Silicon calcium(feem ntau abbreviatedSiCa) yog ib qho ferroalloy feem ntau ntawm silicon thiab calcium, nrog me me ntawm hlau, txhuas, thiab carbon. Nws occupies ib tug tshwj xeeb txoj hauj lwm nyob rau hauv metallurgy vim nws dual muaj nuj nqi raws li ib tugmuaj zog deoxidizerthiabdesulfurizing tus neeg sawv cev. Steelmakers thoob ntiaj teb cia siab rau silicon calcium los ua kom huv, siab - steels kev ncaj ncees rau tsheb, kev tsim kho, thiab kev siv hluav taws xob.
Tsis zoo li cov pa ferroalloys, silicon calcium hloov cov morphology ntawm non-metallic inclusions - tshwj xeeb tshaj yog alumina (Al₂O₃) thiab manganese sulfides (MnS) - rau hauv globular, tsis tshua muaj teeb meem. Qhov kev hloov pauv no ua rau txhim kho ductility, toughness, thiab qaug zog lub neej ntawm cov hlau tiav. Lub alloy kuj yog dav siv nyob rau hauv foundries raws li ib tugnodularizerrau ductile hlau thiab raws li ib tug inoculant nyob rau hauv grey hlau ntau lawm.
| Yam khoom | Silicon Calcium | Ferrosilicon |
|---|---|---|
| Deoxidation | Zoo heev | Zoo |
| Desulfurization | Zoo heev | pluag |
| Ntxiv Kev Hloov Kho | Yog lawm | Tsis muaj |
| Nozzle Clogging | Txo | Tsis muaj kev txhim kho |
Chemical Composition & Physical Properties
Cov lus hauv qab no nthuav tawm cov qauv tshwj xeeb rau kev lag luam silicon calcium alloys (Qib A, hwm). Cov khoom xyaw tiag tiag yuav txawv ntawm tus tsim khoom thiab xaus - siv qhov yuav tsum tau ua.
| Khoom / Khoom | Hom kab mob | Sau ntawv |
|---|---|---|
| Calcium (Ca) | 28 – 32 % | Cov qib Ca siab dua (txog 35%) muaj rau kev kho kom zoo |
| Silicon (Si) | 55 – 65 % | Pab txhawb rau lub zog deoxidation |
| Hlau (Fe) | 4 – 8 % | Qhov nyiaj tshuav; cuam tshuam qhov ntom ntom thiab yaj tus cwj pwm |
| Aluminium (Al) | < 1.5 % | Tswj kom tsis txhob muaj kev suav nrog |
| Cov pa roj carbon (C) | < 0.8 % | Tsawg carbon qib muaj rau ultra-cov hlau huv |
| Phosphorus (P) | < 0.04 % | nruj tswj kom toughness |
| Sulfur (S) | < 0.04 % | Tsawg sulfur txhim kho desulfurization efficiency |
| Melting point | ~ 1,250 - 1,320 degree | Nyob ntawm qhov tseeb Ca/Si piv |
| Qhov ntom ntom | 2.3-2.6g / cm³ | Nws txawv nrog particle loj tis |
Cov ntawv thov tseem ceeb hauv Modern Metallurgy
🏭 Steelmaking (Ladle Refining)
Silicon calcium ntxiv thaum lub sij hawm theem nrab steelmaking raudeoxidizethiabdesulfurizelub molten da dej. Nws reacts nrog yaj oxygen thiab sulfur los tsim calcium silicates thiab calcium sulfides uas ntab tawm mus rau hauv slag. Lub resulting hlau muaj tsawg inclusions, txhim kho castability, thiab superior mechanical zog.
Hauv kev nruam nruam, SiCa pab tiv thaiv nozzle clogging los ntawm kev hloov kho alumina rau hauv qis - melting calcium aluminate theem.
🔩 Foundry & Cam khwb cia hlau
Hauv kev tsim cov hlau ductile, silicon calcium yog siv los ua ib qhonodularizing tus neeg sawv cevlos txhawb kev tsim ntawm spheroidal graphite. Nws kuj ua raws li qhov ua tau zooua tsis taus parau grey cam khwb cia hlau, refining carbide qauv thiab txhim kho machinability.
Foundries txaus siab rau SiCa rau nws cov lus teb zoo ib yam thiab muaj peev xwm txo qis kev nyiam txias hauv nyias- phab ntsa castings.
Tshaj li kev siv cov pa, silicon calcium tau txais traction hauvtshwj xeeb alloyntau lawm rau siab -kub siv, thiab raws li ib tugtxo tus neeg sawv cevhauv kev tsim lwm cov hlau xws li magnesium thiab tsis tshua muaj -lub ntiaj teb alloys. Kev tshawb fawb tseem tab tom tshawb nrhiav SiCa ua cov khoom muaj peev xwm nyob rau tom ntej - cov roj teeb anodes thiab cov khoom siv thermal cia.
Cov Txheej Txheem Tsim Khoom & Cov Khoom Muag
submerged hluav taws xob arc furnaces(SAF) siv tus nqi siab -purity quartzite, calcined txiv qaub (CaO), thiab carbonaceous reductants (petroleum coke, anthracite, los yog charcoal). Cov tshuaj tiv thaiv smelting tshwm sim ntawm qhov kub ntawm 1800 thiab 2100 degree, qhov twg silicon thiab calcium oxides raug txo rau hauv daim ntawv thiab ua ke rau hauv cov hlau.
Cov molten alloy yog tapping rau hauv refractory-lined ladles thiab cam khwb cia rau hauv tiaj tus ingots los yog granular forms. Tom qab txias, cov khoom yog crushed, tshuaj ntsuam, thiab muab faib mus rau hauv tus qauv particle loj:
- Hmoov:0-2 hli (rau kev txhaj tshuaj thiab cored hlau)
- Zoo:2-5 hli
- Granular:5-15 hli
- Lub pob:15-50mm (rau ladle ntxiv)
Cov chaw tsim khoom ua lag luam suav nrogSab hauv MongoliathiabNingxianyob rau hauv Suav teb, lubMinas Geraislub xeev hauv Brazil, thiab covUralscheeb tsam nyob rau hauv Russia. Cov neeg tsim khoom hauv Suav teb tswj hwm kev xa tawm thoob ntiaj teb, suav txog kwv yees li 68% ntawm kev lag luam hauv hiav txwv.
Market Dynamics & Nqe Trends
Lub ntiaj teb silicon calcium kev lag luam yog zoo li tus steel ntau lawm, nqi zog, thiab ib puag ncig kev cai. Hauv 2025-2026, tus nqi tau ruaj khov vim qhov kev thov muaj zog los ntawm tsheb-qib steel sectors thiab kev siv nyiaj txiag hauv Asia thiab Middle East.
Tus nqi tseem ceeb tsav tsheb:
- Cov nqi hluav taws xob hauv cheeb tsam tsim khoom (SAF rauv yog lub zog- siv zog).
- Muaj thiab tus nqi siab -qib txiv qaub thiab quartzite.
- Freight nqi thiab logistics cuam tshuam.
- Environmental compliance cost (carbon capture, khib nyiab).
Market Analyst project aKev loj hlob txhua xyoo (CAGR) ntawm 4.2%Los ntawm 2026 mus rau 2032, tau tsav los ntawm kev hloov mus rau hluav taws xob arc rauv (EAF) steelmaking thiab thawb rau ultra-qis-sulfur steels nyob rau hauv lub zog tauj dua tshiab.
Cov lus nug nquag nug (FAQ)
Cov lus teb rau cov lus nug ntau tshaj plaws thiab kev lag luam ntawm silicon calcium alloy.
1.Dab tsi yog silicon calcium alloy siv rau?
Silicon calcium feem ntau yog siv los ua deoxidizer, desulfurizer, thiab suav nrog kev hloov pauv hauv steelmaking. Nws pab tsim cov hlau huv nrog cov khoom siv kho kom zoo dua qub thiab tseem siv tau rau hauv cov ntawv thov kev tsim ua cov inoculant thiab nodularizer rau cov hlau ductile.
2.Dab tsi yog qhov muaj pes tsawg leeg ntawm silicon calcium alloy?
Standard silicon calcium alloys feem ntau muaj 28-32% calcium thiab 55-65% silicon, nrog rau qhov sib npaug yog hlau, txhuas, carbon, thiab kab kawm. Cov qib hwm muaj peev xwm muaj cov ntsiab lus calcium txog li 35% rau kev kho kom zoo.
3.Silicon calcium txhim kho steel zoo li cas?
Silicon calcium hloov pauv uas tsis yog -hlau suav nrog, tshwj xeeb tshaj yog alumina thiab sulfides, ua rau muaj kev phom sij tsawg dua, globular forms. Qhov no txo cov anisotropy, txhim kho ductility, txhim khu kev cuam tshuam toughness, thiab yields huv si steel nrog zoo qaug zog tiv thaiv thiab castability.
4.Qhov kev lag luam twg siv cov silicon calcium ntau tshaj?
Kev lag luam steel suav txog kwv yees li 85% ntawm silicon calcium noj, ua raws li cov chaw tsim khoom (8%) thiab cov neeg tsim khoom tshwj xeeb alloy (5%). Qhov seem 2% mus rau hauv kev tshawb fawb thiab kev siv niche xws li cov khoom siv roj teeb thiab kev kho cua sov.
5.Yog silicon calcium alloy kim piv rau lwm yam ferroalloys?
Silicon calcium yog qhov zoo tshaj plaws ferroalloy. Nws tus nqi ib tonne feem ntau yog nyob ntawm $ 1,800 thiab $ 2,500 nyob ntawm kev ua lag luam, purity, thiab cov khoom siv saw. Nws yog tus nqi ntau dua li ferrosilicon lossis silicomanganese tab sis muaj cov txiaj ntsig tshwj xeeb uas ua kom pom tseeb tus nqi.
6.Dab tsi yog lub ntiaj teb cov neeg tsim khoom ntawm silicon calcium?
Cov neeg tsim khoom loj suav nrog Tuam Tshoj (Inner Mongolia, Ningxia, thiab Qinghai xeev), Brazil, Russia, Is Nrias teb, thiab Tebchaws Meskas. Tuam Tshoj ib leeg suav txog ze li 70% ntawm lub ntiaj teb no muaj peev xwm tsim tau, nrog rau txhua xyoo tso zis ntau tshaj 500,000 tonnes.
7.Yuav ua li cas yog silicon calcium alloy tsim?
Silicon calcium is produced in submerged arc furnaces using quartzite, lime (calcium oxide), and carbonaceous reducing agents (coke or charcoal). The reaction occurs at 1800–2100 ℃ in a two-stage smelting process. The molten alloy is then cast into ingots and crushed to customer specifications.
8.Dab tsi yog qhov ntau thiab tsawg ntawm silicon calcium?
Kev lag luam silicon calcium yog nkag rau hauv ntau qhov ntau thiab tsawg: 0-2 mm (hmoov), 2-5 mm (zoo), 5–15 mm, 15–25 mm, thiab 25–50 mm (loj). Qhov ntau thiab tsawg tshwj xeeb tuaj yeem hloov kho rau cored hlau txhaj lossis ladle ntxiv kev coj ua.
9.Puas silicon calcium muaj kev txhawj xeeb txog ib puag ncig lossis kev nyab xeeb?
Silicon calcium yog cais raws li cov khoom uas tsis yog - cov khoom uas muaj kev phom sij, tab sis cov plua plav zoo tuaj yeem ua rau lub qhov muag thiab ua pa. Kev tsim nyog PPE (puab qhov ncauj qhov ntswg, hnab looj tes, tsom iav) raug pom zoo thaum tuav. Cov txheej txheem tsim khoom tsim tawm CO₂ emissions; ntau cov nroj tsuag tam sim no tau txais cov pa roj carbon capture thiab kev sib txuas ntxiv zog ntxiv los txo cov hneev taw.
10.Yuav ua li cas rau yav tom ntej ntawm kev lag luam silicon calcium?
Kev ua lag luam thoob ntiaj teb silicon calcium tau kwv yees tias yuav loj hlob ntawm CAGR ntawm 4.2% txog 2032, uas tau tsav los ntawm kev thov nce siab rau qib siab - qib tsheb hlau, kev tsim kho vaj tse, thiab cov phiaj xwm ntsuab steel. Kev tsim kho tshiab hauv ladle metallurgy thiab hluav taws xob arc rauv (EAF) steelmaking kuj tseem txhawb kev noj.
📌 Tsis lees paub:Cov ntaub ntawv kev lag luam thiab cov ntaub ntawv ua lag luam yog nyob ntawm cov chaw lag luam thiab yog npaj rau kev siv dav dav. Cov khoom tshwj xeeb tshwj xeeb yuav tsum tau txheeb xyuas nrog cov neeg muab ntawv pov thawj. Nco ntsoov sab laj cov ntaub ntawv kev nyab xeeb (SDS) ua ntej tuav cov khoom siv calcium calcium.
Cim npe nrov: Tuam Tshoj sica manufacturers, lwm tus neeg