Kev siv dav dav ntawm tailings yog ib lo lus kub hauv kev lag luam mining nyob rau xyoo tas los no, thiab kev tshawb fawb txog kev siv cov tailings kub kuj tau ua tiav. Nws tau nkag siab tias kev tsim cov pob zeb kub hauv kuv lub tebchaws tau mus txog ntau dua 1.5 billion tons, tab sis kev siv dav dav yog tsawg dua 20%. mine tailings suav nrog ob txoj hauv kev: hauv av filling thiab kev siv cov peev txheej.Cov txheej txheem kev ua haujlwm ib txwm muaj ntawm cov mines kub yog sau cov coarse-grained tailings rau hauv lub qhov dej, thaum cov nplua-grained tailings yog piled nyob rau hauv lub pas dej tailings.Vim cov ntsiab lus ntawm kub. ore feem ntau tsis tshua muaj, txhawm rau txhawm rau kom tau txais txiaj ntsig ntawm cov peev txheej kub, nws yog qhov tsim nyog los ua cov haujlwm sib tsoo. Yog li ntawd, cov nplua-grained tailings muaj ntau, thaum lub coarse-grained tailings tsawg dua, thiab tsuas yog coarse-grained tailings tau sau hauv av. , nws yog tsis yooj yim sua kom fundamentally txo cov khoom pov tseg thiab txo lub peev xwm cia ntawm tailings pas dej. Kev tuav cov pas dej tailings tseem xav tau ntau thaj av thiab ua rau muaj kev puas tsuaj rau ib puag ncig.Qhov kev pov tseg ntawm cov tailings kub tau dhau los ua ib qho tseem ceeb txwv txoj kev loj hlob ntawm kev lag luam kub.
Lub Ob Hlis 10, 2022, Ministry of Industry thiab Information Technology, National Development thiab Reform Commission, Ministry of Science thiab Technology, Ministry of Finance, Ministry of Natural Resources, Ministry of Ecology thiab Ib puag ncig, Ministry of Commerce. , thiab Lub Xeev Lub Tuam Txhab Tswj Xyuas Nyiaj Txiag tau sib koom ua ke tshaj tawm "Ntawm Kev Luam Ntawv thiab Kev Tshaj Tawm Tshaj Tawm Txog Kev Tshaj Tawm Txog Kev Lag Luam". "Kev Ceeb Toom Txog Kev Npaj Ua Haujlwm rau Kev Siv Kom Zoo" xav kom txog xyoo 2025, kev siv cov khoom siv pov tseg hauv kev lag luam tseem ceeb xws li hlau thiab hlau, cov hlau tsis muaj hlau, thiab kev lag luam tshuaj lom neeg hauv kuv lub teb chaws yuav txo qis, qhov kev siv dav dav. ntawm cov khoom siv khib nyiab ntau yuav raug kho kom zoo dua qub, kev lag luam cov peev txheej txuas mus ntxiv yuav txhim kho kev noj qab haus huv, thiab cov peev txheej kev lag luam yuav raug siv dav. Kev ua tau zoo tau zoo dua qub, thiab kev siv dav dav ntawm cov khoom siv khib nyiab ntau yuav ncav cuag 57%.
Sino-German Key Laboratory ntawm Magnetoelectricity thiab Intelligent Mineral Processing ntawm Huate Tuam Txhab ua ntau qhov kev sim tau txais txiaj ntsig ntawm cov tailings kub hauv Yantai cheeb tsam. Cov pob zeb tseem ceeb ntawm cov tailings kub yog gangue cov zaub mov xws li quartz, feldspar thiab calcite, thiab ib qho me me ntawm cov khoom siv hlau, hlau nplaum hlau, hlau oxide, titanium oxide, hlau silicate, hlau sulfide thiab lwm yam impurities. kub tailings feem ntau yog 200 mesh 50-70%, qhov loj me yog qhov sib xws, thiab nws muaj cov av nkos me me. Lub ntsiab impurity Fe2O3 cov ntsiab lus yog 1-3%, TiO2 cov ntsiab lus yog 0.1-0.3%, CaO cov ntsiab lus yog 0.12-1.0%, thiab whiteness ntawm kub tailings yog 5-20%. Muaj qee qhov sib txawv ntawm cov tailings uas tsim los ntawm cov concentrators sib txawv. Qee cov tailings muaj SiO2 siab cov ntsiab lus, los yog muaj spodumene, sericite, thiab lwm yam. Feem ntau ntawm lawv yog cov feldspar-quartz hom pegmatite hom, nrog cov nqi rov qab siab.
Lub Tuam Txhab Huate tau tsim "kev sib nqus sib nqus-lub ntiajteb txawj nqus sib cais" ua ke cov txiaj ntsig zoo, thiab tau txais daim ntawv tso cai patent nyob rau lub Cuaj Hli 2020. Cov ntsiab lus patent yog hais txog "txoj kev siv dav dav ntawm cov tailings kub uas muaj kub, hlau thiab feldspar.Tam sim no, ntau dua. kaum daim ntawv thov kev lag luam loj tshaj plaws tau ua tiav hauv Yantai, Shandong, qhov loj tshaj plaws uas tuaj yeem ua 8,000 tons ntawm kub tailings ib hnub twg. , ntub dej muaj zog sib nqus phaj sib nqus sib nqus cais, ntsug nplhaib siab gradient sib nqus sib nqus cais, thiab electromagnetic slurry sib nqus sib nqus cais yog siv ua ke. Thaum tau txais cov khoom zoo feldspar mloog zoo los ntawm cov tailings, cov khoom muaj txiaj ntsig xws li cov hlau nplaum, cov pob zeb kub, cov khoom siv cement, thiab cov khoom siv cib ua cov khoom siv raw khoom kuj tau rov qab los kom paub txog kev siv cov tailings kub thiab ua tiav xoom paug hauv txhua qhov. - ncig txoj kev.
Ntiv nplhaib siab gradient sib nqus separator thiab electromagnetic slurry siab gradient sib nqus separator yog siv nyob rau hauv kub tailings project
Lub sij hawm xa tuaj: Mar-11-2022