Kev siv cov nitrided ferrosilicon hauv cov ntaub ntawv refractory
Nitrided ferrosilicon (FeSi3N4 cov khoom siv, theem tseem ceeb - Si3N4 + FeSi) yog siv hauv cov khoom siv refractory: pob zeb sib tov, taphole masses thiab cov tshuab refractory.
Hauv kev sib xyaw ua ke, nws tau ntxiv rau hauv ob sab phlu ntawm cov troughs ntawm blast furnaces ntawm Al2O3-SiC-C system, nrog rau magnesium thiab high-alumina pob zeb.
Nyob rau hauv taphole tebchaw, nws txhim kho qhov kub thiab txias flexural zog (HMOR), erosion tsis kam rau slag thiab kua hlau, thiab txhim kho lub sealing peev xwm ntawm cam khwb cia hlau taphole.
Si3N4 theem yog oxidized thaum lub sij hawm ua hauj lwm los tsim ib tug tiv thaiv txheej ntawm SiO2, uas yog ib qho tseem ceeb ntawm nws tsis kam mus oxidation thiab slag corrosion.
1. Refractory pob zeb sib tov
Nitrided ferrosilicon feem ntau yog siv rau hauv cov pob zeb sib tov rau cov hlau foundries thiab steelmaking: nyob rau hauv pob zeb rau troughs ntawm blast furnaces ntawm Al2O3-SiC-C system, magnesium thiab high-alumina pob zeb. Cov additive tsub kom qhov kub thiab txias zog, matrix tsis kam rau oxidation thiab yaig, yog li nws yog dav siv nyob rau hauv cov ntaub ntawv hauv ob sab phlu, qhov chaw yog tas li nyob rau hauv kev sib cuag nrog ib tug khiav ntawm slag thiab molten hlau.
2. Tapping masses rau blast furnaces
Taphole - yog cov khoom siv refractory siv los kaw cov hlau cam khwb cia ntawm lub qhov cub tawg los ntawm cov hlau cam khwb cia thiab slag tuaj ua ke thaum tapping. Raws li lub sijhawm hloov kho lub tshuab hluav taws xob nce ntxiv thiab cov thev naus laus zis tshiab tau nthuav tawm, kev xav tau ntau ntxiv tau muab tso rau ntawm qhov kais qhov loj: nws yuav tsum tiv thaiv cov tshuaj lom neeg ua phem, yaig ntawm cam khwb cia hlau thiab slag, tiv taus qhov kub thiab txias, yooj yim clog, tswj qhov ntim stability thaum rhuab, yooj yim drilled thiab tiv thaiv lub cub tawg.
Hauv kev xyaum, kev siv tapping compounds nrog nitrided ferrosilicon ua kom ruaj khov ntawm cov hlau cam khwb cia yam tsis muaj qhov txawv txav, siab dabtsi yog khoov lub zog ntawm kev khiav hauj lwm kub thiab siab erosion kuj. Qhov no tso cai rau koj kom tswj tau qhov nruj thiab ntev ntawm cov cam khwb cia hlau kais qhov thaum lub sij hawm mus sij hawm ntev tappings. Cov ntsuas kev ua tau zoo tshwj xeeb yog nyob ntawm qhov sib xyaw ua ke, lub tshuab ua haujlwm ntawm lub tshuab hluav taws xob thiab cov khoom siv zoo, yog li lawv yuav tsum tau lees paub los ntawm kev ntsuas kev lag luam.
3. Composite refractories
Composite refractories yog tsim los ntawm ob lossis ntau hom refractory raw khoom nrog cov khoom sib txawv, ua ke los ntawm kev siv lub cev lossis tshuaj lom neeg los tsim cov yam ntxwv tshiab ntawm macro- lossis micro qib. Nitrided ferrosilicon yog siv nyob rau hauv ob qho tib si carbon-based thiab carbon-free composite systems, qhov twg nws oxidation stability thiab thermal zog ntxiv rau lwm theem.
4. Kev khiav hauj lwm hauv paus ntsiab lus ntawm nitrided ferrosilicon
Ib yam khoom siv FeSi_3N_4 muaj li 45–55% Si, 25–32% N, tus so - Fe (cov theem tseem ceeb yog - Si_3N_4 thiab FeSi; muaj pes tsawg leeg yog qhia hauv COA). Thaum lub sij hawm kev pab cuam, cov nitride nyiam oxidizes los tsim ib txheej tuab ntawm SiO_2 nyob rau saum npoo, uas tiv thaiv cov pa roj carbon thiab SiC theem ntawm oxidation ntxiv. Dispersed whiskers (whiskers) thiab Si_3N_4 hais kuj ntxiv dag zog rau matrix ntawm qhov kub thiab txias. Qhov kev sib xyaw ua ke no muab cov khoom siv nrog lub zog kub kub, tiv thaiv corrosion thiab tiv thaiv oxidation.
Cov lus nug nquag
B1. Dab tsi yog nitrided ferrosilicon?
Qhov no yog cov khoom siv ntawm Fe-Si-N system (nominally FeSi_3N_4), cov theem tseem ceeb ntawm Si_3N_4 thiab FeSi. Siv los ua antioxidant thiab ntxiv dag zog rau hauv cov refractories.
B2. Nyob rau hauv dab tsi fireproof systems yog nws siv?
Nyob rau hauv pob zeb ntawm troughs ntawm blast furnaces Al_2O_3-SiC-C, kais-qhov masses, magnesium thiab high-alumina concretes, raws li zoo raws li nyob rau hauv carbon-muaj composites.
B3. Vim li cas nws tiv thaiv oxidation?
Si_3N_4 theem yog oxidized los tsim cov txheej tiv thaiv ntom ntom ntawm SiO_2, uas tiv thaiv carbon thiab SiC los ntawm kev sib cuag nrog oxygen.
Q4. Yuav ua li cas cov hmoov yuav tsum?
Khaws rau hauv qhov chaw qhuav thiab tswj cov plua plav tsim thaum sib tov; Ua raws li daim ntawv qhia kev nyab xeeb ntawm tus neeg muag khoom (MSDS).
Tiv tauj peb
Koj puas xav tau cov khoom zoo nitrided ferrosilicon (FeSi_3N_4) rau kev tsim cov tapping compounds, refractory pob zeb lossis cov ntaub ntawv sib xyaw? Peb muab cov ntaub ntawv pov thawj zoo nrog qib siab ntawm nitriding thiab cov ntsiab lus tsis zoo.
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Hu rau peb tam sim no kom thov COA, tau txais ib qho kev tsocai, lossis npaj cov qauv kuaj dawb!