Lub qhov cub preheating tau muab faib ua ob theem: ntoo (hnyav roj lossis coke kuj siv) thiab hluav taws xob ci. Lub hom phiaj tseem ceeb ntawm yav dhau los yog ci cov electrodes hauv kev npaj rau hluav taws xob ci. Qhov tom kawg yog rau ziab lub tshuab ua cua sov hauv ob sab phlu, coking cov electrode muab tshuaj txhuam rau hauv cov pa roj carbon cij seams thiab nce qhov kub ntawm lub qhov cub hauv ob sab phlu, thiab npaj rau lub qhov cub qhib.
Qhov zoo ntawm lub cub tawg yog ncaj qha ntsig txog lub neej kev pab cuam ntawm lub qhov cub hauv ob sab phlu thiab seb qhov kev pub mis yog qhov qub lossis tsis zoo. Nws tuaj yeem pom tau tias lub qhov cub preheating yog ib txheej txheem tseem ceeb heev.
Cov kev npaj hauv qab no yuav tsum tau ua ua ntej preheating lub qhov cub:
1. Nruab lub plhaub electrode thiab muab cov electrode muab tshuaj txhuam nrog ib qho me me ntawm 50 mus rau 70 hli rau hauv nws. Tus nqi ntawm electrode paste feem ntau yog tswj rau qhov siab ntawm kab ntawv paste mus rau 2 meters saum cov pobzeb tooj. Tom qab kev teeb tsa, npog nws nrog lub hau ntoo kom tsis txhob muaj plua plav. poob rau hauv. Thaum lub sij hawm electrode ci txheej txheem, raws li qhov saum npoo ntawm qhov muab tshuaj txhuam txo qis, ntxiv electrode paste yuav tsum tau ntxiv raws li.
2. Muab cov electrode rau ntawm 65 hli tuab txheej ntawm av nplaum cib nteg rau hauv qab ntawm lub cub tawg. Qhov ntev ntawm kev ua haujlwm kawg ntawm cov electrode yuav tsum dhau ntawm ntug ntawm lub qhov cub qhov ncauj los ntawm kwv yees li 100 txog 200 hli. Ib txheej ntawm coke nrog lub thickness ntawm txog 100 mm thiab ib tug particle loj ntawm 40 mus rau 50 mm yog kis nyob rau hauv qab ntawm lub cub tawg.
3. Kho qhov nruab nrab ntawm lub electrode kom lub siab ntawm txhua lub pobzeb tooj liab ntawm lub electrode yog sib npaug.
4. Cov dej txias, conduction thiab hoisting tshuab tau sim ib txwm.
ntoo preheating rauv
Lub sij hawm xav tau rau lub qhov cub preheating yog nyob ntawm txoj kab uas hla ntawm electrode (los yog qhov cub muaj peev xwm), thiab feem ntau tsis pub tsawg tshaj 24 teev. Thaum lub electrode nyob rau sab sauv ntawm cov pobzeb tooj liab yog pierced nrog ib tug hlau solder thiab cov muab tshuaj txhuam tsis ntws (nyob rau hauv ib lub xeev yas), nws txhais tau hais tias cov ntoo preheating rauv yuav ua kom tiav. Cov nplaim taws ntawm lub qhov cub preheating yuav tsum luv dua nyob rau theem pib thiab ntev dua nyob rau theem tom ntej. Nws yog qhov zoo tshaj plaws kom tshaj cov khoom siv electrode. Cov dej txias yuav tsum tau txo kom tsawg. Lub kiv cua yuav tsum tau muab tso rau hauv thiab tawm kom cov electrode muab tshuaj txhuam rau ntawm qhov chaw los ntawm melted kiag li thiab tsis cuam tshuam cov electrode roasting. Tus nqi ntawm cov ntoo xav tau rau lub qhov cub preheating yog nyob ntawm qhov loj ntawm lub qhov cub, feem ntau 20 txog 70 tons.
Electric preheating rauv
1. Cov dej num hauv qab no yuav tsum tau ua ua ntej siv hluav taws xob preheating rauv:
(1) Tshem tawm cov ntoo tshauv ntawm lub qhov cub, thiab tom qab ntawd nteg ib txheej ntawm coke nrog ib lub thickness ntawm li 250 mus rau 300 hli thiab particle loj ntawm 25 mus rau 40 hli.
(2) Tight tooj liab vuas.
(3) Tshawb xyuas seb cov dej txias, cov kav dej thiab cov tshuab hoisting puas zoo li qub.
2. Siv qhov hluav taws xob qis dua thiab txo cov electrode tom qab lub zog ua kom nws nyob rau hauv kev sib cuag nrog cov coke. Txhawm rau kom ruaj khov ntawm lub nra, koj tuaj yeem ntxiv qee coke nyob ib ncig ntawm lub electrode thiab tsim lub khob hliav qab. Lub hwj chim mov system yog nqa tawm raws li lub compiled power supply system rooj. Lub hauv paus rau kev tsim cov khoom siv hluav taws xob yog:
(1) Nyob ntawm qhov luaj li cas ntawm lub cub tawg, lub sij hawm hluav taws xob preheating yog 30 mus rau 50 teev, thiab tag nrho cov hwj huam siv yog 20, 000 mus rau 100, 000 degrees.
(2) Tam sim no maj mam nce thaum lub sij hawm hluav taws xob preheating txheej txheem, thiab qhov siab tshaj plaws tam sim no nyob rau thaum xaus ntawm lub sij hawm hluav taws xob preheating yuav tsum tsis pub tshaj 50% ntawm cov ntsuas tam sim no.
3. Thaum lub sij hawm hluav taws xob preheating txheej txheem, yuav tsum muaj li ob peb txav electrodes li sai tau thiab cov load tshuav ntawm txhua theem yuav tsum tau tswj.
4. Thaum lub electrode dheev emit ib tug loj npaum li cas ntawm cov pa taws daj, lub load yuav tsum tau txo.
5. Thaum cov pa tawm ntawm qhov qhov cua ntawm lub qhov cub hauv ob sab phlu tuaj yeem ua rau kub hnyiab tau thiab qhov kub ntawm lub plhaub ntawm lub cub tawg mus txog 70 ~ 80 degree, hluav taws xob preheating tuaj yeem ua tiav.
