Lub hauv paus ntsiab lus ntawm deplating ntawm Resistant ntsev S thiab nws cov cawv yog kawm, thiab fenton oxygen / tshuaj txoj kev yog saws los cuam tshuam nrog deplating pov tseg uas muaj.Tawm tsam S. Cov txiaj ntsig tau pom tias txoj kev tuaj yeem tshem tawm 70% chroma.
Tawm tsam Syog // nitrate //ji// Ben //.Tawm tsam Stuaj yeem yaj lub txheej, tab sis tsis corrode lub substrate, thiab muaj kev tiv thaiv zoo ntawm lub substrate. Nws cov txheej txheem npaj yog kwv yees li hauv qab no:
C6H6 - HNO3.H2SO4 sib xyaw nitration - nitrate. Base Ben - trioxygen. Sulphurization. Sulfonation - ntsev rau kev tiv thaiv.
1. Lub hauv paus ntsiab lus ntawm deplating anti-dye ntsev S los ntawm electroplating
Hauv kev lag luam electroplating, tshwj xeeb tshaj yog nyob rau hauv cov lag luam ntawm hlau plating, anti-dye ntsev S yog tsuas yog siv rau npib tsib xee, kub thiab lwm yam plating, tab sis kuj lug siv nyob rau hauv lub pre-electroplating txheej txheem.
Tam sim no, lub ntsiab deplating txheej txheem: tov nitrate. Acid method, electrolysis method, anti-dye salt S method. Ntawm lawv, qhov sib txawv ntawm QING thiab tsis-Qing deplating txheej txheem nyob rau hauv anti-dye ntsev S txoj kev yog seb NaCN siv los ua cov complexing agent. Yog li ntawd, anti-dye ntsev S tseem yog cov khoom siv zoo ntawm txhua yam nickel tshem tawm cov neeg ua haujlwm ntawm kev ua lag luam tam sim no.
1, deplating tus neeg sawv cev cov khoom xyaw
2, lub zog ntawm electroplating anti-dyeing ntsev S
Cov xim ntawm cov tshuaj deplating zoo ib yam li cov dej khib nyiab uas muaj chromium-concentration, thiab cov tshuaj deplating muaj cov ntsiab lus siab ntawm QING, uas yooj yim rau kev ua yuam kev tawm mus rau hauv cov dej khib nyiab chromium. Dej, ua rau. Tus Thawj Coj /.. yog li.
Txij li cov xim tshwm sim los ntawmTawm tsam SNws yog qhov nyuaj heev los tshem tawm, nws tsis tuaj yeem raug tshem tawm los ntawm cov tshuaj pretreatment ntawm electroplating cov dej khib nyiab xws li cov tshuaj chlorine thiab cov pa oxygen, uas ua rau cov xim daj loj ntawm cov dej ntws tawm, uas cuam tshuam rau cov dej tawm thiab ua rau lub nra ntawm cov txheej txheem kho membrane rau nruab nrab. dej rov siv dua. Lub teeb daj tshwm sim ua rau sib zog nyob rau hauv acidic tej yam kev mob, darker nyob rau hauv nruab nrab thiab alkaline tej yam kev mob, thiab darker nyob rau hauv cov xim ntawm daj mus rau liab tom qab lub teeb raug.
3. Kev kho cov khoom pov tseg>/ dej uas muaj tshuaj tiv thaiv dye ntsev
Cov dej yuav tsum tau muab sib cais thiab kho nyias. Tam sim no, tsis muaj ntau txoj hauv kev los kho cov dej, xws li cov pa oxygen / chlorination zoo tib yam. Sodium acid, oxygen, thiab lwm yam tsis tuaj yeem qhib cov nitrate. Ben rings hauv paus Ben thiab Benamine. Activated carbon adsorption thiab flocculant nag lossis daus txoj kev tsis tuaj yeem tshem tawm nitrate. Base Ben thiab benamine, tab sis nrog leej faj. Ferrous acid tuaj yeem npog ib feem ntawm cov xim, tab sis yuav muaj xim tshwm sim, yog tias cov dej tsis loj, nws tuaj yeem diluted nrog cov dej tawm tom qab tso tawm.
Fenton oxidation txheej txheem tau siv los kho cov khib nyiab./ dej, thiab cov xim tshem tawm ntawm H2O2 tau kawm. Tag nrho cov txheej txheem tau muab faib ua ob theem: pretreatment thiab Fenton oxygenation.
3.1 Properties of deplating tov
3.2 pretreatment
Raws li deplating pov tseg /. Dej muaj cov ntsiab lus siab ntawm QING, nws yuav tsum tau pretreated. Tag nrho cov txheej txheem tau muab faib ua ob theem:
1) QING tau tawg los ntawm txoj kev oxygen chloride.
2) PAC, PAM flocculation nag lossis daus.
3.3 Fenton oxidation
Cov txiaj ntsig tau pom tias Fenton oxidation txoj kev tuaj yeem tshem tawm txog 70% ntawm chroma, thiab ntau yam kev txhim kho Fenton oxidation, xws li tooj liab plating hlau filings es tsis txhob sulfur. Ferrous acid li catalyst tuaj yeem txhim kho cov catalytic efficiency, tab sis tseem tsis tuaj yeem tshem tawm tag nrho, yog li cov deplating pov tseg uas muaj cov tshuaj tiv thaiv dye ntsev S / . Dej tseem yog qhov nyuaj.
4 xaus
Deplating pov tseg suav nrog Electroresist S? / Cov xim ntawm cov dej yog qhov nyuaj heev kom tshem tawm, uas yog qhov tseem ceeb ua rau cov effluent tig daj, thiab xim yog tob dua tom qab lub teeb, uas cuam tshuam rau qhov zoo ntawm cov dej / dej. Nyob rau hauv lub xub ntiag ntawm ib tug loj tus naj npawb ntawm ferrous ion los npog ib feem ntawm cov xim, tab sis yuav rov qab mus rau qhov tshwm sim ntawm cov xim, siv fenton oxidation txheej txheem yuav tshem tawm 70% ntawm cov xim, tseem tsis tau kiag li tshem tawm, siab oxygen / technology thiab cov tus nqi siab ntawm tus nqi siv tiag tiag yog qhov tsawg, yog li txhawm rau nrhiav cov tshuaj reagents thiab lwm yam plating tshuab rau cov kev taw qhia los daws qhov teeb meem.
Post lub sij hawm: May-23-2022