Cov xaiv xaiv thiab daim ntawv thov ntawm cov hlau tawm ntawm hlau slag zeb
Abstract: Cov yam ntxwv ntawm kev siv pa hauv cov av nkos hauv kev sib cem zom zawg, qhov xwm txheej tam sim no ntawm cov cuab yeej siv hauv tsev kho mob thiab kev siv tshuaj tua kab tshiab tawm tshiab. Los ntawm kev txiav txim siab ntawm txoj kev cua ntim, qhov kev txiav txim siab ntawm hom lim hnab, xaiv qhov lim ceev, muab xam ntawm lub cheeb tsam lim, thiab cov hmoov av hmoov av Xaiv cov lus qhia thiab lwm yam kev ua haujlwm xaiv cov slag hmoov hnab lim , thiab daim ntawv thov ntawm PPC slag cua hnab mem tes plua plav plua av collector thiab LDMC loj ua tsis zoo lim hnab hmoov av hauv plawv slag.
Ntsiab lus: slag sib tsoo, hnab lim, xaiv, thov
1 Taw qhia
Moj tej tawg cub tawg yog cov khib nyiab pov tseg los ntawm cov txheej txheem cov hlau thiab cov hlau cog. Lub teb chaws hlau thiab steel qhauj tawm tau tsim txog 120 lab tons ntawm slag txhua lub xyoo. Cov slag yog hauv pem teb ua hmoov zoo ntawm slag, uas hloov cov xis mas yog sib npaug. Nws tuaj yeem hloov cov khoom pov tseg rau hauv cov khoom muaj nqis thiab txuag cov cement ntau lawm. Cov ntaub ntawv yuav tsum tau yog ib qho tseem ceeb uas yuav tsim muaj kev lag luam thiab nrhiav kev lag luam. Slag hmoov yog ib yam tshiab ntawm cov pob zeb sib xyaw ua ke thiab kev sib xyaw zoo cement sib xyaw khoom. Nws cov khoom raw yog moj tej tawg ua rau khoob khuab nyiab hauv kev lag luam hlau. Nws yog ib qho tshiab tiv thaiv khoom uas tiv thaiv lub ntiaj teb ib puag ncig thiab siv cov chaw pov tseg cov chaw pov tseg. Nyob rau hauv kaum xyoo dhau los, ntau lub tuam txhab loj cov tuam txhab steel tau ua lag luam Cov slag sib tsoo ntau lawm ua tau tsim, thiab lub pob slag hmoov project tau teev tseg raws li lub ntsiab lus tseem ceeb hauv txoj kev lag luam uas tsis yog kev lag luam hlau.
Cov cuab yeej davhlau ya nyob twg rau qhov slag hniav sib tsoo yog lub hnab lim. Lub hnab lim muaj ob txoj hauv kev sau cov khoom tiav thiab kev tiv thaiv ib puag ncig ploj, thiab plays lub luag haujlwm tseem ceeb hauv kev sib tsoo. Cov pa roj carbon dioxide exhaust system yog ua raws li tus qauv tshiab "Emission Standard for Air Pollutants nyob rau hauv Kev Txiav Txim Siab" (GB4915-2004). Tus txheej txheem tshiab sau ib daim ntawv cog lus nruj heev ntawm kev tso pa tawm ntawm lub hnub nyoog: txij Lub Xya Hli Ntuj 1, 2006 txog As Kaum Ob Hlis 31, 2009, kev tso pa tawm ntawm cov khoom siv hauv cov pa nkev ntawm cov kab uas twb muaj lawm 50 mg / Nm3, thiab txij li Lub Ib Hlis 1, 2010, qhov kev tso cai siab emission yog 30 mg / Nm3; txij li xyoo 2005 Hauv 1 lub hli, qhov kev tso cai ntawm qhov teeb meem me me hauv cov pa yeeb nkab ntawm cov kab tshiab ntau lawm yog 30mg / Nm3. Yuav kom haum rau tus txheej txheem tshiab, kev xaiv ntawm ib hom tshiab ntawm cov khoom siv hluav taws xob ntau lub hnab lim yog ib qho kev coj tsis ncaj hauv kev xaiv tsim.
2. Yam ntxwv ntawm Plua Av Pa Hauv Cov Cuav Sib Tsoo
Yuav kom ua zoo dua ua si lub peev xwm ntawm slag, nws yog ib qhov tsim nyog los zom cov slag. Los ntawm cov "moj tej tawg pleev cov nplais rau hauv cov nplais thiab cov pob zeb siv" (GB / T18046-2000), qhov ntev tshaj li qhov slag qhov chaw ntom ntws tawm ntawm 420 ~ 450m2 / kg, S95 qib nyob hauv tus qauv yuav tsum tau ntsib . Qhov no tsis tsuas yog txaus siab rau qhov kev tsim nyog ntawm cov chaw lag luam cog qoob yuav muab 42.5 mus rau 52.5 slag cement (30% mus rau 50% ntawm slag ntsiab lus), tab sis kuj muaj raws li qhov yuav tsum tau npaj kom txhij-mixed qhob tuam txhab kom muaj kev teeb tsa loj tshaj C60 pob zeb. Raws li cov khoom siv tam sim no, ntsug zeb, cov menyuam xovxwm, pob zeb, thiab kev siv tshuaj zeb siv tau los siv rau txoj kev sib tsoo zaum kawg, los yog kev sib xyaw ua ke ntawm ntsug zeb + pob zeb, menyuam xovxwm + pob zeb. Nyob rau hauv xyoo tas los, qhov kawg kev sib txeeb txheej txheem siv ntsug mills los tsim slag nplua tau ua ib qho thiab tau tsim sai heev.
Kev sib zog sib dhos hauv cov nplhaib feem ntau muaj cov yeeb yam nram qab no:
(1) Cov hmoov av hmoov zoo. Kev sib tsoo cov cwj pwm (slag hmoov) mus rau ib qho kev ua tiav (thaj chaw ntawm qhov deg) muaj peev xwm tuaj yeem koom tes rau hauv cov tshuaj tiv thaiv dej thiab ua rau kev ua haujlwm, tab sis tib lub sijhawm, nws tseem muaj feem xyuam nrog cov khoom sib xyaw, thiab qhov tshwj xeeb ntawm thaj chaw loj dua rau ntau yam nplua hais. Qhov tshwj xeeb ntawm thaj chaw thiab cov hmoov tshauv ntawm cov khoom sib txawv ntawm cov ntxhiab micron pour yog tshwm sim hauv Table 1. Nws tuaj yeem pom ntawm Daim Ntawv Ntu 1 tias nyob hauv tus qauv sab nrauv uas teev los ntawm tus txheej txheem, ib qho uas muaj tsawg tshaj li 10 μm nyiaj rau 58% ntau tshaj fly ash thiab P.0525 xis mas. Nws pom tau tias cov hmoov slag hmoov muaj ib qhov me me thiab muaj zog levitation hauv cov pa roj cua, uas ua rau nws nyuaj tshem tau cov hmoov av.
(2) High-concentration hmoov av. Txawm hais tias tsis muaj kev sib tw pob zeb los yog txoj kev sib tsoo ntawm kev sib tsoo, vim qhov kev tshem tawm ntawm cov hmoov av hauv plob hav zoov tau los ntawm cov plua plav khoom plua plav, cov plua plav uas muaj cov plua tshauv-muaj cov pa roj ntawm cov ciaj pob sib tsoo muaj feem ntau, feem ntau yog 400-1000 g / m3.
(3) Lub plua tsho muaj cov dej noo noo. Vim hais tias cov dej muab tua tawm qhwv tau muaj cov dej loj, qee zaum muaj li 15% mus rau 20%, nws nyuaj rau tshem tawm cov dej noo ua ntej nkag rau hauv lub zeb. Thaum lub txheej txheem milling, ib qho loj npaum li cas ntawm tshav kub yog generated. Cov ntsug zeb tseem muaj kev kub hnyiab rau cov cua kub rau lub zeb. Tshuab, cov khoom tiav cov hmoov tshuaj tiv thaiv hauv 0.5% ~ 1.2%, nrog rau cov pa roj hauv lub hnab lim hmoov zoo ua tau yooj yim ua rau lub hnab qhov teeb meem tshwm sim.