Kev siv cov tailings dav dav yog lo lus kub hauv kev lag luam mining hauv xyoo tas los no, thiab kev tshawb fawb txog kev siv cov tailings kub dav dav kuj tau ua tiav. Nws nkag siab tias kev tsim cov tailings kub hauv kuv lub tebchaws tau mus txog ntau dua 1.5 billion tons, tab sis tus nqi siv dav dav tsawg dua 20%. Tam sim no, txoj hauv kev zoo tshaj plaws los paub txog kev pov tseg tsis muaj pov tseg thiab tsis muaj kev phom sij ntawm cov tailings kub suav nrog ob txoj hauv kev: kev sau hauv av thiab kev siv cov peev txheej. Cov txheej txheem sau ib txwm ntawm cov chaw kub yog sau cov tailings ntxhib rau hauv lub qhov dej, thaum cov tailings zoo raug muab tso rau hauv pas dej tailings. Vim tias cov ntsiab lus ntawm cov hlau kub feem ntau qis, txhawm rau kom tau txais cov peev txheej kub ntau tshaj plaws, nws feem ntau yuav tsum tau ua cov haujlwm sib tsoo. Yog li ntawd, cov tailings zoo muaj ntau, thaum cov tailings ntxhib tsawg dua, thiab tsuas yog cov tailings ntxhib raug sau hauv av. , nws tsis yooj yim sua kom txo cov khib nyiab khov kho thiab txo qhov muaj peev xwm khaws cia ntawm cov pas dej tailings. Kev khaws cov pas dej tailings tseem xav tau ntau thaj av thiab ua rau ib puag ncig puas tsuaj. Kev pov tseg cov tailings kub tau dhau los ua ib qho tseem ceeb uas txwv tsis pub muaj kev txhim kho kev lag luam ntawm cov chaw kub.
Thaum Lub Ob Hlis 10, 2022, Ministry of Industry thiab Information Technology, National Development and Reform Commission, Ministry of Science and Technology, Ministry of Finance, Ministry of Natural Resources, Ministry of Ecology and Environment, Ministry of Commerce, thiab State Administration of Taxation tau sib koom ua ke tshaj tawm "Txog Kev Luam Ntawv thiab Kev Faib Khoom Siv Kom Sai Sai". Daim "Daim Ntawv Ceeb Toom Txog Kev Siv Txoj Kev Siv Tag Nrho" yuav tsum tau ua kom txog xyoo 2025, kev siv cov khib nyiab khov kho hauv kev lag luam tseem ceeb xws li hlau thiab hlau, hlau tsis yog hlau, thiab kev lag luam tshuaj lom neeg hauv kuv lub tebchaws yuav txo qis, qib kev siv tag nrho ntawm cov khib nyiab khov kho hauv kev lag luam yuav zoo dua qub, kev lag luam cov peev txheej rov ua dua tshiab yuav txuas ntxiv mus zoo, thiab cov peev txheej kev lag luam yuav raug siv tag nrho. Kev ua haujlwm tau zoo dua qub, thiab kev siv tag nrho ntawm cov khib nyiab khov kho hauv kev lag luam yuav ncav cuag 57%. Yog li ntawd, kev siv cov peev txheej ntawm cov tailings kub yog qhov tseem ceeb.
Lub Chaw Kuaj Xyuas Sino-German ntawm Magnetoelectricity thiab Kev Ua Haujlwm Ntse ntawm Huate Company ua ntau qhov kev sim ua kom zoo ntawm cov tailings kub hauv thaj chaw Yantai. Cov khoom tseem ceeb ntawm cov tailings kub yog cov zaub mov gangue xws li quartz, feldspar thiab calcite, thiab me me ntawm cov hlau tshuab, hlau sib nqus, hlau oxide, titanium oxide, hlau silicate, hlau sulfide thiab lwm yam tsis huv. Qhov loj me ntawm cov khoom kub tailings feem ntau yog 200 mesh 50-70%, qhov loj me ntawm cov khoom yog sib xws, thiab nws muaj me me ntawm cov av nplaum zoo. Cov ntsiab lus tseem ceeb Fe2O3 impurity yog 1-3%, TiO2 cov ntsiab lus yog 0.1-0.3%, CaO cov ntsiab lus yog 0.12-1.0%, thiab qhov dawb ntawm cov tailings kub yog 5-20%. Muaj qee qhov sib txawv hauv cov khoom sib xyaw ntawm cov tailings tsim los ntawm cov concentrators sib txawv. Qee cov tailings muaj cov ntsiab lus SiO2 siab, lossis muaj spodumene, sericite, thiab lwm yam. Feem ntau ntawm lawv yog cov feldspar-quartz hom pegmatite hom, nrog rau tus nqi rov siv dua siab.
Lub Tuam Txhab Huate tau tsim cov txheej txheem "sib cais sib nqus-lub ntiajteb txawj nqus" ua ke, thiab tau txais daim ntawv tso cai patent tsim khoom thaum lub Cuaj Hli 2020. Cov ntsiab lus patent yog hais txog "ib txoj kev siv dav dav ntawm cov tailings kub uas muaj kub, hlau thiab feldspar. Tam sim no, ntau tshaj kaum daim ntawv thov kev lag luam loj tau ua tiav hauv Yantai, Shandong, qhov loj tshaj plaws uas tuaj yeem ua tiav 8,000 tons ntawm cov tailings kub ib hnub. Hauv cov txheej txheem no, cov khoom siv advanced xws li vibrating screen, spiral chute, shaking table, drum magnetic separator, ntub dej muaj zog magnetic phaj sib nqus, ntsug nplhaib siab gradient magnetic separator, thiab electromagnetic slurry magnetic separator siv ua ke. Thaum tau txais cov feldspar concentrate zoo los ntawm cov tailings, cov khoom muaj nqis xws li magnetite, cov zaub mov kub, cov khoom siv cement raw, thiab cov khoom siv ua cib kuj tau rov qab los paub txog kev siv dav dav ntawm cov tailings kub thiab ua tiav xoom kev tso tawm hauv txhua txoj kev.
Lub nplhaib ntsug siab gradient magnetic separator thiab electromagnetic slurry siab gradient magnetic separator yog siv rau hauv cov kub tailings project
Lub sijhawm tshaj tawm: Lub Peb Hlis-11-2022