Magnesia cibyog ib qho tseem ceeb refractory khoom siv dav siv nyob rau hauv ntau yam high-temperature industrial furnaces. Nws cov khoom siv raw thiab cov txheej txheem tsim khoom ua lub luag haujlwm tseem ceeb hauv kev ua kom zoo thiab kev ua haujlwm ntawm magnesite cib.
Cov ntaub ntawv raw siv hauv magnesite refractory cib feem ntau suav nrog magnesite, dolomite thiab seawater magnesia. Cov ntaub ntawv nyoos no yog nplua nuj nyob hauv magnesium oxide (MgO), uas yog cov tshuaj lom neeg tseem ceeb hauv kev ua cov pob zeb magnesia. Ntawm lawv, magnesite yog cov khoom siv raw tshaj plaws. Nws muaj magnesium oxide cov ntsiab lus, zoo crystallization, kub stability thiab corrosion kuj.
Dab tsi yog cov txheej txheem tsim ntawm magnesia bricks?
Nyob rau hauv cov nqe lus ntawm kev siv tshuab, kev tsim cov txheej txheem ntawm magnesia hluav taws cib feem ntau suav nrog cov kauj ruam xws li crushing, batching, mixing, shaping thiab firing. Ua ntej ntawm tag nrho cov, cov magnesia siv los tsim magnesia refractory bricks yog feem ntau natural magnesia. Cov ntsiab lus MgO hauv magnesia yog nyob nruab nrab ntawm 89% thiab 98%.
Cov pob zeb magnesia nrog MgO cov ntsiab lus ntau dua 46.0% yog siv, sib xyaw nrog cov khoom siv roj, thiab calcined rau hauv lub qhov cub kom tsim cov magnesium nrog cov ntsiab lus MgO ntawm 89% mus rau 92%; Maj mam hlawv, ces finely av, tov nrog dej, nias rau hauv cov pob, tov nrog cov khoom roj blocks thiab calcined nyob rau hauv ib tug ntsug kiln los tsim magnesia. Cov ntsiab lus MgO yog kwv yees li 95%, tseem hu ua mid-grade magnesia. Siv magnesia nrog cov ntsiab lus MgO ntau dua 47%. Tom qab lub teeb hlawv, sib tsoo zoo, qhuav briquetting, thiab ultra-high kub roj kiln calcination, cov magnesia tsim muaj MgO cov ntsiab lus ntawm 96.5% mus rau 98%, uas yog hu ua high-purity magnesia. Cov ntaub ntawv raw yog crushed thiab soj ntsuam kom zoo sib tov thiab shaping.
Tom ntej no, cov khoom xyaw thiab kev sib tov yog ua raws li qhov yuav tsum tau muaj qhov sib piv ntawm cov cib, cov khoom sib xyaw yog nias los ntawm lub tshuab tsim los ua ib lub cev magnesia cib nrog cov duab thiab qhov loj me. Thaum kawg, lub cev ntsuab tau muab tso rau hauv qhov cub kub kub rau kev tua hluav taws kom ua tiav cov khoom siv lub cev thiab tshuaj lom neeg.
Thaum lub sij hawm firing txheej txheem, qhov kub thiab lub sij hawm yuav tsum tau nruj me ntsis tswj los xyuas kom meej lub degree ntawm sintering thiab tsim cov crystal qauv ntawm magnesia bricks. Tsis tas li ntawd, kev saib xyuas yuav tsum tau them nyiaj rau kev tswj cov cua hauv qhov cub kom tsis txhob muaj kev cuam tshuam ntawm oxidation lossis txo cov kev cuam tshuam ntawm kev ua haujlwm ntawm magnesite refractory cib.
