Cov txheej txheem ntau lawm ntawmMagnesia Carbon CibTsis nyuaj, tab sis tsim cov khoom lag luam zoo, txhua cov txheej txheem txuas yuav tsum tau ntsuas nruj, moulding, moulding, cua sov (ziab) yog qhov tshwj xeeb yog qhov tseem ceeb hauv kev tsim khoom.
01 Crushing Crushing yog cov txheej txheem ua cov khoom loj loj rau hauv cov khoom loj me me. Nws yog ib qho txheej txheem indispensable hauv kev tsim cov ntaub ntawv refractory. Txawm hais tias nws yooj yim, nws yog ib qho tseem ceeb heev. Nws muaj qhov cuam tshuam tseem ceeb rau kev ruaj khov ntawm cov khoom lag luam zoo. Nyob rau tib lub sijhawm, cov khoom siv crushing muaj cov hluav taws xob siab, hnav siab thiab ua kua muag siab, yog li tus nqi kho mob siab. Them sai sai rau crushing, cov khoom lag luam ruaj khov, txuag lub zog thiab kev noj haus. Lub hom phiaj ntawm kev tsoo hauv kev tsim cov khoom siv cov roj hlau carbon cib feem ntau yog npaj cov ntaub ntawv raw ntawm ntau qhov ntau thiab tsawg particle. Ua kom cov khoom muaj txiaj ntsig ntawm cov khoom qub thiab rhuav tshem cov khoom lag luam kom puas, yog li nrawm nrawm ntawm cov khoom siv.
02 batching (weighing (weighing) batching yog cov txheej txheem ntawm kev sib txuas cov khoom sib txawv thiab cov khoom sib txawv raws cov khoom tsim qauv. Cov txheej txheem Batching txawv raws li hom thiab lub xeev ntawm cov ntaub ntawv raw. Qhov hnyav batching txoj kev feem ntau yog siv nyob rau hauv kev tsim cov tshuaj magnesia carbon cib vim qhov hnyav batching txoj kev muaj qhov tseeb thiab feem ntau tsis tshaj 2%. Feem ntau siv cov khoom hnyav batching suav nrog cov phau ntawv uas nplai, hnyav tsheb, thiab lwm yam. Cov qauv tswj hwm thiab tsis siv neeg tswj hwm.
03 Kev npaj ntawm mud (tov, sib xyaw)
The purpose of mixing is to make the material composition uniform and to maximize the contact surface between different materials. Qhov kev sib xyaw ntawm cov khoom siv refractory yog ib txoj kev ntawm homogenizing cov ntaub ntawv nrog extrusion, kneading, thiab sab kawg nkaus. Like any mixing of powders, the mixing of refractory materials is also carried out step by step, and the mixing process is more complicated due to the different components, particle sizes, binders and admixtures of the materials. Muaj ntau hom ntawm cov roj magbon hluav taws kub. Cov qauv sib txawv raws li cov sib txawv ntawm lawv siv. Lub ntsiab hloov yog qhov zoo ntawm magnesia xuab zeb, qhov ntau ntawm graphite ntxiv, thiab hom thiab cov nqi ntxiv. Piv txwv li, nyob rau hauv lub slag kab ntawm lub ladle, nyob rau hauv thiaj li yuav txhim kho lub sleag tiv taus carbon cib, qhov zoo thiab cov graphite ntxiv yuav tsum tau nce. Yog tias cov ntsiab lus carbon yog tsawg dua 10%, txuas ntxiv rau hauv cov pa roj carbon ntau, thiab cov yam ntxwv ntawm cov pa roj carbon ntau, thiab thermal poob siab ntawm cov magnesia carbon cib. Yog tias cov ntsiab lus carbon ntau dhau, nws yuav tsis tsuas yog teeb meem rau kev tsim cov roj magbon tua hluav taws, tab sis kuj tseem ua kom recractory cib yooj yim rau oxidize. Yog li no, cov pa roj carbon hauv mgoc cib feem ntau tswj tau ntawm 10% thiab 20%. Txhawm rau ua kom cov Magnesia xuab zeb me me txawm qhwv nrog cov ntsiab lus hauv qab no: thawj zaug, tom qab ntawd cov kab ke, thiab thaum kawg cov hmoov zoo thiab ntau yam ntxiv. Graphite muaj qhov ceev me me, yog qhov yooj yim kom ntab, thiab tus nqi ntxiv rau kev sib xyaw, yog li nws yuav tsum tau sib xyaw tag nrho nws tau ua rau ntev thiab ntawm kev siv siab. Txawm li cas los xij, lub binder yuav yaj thiab qhuav thaum lub sij hawm sib xyaw. Yog tias lub sijhawm ntev dhau, cov graphite thiab cov hmoov zoo qhwv ntawm cov lus yuav poob, yog li lub sijhawm sib xyaw yuav tsum tau tswj hwm.
04 moulding
Muaj ntau cov qauv sib xyaw sib txawv rau cov ntaub ntawv refractory. Magnesium carbon cib yog ib nrab qhuav nias. Ib nrab-qhuav moulding tsis nruj heev ntawm cov cai ntawm cov av cov khoom, thiab cov txheej txheem yooj yim. Thaum lub sij hawm pressurization txheej txheem, vim muaj cov ntsiab lus noo noo ntawm cov av nkos, yuav tsum tau siv ntau dua los yuam kom nruj nreem ua ke. Raws li kev txiav txim ntawm kev quab yuam sab nraud, cov lus tau muab tshem tawm, cov pa roj ua ke thiab tom qab ntawd lub zog yog tsim los tsim lub cev ntsuab nrog qee yam duab. Qhov tseem ceeb tshaj plaws hauv ib nrab-qhuav moulding yog sab nraud siab. Tsis pub dhau ib qho siab ntau, qhov loj ntawm sab nraud siab ncaj qha txiav txim siab cov ntau yam ntawm cov magbon cib. Nrog rau kev nce siab, qhov ceev ntawm lub cev ntsuab nce ntxiv, qhov porosity txo qis, thiab lub zog nce. Magnesium carbon cib nrog ua tau zoo heev muaj ib yam nyob rau hauv ib qho, uas yog, magnesium carbon cib muaj lub ntim loj thiab porosity loj. Magnesium carbon cib nrog qhib porosity tsawg dua 4% muaj qhov kev yaig tsawg heev. Lub hom phiaj ntawm kev molding yog los ua rau lub koom haum qauv ntawm cov hlau magnesium carbon cib. Txij li thaum Magnesium carbon cib moulding yog cov txheej txheem ib nrab, nws yuav tsum tau pwm nyob rau hauv siab. Txij li cov av nplaum siv rau kev tso pwm me me thiab muaj cov ntsiab lus mactre, cov pwm yuav tsum ua nruj ua haujlwm raws li cov cai, lwm yam kev sib tsoo lossis cov txheej txheem tawg. Nws yuav tsum yog lub teeb tom ntej thiab hnyav tom qab, lub teeb rauj tua kom qeeb, hnyav rauj tswj kev ntxhov siab thiab lub tsheb maj mam ua. Yog tias cov neeg mob tso cai, lub tshuab nqus tsev huab cua siv tau. Cov av nkos nyob rau hauv cov pwm kab noj hniav yog nqus ua ntej kev ntsuas, thiab tsis tas yuav tsum tso tawm thaum nias. Nyob rau hauv txoj kev no, txawm hais tias qhov ceev ntawm lub tshuab rauj nias yog nrawm dua, nws yuav tsis tawg lossis delamination ntawm magnesia carbon cib carbon cib. Nws yog qhov tshwj xeeb tshaj yog qhov tshwj xeeb tshaj yog rau cov khoom xws li cov pa roj carbon ntau ntawm cov pa hlau nplaum uas muaj txiaj ntsig zoo rau kev cuam tshuam.
05 kev kho cua sov (kom qhuav)
Kev kho cua sov ntawm magnesia carbon hluav taws kub, feem ntau yog lub Hoobkas hu tus txheej txheem no kom qhuav. Qhov tseeb, ziab tsis yog qhov tseeb txaus ntawm no, vim hais tias kom qhuav yog hais txog cov txheej txheem ntawm kev rho tawm cov dej muaj nyob hauv cov khoom. Ntxiv rau qhov tso dej tawm, cov txheej txheem kho cua sov ntawm cov hlau nplaum carbon firmicts kuj tseem muaj kev hloov pauv ntawm lub cev thiab tshuaj kho mob, yog li peb hu cov txheej txheem no kev kho kom sov. Kev kho cua sov ntawm cov roj magbon r rectractory cib muaj qhov cuam tshuam ncaj qha rau kev ua haujlwm ntawm MgoC cib. Cov txheej txheem kho cua sov ntawm cov hlau nplaum cov pa roj carbon firebricks yog qhov tseeb tus txheej txheem ntawm kev kho phenolic resin. Kev Kho Mob Kub Kub thiab lub sijhawm kho cua sov kom pom zoo txiav txim siab seb cov phenolic resin yog kho kiag. Tsis pub dhau qee qhov ntau, lub sijhawm rau lub resin los ua kom tiav yog inversely proportional rau kev kho qhov kub thiab txias, tab sis nws tsis yog txoj kev sib raug zoo linear. Kev tshawb fawb tau pom tias qhov ceev ntawm cov cib tsuas yog ua tiav thaum lawv kho cua sov nyob rau hauv qhov ntsuas kub. Yog tias kev kho kub kub kho cua sov yog qis dua qhov kub thiab txias tshaj plaws, tab sis yog tias nws siab dua li cov kev siv roj Magnesia, tab sis yog tias nws siab dua ntawm Magnesia C cib yuav poob sai. Rov tshawb nrhiav tau pom tias qhov ntsuas kub tshaj yog 200 degree ~ 250 degree.
