Hauv kev lag luam hydrometallurgical, cov hlau tsis-ferrous raug rho tawm electrolytically. Cov txheej txheem kev daws teeb meem suav nrog cov tshuaj chloride, tshuaj sulfate, thiab cov tshuaj chloride sib xyaw. Cov graphite, txhuas alloy, thiab lead dioxide anodes siv nyob rau hauv ib txwm txoj kev muaj ntau yam teeb meem nyob rau hauv kev siv, tshwj xeeb tshaj yog cov teeb meem ntawm cov pa phem theem nrab. Nyob rau hauv xyoo tas los no, raws li kev tiv thaiv ib puag ncig tau dhau los ua nruj dua, titanium tau maj mam siv los ua cov khoom siv hlau oxide anode hloov.
Thaum cov tshuaj electrolytic sib txawv, cov roj precipitated los ntawm cov anode kuj txawv. Thaum lub anode ua haujlwm nyob rau hauv ib puag ncig sib txawv, cov khoom xyaw nquag ntawm ntau txheej txheej nrog cov kev ua haujlwm sib txawv kuj txawv.
1. Coated titanium anode rau electrolytic extraction ntawm non-ferrous hlau nrog tshuaj chloride
Thaum cov hlau tsis-ferrous yog electrolytically muab rho tawm los ntawm cov tshuaj no, cov tshuaj chlorine evolution tshwm sim ntawm lub anode. Lub active txheej yuav tsum tsis tshua muaj chlorine overpotential, zoo hluav taws xob conductivity, muaj zog chlorine corrosion kuj, thiab ntev anode kev pab cuam lub neej. Cov kev xav tau rau cov anode yog qhov siab. Peb lub tuam txhab tau kho tus naj npawb ntawm cov ntawv thov txheej raws li cov yam ntxwv ntawm kev daws teeb meem. Tom qab ib tug loj tus naj npawb ntawm cov tshuaj ntsuam xyuas qhov mob, peb tau xaiv thiab ntxiv ob lub ntsiab lus tseem ceeb los ua kom lub peev xwm anodizing thiab txuas ntxiv lub neej kev pab cuam. .
2. Coated titanium anode rau electrolytic extraction ntawm non-ferrous hlau los ntawm sulfate tov
Qhov kev daws teeb meem no feem ntau siv lead-silver anode rau electrolytic hlau deposition. Txawm li cas los xij, thaum lub sij hawm electrolysis, lub anode yuav yaj, uas tsis tsuas yog siv cov khoom siv titanium anode, tab sis kuj cuam tshuam rau lub neej kev pab cuam ntawm lub anode, thiab cov hlau lead yaj hauv cov tshuaj yuav ua rau cov cathode. Nws yuav ua rau kom cov hmoov lead impurity nyob rau hauv cov khoom thiab txo qhov zoo ntawm cov khoom. Thaum cov hlau yog electrodeposited los ntawm cov tshuaj sulfate, cov pa oxygen evolution tshwm sim feem ntau tshwm sim ntawm lub anode. Cov kev xav tau ntawm titanium anodes yog cov kev ua haujlwm siab electrocatalytic, ua haujlwm zoo tiv thaiv cov pa oxygen, thiab lub neej ntev anode ua haujlwm.
Txhawm rau kov yeej cov teeb meem uas muaj nyob rau hauv kev siv cov tshuaj anodes, tom qab xyoo ntawm kev ua haujlwm hnyav thiab kev tshawb nrhiav tas li, peb tau tsim cov titanium anode nrog cov qauv txheej tshiab, uas feem ntau siv Ir ua lub ntsiab tseem ceeb, ntxiv cov mis ternary lossis quaternary. txheej, thiab muaj zog electrocatalytic kev ua si. , zoo hluav taws xob conductivity, zoo txo cov cell voltage, thiab nyob rau tib lub sij hawm, kuj nce lub neej kev pab cuam ntawm lub anode.
3. Coated titanium anodes rau chloride thiab tov tov
Thaum lub sij hawm electrolysis nyob rau hauv ib tug tov system tov, oxygen thiab chlorine evolution tshwm sim tshwm sim ntawm lub anode. Thaum cov concentration ntawm sulfuric acid tov nce, cov pa evolution cov tshuaj tiv thaiv ntawm lub anode intensifies, uas yuav txo tau cov tshuaj chlorine tso tawm tam sim no efficiency thiab cuam tshuam lub anode kev pab cuam lub neej ntawm lub active txheej.
Nrog rau txoj kev loj hlob ntawm kev lag luam nyob rau hauv xyoo tas los no, cov khoom ntawm cov kev daws teeb meem tau dhau los ua ntau thiab ntau dua. Yuav ua li cas txhawm rau txhim kho kev ua tau zoo ntawm cov hlau electrodeposited, txo kev siv hluav taws xob, thiab tiv thaiv ib puag ncig ib txwm yog ib qho lus pom zoo rau peb cov khoom siv "ntsuab technology" kev tshawb fawb thiab kev loj hlob.
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