Ferrosiliconyog binary alloy ntawm hlau thiab silicon, nrog silicon (Si) thiab hlau (Fe) ua nws cov khoom tseem ceeb. Nws yog tsim los ntawm siab -kub smelting nyob rau hauv submerged arc rauv.
Cov ntaub ntawv raw:Quartz xuab zeb (SiO₂ Ntau dua lossis sib npaug li 99%), coke (tsawg carbon ntau dua lossis sib npaug li 85%), thiab cov hlau seem (Fe Ntau dua lossis sib npaug li 98%). Coke ua raws li tus neeg sawv cev txo qis, txo cov silicon hauv cov xuab zeb quartz ntawm 1700-2000 degree, uas tom qab ntawd fuses nrog hlau los tsim cov hlau.
Cov yam ntxwv tseem ceeb:Melting point 1200-1300 degree, ceev 6.8-7.2 g / cm³. Cov ntsiab lus silicon siab dua ua rau muaj zog dua thiab brittleness, thiab muaj zog deoxidation thiab inoculation zog.
Muaj nuj nqis:Muaj ntau lub luag haujlwm suav nrog deoxidation, desulfurization, alloying, thiab inoculation, nws yog ib qho tseem ceeb ntawm "ntau-functional, low-nqi" raw cov ntaub ntawv hauv kev lag luam metallurgical.
Ferrosilicon Qib System
FeSi qib tau muab faib ua "silicon cov ntsiab lus + qib impurity". Cov kev txwv tsis pub muaj thiab cov xwm txheej siv tau ntawm cov qhab nia tseem ceeb tau txhais kom meej, thiab muaj tag nrho ntawm 21 qib. Cov qib tseem ceeb yog raws li nram no:
| Qib | Silicon (Si) Cov ntsiab lus ntau yam | Cov ntsiab lus siab tshaj plaws ntawm cov impurities loj (Al/Fe/C/S/P) | Cov yam ntxwv tseem ceeb | Tej kev siv |
| FeSi90Al0.5 | 87.0%-95.0% | 0.5% / paj / 0.2% / 0.05% / 0.04% | High purity, tsawg impurities | Cov khoom siv raw rau siab -kawg hluav taws xob alloys thiab cov khoom siv semiconductor |
| FeSi90Al3.0 | 87.0%-95.0% | 3.0% / 0.2% / 0.05% / 0.04% | High silicon, nruab nrab impurities | Inoculants rau tshwj xeeb alloy smelting thiab precision casting |
| FeSi75Al0.5-A | 72.0%-80.0% | 0.5% / paj / 0.15% / 0.05% / 0.04% | Tus nqi siab -kev ua tau zoo piv, qis aluminium | Deoxidizers rau siab - zoo steel thiab spheroidizing cov neeg ua haujlwm rau cov hlau ductile |
| FeSi75Al1.0-B | 72.0%-80.0% | 1.0% / 0.15% / 0.05% / 0.04% | Ntau yam, tus nqi nruab nrab | Deoxidizers thiab alloying ntxiv rau cov hlau zoo tib yam |
| FeSi65Al2.0 | 60.0%-67.0% | 2.0% / 0.2% / 0.05% / 0.04% | Nruab nrab silicon, haum rau casting | Inoculants rau grey cam khwb cia hlau thiab tsawg alloy steel ntau lawm |
| FeSi45Al4.0 | 40.0%-47.0% | 4.0% / paj / 0.3% / 0.05% / 0.04% | Tsawg silicon, siab toughness | Txo cov neeg ua haujlwm rau me me cam khwb cia hlau qhov chaw thiab magnesium smelting |
Nco tseg:Chav tsev ntawm impurity cov ntsiab lus yog pawg loj. C, S, thiab P yog cov kev txwv dav dav. Qee cov qib tshwj xeeb tuaj yeem hloov kho rau cov kev xav tau impurity (xws li qis- sulfurFeSi 75, S Tsawg dua lossis sib npaug li 0.03%).
Core Application Scenarios thiab Technical Parameters of Ferrosilicon
(1) Kev lag luam Steelmaking: Deoxidation, Alloying thiab Pab Ua Haujlwm
Ferrosilicon yog "cov khoom siv tseem ceeb" ntawm steelmaking, thiab nws tau sib xws nrog cov khoom siv sib txawv xws li cov hloov pauv thiab hluav taws xob rauv taws:
Deoxidation muaj nuj nqi:
Silicon muaj lub zog tsis muaj zog rau cov tshuaj tiv thaiv nrog oxygen, thiab nws nyiam ua ke nrog cov pa oxygen hauv cov hlau molten los ua SiO₂, uas raug tshem tawm nrog cov slag. FeSi75 yog lub ntsiab deoxidizer, ntxiv ntawm 0.3% -0.8% ntawm cov hlau molten. Nws tuaj yeem txo cov pa oxygen ntawm cov hlau molten los ntawm 80-100 ppm rau 30-50 ppm, txo cov porosity thiab suav nrog cov tsis xws luag.
Alloying muaj nuj nqi:
Nws ntxiv silicon los txhim kho lub zog thiab hardness ntawm hlau. Piv txwv li, thaum tsim Q355 qis- alloy steel, ntxiv 0.5% FeSi75 nce tensile lub zog los ntawm 10% -15%, ua rau nws haum rau cov hlau siv hauv kev tsim kho thiab tshuab.
Heating agent muaj nuj nqi:
Ferrosilicon hmoov (100-200 mesh)tso cua sov ntau thaum hlawv. Siv los ua cov khoom siv cua sov rau cov kaus mom ingot, nws tuaj yeem ua rau cov khoom lag luam nce ntxiv los ntawm 10% -15% thiab txo qis qhov tsis xws luag.
(2) Kev lag luam Foundry: Inoculants thiab Spheroidizing Agents
Ferrosilicon yog "kev tswj hwm kev ua tau zoo" hauv kev tsim cov hlau cam khwb cia, feem ntau haum rau grey cam khwb cia hlau thiab cov hlau ductile:
Inoculants:
Ferro Silicon 75 thiabFerro Silicon 65yog siv los ua inoculants, ntxiv ntawm 0.2% -0.5% ntawm cov hlau molten, txhawb graphitization nag lossis daus, refining graphite nplej, thiab ua rau muaj kev cuam tshuam toughness ntawm grey cam khwb cia hlau los ntawm 20% -30%, haum rau cav blocks thiab tshuab cuab yeej txaj;
Spheroidizing Agents:
Siab -silicon ferrosilicon (FeSi 75%) ua ke nrog magnesium alloys yog siv los ua tus neeg sawv cev spheroidizing rau cov hlau zas, txhawb cov spheroidization ntawm graphite, ua tiav tus nqi spheroidization ntau dua 90%, nce lub zog tensile ntawm ductile hlau los ntawm 300MPa rau ntau tshaj 45MPa engineering. ntu.
(3) Alloy Production thiab Magnesium Smelting
Ferroalloy Txo Tus Neeg Saib Xyuas:
High-silicon ferrosilicon (FeSi90), vim nws cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.2%), yog siv los ua tus neeg sawv cev rau qis-carbon ferrochrome thiab ferrosilicon-manganese alloys. Nws txo qhov ua tau zoo yog 30% -40% siab dua coke, zam cov pa roj carbon ntau ntxiv hauv cov hlau.
Core Raw Khoom rau Magnesium Smelting:
Nyob rau hauv cov txheej txheem Pidgeon rau magnesium smelting, 75 # FeSi yog siv los ua tus neeg sawv cev kom txo tau magnesium nyob rau hauv CaO·MgO. 1.2-1.3 tons ntawm Ferro Silicon 75% yog siv rau txhua tuj ntawm hlau magnesium tsim. Qhov ntsuas kub txo yog tswj ntawm 1100-1200 degree, thiab magnesium rov qab tuaj yeem ncav cuag 85%.
(4) Lwm Daim Ntawv Thov Tshwj Xeeb
Kev lag luam Mineral Processing:
FeSi hmoov (200-300 mesh) yog siv los ua ib theem ncua hauv slurry los kho slurry ceev (1.2-1.5 g / cm³), txhim kho kev sib cais efficiency ntawm complex ores thiab nce concentration qib los ntawm 5% -8%;
Cov khoom siv vuam:
FeSi65 yog siv los ua txheej txheej rau vuam electrodes, ua tiav deoxidation thaum lub sij hawm vuam, txo vuam porosity thiab slag inclusions, thiab txhim kho weld tensile zog thiab corrosion kuj, haum rau cov qauv steel thiab pipeline vuam;
Kev lag luam tshuaj:
High -silicon ferrosilicon (FeSi90) yog siv los tsim organosilicon. Silicon reacts nrog chloromethane los tsim methylchlorosilane, uas yog ntxiv synthesized rau hauv silicone roj hmab, sealants, thiab lwm yam khoom, haum rau kev tsim kho thiab cov khoom siv hluav taws xob.
Kev xaiv Logic thiab kev txiav txim siab rau qib Ferrosilicon
(1) Cov Ntsiab Cai Xaiv Tsa
Raws li "Purity Requirements":
Rau siab -kawg electronics thiab tshwj xeeb alloys, xaiv FeSi90 series (tsawg txhuas, tsis muaj impurities); rau kev ua hlau zoo tib yam thiab casting, xaiv FeSi75 series (tus nqi siab -kev ua tau zoo); rau me me cam khwb cia hlau qhov chaw, xaiv FeSi45 series (tsawg silicon, siab toughness);
Raws li "Functional Requirements":
Rau deoxidation, ua qhov tseem ceeb Ferro Silicon alloy 75 (cov ntsiab lus silicon nruab nrab, cov tshuaj tiv thaiv siab); rau inoculation, xaiv FeSi65 (siab impurity kam rau ua, tsis muaj nqi); rau kev txo cov neeg ua haujlwm, xaiv FeSi90 (tsawg carbon, muaj peev xwm txo qis).
(2) Kev ceev faj rau kev siv
Dosage tswj:
Kev sib ntxiv ntau dhau tuaj yeem ua rau embrittlement ntawm steel / cam khwb cia hlau (xws li, yog tias FeSi75 ntxiv tshaj 1.0%, qhov cuam tshuam ntawm cov hlau yuav txo qis dua 20%);
Cia tej yam kev mob:
Khaws rau hauv qhov chaw qhuav thiab qhov cua, tsis txhob ya raws oxidation (tom qab oxidation, SiO₂ zaj duab xis yuav tsim rau saum npoo, txo cov reactivity);
Standard compatibility:
Cov khoom xa tawm yuav tsum ua raws li cov qauv thoob ntiaj teb (xws li FeSi75 sib haum rau ASTM A480 Qib 75, EN 15597-1 Hom FeSi75).
