Hauv kev lag luam kev lag luam, cov khoom siv refractory ua haujlwm tseem ceeb los xyuas kom meej tias kev ua haujlwm zoo ntawm kev ua haujlwm siab - kub, thiab lawv qhov tseem ceeb yog qhov tseeb ntawm tus kheej -.Magnesium carbon bricks, nrog rau lawv cov kev ua tau zoo heev thiab kev siv dav, maj mam dhau los ua lub hnub qub ci ntsa iab hauv thaj chaw ntawm cov ntaub ntawv refractory thiab nyiam ntau xim los ntawm txhua qhov chaw.
Nyob rau hauv cov nqe lus ntawm nws muaj pes tsawg leeg, magnesium carbon bricks yog refractory ntaub ntawv nrog magnesium oxide thiab carbon raws li lub ntsiab Cheebtsam. Magnesium oxide, raws li alkaline oxide nrog lub siab melting point, muaj ib tug melting point siab txog 2800 degree, uas endows magnesium carbon cib nrog zoo heev - kub kuj. Cov pa roj carbon, tshwj xeeb tshaj yog graphite, tsis tsuas yog muaj qhov siab melting point thiab nyuaj rau infiltrated los ntawm lub cub tawg slag, tab sis kuj muaj ib tug kuj thermal conductivity, ib tug tsawg coefficient ntawm thermal expansion, thiab tsis tshua muaj elastic modulus. Cov khoom no tso cai rau magnesium carbon cib kom pom ntau qhov zoo tshaj plaws thaum ntsib qhov nyuaj siab - qhov kub thiab txias.
Hais txog kev ua tau zoo, magnesium carbon bricks muab ntau yam zoo. Lawv cov slag yaig kuj yog qhov zoo heev. Thaum lub sij hawm siab - kub txheej txheem kev lag luam, kev yaig ntawm ntau lub cub tawg slags ntawm cov khoom siv hauv cov khoom siv hluav taws xob yog qhov teeb meem loj. Magnesium xuab zeb muaj zog tiv thaiv alkaline slags thiab siab - hlau slags. Ntxiv mus, vim yog lub kaum sab xis loj ntawm graphite rau lub cub tawg slags, magnesium carbon cib tuaj yeem tiv taus qhov yaig ntawm lub cub tawg slags, zoo heev ua rau kev pab cuam lub neej ntawm lub qhov cub hauv ob sab phlu.
Lub slag permeability ntawm magnesium carbon bricks yog tsawg heev. Cov yam ntxwv no ua rau nws nyuaj rau lub qhov cub slags nkag mus rau sab hauv ntawm cov cib thaum lub sijhawm ua haujlwm siab - kub, zam kev puas tsuaj thiab kev ua haujlwm tsis zoo ntawm cov cib tshwm sim los ntawm kev nkag mus rau slag, thiab ntxiv kom ntseeg tau tias lawv ruaj khov thiab kev ntseeg siab nyob rau hauv ib puag ncig hnyav.
Lub thermal shock stability ntawm magnesium carbon bricks yog qhov zoo kawg nkaus. Lub tshuab hluav taws xob feem ntau muaj kev hloov pauv kub thaum lub sijhawm ua haujlwm, thiab qhov tshwm sim thermal shock ua rau muaj kev sib tw zoo rau cov khoom siv refractory. Ua tsaug rau qhov tsis tshua muaj kev nthuav dav thiab zoo thermal conductivity ntawm graphite, nws tuaj yeem txo cov thermal kev ntxhov siab los ntawm kev hloov pauv kub sai, ua rau magnesium carbon bricks kom muaj kev ncaj ncees nyob rau hauv ib puag ncig thermal shock thiab tsis yooj yim los ntawm cov teeb meem xws li spalling thiab cracking.
Magnesium carbon bricks kuj muaj thermal conductivity zoo. Cov yam ntxwv no tso cai rau cov cib hloov cov cua sov sai thiab sib npaug hauv qhov chaw siab - qhov kub thiab txias, zam qhov tshwm sim ntawm cov cua sov hauv zos. Nws pab txhim kho cov thermal efficiency ntawm cov cuab yeej xws li rauv taws thiab txo kev siv hluav taws xob.
Hauv daim ntawv thov, magnesium carbon bricks tiag tiag qhia lawv lub peev xwm thiab ua lub luag haujlwm tseem ceeb thiab tseem ceeb. Hauv kev lag luam hlau thiab hlau smelting, magnesium carbon cib tuaj yeem pom txhua qhov chaw.
Thaum lub steelmaking oxidation converter nyob rau hauv lub lag luam, lub sab hauv kub soars mus rau ib ncig ntawm 1700 degree. Lub molten hlau nyob rau hauv lub converter yuav churning, thiab muaj ib tug hnyav cov tshuaj tiv thaiv ntawm lub cub tawg slag thiab lub cub tawg nyob rau hauv lub dual los ntawm cov neeg kho tshuab scouring quab yuam thiab tshuaj erosion quab yuam. Raws li cov khoom siv hluav taws xob, magnesium carbon bricks, nrog rau lawv zoo heev - kub tsis kam, slag yaig tsis kam thiab thermal shock stability, ruaj khov tiv taus qhov hnyav ib puag ncig, ua kom lub zog ruaj khov ntawm lub converter thiab pab txhim kho steelmaking efficiency thiab purity ntawm cov hlau molten. Ntawm lub qhov tapping, qhov siab - kub molten steel jets tawm ntawm ib tug ceev ceev, nrog ib tug txaus tus nqi ntawm ob peb meters ib ob. Lub zog scouring quab yuam thiab qhov kub siab tshaj li 1600℃- 1700℃ua rau muaj kev sim siab heev ntawm cov ntaub ntawv. Magnesium carbon bricks sawv ruaj khov ntawm no los xyuas kom meej tapping du thiab zam kev puas tsuaj ntxov ntawm lub qhov tapping.
Nyob rau ntawm qhov chaw kub kub ntawm lub qhov cub phab ntsa ntawm lub siab - fais fab cub hluav taws xob, qhov tam sim no dhau los ntawm cov electrodes ua rau kub siab, thiab lub zos kub siab tshaj 1800 degree, nrog rau cov thermal stress. Lub siab thermal conductivity ntawm magnesium carbon bricks sai ua cua sov, thiab lawv zoo thermal shock stability resists drastic kub hloov, tiv thaiv lub cub tawg phab ntsa los ntawm deforming thiab tawg vim overheating, thiab zoo heev ncua lub neej kev pab cuam ntawm lub cub hluav taws xob. Nyob rau sab nraud refining rauv, lub molten steel undergoes ntxiv purification thiab muaj pes tsawg leeg hloov ntawm qhov kub thiab txias. Lub acidity thiab alkalinity ntawm refining slag yog complex, thiab nruj yuav tsum tau ua nyob rau hauv lub purity, slag kuj thiab thermal shock stability ntawm cov ntaub ntawv refractory. Magnesium carbon bricks, nrog rau lawv cov kev ua tau zoo heev, escort cov txheej txheem refining.
Ntxiv nrog rau kev lag luam hlau thiab hlau smelting, magnesium carbon cib kuj muaj ntau yam kev siv hauv lwm qhov chaw ua haujlwm siab - kub. Hauv kev lag luam iav, hauv cov iav kiln, qhov kub siab - iav kua ntawm 1500℃- 1600℃ntws zoo li viscous magma, thiab lub cub tawg muaj ntau yam corrosive gases. Magnesium carbon bricks tau muab tso rau hauv qab thiab cov phab ntsa ntawm cov iav kiln, tiv thaiv kev yaig thiab yaig ntawm cov kua iav thiab thaiv kev nkag mus ntawm lub cub tawg kom ntseeg tau tias kev ua haujlwm ruaj khov ntawm cov kiln thiab nteg lub hauv paus ruaj khov rau kev tsim cov khoom zoo - zoo thiab siab - pob tshab iav khoom.
Hauv kev lag luam tsim cov cement, hauv cov cement kiln, cov ntaub ntawv raug hloov pauv ntawm lub cev thiab tshuaj lom neeg ntawm qhov kub ntawm 1400℃- 1600℃los tsim cov cement clinker. Nyob rau hauv lub kiln, tsis yog tsuas yog cov tshuaj yaig ntawm alkaline cov ntaub ntawv tab sis kuj cov neeg kho tshuab hnav los ntawm churning ntawm cov ntaub ntawv. Raws li cov hauv ob sab hauv ntawm cov cement kiln, magnesium carbon bricks tuaj yeem tiv taus qhov hnyav ua haujlwm, txo cov kev tu ntau zaus ntawm cov cement kiln, txhim kho kev tsim khoom thiab txo kev siv zog.
Hauv kev lag luam uas tsis yog -ferrous hlau smelting, coj tooj liab smelting ua piv txwv, nyob rau hauv lub reverberatory rauv, tooj liab concentrate yog smelted ntawm ib tug kub ntawm 1200℃- 1300 degree, thiab lub cub tawg slag yog heev corrosive. Raws li cov khoom siv hauv cov khoom siv hauv tsev, magnesium carbon bricks muab tag nrho cov kev ua si rau lawv qhov zoo ntawm siab - kub tsis kam thiab yaig tsis kam los xyuas kom meej cov txheej txheem tooj liab smelting thiab txhim kho cov hlau rov qab. Nyob rau hauv lub cell electrolytic rau txhuas smelting, txawm tias qhov kub thiab txias ua hauj lwm yog tsawg, qhov yaig ntawm lub zog tam sim no thiab siab - kub electrolyte nyob rau hauv lub cell yog tseem hnyav. Magnesium- carbon bricks muab kev txhawb nqa txhim khu kev qha rau cov txheej txheem txhuas electrolysis ruaj khov.
Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis thiab kev txhim kho txuas ntxiv ntawm kev lag luam, cov kev xav tau rau kev ua haujlwm ntawm magnesium carbon cib tau nce zuj zus. Ntawm qhov tod tes, txhawm rau ua kom tau raws li qhov kub thiab txias qhov chaw ib puag ncig thiab kev ua haujlwm nyuaj, cov kws tshawb fawb tau mob siab rau tsim cov khoom tshiab ntawm magnesium- cov khoom siv roj carbon cib. Piv txwv li, los ntawm kev ua kom zoo ntawm cov khoom siv raw cov mis thiab siv magnesium xuab zeb ntawm purity siab dua thiab siab - zoo graphite, kev ua tau zoo ntawm magnesium carbon cib tuaj yeem txhim kho ntxiv. Nyob rau tib lub sijhawm, hom tshiab ntawm cov khoom ntxiv thiab cov txheej txheem tsim khoom tau raug kawm los txhim kho kev tiv thaiv kev tiv thaiv - oxidation kev ua haujlwm, slag tsis kam, thiab thermal shock stability ntawm magnesium carbon bricks, ntawm lwm yam khoom.
Ntawm qhov tod tes, nrog kev txhim kho txuas ntxiv ntawm kev paub txog ib puag ncig, kev lag luam magnesium carbon cib tau nquag teb rau kev hu rau kev txhim kho ntsuab. Thaum lub sij hawm tsim khoom, qhov tseem ceeb yog muab tso rau hauv kev txuag hluav taws xob thiab txo qis emission. Ib puag ncig tus phooj ywg cov cuab yeej tsim khoom thiab cov txheej txheem tau txais yuav los txo cov pa phem ib puag ncig. Lub caij no, kev rov ua dua tshiab thiab rov siv cov khib nyiab magnesium- carbon cib tau ntxiv dag zog. Los ntawm cov thev naus laus zis kho tau zoo, cov khib nyiab magnesium carbon cib tau hloov mus rau hauv cov peev txheej rov siv tau, ua tiav kev siv cov peev txheej, txo cov nqi tsim khoom, thiab txhawb kev txhim kho kom ruaj khov.
