Raws li ib qho ntawm cov hlau uas ntxov tshaj plaws thiab siv dav hauv ntiaj teb, hlau ore yog ib qho tseem ceeb raw khoom rau hlau thiab hlau ntau lawm.Tam sim no, hlau ore kev pab tau depleting, tus yam ntxwv los ntawm ib tug ntau dua kev faib ua feem ntawm lean ore piv rau nplua nuj ore, ntau txuam ore, thiab complex ore compositions.Hlau feem ntau muab rho tawm los ntawm nws cov ore, hu ua hematite lossis magnetite, los ntawm cov txheej txheem hu ua hlau ore beneficiation.Cov kauj ruam tshwj xeeb koom nrog hauv kev lag luam rho tawm ntawm cov hlau tuaj yeem sib txawv nyob ntawm qhov xwm txheej ntawm cov ore thiab cov khoom xav tau, tab sis cov txheej txheem dav dav feem ntau suav nrog cov theem hauv qab no:
Mining
Iron ore deposits yog thawj zaug pom los ntawm kev tshawb nrhiav cov dej num.Thaum pom muaj qhov tso nyiaj tau zoo, cov ore raug rho tawm hauv av siv cov txheej txheem mining xws li qhib-qhov lossis hauv av mining.Cov theem pib no tseem ceeb heev vim nws teeb tsa theem rau cov txheej txheem rho tawm tom ntej.
Crushing thiab sib tsoo
Cov ore muab rho tawm yog ces crushed rau hauv me me pieces kom yooj yim ua ntxiv.Crushing feem ntau yog ua los ntawm lub puab tsaig crushers los yog lub khob hliav qab crushers, thiab kev sib tsoo yog nqa tawm siv autogenous sib tsoo mills los yog pob mills.Cov txheej txheem no txo cov ore mus rau cov hmoov zoo, ua kom yooj yim rau kev tswj thiab txheej txheem hauv cov theem tom ntej.
Sib nqus sib cais
Hlau ore feem ntau muaj impurities los yog lwm yam minerals uas yuav tsum tau muab tshem tawm ua ntej nws yuav siv tau nyob rau hauv zus tau tej cov hlau thiab hlau.Sib nqus sib cais yog ib txoj hauv kev siv los cais cov hlau nplaum sib nqus los ntawm cov tsis sib nqus.Cov hlau nplaum muaj zog, xws li Huate magnet separator, yog siv los nyiam thiab cais cov hlau ore hais los ntawm gangue (cov ntaub ntawv tsis xav tau).Cov kauj ruam no yog qhov tseem ceeb rau kev txhim kho cov purity ntawm cov ore.
Kev pab
Cov kauj ruam tom ntej yog qhov txiaj ntsig ntawm cov ore, qhov twg lub hom phiaj yog txhawm rau txhim kho cov ntsiab lus hlau los ntawm ntau yam txuj ci.Cov txheej txheem no yuav suav nrog kev ntxuav, tshuaj xyuas, thiab kev sib cais lub ntiajteb txawj nqus kom tshem tawm cov impurities thiab txhim kho qhov zoo ntawm cov ore.Cov txiaj ntsig tseem tuaj yeem suav nrog flotation, qhov twg cov tshuaj ntxiv rau cov ore kom cov hlau hais ntab thiab cais tawm ntawm cov khoom seem.
Pelletizing los yog Sintering
Thaum cov ore tau txais txiaj ntsig zoo, nws yuav tsum tau agglomerate cov khoom zoo rau hauv cov loj dua rau kev ua haujlwm zoo dua.Pelletizing yuav ua rau me me kheej kheej pellets los ntawm kev tumbling cov ore nrog additives xws li limestone, bentonite, los yog dolomite.Sintering, ntawm qhov tod tes, suav nrog cua sov cov ore nplua nrog rau cov fluxes thiab coke breeze los ua ib qho semi-fused pawg hu ua sinter.Cov txheej txheem no npaj cov ore rau qhov kawg rho tawm cov kauj ruam los ntawm kev txhim kho nws lub cev thiab cov yam ntxwv tuav.
Smelting
Cov kauj ruam kawg hauv cov txheej txheem extraction yog smelting, qhov twg cov hlau ore yog rhuab nyob rau hauv lub moj tej tawg rauv nrog rau coke (ib carbonaceous roj) thiab limestone (uas ua raws li ib tug flux).Cov cua kub hnyav ua rau cov hlau tawg mus rau hauv cov hlau molten, uas sau rau hauv qab ntawm lub cub tawg, thiab slag, uas ntab saum toj thiab raug tshem tawm.Tom qab ntawd cov hlau molten yog muab pov rau hauv ntau yam duab, xws li ingots lossis billets, thiab ua tiav ntxiv kom tau txais cov khoom siv hlau thiab hlau.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov sib txawv ntawm cov hlau ore deposits thiab cov nroj tsuag ua haujlwm yuav muaj kev hloov pauv hauv cov txheej txheem tshwj xeeb uas tau ua haujlwm, tab sis tag nrho cov hauv paus ntsiab lus tseem zoo sib xws.Kev rho tawm ntawm cov hlau los ntawm cov ore yog ib txoj kev nyuaj thiab ntau kauj ruam uas yuav tsum tau ua tib zoo tswj xyuas cov peev txheej thiab thev naus laus zis.Kev suav nrog cov khoom siv siab heev xws li Huate magnet separator txhim khu kev ua tau zoo thiab zoo ntawm cov txheej txheem sib cais, kom ntseeg tau tias cov khoom kawg ua tau raws li cov qauv tsim nyog rau hlau thiab hlau.
Lub sij hawm xa tuaj: Plaub Hlis-08-2024