Ferrosilicon (Fesi) Ua si lub luag haujlwm tseem ceeb hauv cov txheej txheem steelmaking niaj hnub vim nws cov haujlwm dual ...-deoxidizerThiabAlloying Tus Neeg Sawv CevCov. Hauv qab no yog cov ncauj lus kom ntxaws txog nws thaj chaw ntawm daim ntawv thov:
1. Deoxidation
Lub hom phiaj: Tshem tawm ntawm cov pa oxygen (O₂) los ntawm Molten Steel los tiv thaiv tsis meej xws li porosity thiab suav nrog.
Lub tshuab: Silicon reacts nrog oxygen los ua silica (sitio₂), uas ntab rau hauv slag:
Si + O2 → Sio2 (Exothermic Cov Tshuaj Tiv Thaiv).
Qhov Zoo Tshaj Aluminium:
NtawvKua kua, txhim kho kev nyiam huv ntawm cov hlau.
Tsawg lub caij nyoog ntawm nozzle clogging thaum nrib pleb.
Cov tshuaj raug: 3-5 kg fesi ib tuj ntawm cov hlau (kho tau nyob ntawm cov qib steel).
2. Sib ntxaws
Silicon ua ib qho kev faib tawm:
Txhim Kho Cov Khoom:
Lub zog thiab hardness: Silicon nce tensile zog (piv txwv li cov qauv hlau).
Sib nqus permeability: Tseem ceeb rauCov Hluav Taws Xob Hluav Taws Xob(3-5% SI) siv hauv kev hloov pauv thiab lub cev muaj zog.
Corrosion Kuj: Stainless hlau tau txais txiaj ntsig los ntawm silicon tiv thaiv oxidation.
Hom Phiaj Qauv Hlau:
Silicon Hlau (piv txwv li M15): Muaj 2.5-4.5% SI rau cov ntawv thov hluav taws xob.
Caij nplooj ntoos hlav hlau (piv txwv li 55si7): 1.5-2.5% SI txhim kho elasticity thiab qaug zog muaj zog.
3. Kev Hloov Kho Txog Slag
Kua ua kua:
Sio₂ los ntawm ferrosilicon reacts nrog lub ntsiab ntawm lub slag (piv txwv li ntawm daim calcium silicates (Casio₃), txo lub viscosity ntawm slag.
Yam uas pab: Kev tshem tawm tau zoo ntawm kev tsis txaus ntseeg (s, p) thiab tsis yog xim hlau suav nrog.
4. Tus nqi ua tau zoo Silicon Additive
Kom zoo dua silicon ntshiab:
Qhov qis melting point (1200-1400℃tiv tiag 1414℃rau cov ntshiab si sil) kom ntseeg tau sai dua los ua Molten hlau.
Cov kab hlau hlau ua raws li tus cab kuj, txo kev siv hluav taws xob.
5. Ferrosilicon cov qib tau siv hauv steelmaking
Cov Ntsiab Lus Si Main App
Fesi7572-80% Kev Purity Siab Deoxidation, Alloy Steels
Fesi6565-72% dav dav deoxidation, tus nqi qis
Fesi4540-47% Foundry, Basix Steels
6. Txheej txheem sib xyaw ua ke
Cov pa rauv (bof):
Ntxiv thaum sau rau deoxidize thiab tswj silicon cov ntsiab lus.
Fais arc rauv (EAF):
Siv thaum cov theem ua kom muaj kuab rau kev tswj kom meej ntawm kev muaj pes tsawg leeg.
Tshu metallurgy:
Cov theem silicon los ntawm kev qhia txog Fesi Hmoov.
7. Kev cuam tshuam thiab ib puag ncig kev cuam tshuam
Nqi txuag:
Txo kev vam khom rau cov deox-based deoxidizers.
Ib puag ncig ua phooj ywg:
Txo cov qauv looj pa roj carbon ntau dua piv rau txhuas (Fesi Ntau Lawm Emits ~ 8-10-10 hom tixes / t piv rau ~ 15 tCO₂ / T rau txhuas).
Cov lus qhia luv luv ntawm cov txiaj ntsig tseem ceeb
Cov txiaj ntsig zoo
DeoxidationCov hlau nqus tsev ntxhua khaub ncaws hlau, tsawg dua qhov tsis xws luag
Sib ntxawsTxhim kho cov kws khomob thiab cov khoom siv hluav taws xob
Kev tswj cov ntsej muagTshem tawm siv tau ntawm impurities
Kev lag luam efficiencyTxo lub zog thiab cov khoom siv piv rau lwm txoj