Lub tswv yim txoj hauj lwm ntawm lepidolite rau lithium extraction tau raug txhim kho
Kev rho tawm ntawm lithium los ntawm mica: thev naus laus zis, dhau los ua ib feem tseem ceeb ntawm cov khoom siv lithium
Nrog rau kev ua tiav ntawm lithium mica extraction technology thiab kev nce qib ntawm cov thev naus laus zis, lithium mica extraction ntawm lithium tau ua tiav cov khoom loj, cov nqi tsim khoom tau mus txog qhov nruab nrab tus nqi ntawm lithium kev lag luam, thiab cov khoom lag luam kuj ruaj khov, uas tau lees paub los ntawm downstream cathode khoom manufacturers.Lepidolite tau maj mam dhau los ua ib feem tseem ceeb ntawm cov khoom siv lithium.
Txoj kev loj hlob ntawm lithium mica tau dhau los ua ib qho kev xav tau
Tuam Tshoj txoj kev vam khom rau cov peev txheej lithium yog siab li 70%.Lub ntiaj teb cov peev txheej lithium feem ntau yog faib hauv Chile, Australia thiab Argentina, thiab Tuam Tshoj cov peev txheej lithium tsuas yog 7%.Nyob rau tib lub sijhawm, Tuam Tshoj muaj peev xwm loj ntawm lithium ntsev.Los ntawm 2020, lub peev xwm ntawm lithium carbonate thiab lithium hydroxide yog li 506900 tons ntawm LCE, thiab lub ntiaj teb no muaj peev xwm ntawm lithium ntsev yog txog 785700 tons ntawm LCE, suav txog li 65% ntawm lub ntiaj teb.Yog li ntawd, Tuam Tshoj cov peev txheej lithium yog nyob ntawm cov teb chaws txawv teb chaws.Kwv yees li 70% ntawm lithium mines nyob ntawm kev xa tawm txawv teb chaws, uas Australia cov khoom lag luam nce mus txog 60%.
Txij li thaum 2018, Tuam Tshoj Australia kev sib raug zoo tau maj mam deteriorated.Nyob rau lub Tsib Hlis 2021, lub teb chaws txoj kev loj hlob thiab Reform Commission tau tshaj tawm cov lus tshaj tawm txog kev ncua ntawm cov dej num raws li xov tooj ntawm Tuam Tshoj Australia cov tswv yim kev lag luam koom ua ke coj los ntawm cov koom haum tseem ceeb ntawm tsoom fwv teb chaws Australia, thiab Tuam Tshoj Australia kev sib raug zoo tau nkag mus rau hauv lub xeev ntawm kev kub ntxhov.
Raws li cov khoom siv tseem ceeb ntawm lithium lub zog tshiab, cov peev txheej lithium, hu ua "cov roj dawb", tau nce mus rau Tuam Tshoj lub teb chaws cov tswv yim khaws cia cov peev txheej txij li xyoo 2016, thiab kev siv cov peev txheej yog kev tiv thaiv los ntawm lub xeev.Txhawm rau daws qhov teeb meem ntawm lithium cov peev txheej muab kev ruaj ntseg los ntawm kev cuam tshuam ntawm Tuam Tshoj Australia kev sib raug zoo, kev siv zog thiab kev ceev ntawm kev tsim cov peev txheej lithium hauv tsev yuav muaj zog ntxiv.
Tuam Tshoj cov peev txheej lithium feem ntau yog cov pas dej ntsev, spodumene thiab lepidolite.Salt lake lithium account rau 83%, feem ntau faib hauv Qinghai thiab Tibet;Spodumene tso nyiaj rau 15%, feem ntau faib hauv Sichuan;Lepidolite suav txog 2%, feem ntau faib hauv Jiangxi.
Cov txheej txheem rho tawm lithium ntawm lithium mica tau ua kom zoo thiab kho dua tshiab
Cov txheej txheem ntawm kev rho tawm lithium los ntawm lepidolite feem ntau suav nrog txiv qaub roasting, sulfuric acid roasting, sulfate roasting, chlorination roasting thiab siab boiling.
Piv nrog rau spodumene, lepidolite feem ntau ntsib ntau impurities nyob rau hauv cov txheej txheem rho tawm, tshwj xeeb tshaj yog muaj cov fluorine.Mica muaj nyob rau hauv daim ntawv ntawm silicate thiab muaj ib tug kuj nruj qauv.Nyob rau theem pib, nws xav tau kev kub siab kub roasting thiab kev kho defluorination kom loosen cov ore raw qauv, thiab tom qab ntawd nqa tawm kev sib tsoo tom ntej.Tsis tas li ntawd, nyob rau theem tom ntej, cov khoom siv fluorine yog ib qho yooj yim los tsim hydrofluoric acid nyob rau hauv cov txheej txheem tshuaj tiv thaiv, uas corrodes cov cuab yeej, ua rau cov khoom tsis tu ncua.
Limestone roasting txoj kev yog siv nyob rau hauv thawj theem ntawm lithium extraction los ntawm lepidolite.Vim lub complex impurity tshem tawm cov txheej txheem thiab loj npaum li cas ntawm cov khib nyiab residue, nws tau maj mam tshem tawm.Muaj ntau qhov kev tiv thaiv corrosion rau cov khoom siv sulfuric acid ntau lawm tom qab siv txoj kev sulfuric acid, tab sis corrosion kuj ntawm sulfuric acid ntau lawm cov khoom yog siab.Tam sim no, feem ntau cov lag luam hauv Yichun Area Siv sulfate roasting txoj kev rau ntau lawm.Hauv thawj theem, potassium sulfate feem ntau yog siv.Tam sim no, sodium sulfate thiab sodium poov tshuaj sulfate yog siv los hloov pauv kom txo cov nqi tsim khoom ntxiv.
Post lub sij hawm: Apr-19-2022