Dab tsi yog chav tsev hluav taws xob refractory?

Cov ntaub ntawv nyob hauv tsev yog cov ntaub ntawv tseem ceeb siv rau cov txheej txheem statmaking los tiv thaiv lub ladle cov yaig ntawm high-kub molten hlau thiab slag. Raws li lub thawv tseem ceeb rau tuav thiab thauj Molten Hlau (los ntawm Converter cov khoom siv tau ruaj khov, thaum cua sov hloov pauv thiab ua kom nruj ntawm cov nplais-steel interface. Hauv qab no yog cov khoom tseem ceeb, kev ua tau zoo thiab cov kev sib tw ntawm cov khoom lag luam refractory:

Dab tsi yog cov khoom siv hluav taws xob hauv tsev?

Cov ntaub ntawv nyob hauv chav tsev nyob ua ke feem ntau yog tsim los ntawm Ladle CLING thiab Ladle Refractory cov khoom lag luam. Nws cov ntaub ntawv refractory sab hauv yuav tsum tau ua kom cov mob hnyav xws li scouring, tshuaj yaig thiab thermal poob siab ntawm qhov siab-kub molten hlau.

Ladle ob sab hauv paus feem ntau muab faib ua cov ntu hauv qab no raws li cov chaw sib txawv hauv kev sib cuag nrog Molten Steel thiab ua haujlwm kom ua:

Mus tas li txheej (txheej kev nyab xeeb):

Khoom siv: Hnav Rwb thaiv tsev cib lossis qis dua thermal conductivity castables (xws li av nplaum).

Muaj nuj nqi: Kev ua hauj lwm thermal, txo qhov ntsuas kub ntawm lub plhaub ntaiv thiab txo cov cua sov.

Cov txheej txheem ua haujlwm (kev sib cuag nrog Molten Steel thiab Slag):

Seem kab cheeb tsam:

Cov Khoom Siv: Magnesia Carbon Cib Cib (Mgo-C, muaj 10% ~ 20% Graphite).

Nta: Lub siab tiv taus rau slag yaig (tshwj xeeb tshaj yog tawm tsam alkaline slag), graphite muab thermal poob siab thiab lubricity.

Phab ntsa thaj:

Cov khoom siv: Aluminium Magnesium Carbon Cib (al₂o₃-MGO-c) lossis siab Cakeable (al₂o₃≥ aluec%).
Nta: tshuav nyiaj tsis kam mus rau Molten Steel yaig thiab tus nqi, haum rau cov kab tsis yog thaj chaw.

Hauv qab thaj chaw:

Cov khoom siv: siab txhuas cib lossis corundum castable (al₂o₃≥90%).
Nta: muaj kev sib zog ua zog, tiv taus rau Molten Steel zoo li qub thiab cuam tshuam.

Cheebtsam:

Refractory swb rooj zaum:

Cov khoom siv: Aluminium zirconium carbon composite (al₂o₃-zro₂-c) lossis magnesium carbon (MGO-C).

Muaj nuj nqi: Tsim nyog tswj hwm cov ntws ntawm Molten hlau, thiab yuav tsum tau tiv thaiv kev kub siab hlav thiab thermal poob siab.

Purging Plug:

Cov khoom siv: Corundum-spinfel (al₂o₃-mgal₂o₄) lossis magnesium (MGO).

Muaj nuj nqi: Do cov hlau Molten los ntawm tshuab argon / nitrogen, kub thiab muaj pes tsawg leeg, siab permeability yog xav tau.

Cov block zoo:

Cov khoom siv: siab aluminium los yog magnesium carbon.

Muaj nuj nqi: kho lub rooj vag thiab withstand cov kev cuam tshuam ntawm kev sib txawv ntawm Molten Steel ntws.

Kev ua tau zoo yuav tsum muaj ntawm cov khoom siv tsis sib xws

• Yaig tawm tsam: Thaj chaw Slag thaj tsam ntawm lub ladle xav tau los tiv thaiv cov yaig ntawm high-bas-blue slag (cao / sidio₂> 2).
• Thermal poob siab kuj: Qhov kub flutres ntau thaum lub lig ntaiv (xws li txias txias ib chav tsev ntawm 1600 ° C rau hnub), thiab cov khoom yuav tsum tsis txhob tawg.
• Kev kub siab rau lub zog: withstand lub siab zoo li qub ntawm Molten hlau (xws li cov hlau hauv qab ntawm 200-tujad ladle ncav cuag ~ 0.3mpa) thiab tshuab poob siab.
• Tsawg cov pa phem: zam impurities nyob rau hauv refractory cov ntaub ntawv (xws li sio₂) los ntawm reacting nrog reacting nrog molten steel thiab cuam tshuam rau lub purity ntawm hlau.

Evolution thiab cov nyom ntawm cov khoom siv thev naus laus zis

Kev ua kom zoo ntawm Magnesia Carbon Cib

Tsoos Magnesia Carbon Cib: vam khom thermal poob siab kuj, tab sis yooj yim oxidized xws li al thiab si yuav tsum tau ntxiv).

Cov qauv hluav taws xob muaj roj carbon ntau: tsim cov roj carbon cov roj carbon ntau (xws li carbon dub) lossis hauv-situ generated carbonancy) kom txo qis oxidation kev pheej hmoo.

Kev tiv thaiv ib puag ncig thiab chromium-dawb

Cov teeb meem chromium cov pa phem: Tsoos Magnesia-Chrome Cib (Mgo-Crroo₃) raug txwv vim yog Carcinogenicity ntawm Cru.

Lwm txoj kev daws: Siv spinel (mgal₂o₄) lossis magnesium-calcium (MgGO-CAO) cov ntaub ntawv, uas yog ob qho kev tiv thaiv uas txaus ntshai thiab ib puag ncig.

Txuas ntxiv ntawm cov ntawv thov Castable

Kev Siv Tshuab Ua Ntej: Siv Alumina-magnesia lossis spinel castables los hloov cov khoom siv ua kom muaj zog, txo txoj kev sib koom ua ke thiab txuas ntxiv lub neej.

Kev siv tus kheej txoj kev siv: Kev siv sib cav yog tiav los ntawm cov particle loj, txo cov nqi zog.

Cov Qauv Uas Raug Raug Zoo Li Qub ntawm Cov Khoom Siv Nrov

Slag kab yaig: slag nkag ua rau qhov tsim ntawm cov theem qis (xws li Cao-sao-sao-sao₂ system) nyob rau saum npoo ntawm magnesia-carbon cib off.

Thermal Kev Nyuaj Siab Spalling: Feem ntau cov kev hloov kub tshaj plaws ua rau nthuav tawm microcacks sab hauv cov khoom siv, thiab thaum kawg cov fawm kib.

Blockage ntawm cov huab cua cib: suav nrog hauv Molten hlau (xws li al₂o₃) tau muab tso rau hauv lub qhov cua cua, cuam tshuam lub cev sib cav.

Daim ntawv thov ntawm chav tsev neeg refractory:

Huv si steel smelting: Siv high-purity corundum huab cua cua cib (al9₂₃> 99%) kom txo cov lus qhia ntawm impurities.

Lub neej ntev lub neej: Ua kom zoo nqi thiab lub neej los ntawm cov qauv gradient hauv thaj chaw thaj chaw thiab Aluminium Castables rau lub ladle phab ntsa).

Saib xyuas cov ntse: Siv Infrared Thermal Ntsuas Cov Kev Ntsuas lossis Acoustic Emission Technicals los saib xyuas cov kev yaig ntawm lub sijhawm ntawm lub sijhawm.

Cov ntaub ntawv nyob hauv chav tsev yog cov tub ntxhais muaj kev ua tau zoo, thiab lawv cov kev ua tau zoo cuam tshuam rau qhov zoo ntawm Molten hlau, kev nyab xeeb ntau thiab raug nqi. Piv nrog rau tundish Refractory cov ntaub ntawv, cov hnab ntim yuav tsum tau tiv thaiv ntev dua Molten hlau chaw nyob hauv lub sijhawm, ntau nyuaj slag-steel cov tshuaj tiv thaiv thiab cov khoom siv tshuab ntau dua. Cov lus qhia txog yav tom ntej muaj cov ntaub ntawv txhim kho qis thiab cov khoom siv ib puag ncig, kev tsim qauv thev naus laus zis ntev thiab muaj tswv yim. Piv txwv li, daim ntawv thov ntawm cov ntaub ntawv magnesium calcium thiab cov pa roj carbon ntau tsis tuaj yeem tsuas yog ua kom tau raws li kev tsim khoom ntsuab.