Q1. Qhov ntau thiab tsawg feem ntau muaj rau FeV50?
Cov neeg tsim khoom feem ntau muab FeV50 hauv ob qhov dav, txhua qhov haum rau cov cwj pwm sib txawv:
| Qhov Loj Loj | Hom Siv Case |
|---|---|
| 10-50 mm | Siv dav hauv BOF / EAF tapping thiab ladle ntxiv; ruaj khov melting ceev. |
| 10-60 hli | Nyiam thaum cov tswv lag luam xav kom qeeb qeeb me ntsis los yog txo cov nqi nplua. |
| Nyiaj nplua<10 mm | Feem ntau minimized; thaj chaw siab ua rau oxidation poob. |
Mills tsis tshua lees txais kev nplua nyiaj ntau vim tias lawv cuam tshuam cov txiaj ntsig ntawm cov khoom lag luam thiab rov ua dua qhov kev kwv yees.
Q2. Vim li cas qhov loj me tseem ceeb heev hauv FeV50 dissolution?
FeV50 yuav tsum yaj sai txaus kom faib cov vanadium tusyees, tab sis tsis ceev heev uas oxidation spikes los yog yield poob. Loj txiav txim:
thaj chaw saum npoo muaj rau cov tshuaj tiv thaiv,
melting ceev,
oxygen raug,
vanadium rov zoo sib xws,
lub sij hawm ntawm VC/VN tsim nyob rau hauv lub yaj txoj kev.
Cov khoom loj tuaj yeem nyob hauv qhov cub thiab txo qhov rov qab; undersized pieces oxidize heev aggressively.
Q3. Qhov loj npaum li cas muab qhov zoo tshaj plaws sib npaug rau niaj hnub steelmaking?
Rau feem ntau txoj kev BOF thiab EAF,10-50 mmyog suav tias yog qhov kev ntseeg siab tshaj plaws "tag nrho- lub hom phiaj" ntau yam. Nws muaj:
ceev tab sis tswj kev tawg thaum tapping,
ruaj khov rov qab los ntawm cov cua sov,
kev sib raug zoo nrog slag,
txo nqi nplua tsim thaum thauj thiab them nqi.
Qhov no yog vim li cas ntau lub mills qhia 90-95% ntawm cov khoom nyob rau hauv no bracket rau niaj hnub FeV50 ntxiv.
Q4. Thaum twg lub zeb yuav nyiam cov granularity loj xws li 10-60 mm?
Qee qhov kev ua haujlwm txhob txwm xaiv ib qho me ntsis coarser ntau yam:
High tapping kub:qeeb dissolution tiv thaiv vanadium poob.
Lub sijhawm ua kom zoo dua:tsawg dua qhov chaw txo oxidation ntawm slag-hlau interface.
Kev suav nruj nruj- tswj cov kev pab cuam:cov khoom loj dua pab kom tsis txhob muaj qhov tshwm sim ntxov ntxov.
Txawm li cas los xij, cov mills tseem yuav tsum tsis txhob muaj ntau dhau, raws li cov khoom saum toj no ~ 60 mm muaj kev pheej hmoo tsis tiav melting hauv nruj- cov txheej txheem sijhawm.
Q5. Yuav ua li cas mills ntsuas FeV50 qhov loj me ntawm kev faib tawm ntawm COA?
COA yuav tsum muaj kev cuam tshuam tsis yog qhov nominal ntau, tab sisfeem pua ntawm pawgnyob rau hauv txhua lub bracket. Ib qho kev ntsuam xyuas zoo zoo li no:
| Loj Bracket | Dab tsi Mills feem ntau xav tau |
|---|---|
| >50 or >60 mm | Tsawg heev; tsis txhob qeeb lossis tsis tiav melting. |
| 10-50mm los yog 10-60mm | Feem ntau ntawm qhov loj; ua kom paub tseeb tias yaj tus cwj pwm. |
| <10 mm fines | Tsawg heev; khaws oxidation thiab yield poob nyob rau hauv kev tswj. |
Kev sib raug zoo ntawm ntau ntau yog qhov tseem ceeb tshaj qhov muaj qhov nqaim zoo kawg nkaus.
txog peb
Yog tias koj xaiv FeV50 rau BOF lossis EAF kev ua haujlwm, qhov loj tshaj plaws yog nyob ntawm koj lub sijhawm yaj, tapping kub, rov qab lub hom phiaj, thiab kev txwv tsis pub dhau - tsis yog qib nominal vanadium xwb.
Peb muab FeV40, FeV50, FeV60, thiab FeV80 nrog ruaj khov granularity tswj hauv10-50 mmthiab10-60 hlithaj tsam.
Yog tias koj xav tau qhov kev pom zoo loj thiab cov lus hais meej, tsuas yog qhia:
qib / qhov loj / ntau / qhov chaw / lub qhov rais xa khoom.
Kuv mam li npaj qhov tseeb, spec-muab sib koom ua ke nrog COA cov ntsiab lus.
