Ferrosilicon yog ib qho hlau alloy uas muaj hlau thiab silicon, ua cov khoom siv tseem ceeb hauv kev lag luam metallurgical.
I. Cov Khoom Tseem Ceeb
Nws zoo nkaus li greyish - cov pob dub nrog tus ntoo khaub lig du - ntu thiab nws yog xim hlau luster, qhia txog hardness thiab brittleness.
Nrog lub melting point ntawm kwv yees li 1300-1400 degree, nws muaj zog txo cov khoom thiab zoo heev alloying teebmeem.
Cov qhab nia feem ntau raug faib los ntawm cov ntsiab lus silicon, xws li 75 # (72% -80% Si), 80 # (78% -85% Si), thiab 90 # (85% -92% Si).
II. Tus nqi tseem ceeb
Ferrosilicon zoo tshem tawm cov pa oxygen thiab sulfur impurities los ntawm cov hlau molten thaum txhim kho lub zog, hardness, thiab hnav tsis kam ntawm cov khoom siv hlau, tau txais nws lub npe menyuam yaus "kev lag luam vitamin" rau steel ntau lawm.
Nws yog tsim los ntawm raw cov ntaub ntawv xws li silica pob zeb thiab hlau concentrate (los yog seem steel) los ntawm siab -kub smelting nyob rau hauv hluav taws xob arc rauv. Cov txheej txheem yog mature thiab dav siv nyob rau hauv scale.
III. Ferrosilicon Production Raw Khoom
Silicon Source:Silica pob zeb yog cov tseem ceeb raw khoom muab silicon, yuav tsum tau SiO₂ cov ntsiab lus Ntau tshaj los yog sib npaug rau 97% uas tsis muaj impurities (aluminium, calcium, magnesium, thiab lwm yam).
Iron Source Raw Khoom:Hlau ore concentrate los yog seem steel khoom siv hlau, uas ua ke nrog silicon los tsim cov hlau.
Tus neeg sawv cev txo qis:Cov ntaub ntawv carbon feem ntau txo cov silicon los ntawm quartzite ntawm qhov kub thiab txias. Kev sib xyaw ua ke muaj xws li coke (tsawg carbon ntau dua lossis sib npaug li 85%) + charcoal (txhim kho cov tshuaj tiv thaiv).
Fluorspar:Ntxiv rau qhov me me (1% -3% ntawm tag nrho cov ntaub ntawv raw) raws li cov dej ntws kom qis slag melting point, txhim kho slag fluidity, thiab pab tshem tawm slag.
Txiv qaub:Ntxiv raws li xav tau los kho slag alkalinity, txo silicon volatilization poob, thiab txhim kho tus nqi rov qab.