zoo dua. Ua ntau tshaj 115,000 tons ntawm electrolytic tooj liab txhua xyoo, KESER tsim ntau yam ntawm cov khoom lag luam, suav nrog tooj liab hlau ingots thiab tooj liab sulfate.
Ntawm KESER cov nroj tsuag, cov seem tooj liab raug txheeb raws qib thiab daim ntawv, ua kom muaj txiaj ntsig zoo. Cov nroj tsuag ntiav blast furnaces thiab convertors ua cov tooj liab, ua dub tooj liab nrog 75-85% purity. Cov tooj liab dub no tom qab ntawd ua kom zoo dua siv cov pa oxygen-based oxidation thiab txo cov txheej txheem.
Nyob rau hauv seem electrolytic refining, KESER siv titanium anode daim hlau thiab ib tug stepped anode ncej los txhim kho tam sim no efficiency (95-97%) thiab txo hwj chim noj, siv xwb 250 kWh ib tuj tooj liab.
Vim li cas thiaj xaiv peb?
NtawmJiuying, peb tau cog lus los muab kev ua haujlwm zoo, eco-cov kev daws teeb meem zoo rau kev rov ua dua thiab rov tsim dua tshiab ntawm cov hlau tsis yog-ferrous, nrog rau kev tsom mus rau tooj liab. Nrog ntau tshaj 10 xyoo ntawm kev lag luam kev lag luam, peb muab cov kev pab cuam tsim los ua kom tau raws li koj cov kev xav tau tshwj xeeb.
Peb cov kws tshaj lij hauv kev siv tooj liab ua kom ntseeg tau tias koj tau txais - zoo, kev daws teeb meem ib puag ncig rau koj lub lag luam. Txawm hais tias koj tab tom nrhiav rau cov txheej txheem pretreatment zoo lossis cov thev naus laus zis tshiab, peb tuaj yeem pab txhim kho koj cov txheej txheem thiab txhim kho tus nqi rov qab.
Tiv tauj peb hnub nokom paub ntau ntxiv txog yuav ua li cas peb cov kev daws teeb meem tuaj yeem txhim kho koj cov kev ua haujlwm tooj liab rov ua dua tshiab thiab txhim kho koj cov kev siv dag zog kom ruaj khov.
