Raws li lub teb chaws muab qhov tseem ceeb rau kev tiv thaiv ib puag ncig, ua ib hom khib nyiab khov, yuav ua li cas siv cov hlau slag tau dhau los ua ib qho tseem ceeb. Tsab xov xwm no qhia txog kev daws teeb meem kev siv tshuab rau kev rov ua dua cov hlau slag. Kev siv tshuab ua kom qhuav yuav tsum ua kom muaj kev rov qab zoo ntawm cov hlau ntawm ib sab tes thiab kev siv cov khib nyiab tag nrho ntawm qhov tod tes. Cov kauj ruam ua cov hlau slag hauv qab no tau piav qhia: Kev xaiv crushing; kev sib cais sib nqus thiab lub luag haujlwm ntawm cov khoom siv tshiab ib-tsav siab siab roller mill hauv kev siv cov hlau slag tag nrho; kev siv cov khoom siv tshiab tuaj yeem txo tus nqi ntawm cov hlau slag crushing, yog li tsim ntau cov txiaj ntsig rau kev siv cov hlau slag. Kev txhawb nqa kev siv cov hlau slag tag nrho tau tsim qhov ua tau. Kev txhawb nqa ntawm lub tswv yim tag nrho no hauv kev lag luam xav tau kev sib koom tes ntawm cov tuam txhab tsim khoom hlau, cov kws tshaj lij ua cov ntxhia thiab cov kws tshawb fawb, kev siv tag nrho ntawm daim ntawv thov, thiab kev lag luam thiab kev txhawb nqa.
Kev siv cov hlau slag hauv kev tsim kho
1) Cov hlau slag siv los tsim cov cement thiab cov khoom sib xyaw ua ke. Cov hlau slag muaj cov zaub mov nquag xws li tricalcium silicate (C3S), dicalcium silicate (C2S) thiab hlau aluminate nrog cov yam ntxwv hydraulic cementing, uas yog nyob rau hauv kab nrog cov yam ntxwv ntawm cement. Yog li ntawd, nws tuaj yeem siv ua cov khoom siv raw thiab cement admixture rau kev tsim cov cement tsis-clinker, tsawg dua clinker cement. Cov hlau slag cement muaj cov yam ntxwv zoo heev xws li hnav tsis kam, siab flexural zog, corrosion tsis kam thiab te tsis kam.
2) Cov hlau slag hloov cov pob zeb tawg thiab cov pob zeb me me. Cov hlau slag tawg pob zeb muaj qhov zoo ntawm lub zog siab, qhov chaw ntxhib, tiv taus kev hnav zoo thiab ruaj khov, ntim loj, ruaj khov zoo, thiab sib xyaw nrog asphalt. Piv nrog cov pob zeb tawg ib txwm, nws kuj tiv taus cov yam ntxwv ntawm kev tawg qis kub, yog li nws tuaj yeem siv dav hauv kev tsim kho txoj kev. Hlau slag, ua txoj kev tsheb ciav hlau ballast, muaj cov yam ntxwv ntawm kev tsis cuam tshuam rau txoj kev tsheb ciav hlau txoj haujlwm thiab kev coj hluav taws xob zoo. Vim tias hlau slag muaj dej permeability zoo thiab dej ntws, cov khoom cementitious hauv nws tuaj yeem ua rau nws tawv ua tej daim loj. Hlau slag kuj tseem tsim nyog rau kev tsim txoj kev hauv cov hav dej thiab ntug hiav txwv dej.
Tam sim no, txoj kev siv cov hlau slag hauv tsev feem ntau yog tsoo cov hlau slag rau -5 hli los hloov cov xuab zeb dej ua cov khoom siv hauv tsev, lossis pob-mill cov hlau slag uas raug tsoo ua hmoov zoo rau kev siv ua cov khoom siv cement. Shandong Huate Magnetoelectric Technology Co., Ltd. kuj tau ua kev tshawb fawb tob txog kev siv cov hlau slag, siv cov tshuab zeb siab siab ib zaug rau kev tsoo cov hlau slag zoo, txhim kho cov txheej txheem ua cov hlau slag, thiab tau txais txiaj ntsig zoo rau kev lag luam. Nws tau siv tau zoo hauv Pangang Mining thiab ib lub tuam txhab hlau slag hauv Lianyungang.
Cov txheej txheem tsim khoom ib txwm muaj ntawm cov hlau slag yog raws li nram no:
1) Cov khoom loj loj raug tsoo nrog lub puab tsaig crusher rau -50, thiab cov hlau sib nqus raug cais nrog lub pulley sib nqus.
2) Teem qhov loj ntawm cov hlau sib cais rau +45 hli. Qhov seem 0-45 hli feem ntau yog siv los ua kev tsim kho txoj kev thiab cov ntaub ntawv sau. Yuav kom nce nws cov nqi siv, cov hlau slag tuaj yeem faib ua 0-4, 4-8 thiab lwm qib sib txawv. Cov thev naus laus zis xav tau cov peev txheej tsawg dua thiab cov nqi khiav lag luam qis. Txawm li cas los xij, ntau dua 50% ntawm cov ntsiab lus hlau hauv cov slag yog concentrated hauv -10 hli lub zog, yog li cov thev naus laus zis no yuav ua rau feem ntau ntawm cov hlau poob, tab sis cov ntsiab lus hlau hnyav yuav nce ntxiv.
Yog li ntawd, kev sib tsoo ntub dej zoo tau siv dav dav tshwj xeeb tshaj yog rau cov slag tsim tawm hauv kev tsim cov hlau siab-alloy uas muaj cov qib siab Cr, Ni, Mo, thiab lwm yam. Cov txheej txheem ib txwm muaj xws li kev sib tsoo thiab kev sib tsoo zoo ob kauj ruam (tshuab zeb pas nrig / tshuab zeb pob). Txij li thaum cov hlau nrog ductility tsis yooj yim rau kev sib tsoo, kev sib cais ntawm cov hlau thiab hlau slag tuaj yeem ua tiav los ntawm kev sib cais lossis kev faib tawm. Qhov zoo ntawm cov pob zeb hauv av ntawm slag feem ntau yog siab dua 95% thiab qis dua 0.2 hli. Tus nqi rov qab hlau ntawm cov txheej txheem no tshaj 95%, thiab cov txiaj ntsig ntawm cov hlau concentrate tsim tawm yog 90 txog 92%. Los ntawm qhov kev xav ntawm kev sib cais hlau thiab slag, cov txheej txheem no tuaj yeem hais tias yog cov txheej txheem zoo tshaj plaws.
Qhov tsis zoo ntawm cov txheej txheem no yog tias cov hlau slag sib cais yog cov slurry zoo. Vim tias cov txheej txheem yog cov txheej txheem ntub dej, nws nyuaj rau siv rau hauv kev tsim kho. Yog li ntawd, feem ntau ntawm cov khoom siv hlau slag uas tseem tshuav tom qab xaiv cov hlau raug pov tseg, thiab qhov no feem ntau yog vim tus nqi siab ntawm kev ziab ntub thiab kev txwv kev cai lij choj thoob ntiaj teb. Txhua daim ntawv thov nqi siab dua yuav tsum muaj lwm txoj hauv kev los kho cov sludge ntub (qhuav, ua kom tuab, thiab lwm yam).
Feem ntau yuav tsum xaiv qhov ceev ntawm cov hlau rov qab los yog qhov muaj cov slag seem. Feem ntau, qhov kev xaiv no nyob ntawm tus nqi ntawm cov hlau rov qab los.
Cov txheej txheem niaj hnub nyob rau theem no yog raws li nram no:
Cov khoom loj loj raug tsoo nrog lub puab tsaig crusher mus txog -50, thiab cov hlau sib nqus raug cais nrog lub pulley sib nqus.
-50 cov hlau slag raug tsoo los ntawm lub rauj crusher lossis lub khob hliav crusher, lub tshuab tsoo impact, sieved los ntawm ntau txheej sieve, -20-10 grit khoom siv tau ua gravel, -10–1 grit khoom siv tau ua xuab zeb zoo.
Rooj I
Kev tsom xam ntawm qhov loj me ntawm 50 hli pub rau hauv lub rauj crusher
-10 cov hlau slag yog zom rau hauv lub tshuab zeb qhuav rau hauv -200 mesh hmoov zoo, thiab tom qab ntawd lub tshuab sib cais hmoov qhuav electromagnetic siv los tshem tawm hlau ua cov khoom siv cement.
Lub sijhawm tshaj tawm: Plaub Hlis-12-2021