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Lub Melting Point Thiab Qhov Nthuav Ntawm FeSi70 (Piv Nrog FeSi75) yog dab tsi?

Dec 12, 2025

Tso lus

 

 

Dab tsi yog qhov Melting Point thiab ntom ntawm FeSi70 (Piv nrog FeSi75)?​

Lub cev muaj zog sib txawv vim muaj kev sib xyaw
FeSi70 thiab FeSi75 txawv hauvsilicon thiab hlau cov ntsiab lus, uas ua rau ntsuas qhov sib txawv hauvmelting pointthiabceev.
Khoom
FeSi 70
FeSi 75
Kev sib piv
Si cov ntsiab lus​
68-72% (nominal 70%)
72-78% (nominal 75%)
FeSi75 muaj Si ntau dua
Fe cov ntsiab lus​
~28–32 %
~22–28 %
FeSi70 muaj ntau Fe
Melting point​
~ 1230-1290 degree
~ 1200-1250 degree
FeSi70 melts ntawm ame ntsis siab duaQhov kub thiab txias vim cov ntsiab lus Fe ntau dua
Qhov ntom​
4.1–4.4 g/cm³
3.5-4.0 g / cm³
FeSi70 yogdenservim Fe feem ntau dua
Kev piav qhia:​
Siab duahlau cov ntsiab lusNyob rau hauv FeSi70 tsa ob qho tib si nws melting point thiab ceev txheeb ze rau FeSi75.
Lub melting ntau yog dav vim cov noalloy sib tov, tsis yog cov tshuaj dawb huv, thiab cov nqi tseeb sib txawv nrog cov khoom sib xyaw thiab cov txheej txheem ntau lawm.
Hauv kev tsim steel, ob qho tib si yaj tau yooj yim ntawm qhov kub thiab txias (~ 1550-1650 degree), tab sis FeSi70 yuav xav tau ntev me ntsis kom yaj tag nrho hauv qee kis.

 

Dab tsi yog Qhov Loj Particle Loj rau FeSi70 (Tshuaj, Granular) thiab Lawv cuam tshuam rau tus nqi Dissolution?​

Cov ntawv rau txawv Metallurgical txheej txheem thiab lawv cov tshuaj tiv thaiv ceev
FeSi70 tau muag hauv ntau yamqhov loj mekom haum rau ntau txoj kev sib ntxiv thiab tswj kev sib cais tus cwj pwm hauv cov yaj.
Daim ntawv
Hom Loj Loj
Yam ntxwv
Dissolution Rate
Cov ntawv thov siv
Lub pob​
10-80 hli
Cov khoom loj, cov hmoov av tsawg heev
qeeb
Rauv tapping, BOF / EAF qhov chaw nyob lub sij hawm tso cai ua tiav melting
Granular / Crushed​
3-10 hli
Nruab nrab loj, zoo li qub
Nruab nrab-ceev
Ladle ntxiv, kwj inoculation hauv foundries
Zoo Granular​
1-3 hli
Cov khoom me me, thaj chaw siab dua
Ceev ceev
Precise alloying nyob rau hauv ladle los yog tundish, automated dosing
Hmoov​
< 1 mm
Qhov chaw siab heev
Ceev heev (tab sis hmoov av phom sij)
Kev kho mob tshwj xeeb (xov hlau, kev txhaj tshuaj), kev siv tshuaj
Kev cuam tshuam ntawm Particle Loj ntawm Dissolution Rate
Cov khoom me meyaj sai dua vim thaj tsam ntau dua raug rau cov hlau molten.
Lub pobyaj maj mam; kev pheej hmoo ntawm melting tsis tiav yog tias ntxiv lig dhau lawm.
Granularmuaj kev sib haum xeeb ntawm kev sib cais ceev thiab yooj yim ntawm kev tuav.
Hmoovyuav tsum tau tuav tuav kom tsis txhob muaj plua plav thiab kev nyab xeeb.
Kev xaiv yam:​
Lub sijhawm txheej txheemmuaj rau kev sib cais (xws li, EAF tapping vs. ladle kho).
Plua plav tswjkev xav tau.
Automation qib(granules / briquettes nyiam rau kev noj zoo ib yam).

 

Dab tsi yog qhov Impurity Tolerance (xws li Al Tsawg dua lossis sib npaug li 2%, Ca Tsawg dua lossis sib npaug li 1%) hauv Industrial FeSi70?​

Hom impurity Qib hauv Cov Qib Kev Lag Luam thiab Lawv Qhov Tseem Ceeb
Muaj FeSi70 muajtaug impuritieslos ntawm raw cov ntaub ntawv thiab ntau lawm. Feem ntau guaranteed (tej zaum yuav txawv ntawm cov neeg tsim khoom thiab tus qauv) yog:
Lub ntsiab
Cov ntsiab lus raug (wt%)
Maximum Tso Cai (qib kev lag luam raug)
Qhov cuam tshuam rau Steel / Foundry
Sau ntawv
Aluminium (Al)​
0.5–2.0
Tsawg dua los yog sib npaug rau 2.0
tuaj yeem tsim nyuaj Al₂O₃ suav nrog; undesirable nyob rau hauv high-purity steels
Tsawg-Al FeSi70 muaj rau kev siv hlau huv
Calcium (Ca)​
0.1–0.5
Tsawg dua lossis sib npaug rau 1.0 (qee qhov tshwj xeeb nruj)
Hloov kho morphology rau ntau cov duab globular
Pab flotation ntawm silicates nyob rau hauv slag
Cov pa roj carbon (C)​
Tsawg dua lossis sib npaug li 0.1–0.2
Tsawg dua los yog sib npaug li 0.2
Cov nyhuv me me hauv feem ntau cov hlau; tuaj yeem cuam tshuam carburization hauv cam khwb cia hlau
Tswj los ntawm raw khoom cov ntsiab lus carbon
Phosphorus (P)​
Tsawg dua lossis sib npaug li 0.04–0.06
Tsawg dua los yog sib npaug li 0.05
Undesirable nyob rau hauv ntau yam qauv / alloy steels
Txwv los ntawm cov khoom siv
Sulfur (S)​
Tsawg dua lossis sib npaug li 0.02–0.04
Tsawg dua los yog sib npaug li 0.04
Teeb meem (kub luv luv); khaws cia qis
Tswj los ntawm kev xaiv raw khoom
Cov Qib Tshwj Xeeb:​
Tsawg-Al FeSi70: Al Tsawg dua los yog sib npaug li 0.5% rau hluav taws xob hlau, stainless hlau.
High-Purity FeSi70: Al Tsawg dua lossis sib npaug li 0.3%, S / P Tsawg dua lossis sib npaug li 0.01% rau cov ntawv thov tseem ceeb.
Standard Qib: Al ~ 1-2 %, txais tau rau cov pa roj carbon dav dav uas tswj kev suav nrog yog tswj hwm los ntawm kev xyaum slag.

 

Cov lus xaus

Lus nug
Cov ntaub ntawv tseem ceeb
Melting point & ntom ntawm FeSi70 (vs FeSi75)
MP: ~ 1230–1290℃(FeSi70) vs ~ 1200–1250℃(FeSi75); Qhov ceev: ~ 4.1–4.4 g / cm³ (FeSi70) vs ~ 3.5–4.0 g / cm³ (FeSi75)
Qhov loj me me rau FeSi70 & cuam tshuam kev tawg
Pob (10-80 mm, qeeb), Granular (3-10 mm, nruab nrab-ceev), Fine Granular (1-3 mm, ceev), hmoov (< 1 mm, very fast but dusty)
Impurity kam rau ua nyob rau hauv industrial FeSi70
Al Tsawg dua lossis sib npaug li 2%, Ca Tsawg dua lossis sib npaug li 1% (tus qauv), C Tsawg dua lossis sib npaug rau 0.2%, P Tsawg dua lossis sib npaug 0.05%, S Tsawg dua lossis sib npaug rau 0.04 % ( raug)
 

 

Ferrosilicon FAQ

Tuam Tshoj Metallurgy Daim ntawv thov Ferro Silicon / Ferrosilicon rau ntshiab Ferro Silicon 75% rau hlau thiab hlau kev lag luam ntawm tus nqi sib tw

Ferro Silicon 75
Ferro Silicon 72
Ferro Silicon 70
Ferro Silicon 75

Q: Kev siv ferrosilicon hauv steelmaking?
A: Deoxidation, alloying, kho steel muaj pes tsawg leeg.

 

Q: Lub luag haujlwm ntawm ferrosilicon li deoxidizer hauv steel?
A: Tshem tawm cov pa oxygen li SiO₂, tiv thaiv porosity, txhim kho steel zoo.

 

Q: Vim li cas ntxiv ferrosilicon rau cam khwb cia hlau?
A: Kho qib Si, txhim khu fluidity thiab inoculation nyhuv.

 

Q: Ferrosilicon nyob rau hauv zus tau tej cov nodular cam khwb cia hlau?
A: Ua raws li inoculant, txhawb nqa graphite spheroidization.

 

Q: Siv tsawg-silicon ferrosilicon (FeSi15) hauv vuam electrodes?
A: Muab alloying tsis dhau Si, stabilizes arc.

 

Q: Tshuaj muaj pes tsawg leeg ntawm ferrosilicon (Si, Fe, impurities)?
A: Si (15-90%), Fe tshuav nyiaj li cas, me me Al, Ca, C, P, S.

 

Q: Melting point thiab ntom ntawm ferrosilicon?
A: ~ 1200-1300 degree; Qhov ceev ~ 3.5-5.0 g / cm³ (qib nyob ntawm).

 

Q: Silicon cov ntsiab lus nyob rau hauv ntau qib ferrosilicon?
A: Feem ntau 15%, 45%, 65%, 75%, mus txog 90%.

 

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