Qhov cuam tshuam ntawm qhov sib faib ntawm cov khoom me me ntawm cov khoom siv coke rau ntawm qhov permeability ntawm cov txheej khoom thiab qhov sib xws ntawm calcination hauv lub qhov cub rotary tuaj yeem tshuaj xyuas los ntawm kev sib raug zoo ntawm cov ntsuas qhov loj me thiab cov txheej txheem qhia raws li hauv qab no:
I. Kev Cuam Tshuam Ntau ntawm Kev Faib Tawm Qhov Loj ntawm Cov Khoom Me Me rau Kev Nkag Tau ntawm Cov Txheej Khoom Siv
Kev Sib Npaug Loj ntawm Cov Khoom Me Me (Tus Nqi PDI)
- Kev Txhais: Qhov ntsuas kev faib tawm ntawm qhov loj ntawm cov khoom me me (PDI = D90/D10, qhov twg D90 yog qhov loj ntawm lub sieve uas 90% ntawm cov khoom me me hla dhau, thiab D10 yog qhov loj ntawm lub sieve uas 10% ntawm cov khoom me me hla dhau).
- Tus Qauv Cuam Tshuam:
Tus nqi PDI me dua (qhia txog qhov loj me ntawm cov khoom sib xws) ua rau muaj qhov porosity siab dua ntawm cov txheej khoom, nrog rau qhov permeability index (K tus nqi) nce ntxiv kwv yees li 15% txog 20%. - Cov Ntaub Ntawv Sim:
Thaum PDI txo qis los ntawm 2.0 mus rau 1.3, qhov siab poob hauv lub qhov cub txo qis 22%, thiab cov roj ntws nce ntxiv 18%, qhia txog kev txhim kho zoo hauv kev nkag mus. - Lub Tshuab:
Qhov loj ntawm cov khoom me me sib npaug txo qhov tshwm sim ntawm cov khoom me me uas puv qhov sib txawv ntawm cov khoom loj, zam qhov "particle bridging" effect thiab yog li txo qhov kev tiv thaiv cua.
Cov Khoom Me Me (<0.5 hli)
- Qhov Tseem Ceeb Tshaj Plaws:
Thaum qhov feem pua ntawm cov khoom me me tshaj 10%, qhov permeability poob qis heev. - Kev Sib Txheeb Ze Ntawm Qhov Ntau:
Rau txhua 5% ntawm cov khoom me me nce, qhov siab poob hauv lub qhov cub nce li ntawm 30%, thiab qhov nrawm ntawm cov pa roj txo qis 25%. - Kev Kawm Txog Cov Ntaub Ntawv:
Hauv lub qhov cub roj av coke calcination, thaum cov ntsiab lus me me nce ntxiv ntawm 8% mus rau 15%, lub siab tsis zoo ntawm lub taub hau qhov cub nce ntxiv ntawm -200 Pa mus rau -350 Pa, ua rau muaj kev nce ntxiv ntawm lub zog kiv cua kom tswj tau kev ua haujlwm, ua rau muaj kev siv hluav taws xob nce 12%.
Qhov Nruab Nrab Particle Loj (D50)
- Qhov Zoo Tshaj Plaws:
Qhov permeability zoo tshaj plaws yog ua tiav thaum D50 nyob nruab nrab ntawm 8 thiab 15 hli. - Kev Cuam Tshuam Ntawm Kev Sib Txawv:
Thaum D50 tsawg dua 5 hli, qhov porosity ntawm cov txheej khoom txo qis dua 35%, thiab qhov permeability index poob qis 40%;
Thaum D50 tshaj 20 hli, txawm hais tias qhov porosity siab, thaj chaw sib cuag ntawm cov khoom me me txo qis, txo qhov ua haujlwm hloov pauv cua sov los ntawm 15% thiab cuam tshuam tsis ncaj qha rau qhov calcination uniformity.
II. Kev cuam tshuam ntawm qhov ntau ntawm qhov loj ntawm cov khoom me me rau kev sib npaug ntawm Calcination
Kev Faib Tawm Kub Qhov Sib Txawv (σT)
- Kev Txhais Lus:
Ib qho cim qhia txog qhov hloov pauv ntawm qhov kub thiab txias hauv lub qhov cub, nrog rau σT me dua qhia txog kev calcination sib xws. - Kev Cuam Tshuam ntawm Qhov Loj ntawm Cov Khoom Me Me:
Thaum qhov loj ntawm cov khoom me me sib xws (PDI <1.5), σT tuaj yeem tswj tau hauv ±15 ℃;
Thaum qhov loj ntawm cov khoom me me tsis sib xws (PDI > 2.5), σT nthuav dav mus txog ± 40 ℃, ua rau muaj kev kub hnyiab hauv zos lossis kub hnyiab qis dua. - Kev Kawm Txog Cov Ntaub Ntawv:
Hauv lub qhov cub ua los ntawm cov hlau txhuas uas tig tau, los ntawm kev ua kom zoo dua qhov faib tawm ntawm cov khoom me me kom txo tau PDI ntawm 2.8 mus rau 1.4, qhov sib txawv ntawm cov ntsiab lus volatile hauv cov khoom txo qis los ntawm 0.8% mus rau 0.3%, ua rau kev sib npaug ntawm calcination zoo dua.
Kev Tawm Tsam Pem Hauv Ntej Kev Tawm Tsam Ceev (Vr)
- Kev Txhais Lus:
Qhov ceev ntawm lub zog ntawm qhov sib txuas ntawm cov tshuaj calcination hauv cov txheej txheej khoom, uas qhia txog kev ua haujlwm ntawm calcination. - Kev sib raug zoo nrog qhov loj ntawm cov khoom me me:
Rau txhua 10% nce ntxiv hauv qhov sib piv ntawm cov khoom me me (<3 mm), Vr nce ntxiv kwv yees li 25%, tab sis nws yog qhov ua rau muaj kev cuam tshuam sai dhau thiab kev kub hnyiab hauv zos;
Rau txhua 10% nce ntxiv hauv qhov feem pua ntawm cov khoom me me (> 20 hli), Vr txo qis 15% vim muaj kev tiv thaiv cua sov ntau ntxiv. - Qhov Sib Npaug:
Thaum qhov faib tawm ntawm cov khoom me me yog bimodal (piv txwv li, kev sib xyaw ntawm 3-8 hli thiab 15-20 hli cov khoom me me), Vr tuaj yeem tswj tau hauv qhov ntau thiab tsawg zoo tshaj plaws (0.5-1.0 hli / feeb) thaum ua kom muaj kev sib xws.
Tus Nqi Tsim Nyog Khoom (Q)
- Kev Sib Txheeb Ze Ntawm Qhov Ntau:
Rau txhua 0.5 unit nce hauv qhov loj me ntawm cov khoom me me (piv txwv li, qhov txo qis hauv PDI tus nqi), tus nqi tsim nyog ntawm cov khoom nce ntxiv kwv yees li 8%;
Rau txhua 5% txo qis ntawm cov khoom me me, qhov nqi pov tseg vim yog kev kub hnyiab tsawg lossis kub hnyiab ntau dhau txo qis 12%. - Cov Ntaub Ntawv Kev Lag Luam:
Hauv lub titanium dioxide rotary kiln, los ntawm kev tswj cov khoom me me ntawm cov khoom siv raw coke (D50 = 12 hli, PDI = 1.6), qhov sib txawv ntawm cov khoom dawb txo qis los ntawm 1.2 mus rau 0.5, thiab cov khoom qib ib nce ntxiv los ntawm 75% mus rau 92%.
III. Cov Lus Qhia Txog Kev Txhim Kho Kom Zoo Dua
Lub Hom Phiaj Tswj Qhov Loj ntawm Cov Khoom Me Me:
- D50: 8-15 hli (kho tau raws li cov yam ntxwv ntawm cov khoom);
- PDI: <1.5;
- Cov khoom me me (<0.5 hli) cov ntsiab lus: <8%.
Cov Tswv Yim Kho Kom Zoo Dua:
- Txais yuav ntau theem crushing thiab tshuaj ntsuam cov txheej txheem kom ntseeg tau tias muaj cov khoom me me sib xyaw;
- Ua kev kho ua ntej (piv txwv li, briquetting) rau cov khoom me me kom txo qhov poob ntawm cov khoom seem;
- Ua kom zoo dua qhov kev hloov pauv ntawm qhov loj me ntawm cov khoom me me raws li hom qhov cub (qhov sib piv ntawm qhov ntev mus rau txoj kab uas hla, qhov ceev ntawm kev tig), piv txwv li, siv cov khoom me me ua cov khoom tseem ceeb rau cov qhov cub ntev thiab ntxiv cov khoom me me rau cov qhov cub luv.
Kev Saib Xyuas thiab Kev Tawm Tswv Yim:
- Nruab cov khoom ntsuas qhov loj ntawm cov khoom me me hauv online los saib xyuas qhov faib tawm ntawm cov khoom me me uas nkag mus rau hauv lub cub tawg hauv lub sijhawm tiag tiag;
- Ua ke nrog kev suav lej ntawm cov kua dej (CFD) ntawm qhov kub thiab txias hauv lub qhov cub kom hloov kho qhov loj me ntawm cov khoom me me thiab cov txheej txheem calcination.
Lub sijhawm tshaj tawm: Plaub Hlis-16-2026