Dab tsi yog qhov ua kom sov npaum li cas hauv eF?

Lub Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob (EAF) yog lub tswv yim tseem ceeb uas txiav txim siab nws cov kev ua tau zoo, kev ua tau zoo, thiab ib puag ncig cuam tshuam:Thaum tshav kub kub sib npaug.

Yog tias koj yog tus thawj tswj hwm, lossis nkag siab cov txiaj ntsig ntawm cov phiaj xwm kev ua kom sov, thiab sib qhia ua kom muaj zog ntawm kev ua kom muaj zog los ua kom koj lub zog ua kom zoo nkauj

Cov hluav taws xob tshav kub yog hais txog qhov sib npaug ntawm cov kev siv hluav taws xob thiab kev siv hluav taws xob yooj yim nqi, kev hnav electrode, thiab muaj kev puas tsuaj ntxiv .

Qhov Kev Sib Tw Kub Sib Tw

Ntawm nws cov tub ntxhais, tshav kub ua raws li thawj txoj cai ntawm thermodynamics:Lub zog tsis tuaj yeem tsim lossis rhuav tshem-tsuas hloov pauv{{0 {}}} Rau ib eaf, qhov no txhais tau tias:

Tag nrho cov tswv yim lub zog =}} tag nrho cov khoom siv hluav taws xob + poob

1. Lub Zog Hluav Taws Xob (60-75% ntawm tag nrho cov tswv yim)

Lub zog tseem ceeb hauv EAF los ntawm lub tshuab hluav taws xob tsim ntawm Graphite electrodes thiab cov kab hlau . cov khoom niaj hnubEAF Steel Uanoj 350-400 toj ib tev ntawm cov hlau ua kua, nyob ntawm seem zoo thiab kev ua haujlwm khiav haujlwm.

Qhov tseeb kev lom zem: qhov kub ntawm lub tshuab hluav taws xob muaj ntau dua 3,500℃-hotter tshaj li saum npoo ntawm lub hnub!

2. Tshuaj Zog Hluav Taws Xob (15-30%)

Kev siv tshuaj rau lwm yam tshuaj lom neeg cov kev coj noj ua los pab cov cua sov tseem ceeb:

Cov pa roj oxidation: Txhaj tshuaj oxygen lossis carbon ua kom sov los ntawm kev tawm tsam zoo li:

C + O2 → CO 2+ Thaum tshav kub kub (393.5 KJ3.5 KJ3.5 KJ3.5 KJ / Mol) C + O2 + Cua Sov (393.5 KJ3.5 KJ / Mol / Mol / Mol / Mol / Mol / Mol / Mol / Mol / Mol

Tom qab-sib txuas: Hlawv cov roj roj hauv cov cua sov hluav taws xob rov qab siv zog dua li .

3. Lub cev (5-10%)

Preheated seem: SCRAP rhuab mus rau 500-600℃los ntawm kev nkim roj rov qab siv hluav taws xob tau {}}

Kub Hlau (Drri / HBI): Direct txo cov hlau (DRI) lossis kub) them rau cov hlau kub siab (HBI)

1. TSWV YIM SIV LUB ZOG (60-70%)

Qhov no yog lub zog nqus los ntawm cov txheej txheem steelmaking:

Cua sov thiab melting seem(1,200-1,600 degree)

Superheating Molten Steel

Kev Tsim Kom Yooj Yim(endothermic kev phiv tshuaj)

2. Lub zog poob (30-40%)

Notpiciencies tshwm sim los ntawm:

Cov roj poob qis (15-25%): Cov roj kub kub tawm ntawm cov cub tawg ua cua sov .} afs niaj hnub hoods lossis khib nyiab kub boilers {}}

Txias dej poob (5-10%): Dej txias tshuab rau Panels, vov tsev, thiab hluav taws xob tsis txaus ua cua sov {}}

Hluav taws xob thiab convection (5-8%): Tshav kub escapes los ntawm cov cua sov phab ntsa thiab qhib .

Electrode kev poob (2-4%): Lub zog ploj raws li cov hluav taws xob oxidize lossis tawg .

1. Nqi txuag

Txhua li 1% txhim kho hauv kev sib tw kub ua kom txuag tau50, {000} - - 50,000}}}000 txhua xyoorau ib nrab-EAF tsim 500,000} tons / xyoo .

2. Muaj zog

Optimized Thaum tshav kub kub tshuav txo cov tshuaj pleev ib ce?

3. Kev ua kom sov rog

Kev kub ntau dhau los txo cov tshuab cua txias thiab cov ua rau tsis tau npaj tsis tau .

1. Seem preheated

Preheating seem rau 600℃siv tawm-roj cua sov tuaj yeem ua rau cov hluav taws xob siv hluav taws xob20–30%. tusConsteel ® EAFSystem yog qhov ua piv txwv, ua tiav 310 kWwh efficient .

Kev Kawm Txog: Turkish steel lis lub zog siv los ntawm 410 mus rau 340 kWh / tuj tom qab nruab Preheater (source:Hlau & Hlau Tshuab, 2021).

2. Oxygen Thiab Carbon Txhaj

Kev Txhaj Tshuaj Ntse Hnav Zog Hluav Taws Xob:

Cov pa pa ..ua kom nrawm scrap melr thiab txhawb cov co ncej-sib txuas .

Cov pa roj carbon foamingtsim cov insulating swb txheej, txo cov cua sov radiant .

3. Tawm-roj cua sov rov qab

Tshuab zoo liLajco ™ntes cov khib nyiab roj ntawm 1,200℃los tsim cov roj lossis preheat scrap, txhim kho kev ua tau zoo los ntawm 10-15%.

4. Dynamic Txheej Txheem Tswj

Ai-powered system kho voltage, electrode txoj hauj lwm voltage, thiab oxygen Flow nyob rau hauv lub sij hawm tiag tiag.} Piv txwv li,Danieli's Q-yajua kom zoo tshaj met cov nqi thaum tsis tshua muaj zog siv .

5. Refractory Ua Kom Zoo

Cov ntaub ntawv siab heev liMGO-C Cibwithstand ntau zaus kub, txo cov cua txias xav tau .

1. Tsawg-zoo scrap

Cov khoom tsis huv (e {{{{0} g}, tooj liab,Steinert xss tPab txo qhov no .

2. Txuas Ntxiv Hluav Taws Xob

Siv cov cua sib txawv ntawm cov cua / hnub ci yuav tsum muaj EAF cov haujlwm EQhov kev daws teeb meem zoo liDC arc rauv (e.g., SMS GROUPSE QUAURAT EAF) Txawb tawm arc tus cwj pwm thaum lub sij hawm voltage hloov pauv .

3. Hydrogen-based steelmaking

Cov EAF yav tom ntej tuaj yeem siv hydrogen raws li lub reductant . cov qauv tshuaj yuav txhaj tshuaj pleev hydroge yuav tsum hloov kho nws cov nplaim hluav taws xob nrawm thiab qis dua.

Mastering tshav kub tsis muaj tsuas yog hais txog kev sib luag - nws yog hais txogMaximizing Roithaum nce mus rau ntsuab steel . los ntawm cov thev naus laus zis xws li, thiab khib nyiab kom ua tiav:

• Lub zog txuag: 15-25% qis dua kWh / tuj
• Txo Nqi Them: 10-10-20 / tuj hauv cov nqi ua haujlwm
• Kev ua raws ib puag ncig: ntsib cov phiaj se thiab cov hom phiaj Esg

NtawmXi'an huacang, peb tshwj xeeb hauv EAF thiab LF / VD / VOD / VOD / VOD / VOD / VOD / VOD / VODPrecision Rhaub Kev Tswj Kub{{0. Los ntawm kev nce qib nkev rov qab rau kev ua tiav automation, peb cov kev daws teeb meem tau ua rau koj cov hom phiaj tag nrho {}}

Npaj txhij los ua kom zoo rau koj cov cub hluav taws xob qhov sib npaug?Tiv tauj peb!

Lub Koom Haum Ntiaj Teb Hlau .} (2023) .Hlau steel muaj tswv yim xyoo 2023.

Ghoosh, {{.}, & Chlatterjee, {{1} {{3} {3}Ironmaking thiab steelmaking: txoj kev xav thiab kev coj ua{{0 {}} phi kev kawm .

Jones, j {. .}}}} {} (2020) {5} {5}Fais arc rauve steelmaking. Aist .

Hlau & Hlau Tshuab. (2021) . "}}" Kev tshawb xyuas preheating: kev kawm txog cov ntaub ntawv los ntawm Tebchaws Europe thiab Asia} "

Xi'an Huachan Metallurgical Technology Co ., ltd .

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