Yuav Ua Li Cas Kub Rov Qab Los ntawm Ore? Txoj kev ua kom tiav Extraction
Cov khawv koob ntawm cov mining kub tshwm sim thaum pom cov khoom kub tsis pom nyob rau hauv ib qho kev daws teeb meem ua kub ib zaug ntxiv. Covtxheej txheem kub rov qabsiv chemistry ntse thiab qib siab metallurgy los sau txhua qhov muaj txiaj ntsig ntawm cov kub los ntawm cov kua dej.
Nyob rau hauv niaj hnub kub mining, kub feem ntau yog rov qab los ntawm cyanide daws los ntawm ib tug heev npaum txheej txheem hu ua.carbon adsorption. Activated carbon captures kub-cyanide complexes los ntawm cov kua, uas yog ces stripped siv ib tug kub alkaline cawv tov. Thaum kawg, zinc hmoov yog ntxiv rau precipitate kub, ua ib tug nplua nuj "kub sludge" uas muaj pua pua mus rau txhiab grams kub ib tuj.
Txoj kev rho tawm no tau hloov pauv tag nrho lub ntiaj teb kub mining kev lag luam. Ntawm no yog ib kauj ruam -los ntawm- kauj ruam ntawm kev ua haujlwm ntawm cov txheej txheem kub rov ua haujlwm.
1. Kev npaj Ore: Crushing thiab Milling
Ua ntej cov tshuaj muaj peev xwm ua tau lawv txoj hauj lwm, cov kub ore yuav tsum tau tawg mus rau lub cev kom lub zais kub yog tag nrho nthuav.
- 1. Lub puab tsaig Crushers:
- Cov khoom hnyav no - cov tshuab ua haujlwm tawg loj, cov pob zeb ua rau me me, nrig- qhov loj me.
- 2. Pob Zeb:
- Tom qab ntawd cov pob zeb crushed yog muab tso rau hauv ib qho ultra{0}} hmoov zoo (feem ntau 200 mesh, zoo li cov hmoov nplej sib xws). Cov kauj ruam tseem ceeb no ua kom cov khoom kub tau nthuav tawm tag nrho rau cov tshuaj rho tawm theem.
2. Cyanide Leaching: Dissolving kub
Thaum cov ore yog finely milled, nws undergoes cyanide leaching, cov txheej txheem tseem ceeb tshaj plaws nyob rau hauv kub extraction.
- Cov hmoov nplua ore hmoov yog tov nrog dej los tsim cov slurry tuab.
- Ib qho tshuaj sodium cyanide yog qhia kom yaj cov khoom kub.
- Cov tshuaj tiv thaiv no tsim cov dej -soluble kub-cyanide complex.
3. Theem rov qab kub
Nrog cov kub tam sim no yaj nyob rau hauv cov kua, qhov kawg rov qab theem muaj peb lub ntsiab hom kev kawm: Adsorption, stripping, thiab nag lossis daus.
| Txheej txheem txheej txheem | Khoom siv | Lub Hom Phiaj | Qhov kawg tshwm sim |
| Adsorption | Cov pa roj carbon activated | Captures kub molecules los ntawm cov tshuaj cyanide | Kub - loaded carbon |
| stripping | Kub NaOH + cawv | Tshem tawm thiab tshem tawm cov kub ntawm cov pa roj carbon | Kub - nplua nuj daws |
| Dej nag | Zinc hmoov | Hloov cov kub hauv cov tshuaj ntawm cov tshuaj tiv thaiv | Kub sludge |
To taub Kub Sludge
Qhov kawg tshwm sim ntawm theem nag lossis daus yog kub sludge. Thaum nws tuaj yeem tshwm dub lossis xim av rau qhov muag liab qab, cov khoom siv tseem ceeb no muaj:
- 20% mus rau 90% ntshiab kub
- Nyiaj thiab lwm yam kab hlau
- Residual noo noo thiab me impurities
Vim li cas Cyanide Leaching Dominates Niaj hnub nimno Kub Mining
Txoj kev rov qab tshwj xeeb no yog tus qauv kev lag luam thoob plaws ntiaj teb. Cov nroj tsuag ua haujlwm niaj hnub tuaj yeem kho ntau txhiab tons ntawm ore txhua hnub siv cov kab ke no. Nws dominates kub mining sector vim nws:
- 1. Cov txheej txheem qis -qib ores zoo:
- Ua yav tas los tsis muaj txiaj ntsig mines siv tau.
- 2. Muab cov txiaj ntsig siab heev:
- Tsis tu ncua recovers dhau90%ntawm kub los ntawm ore.
- 3. Ua haujlwm tsis tu ncua:
- Highly scalable rau loj, lag luam mining nroj tsuag.
- 4. Tus nqi siab heev -zoo:
- Muab cov nqi ua haujlwm qis dua piv rau lwm txoj kev rho tawm.
Thaum cov sludge kub tau zoo zoo, nws txav mus rau theem kawg ntawm cov txheej txheem metallurgical:smelting, qhov twg nws yog melted down thiab refined mus rau hauv ntshiab, ci ntsa iab kub bullion.
