① ferrosilicon nitride yog dab tsi thiab vim li cas nws thiaj li cuam tshuam rau cov av nplaum tshuab?
Ferrosilicon nitride (FeSiN) yog ibnitrogen- bearing metallurgical additivemuaj li ntawm hlau, silicon, thiab ruaj khov nitride theem (tsuas yog Si₃N₄). Nyob rau hauv niaj hnub blast furnace refractory engineering, nws yog dav faib ua ib tugrefractory khoom additivesiv los txhim kho cov qauv kev ncaj ncees nyob rau hauv huab cua thermal thiab mechanical ib puag ncig.
Hauv Is Nrias teb qhov kev ua haujlwm tas mus li tapping, qhov twg cov khoom siv hluav taws xob tau nce thiab tapping zaus ntau dua,taphole av nplaum cracking teeb meem (refractory cracking teeb meem)tau dhau los ntau zaus vim tsis ruaj khov thermal cycling thiab txhoj puab heev slag tej yam kev mob. FeSiN tau siv ntau zuj zus los txhim kho cov qauv kev sib txuas nrog cov av nplaum, txhim kho kev tiv thaiv kev tawg, yaig, thiab deformation.
② Vim li cas taphole av nplaum tawg tau tshwm sim hauv cov tshuab tapping txuas ntxiv thiab FeSiN pab li cas?
Hauv kev ua haujlwm tas mus li tapping, taphole av nplaum raug rov ua dua ntawm cov cua sov, txias, thiab siab - siab molten hlau ntws. Cov xwm txheej no feem ntau ua rautsis zoo thermal shock resistance (refractory thermal shock tsis ua hauj lwm)thiabunstable refractory bonding, uas yog thawj qhov ua rau tawg.
Cracking feem ntau pib thaum muaj kev ntxhov siab sab hauv tshaj qhov kev sib txuas ntawm cov av nplaum matrix. Thaum microcracks tsim, lawv propagate sai heev vim slag nkag thiab txhua yam shear los ntawm molten hlau ntws.
FeSiN pab txo qhov kev ua tsis tiav no los ntawm kev tsim cov qib nitride ruaj khov thaum lub sijhawm ua haujlwm. Cov theem no txhim kho cov txheej txheem cohesion thiab txo cov kev ntxhov siab concentration, hais ncaj qhalow taphole av nplaum durabilitythiabinconsistent refractory bondingteeb meem feem ntau pom nyob rau hauv Indian blast furnace systems.
③ Technical specification ntawm FeSiN rau refractory daim ntaub ntawv
| Parameter | Specification |
|---|---|
| Khoom | Ferrosilicon Nitride (FeSiN) |
| Nitrogen ntsiab lus | 20% - 30% (qib tswj / ruaj khov) |
| Ntsiab Theem | Si₃N₄ + Fe-Si matrix |
| Cov Khoom Muag Khoom | FeSiN hmoov / granular FeSiN |
| Particle Loj | 0-1 hli / 1-3 hli / 200 mesh hmoov |
| Qhov ntom | 2.4-3.2g / cm³ |
| Muaj nuj nqi | nitride bonding additive / refractory khoom additive |
| Purity Level | Tsawg impurity silicon nitride alloy |
| Ua kom pom tseeb ruaj khov | nitrogen theem / batch tswj |
④ Yuav ua li cas ferrosilicon nitride txo qhov tawg hauv taphole av nplaum tshuab?
Nyob rau hauv taphole av nplaum siv rau kev nruam tapping, cracking yog muaj zog txuas rau thermal stress accumululation thiab tsis muaj zog bonding lug. Thaum kub fluctuates sai, cov ntaub ntawv nrogtsis txaus kub lub zogtsis ua kom muaj kev ncaj ncees ntawm cov qauv, ua rau tawg pib.
FeSiN txhim kho kev ua tau zoo los ntawm kev tsim nyob rau hauv -situ Si₃N₄ cov tes hauj lwm uas ua raws li txuas txuas ntxiv hauv cov av nplaum matrix. Cov tes hauj lwm no txhawb kev tiv thaivthermal expansion mismatch, txo cov kev ntxhov siab sab hauv thaum tapping thiab ntsaws cov voj voog.
Tib lub sijhawm, FeSiN txo qhov cuam tshuam ntawmslag nkag teeb meemthiabslag nres ntawm refractories, uas yog cov tseem ceeb contributors rau tawg propagation. Los ntawm kev txwv slag infiltration, cov qauv sab hauv tseem denser thiab tsis tshua muaj kev ua haujlwm tsis ua haujlwm.
Hauv siab -load Indian blast furnace systems, qhov no ncaj qha txhais mus rau hauv txofast runner khoom hnavthiab txhim kho kev ua haujlwm ruaj khov hauv cheeb tsam taphole.
⑤ FeSiN qib sib piv rau taphole av nplaum kev ua tau zoo
Stable nitrogen FeSiN vs batch variation FeSiN
Stable nitrogen FeSiN muab kev sib txuas ua ke theem tsim, txobatch zoo variation (tsis sib haum FeSiN zoo). Hauv qhov sib piv, cov ntsiab lus tsis sib xws ntawm nitrogen ua rau cov txheej txheem tsis sib xws thiab muaj peev xwm tawg ntau dua.
FeSiN hmoov vs granular FeSiN
FeSiN hmoov (200 mesh)xyuas kom meej dispersion thiab ceev cov tshuaj tiv thaiv nyob rau hauv zoo av nplaum systems.Granular FeSiN hmoovyog nyiam nyob rau hauv siab -load daim ntawv thov uas maj mam cov tshuaj tiv thaiv txhim kho lub sij hawm ntev - cov qauv kev ruaj ntseg.
Siab -nitrogen FeSiN vs pa FeSiN
Siab -nitrogen FeSiN txhim kho kev sib raug zoo thiab txo qistsis ruaj tsis khov nitrogen cov ntsiab lus (tsis sib xws nitrogen theem)teeb meem, uas yog ib qho tseem ceeb nyob rau hauv tas li tapping ib puag ncig.
⑥ Yuav ua li cas yog FeSiN muab rau industrial taphole av nplaum daim ntaub ntawv?
FeSiN yog nkag rau hauv ob qho tib si hmoov thiab granular cov ntaub ntawv nyob ntawm seb lub refractory system tsim. Cov qib hmoov feem ntau yog siv rau hauv kev nplua -matrix taphole av nplaum formulations, thaum cov ntaub ntawv granular yog siv nyob rau hauv hnyav dua - lub luag hauj lwm rau lub cub tawg zones.
Kev ntim khoom yog ua tiav hauv cov dej noo- pov thawj 1-ton jumbo hnab nrog cov kab hauv qab kom tiv thaiv oxidation thiab tswj cov nitrogen stability thaum thauj thiab khaws cia. Qhov no ua kom muaj kev ua tau zoo ib yam txawm tias nyob rau hauv kev thauj mus los ntev.
Raws li ib tugFeSiN chaw tsim tshuaj pausthiabferrosilicon nitride tus neeg muag khoom, ZhenAn muab kev tswj hwm - cov ntaub ntawv qib tsim los rau siab -xav tau Indian blast furnace ib puag ncig qhov twgsiab refractory nqi siabxav tau kev pab lub neej ntev thiab txhim kho efficiency.
⑦ FAQ: Puas tuaj yeem ferrosilicon nitride txo cov av nplaum tawg hauv kev nruam tapping?
FeSiN pab txo qhov tawg hauv taphole av nplaum li cas?
Nws tsim Si₃N₄ kev sib txuas cov qauv uas ntxiv dag zog rau kev sib koom ua ke sab hauv thiab txo qis qhov pib tawg nyob rau hauv thermal stress.
Vim li cas tawg tsis kam yog qhov tseem ceeb hauv kev ua haujlwm tapping txuas ntxiv?
Vim tias kev tawg ua rau ua tsis tiav ntxov, tsis ruaj khov tapping kev ua tau zoo, thiab nce sijhawm poob.
FeSiN puas tuaj yeem txhim kho kev ruaj ntseg hauv cov av nplaum?
Yog lawm, nws txhim kho kev sib raug zoo ntawm kev sib raug zoo thiab txo qis kev sib cuam tshuam tsis muaj zog hauv lub refractory matrix.
FeSiN cuam tshuam li cas thermal expansion cwj pwm hauv refractories?
Nws stabilizes cov qauv sab hauv, txo kev ntxhov siab los ntawm thermal expansion mismatch.
Vim li cas cov tshuab tapping txuas ntxiv yuav tsum muaj cov ntaub ntawv muaj zog sib txuas?
Vim tias lawv ua haujlwm nyob rau hauv kev rov ua dua txhua yam thiab thermal load cycles uas ua rau cov av nplaum tsis muaj zog.
FeSiN ua li cas txhim kho kev tiv thaiv rau cov neeg kho tshuab kev nyuaj siab?
Nws txhawb microstructure, txo deformation nyob rau hauv molten hlau txaus siab.
FeSiN puas tuaj yeem txo qhov tsis ua haujlwm zaus hauv daim ntawv thov taphole?
Yog, los ntawm kev txhim kho thermal poob siab tsis kam thiab kev sib txuas ruaj khov.
FeSiN ua haujlwm li cas hauv kev txhim kho refractory toughness?
Nws txhim kho pob txha tiv thaiv los ntawm kev tsim nitride-raws li cov theem ntxiv.
Rau kev sab laj kev, kev txhawb nqa tshwj xeeb, lossis kev muab khoom ntau ntawm cov khoom siv hluav taws xob-qib FeSiN:
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