① Dab tsi yog qhov khiav castable thiab yog vim li cas nws tseem ceeb heev nyob rau hauv blast furnace slag aav?
Khiav castables yog siab -kev ua tau zoo refractory linings siv nyob rau hauv blast furnace tapping channel, qhov twg molten hlau thiab slag ntws tsis tu ncua nyob rau hauv huab cua kub thiab tshuaj lom neeg kev nyuaj siab. Hauv Kaus Lim Kauslim cov haujlwm tshwj xeeb steel-tshwj xeeb tshaj yog nyob rau hauv POSCO-txoj kev sib raug zoo- khiav kev ua haujlwm ncaj qha txiav txim siab tapping stability thiab lub cub tawg efficiency.
Hauv cov kab ke no, cov neeg khiav dej num tsis yog cov channel passive. Nws yog ib qho dynamic hnav tsam raug rausiab - nrawm slag ntws, tshuaj lom neeg corrosion, thiab rov ua dua thermal cycling. Thaum siab - qhov kub thiab txias slag cuam tshuam nrog lub castable nto, nws pib ua cov txheej txheem degradation uas txhais tau tias lub neej kev pab cuam ntawm lub hauv ob sab phlu.
Niaj hnub nimno formulations feem ntau suav nrog advanced additives xws liFeSiN additive rau hlauthiabmetallurgical FeSiNtxhawm rau txhim kho slag tsis kam thiab txuas ntxiv kev ua haujlwm ruaj khov.
② Yuav ua li cas slag yaig txo cov kev pab cuam lub neej ntawm khiav castables nyob rau hauv Kauslim blast furnace systems?
Slag yaig yog ib qho tseem ceeb tsis ua hauj lwm mechanisms nyob rau hauv khiav castables siv nyob rau hauv Kauslim tshwj xeeb steel blast furnace ua hauj lwm. Kev sib cuam tshuam ntawm molten slag thiab refractory nto ua rau ob qho tib sichemical dissolution thiab mechanical hnav, uas maj mam txo cov hauv ob sab phlu thickness thiab structural kev ncaj ncees.
Ntawm qhov kub thiab txias ua haujlwm, slag nkag mus rau hauv qhov ntxeem tau ntawm cov castable, dissolving bonding theem xws li calcium aluminates thiab tsis muaj zog ntawm cov qauv sab hauv. Thaum nkag mus pib, tus nqi yaig nrawm dua vim tias cov cheeb tsam tsis muaj zog muaj kev cuam tshuam ntau dua rau cov kua dej shear los ntawm cov slag tsis tu ncua.
Hauv POSCO- hom tapping tshuab tsis tu ncua, cov txheej txheem no yuav hnyav dua vim yog lub sijhawm tapping ntev thiab cov ntim slag siab. Raws li kev yaig nce zuj zus, qhov khiav saum npoo yuav tsis sib luag, ua rau muaj kev kub ntxhov hauv cov dej ntws tawm, uas ntxiv dag zog rau hauv cheeb tsam hnav.
Cov tshuaj tiv thaiv kab mob no ua rau luv luv lub neej kev pab cuam ntawm cov tshuab khiav tshwj tsis yog cov khoom siv ntxiv nrog siab - cov khoom ruaj khov xws liQib refractory FeSiNlos yogSi-Fe-N alloycov qauv.
③ Technical Parameters ntawm FeSiN siv nyob rau hauv khiav castable systems
| Yam khoom | Specification |
|---|---|
| Khoom npe | Ferrosilicon Nitride (FeSiN) |
| Qib Kawm | Refractory qib FeSiN |
| Nitrogen ntsiab lus | 20% - 30% (tswj stability) |
| Si Content | 45% – 75% |
| Phase Structure | Si₃N₄ + Si-Fe matrix |
| Hom Particle | granular FeSiN khoom / hmoov |
| Qhov Loj | 0-1 hli / 1-3 hli / 3-10 hli |
| Qhov ntom | 2.4-3.1g / cm³ |
| Hom Kev Ua Haujlwm | Slag kuj / thermal shock reinforcement |
| Kev Lag Luam Role | taphole av nplaum additive FeSiN / runner system additive |
④ Yuav ua li cas yog slag yaig tus cwj pwm tswj nyob rau hauv khiav castable daim ntaub ntawv?
Nyob rau hauv niaj hnub blast furnace engineering, tswj slag yaig tsis yog ua tiav los ntawm kev tiv thaiv saum npoo ib leeg tab sis los ntawm kev hloov kho lub microstructure sab hauv ntawm lub refractory.
Hauv Korean steel nroj tsuag,FeSiN chaw tsim tshuaj paus - cov ntaub ntawv qibtau nce siv los qhia cov theem tswj nitridation hauv cov castable matrix. Thaum lub sij hawm ua haujlwm siab - kub, FeSiN reacts los tsim cov Si₃N₄ network ruaj khov, uas ua raws li cov txheej txheem txhawb nqa pob txha.
Qhov kev txhawb nqa no txo qis slag nkag mus tob thiab ua rau cov tshuaj lom neeg tawg ntawm cov qib sib txuas. Raws li qhov tshwm sim, cov castable tuav ntau dua ntom ntom thiab cov qauv kev ruaj ntseg txawm tias nyob rau hauv kev cuam tshuam tsis tu ncua slag.
Nyob rau hauv advanced formulations muab los ntawm aferrosilicon nitride tus neeg muag khoom, FeSiN kuj txhim kho thermal poob siab, tiv thaiv microcrack propagation tshwm sim los ntawm rov tapping cycles.
Hauv POSCO-cov kab ke ntsig txog, qhov no yog qhov tseem ceeb tshwj xeeb vim tias cov tshuab khiav khiav ua haujlwm nyob rau hauv lub sijhawm ntev tapping uas txawm tias me me kev txhim kho hauv kev tiv thaiv kev yaig txhais ua qhov tseem ceeb ntawm kev txhawb nqa lub neej.
⑤ FeSiN qib sib piv hauv cov ntawv thov kev sib tw khiav
FeSiN Qib A vs Standard Industrial FeSiN
Qib A muab kev tswj hwm kev ruaj ntseg ntawm nitrogen, ua rau nws tsim nyog rau siab -kawg khiav tshuab qhov twg slag yaig kuj yuav tsum nyob twj ywm nyob rau hauv batch. Cov txheej txheem kev lag luam FeSiN tuaj yeem nthuav dav ntau qhov sib txawv, ua rau Si₃N₄ tsim tsis sib xws thiab kev coj cwj pwm tsis zoo.
FeSiN hmoov vs Granular FeSiN Khoom
FeSiN hmoov khoom muagcov khoom siv feem ntau yog siv rau hauv cov txheej txheem zoo castable rau kev sib cais tsis sib xws, thaumgranular FeSiN khoomyog nyiam nyob rau hauv siab -load runner zones yuav tsum maj mam cov tshuaj tiv thaiv thiab txhawb nqa ntxiv thaum lub sijhawm ua haujlwm.
Metallurgical FeSiN vs Silicon Nitride Ferro Alloy
Metallurgical FeSiN muaj ntau dua reactivity thiab sai nitridation, whereas silicon nitride ferro alloy systems muab ntau ruaj khov tab sis qeeb zog theem. Kev xaiv nyob ntawm qhov cub ua haujlwm profile thiab slag aggressiveness.
⑥ Yuav ua li cas yog FeSiN xa mus rau kev lag luam refractory daim ntaub ntawv?
FeSiN siv nyob rau hauv khiav castable systems yog muab nyob rau hauv ob qho tib si hmoov thiab granular cov ntaub ntawv nyob ntawm seb yuav tsum tau daim ntawv thov.
Cov ntim khoom ib txwm suav nrog 1 MT jumbo hnab nrog cov dej noo- tiv thaiv cov kab kom tiv thaiv oxidation thiab nitrogen poob thaum khaws cia thiab thauj. Rau cov ntawv thov precision, lub tshuab nqus tsev - kaw lossis ob npaug - txheej ntim yog muaj.
Logistics yog optimized rau steel cog khoom chains, nrog containerized shipping kom ruaj khov xa mus rau Korean blast furnace tswv. Raws li ib tugFeSiN chaw tsim tshuaj pausthiab thoob ntiaj tebferrosilicon nitride tus neeg muag khoom, qhov sib xws ntawm qhov loj me thiab nitrogen stability yog khaws cia thoob plaws hauv cov khoom siv.
⑦ FAQ: Ua li cas slag yaig cuam tshuam rau khiav castable kev ua tau zoo thiab FeSiN efficiency?
Lub slag yaig cuam tshuam li cas rau kev khiav haujlwm castable lub neej?
Slag yaig maj mam dissolves cov qib sib txuas thiab tshem tawm cov khoom nto, txo cov thickness thiab cov qauv kev ntseeg siab kom txog thaum tsis ua haujlwm.
Vim li cas slag kuj tseem ceeb hauv Kaus Lim Kauslim qhov cub ua haujlwm?
Vim tias POSCO-txog cov tshuab ua haujlwm tsis tu ncua siab- ntim tapping cycles qhov twg lub sijhawm poob qis heev thiab tsis ua haujlwm liner cuam tshuam ncaj qha rau kev tsim khoom.
FeSiN puas tuaj yeem txo cov tshuaj corrosion los ntawm molten slag?
Yog lawm. FeSiN txhawb nqa Si₃N₄ tsim, uas txhim kho cov tshuaj lom neeg ruaj khov thiab txo cov slag- kev sib cuam tshuam ntawm kev sib tshuam.
Yuav ua li cas slag nkag mus puas refractory hauv ob sab phlu?
Kev nkag mus tsis muaj zog hauv kev sib txuas hauv kev sib txuas, tsim cov chaw ntxeem tau uas ua rau cov tshuaj lom neeg thiab cov tshuab yaig.
Vim li cas cov tshuab khiav yuav tsum tau yaig-cov tshuaj tiv thaiv ntxiv?
Vim hais tias slag ntws yog nruam thiab siab tshaj tawm, yuav tsum tau cov ntaub ntawv uas tswj cov txheej txheem kev ncaj ncees nyob rau hauv ob qho tib si thermal thiab mechanical stress.
FeSiN txhim kho kev tiv thaiv li cas rau molten slag nres?
Nws tsim cov theem ruaj khov nitride uas txhawb nqa microstructure thiab txo cov slag infiltration qhov tob.
Dab tsi cuam tshuam rau kev khiav castable lifespan hauv cov nroj tsuag steel?
Slag chemistry, ntws tshaj tawm, thermal cycling zaus, thiab refractory muaj pes tsawg leeg stability.
FeSiN puas tuaj yeem txhim kho kev ua haujlwm ntawm refractory nyob rau hauv slag txaus?
Yog lawm. FeSiN ruaj khov ua kom muaj cov theem tsim tau zoo ib yam, txhim kho lub sijhawm ntev -kev ua haujlwm tau zoo.
Rau kev sib tham txog kev sib tham, kev sib piv, lossis cov khoom siv ntau ntawm refractory -qib FeSiN rau cov tshuab khiav castable:
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