Vale tau tsim txog 250,000 tons ntawm cov khoom siv xuab zeb ruaj khov, uas tau lees paub los hloov cov xuab zeb uas feem ntau tsis raug cai mined.

Tom qab 7 xyoo ntawm kev tshawb fawb thiab kev nqis peev ntawm kwv yees li 50 lab reais, Vale tau tsim cov txheej txheem ntau lawm rau cov khoom siv xuab zeb zoo, uas tuaj yeem siv rau hauv kev tsim kho kev lag luam.Lub tuam txhab tau siv cov txheej txheem kev tsim cov khoom xuab zeb no mus rau thaj chaw ua haujlwm ntawm cov hlau ore hauv Minas Gerais, thiab hloov cov ntaub ntawv xuab zeb uas yog thawj zaug yuav tsum tau siv cov dams lossis cov txheej txheem stacking rau hauv cov khoom.Cov txheej txheem ntau lawm Ua raws li kev tswj hwm zoo ib yam li hlau ore ntau lawm.Xyoo no, lub tuam txhab tau ua tiav thiab tsim tawm txog 250,000 tons ntawm cov khoom siv xuab zeb ruaj khov, thiab lub tuam txhab npaj yuav muag lossis pub dawb rau kev tsim cov pob zeb, mortar thiab cement lossis rau paving paving.

Mr. Marcello Spinelli, Tus Lwm Thawj Coj ntawm Vale's Iron Ore Lag Luam, tau hais tias cov khoom siv xuab zeb yog qhov tshwm sim ntawm kev ua haujlwm ruaj khov dua.Nws hais tias: "Qhov project no tau ua rau peb tsim kev lag luam ncig sab hauv.Muaj kev thov loj rau cov xuab zeb hauv kev tsim kho kev lag luam.Peb cov khoom siv xuab zeb muab kev txhim khu kev qha rau kev tsim kho kev lag luam, thaum txo cov kev cuam tshuam ib puag ncig thiab kev sib raug zoo ntawm tailings pov tseg.Influence.”

Bulkoutu mining cheeb tsam sustainable xuab zeb khoom cia vaj

Raws li United Nations kwv yees, lub ntiaj teb txhua xyoo kev thov rau cov xuab zeb yog kwv yees li 40 txog 50 billion tons.Xuab zeb tau dhau los ua cov peev txheej uas siv tau ntau tshaj plaws tom qab dej, thiab cov peev txheej no tau raug siv tsis raug cai thiab ua phem rau thoob ntiaj teb.

Vale's sustainable xuab zeb cov khoom raug suav hais tias yog cov khoom lag luam ntawm cov hlau ore.Cov ore raw nyob rau hauv daim ntawv ntawm pob zeb mined los ntawm cov xwm ua hlau ore tom qab ob peb lub cev ua txheej txheem xws li crushing, tshuaj ntsuam, sib tsoo thiab beneficiation nyob rau hauv lub Hoobkas.Vale's innovation lies nyob rau hauv reprocessing ntawm hlau ore by-products nyob rau hauv lub beneficiation theem kom txog rau thaum nws mus txog qhov tsim nyog zoo yuav tsum tau thiab ua ib tug coj mus muag khoom.Hauv cov txheej txheem kev pab cuam ib txwm muaj, cov ntaub ntawv no yuav dhau los ua tailings, uas tau muab pov tseg los ntawm kev siv cov dams los yog hauv pawg.Tam sim no, txhua tuj ntawm cov khoom siv xuab zeb tsim txhais tau tias txo qis ntawm ib tuj ntawm tailings.

Cov khoom siv xuab zeb ua los ntawm cov txheej txheem hlau ore yog 100% ntawv pov thawj.Lawv muaj cov ntsiab lus silicon siab thiab cov ntsiab lus tsis tshua muaj hlau, thiab muaj cov tshuaj lom neeg zoo sib xws thiab qhov loj me me uniformity.Mr. Jefferson Corraide, tus thawj tswj hwm ntawm Brucutu thiab Agualimpa kev sib koom ua haujlwm hauv cheeb tsam, tau hais tias cov khoom xuab zeb zoo li no tsis muaj kev phom sij."Peb cov khoom siv xuab zeb tau ua tiav los ntawm cov txheej txheem ntawm lub cev, thiab cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov ntaub ntawv tsis hloov pauv thaum ua, yog li cov khoom tsis muaj tshuaj lom thiab tsis muaj mob."

Daim ntawv thov ntawm Vale cov khoom xuab zeb hauv pob zeb thiab mortar tsis ntev los no tau lees paub los ntawm Brazilian Institute of Scientific Research (IPT), Falcão Bauer thiab ConsultareLabCon, peb lub chaw soj nstuam tshaj lij.

Cov kws tshawb fawb los ntawm lub koom haum ntawm Sustainable Minerals ntawm University of Queensland hauv Australia thiab University of Geneva hauv Switzerland tab tom ua kev tshawb fawb ywj pheej los tshuaj xyuas cov yam ntxwv ntawm Vale xuab zeb cov khoom kom nkag siab seb cov khoom siv hauv tsev lwm txoj hauv kev los ntawm ore tuaj yeem dhau los ua qhov chaw ruaj khov. xuab zeb Thiab txo cov khoom pov tseg uas tsim los ntawm kev ua haujlwm tsuas.Cov kws tshawb fawb siv lo lus "oresand" los hais txog cov khoom siv xuab zeb uas tau muab los ntawm cov khoom siv ore thiab ua los ntawm kev ua.

ntau lawm scale

Vale tau cog lus tias yuav muag lossis pub nyiaj ntau dua 1 lab tons ntawm cov khoom xuab zeb los ntawm 2022. Nws cov neeg yuav khoom tuaj ntawm plaub thaj chaw suav nrog Minas Gerais, Espirito Santo, Sao Paulo thiab Brasilia.Lub tuam txhab kwv yees tias los ntawm 2023, cov khoom siv xuab zeb yuav ncav cuag 2 lab tons.

"Peb tau npaj los nthuav dav daim ntawv thov kev lag luam ntawm cov khoom xuab zeb los ntawm 2023. Rau lub hom phiaj no, peb tau teeb tsa ib pab neeg mob siab rau los nqis peev hauv kev lag luam tshiab no.Lawv yuav siv cov txheej txheem tsim cov khoom xuab zeb rau cov txheej txheem tsim khoom uas twb muaj lawm kom tau raws li kev xav tau ntawm kev lag luam. "Rogério Nogueira, Tus Thawj Coj ntawm Vale Iron Ore Marketing, tau hais.

Tam sim no Vale tab tom tsim cov khoom xuab zeb ntawm Brucutu mine hauv San Gonzalo de Abaisau, Minas Gerais, uas yuav raug muag lossis pub dawb.

Lwm qhov chaw mining hauv Minas Gerais tseem tab tom ua ib puag ncig thiab kev hloov kho mining los koom nrog cov txheej txheem xuab zeb."Cov chaw mining no tsim cov ntaub ntawv xuab zeb nrog cov ntsiab lus silicon siab, uas tuaj yeem siv rau hauv kev lag luam sib txawv.Peb tau koom tes nrog ntau lub tsev kawm ntawv suav nrog cov tsev kawm ntawv qib siab, cov chaw tshawb fawb thiab cov tuam txhab hauv tsev thiab txawv teb chaws los tsim cov kev daws teeb meem tshiab los muab cov hlau ore tailings tshiab.Txoj kev tawm.”Mr. André Vilhena, Vale tus thawj coj ua lag luam tshiab tau hais txog.

Ntxiv nrog rau kev siv cov txheej txheem uas twb muaj lawm hauv thaj chaw hlau ore mining, Vale kuj tau tsim ib qho kev thauj mus los uas muaj cov kev tsheb ciav hlau thiab txoj kev thauj cov khoom xuab zeb mus rau ntau lub xeev hauv Brazil."Peb lub hom phiaj yog los xyuas kom muaj kev ruaj ntseg ntawm kev lag luam hlau hlau.Los ntawm kev ua lag luam tshiab no, peb cia siab tias yuav txo qhov cuam tshuam ib puag ncig, thaum nrhiav kev los txhawb kev ua haujlwm thiab nce nyiaj tau los. "Mr. Verena ntxiv.

ecological khoom

Vale tau tshawb fawb txog tailings daim ntawv thov txij li xyoo 2014. Xyoo tas los, lub tuam txhab tau qhib Puku Brick Factory, uas yog thawj lub Hoobkas tsim kev tsim khoom siv tailings los ntawm kev ua haujlwm tsuas yog cov khoom siv tseem ceeb.Cov nroj tsuag nyob hauv thaj chaw Pico mining hauv Itabilito, Minas Gerais, thiab lub hom phiaj los txhawb kev lag luam ncig hauv kev ua cov hlau ore.

Tsoom Fwv Teb Chaws Center for Science thiab Technology Education ntawm Minas Gerais thiab Pico Brick Factory tau tsim kev koom tes thiab xa 10 tus kws tshawb fawb suav nrog cov kws tshaj lij, cov kws tshaj lij, cov kawm tiav, kawm tiav thiab cov tub ntxhais kawm txuj ci rau lub Hoobkas.Thaum lub sij hawm kev koom tes, peb yuav ua hauj lwm nyob rau hauv lub Hoobkas qhov chaw, thiab cov khoom nyob rau hauv lub sij hawm ntawm kev tshawb fawb thiab kev loj hlob lub sij hawm yuav tsis raug muag rau lub ntiaj teb sab nraud.

Vale tseem koom tes nrog Itabira tsev kawm ntawv ntawm Tsoom Fwv Teb Chaws University of Itajuba los kawm txog txoj kev siv cov khoom xuab zeb rau paving.Lub tuam txhab npaj yuav pub cov khoom siv xuab zeb rau hauv cheeb tsam rau paving.

Muaj kev ruaj ntseg mining

Ntxiv nrog rau kev tsim cov khoom lag luam ecological, Vale kuj tau ua lwm yam kev ntsuas los txo cov tailings thiab ua rau kev ua haujlwm mining kom ruaj khov.Lub tuam txhab tau cog lus los tsim cov tshuab ziab khaub ncaws uas tsis xav tau dej.Tam sim no, kwv yees li 70% ntawm Vale cov khoom siv hlau hlau yog tsim los ntawm kev ua kom qhuav, thiab qhov kev faib ua feem no yuav nyob twj ywm tsis hloov txawm tias tom qab txhua xyoo muaj peev xwm nce mus txog 400 lab tons thiab cov haujlwm tshiab tau muab tso rau hauv kev ua haujlwm.Xyoo 2015, hlau ore uas tsim los ntawm kev ua kom qhuav tsuas yog suav txog 40% ntawm tag nrho cov zis.

Txawm hais tias kev ua kom qhuav tuaj yeem siv tau yog cuam tshuam nrog qhov zoo ntawm cov hlau ore mined.Cov hlau ore hauv Carajás muaj cov ntsiab lus hlau siab (tshaj 65%), thiab cov txheej txheem ua haujlwm tsuas yog yuav tsum tau crushed thiab tshuaj xyuas raws li qhov loj me.

Cov ntsiab lus hlau nruab nrab ntawm qee qhov chaw mining hauv Minas Gerais yog 40%.Txoj kev kho ib txwm siv yog txhawm rau nce cov ntsiab lus hlau ntawm cov ore los ntawm kev ntxiv dej kom tau txais txiaj ntsig.Feem ntau ntawm cov tshwm sim tailings yog stacked nyob rau hauv tailings dams los yog pits.Vale tau siv lwm cov cuab yeej siv rau cov txiaj ntsig ntawm qib qis hlau ore, uas yog cov sib nqus sib nqus qhuav ntawm cov nplua ore (FDMS) thev naus laus zis.Cov txheej txheem sib nqus sib nqus ntawm cov hlau ore tsis xav tau dej, yog li tsis tas yuav siv cov tailings dams.

Lub tshuab sib nqus sib nqus qhuav rau cov nplua ore tau tsim nyob rau hauv Brazil los ntawm NewSteel, uas tau txais los ntawm Vale hauv 2018, thiab tau siv rau hauv kev cog qoob loo hauv Minas Gerais.Thawj cov nroj tsuag coj mus muag yuav muab tso rau hauv kev siv hauv thaj chaw ua haujlwm Vargem Grande hauv 2023. Cov nroj tsuag yuav muaj peev xwm tsim tau txhua xyoo ntawm 1.5 lab tons thiab tag nrho cov peev ntawm US $ 150 lab.

Lwm lub tshuab uas tuaj yeem txo qhov kev thov rau tailings dams yog lim cov tailings thiab khaws cia rau hauv cov pob qhuav.Tom qab txhua xyoo hlau ore ntau lawm muaj peev xwm nce mus txog 400 lab tons, feem ntau ntawm 60 lab tons (sau suav txog 15% ntawm tag nrho cov peev txheej tsim tawm) yuav siv cov cuab yeej no los lim thiab khaws cov tailings.Vale tau qhib lub tailings pom cog nyob rau hauv Great Varzhin mining cheeb tsam, thiab npaj yuav qhib peb tailings pom cov nroj tsuag nyob rau hauv thawj peb lub hlis twg ntawm 2022, ib tug ntawm uas yog nyob rau hauv lub Brucutu mining cheeb tsam thiab lwm yam ob yog nyob rau hauv Itabira Mining cheeb tsam. .Tom qab ntawd, cov hlau ore uas tsim los ntawm cov txheej txheem ntub dej ib txwm siv tsuas yog suav txog 15% ntawm tag nrho cov peev txheej tsim tau, thiab cov tailings uas tsim tawm yuav muab khaws cia rau hauv tailings dams lossis deactivated mine pits.