Cov txheej txheem ntws ntawm cov kuab tshuaj rho tawm txoj kev rau electrothermal raj electroplating
Tso lus
Cov txheej txheem ntws ntawm cov kuab tshuaj rho tawm txoj kev rau electrothermal raj electroplating
Kev siv N510 kerosene H2SO4 plaub theem countercurrent extraction txheej txheem tuaj yeem ua tiav cov tooj liab rov qab ntawm 99 feem pua, thaum poob ntawm coexisting npib tsib xee thiab zinc yuav luag xoom. tooj liab yog zoo tu qab tso nyob rau hauv daim ntawv ntawm cov tshuaj reagent CuSO45H2O los yog electrolytic high-purity tooj liab thaum lub sij hawm tus txheej txheem no. Kev txheeb xyuas kev lag luam ua ntej qhia tau hais tias nws cov nqi tsim tawm offsets cov nqi khiav lag luam txhua hnub thiab muaj txiaj ntsig kev lag luam siab. Tag nrho cov txheej txheem yog qhov yooj yim, ua haujlwm ncig, thiab ua kom muaj kuab lom me me, ua rau muaj txiaj ntsig zoo ib puag ncig [16].
Txawm li cas los xij, cov txheej txheem rho tawm thiab cov cuab yeej siv tau yooj yim thiab kim, thiab cov txheej txheem xav tau kev txhim kho ntxiv.
Txheej txheem extraction
Nyob rau xyoo 1970, Sweden tau tshaj tawm cov txheej txheem H-MAR thiab Am MAR "leaching solvent extraction" cov txheej txheem, uas ua tiav qhov rov qab ntawm 70 feem pua rau tooj liab, zinc, thiab npib tsib xee hauv electroplating sludge thiab tau tsim ib qho kev lag luam. Raws li cov txheej txheem no, Tebchaws Meskas tau txhim kho kom ua tiav qhov kev rov qab los ntawm ntau dua 90 feem pua rau tooj liab thiab npib tsib xee. Rau lub hauv paus no, Zhu Wanpeng et al. [16] tau txhim kho ntxiv los ntawm thawj leaching tooj liab uas muaj electroplating sludge nrog ammonia dej, thiab suppressing feem ntau ntawm cov hlau thiab chromium nyob rau hauv leaching residue. Tom qab ntawd, ammonia system pub kua yog hloov mus rau hauv sulfuric acid system pub kua rau kev rho tawm. Tom qab kev rho tawm thiab thim rov qab, cov khoom siv tooj liab rov qab tuaj yeem tau txais, thiab cov khoom siv hlau tsim tau tuaj yeem tov nrog sulfuric acid rau kev rov ua dua tshiab. Cov kua membranes muaj xws li cov tsis muaj cov kua membranes, cov cab kuj ua kua membranes, immersion hom kua daim nyias nyias, thiab lwm yam. Thaum cov kua membrane yog dispersed nyob rau hauv lub leaching tov ntawm electroplating sludge, lub mobile cab kuj xaiv chelates hnyav hlau ions ntawm lub interface ntawm lub txheej txheej ntawm lub membrane, thiab ces diffuses nyob rau hauv cov kua membrane kom dissociate ntawm lub interface hauv daim nyias nyias.
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