Hauv kev tsim khoom niaj hnub, Deagidation thiab xam nrog kev hloov pauv ntawm cov txheej txheem uas txiav txim siab ncaj qha rau cov kab ntau lawm. Ntawm cov dav dav siv ferroalloy additives,Silicon calcium hmoovthiabSilicon Calcium Cored HlauSawv tawm rau lawv cov khoom muaj peev xwm zoo tshaj plaws rau kev muaj peev xwm thiab suav - Refining kev ua tau zoo. Ob qho tib si yog muaj los ntawm Silicon (Si) thiab calcium (ca)- Cov qauv tseem ceeb rau kev ua kom zoo dua molten steel cov khoom rau kev ua kom zoo dua molten steel zog rau kev ua kom zoo dua molten steel zog rau kev ua kom zoo dua molten steel zog rau kev ua kom zoo dua molten steel zog rau kev ua kom zoo dua molten steel zog rau kev ua kom zoo dua molten steel zog rau kev ua kom zoo dua molten steel zog rau kev ua kom zoo dua molten steel zog rau kev ua kom zoo dua molten steel properties {} Tab sis lawv cov qauv siv lub cev, pub mis rau cov kev sib txawv.
Rau steelmakers, xaiv ntawm calcium silicon hmoov thiab cored xaim tsis yog qhov teeb meem, tab sis kev tswj hwm kev xaiv, thiab txawm tias cov khoom lag luam uas kawg.
Cov ntsiab lus txhais: Dab tsi yog cov hmoov txhuv nplej siab thiab xaim xaim hluav taws xob?
Ua ntej dhia rau hauv kev sib piv, nws yog qhov tseem ceeb kom paub meej cov khoom yooj yim thiab cov qauv tsim ntawm Sica, raws li lawv cov yam ntxwv tso rau hauv lub hauv paus rau lawv qhov kev ua tau zoo hauv kev ua haujlwm stathmaking.
Casi Hmoov: ib txwm hmoov ib txwm muaj ntxiv
Silicon calcium hmoov yog ib qho khoom lag luam ferrroalloy tsim los ntawm crushing, sib tsoo, thiab sievingSilicon Calcium Alloykev cuam tshuam. Nws cov tshuaj raug tshuaj muaj xws li 50-65% silicon, 20-30% calcium, thiab phosphorus (nruj medicly tswj qab 0.5%}}}}}}}}}}}}}}}}}}}}}}}} qeb zoo). Qhov loj me yog feem ntau 0.1-1mm lossis 1-3mm, uas tuaj yeem hloov kho raws li qhov yuav tsum tau ua ntawm cov txheej txheem steelmaking sib txawv (piv txwv li, converter, hluav taws xob rauv).
Raws li ib txwm muaj ntxiv, nws yog feem ntau ntxiv rau Molten hlau los ntawmSab saum toj pub mis(sprinkling rau hauv cov cub tawg los ntawm kev pub mis ntaus) lossisTshob ntxiv(Ntxiv ncaj qha rau hauv lub ladle thaum tab tom txuas). Nws tso siab rau cov kev ua kom sov siab ntawm silicon thiab calcium kom hnov mob nrog cov pa thiab cov hlau muaj teeb meem hauv Molten hlau.
Casi Cored Hlau: Lub siab - eff eff effecticial felfrated additive
Silicon calcium xaim yog ib qho tshiab - Hom additive tsim los daws cov hmoov tsis zoo ntxiv. Nws muaj ob ntu: aHlau Sheath(feem ntau tsawg {- cov hlua roj carbon stip nrog ib daim tuab ntawm 0.3-0.5mm) thiab aCov Khoom Siv Tseem Ceeb(Siab {{- purity silicon calcium hmoov, nrog silicon cov ntsiab lus txog li 65-70% thiab calcium cov ntsiab lus 25-30%). Cov txheej txheem ntau lawm yuav qhwv cov khoom siv tseem ceeb, ua cov hlau txuas txuas ntxiv, ua cov kab hla ntawm 13mm, lossis 19 hli.
Hauv statmaking steelmaking, nws tau pub rau hauv qhov tob ntawm Molten Hlau (1.5-3m hauv qab) los ntawm aHlau Pub Noj TshuabNtawm kev tswj ceev (feem ntau 1-3m / s). Cov hlau txaws melts nyob rau hauv qhov kub ntawm Molten hlau, thiab cov khoom tseem ceeb yog tso tawm rau hauv cov hlau molten rau ua lub luag haujlwm. Qhov no "kev pub mis" sib sib zog ua kom daws cov teeb meem ntawm cov hmoov av ntxiv.
Tseem ceeb sib piv tau: Kev ua tau zoo txiav txim siab txog qhov tshwm sim
Lub hom phiaj tseem ceeb ntawm kev siv silicon calcium additives yog los txhim kho Deoxidation nyhuv thiab suav cov kev txhim kho kev ua tau zoo, yog li kev txhim kho steel zoo thiab ntau lawm. Hauv qab no, peb piv ob cov khoom lag luam los ntawm tsib lub qhov loj me uas ncaj qha cuam tshuam cuam tshuam ntau heev.
1. Lub ntsiab lus siv: cov tub ntxhais ntawm kev ua tau zoo
Qhov ntsuas tus nqi ntawm silicon thiab calcium ncaj qha txiav txim siab ntau npaum li cas ntawm cov quav ntxiv, cov nqi them, thiab deoxidation nyhuv. Nov yog qhov chaw loj tshaj plaws ntawm ob yam khoom lus dag:
Silicon calcium hmoov: Vim tias nws cov hmoov av thiab txoj kev noj mov sab saum toj, nws yog qhov yooj yim cuam tshuam los ntawm cov yam ntxwv xws li Molten Hlau Sab Nraum, nqus dej haus luam yeeb, thiab txaws. Qhov ntau ntawm cov calcium (nrog rau lub qhov cub npau npau Tus nqi siv tiag tiag ntawm cov calcium tsuas yog10–20%, thiab siv tus nqi ntawm silicon yog hais txog60–70%Cov. Yuav kom ua tiav lub hom phiaj deoxidation nyhuv, ntau ntawm cov hmoov yuav tsum tau ntxiv, uas nce tus nqi.
Silicon Calcium Alloy Hlau: Txoj kev pub mis sib nqus tso cai rau cov khoom tseem ceeb uas tau tso tawm hauv qhov chaw siab thiab qis}}}} kub}} kub} - Cov hlau ntsej muag cais cov khoom tseem ceeb ntawm huab cua thaum noj mov, txo qhov loj ntawm cov calcium. Tus nqi ntawm cov calcium tuaj yeem ncav cuag40–60%, thiab siv tus nqi ntawm silicon yog siab li85–95%Cov. Raws li tib lub deoxidation yuav tsum tau, qhov ntau npaum li cas ntawm cov xaim xaim cored tsuas yog 1 / 3-1 / 2 ntawm qhov ntawd ntawm silicon calcium hmoov.
2. Deoxidation & Interusion hloov kho cov nyhuv: Lub Hauv Paus Zoo
Ua tau zoo Deagidation thiab xam nrog kev hloov kho tshiab tuaj yeem txo tus lej ntawm cov roj oxide, txhim kho cov tawv, txhim kho cov tawv, nkees ua rau muaj cov hlau. Qhov sib txawv hauv kev siv cov khoom siv ncaj qha ua rau cov teebmeem sib txawv:
Silicon calcium hmoov: Cov kev faib tawm tsis sib xws ntawm cov ntsiab hauv Molten Steel (yooj yim los sib sau ua ke rau saum npoo) ua rau tsis muaj deoxidation tsis sib xws. Cov suav nrog (feem ntau al₂o₃, sitio₂) yog loj hauv qhov loj me (feem ntau yog 5-10μm) thiab tsis xwm yeem los ua kev tsis zoo sab hauv. Rau siab -} Zoo steel (xws li cov ntawv hlau hluav taws xob (siab}} {{5 yuav tsum tau kho cov kev suav nrog, nce cov kauj ruam ntau lawm.
Casi Hlau: Cov khoom tseem ceeb yog covyees dispersed nyob rau hauv molten steel Cov kev hloov pauv tau hloov pauv me me (1-33m) thiab kheej (calcium silicate), uas tuaj yeem yooj yim flotated thiab tshem tawm. Siv cov iav hlau ua piv txwv, siv cov hlau cored tuaj yeem txo tus lej ntawm ntau dua 60%, thiab tus nqi tsim nyog ntawm cov khoom lag luam steel yog nce los ntawm 15-20%.
3. Kev Ua Haujlwm Txom Nyem & Kev tiv thaiv ib puag ncig: Kev Tiv Thaiv Ntau Lawm
Kev tsim tawm kev ua haujlwm tsis yog tsuas yog hais txog kev nrawm xwb tab sis kuj hais txog qhov muaj kev nyab xeeb ntawm cov txheej txheem thiab ua raws li kev tiv thaiv ib puag ncig. Ob yam khoom pom pom tseeb sib txawv ntawm qhov no
Silicon calcium hmoov: Thaum lub sijhawm cov txheej txheem pub mis, ntau ntawm cov hmoov av thiab calcium vapor yog tsim tawm, uas tsis yog tsuas yog coj mus rau cov khoom pub mis. Ib qho ntxiv, cov hmoov yog yooj yim los nqus dej noo thiab agglomerate, ua rau tsis sib xws pub thiab tsis ruaj khov deoxidation nyhuv. Thaum muaj mob hnyav, tej zaum nws yuav ua rau Molten Hlau Txhaum, muaj kev phom sij ntau lawm.
Casi Alloy Hlau: Cov kauj ruam pub noj hlau tau kaw thiab txuas ntxiv, nrog yuav luag tsis muaj plua plav emissional allission, xws li EU CE Daim Ntawv Pov Thawj Kev Nyab Xeeb). Lub cored hlau tau zoo noo noo tsis kam thiab ruaj khov noj ceev, ua kom muaj kev sib txuas ntxiv. Lub lag luam yog yooj yim, thiab tsuas yog ib tus neeg teb xov tooj xav tau los tswj cov xovu pub pub mis siv, txo tus nqi thauj khoom.
4. Kev tswj noj tshuaj & tus nqi -} muaj txiaj ntsig: kev lag luam efficiency
Txawm hais tias chav nyob ntawm tus nqi ntawm silicon calcium cw yog siab dua li ntawm silicon calcium hmoov, cov txiaj ntsig tus nqi ntau dua thaum xav txog kev siv tshuaj, zoo, thiab ua haujlwm:
|
Taw tes |
Silicon calcium hmoov (CA: 25%, SI: 60%) |
Silicon Calcium cored hlau (CA: 28%, SI: 65%) |
|---|---|---|
|
Chav nyob (USD / Tuj) |
1,800–2,000 |
2,800–3,000 |
|
Noj tshuaj ib tev ntawm cov hlau (kg / t) |
3.0–3.5 |
1.0–1.5 |
|
Additive nqi rau ib tuj ntawm cov hlau (USD / nyhav ib toos) |
5.4–7.0 |
2.8–4.5 |
|
Tus Kheej Hlau Hlau (%) |
80–85 |
95–98 |
|
Tus nqi them rau txhua tuj ntawm cov hlau (USD / nyhav ib toos) |
8.2-10.5 (suav nrog tus nqi them rov qab) |
3.0-4.8 (tsis muaj tus nqi them rov qab) |
5. Siv tau cov xwm txheej: txuam nrog kev xav tau ntau lawm
Cov txheej txheem sib txawv thiab cov kev xav tau cov khoom lag luam tseem ceeb cuam tshuam rau kev xaiv ntawm cov quav ntxiv. Ob yam khoom muaj lawv tus kheej tsim nyog thov tsab ntawv qhia:
Silicon calcium hmoov: Haum rauTsawg -}} end steel ntau lawmLos yog me -}} batch ntau lawm qhov uas ua tau zoo, xws li cov kav hlau me me, thiab cov hlau cam khwb cia. Nws tseem siv rau qee cov laus - fashioned steel mills nrog cov khoom noj rov qab uas tsis tuaj yeem nruab nrog hlau pub khoom siv tshuab.
Silicon Calcium Cored Hlau: Zoo tagnrho rauhigh -} end end steel ntau lawmThiab loj - teev txuas ntxiv tsim, xws li cov ntawv tsheb txuas ntxiv, siab}- Tus kabmob hlau, thiab cov hlau siv hluav taws xob. Nws tseem dav siv nyob rau hauv Converter, hluav taws xob rauv, thiab lf Refining Rauv cov txheej txheem, tshwj xeeb tshaj yog nyob rau hauv kev tsim cov hlau nrog nruj yuav tsum muaj cov ntsiab lus.
Yuav ua li cas xaiv: Kev txiav txim siab - Ua cov moj khaum rau steelmakers
Raws li cov kev sib piv saum toj no, kev xaiv ntawm silicon calcium hmoov thiab cored hlau tsis yog kiag li. Nws yuav tsum tau txiav txim siab raws li koj cov nplai ntau lawm, cov khoom lag luam qib, cov khoom siv, thiab nyiaj txiag. Ntawm no yog qhov txiav txim siab tsis txaus ntseeg- Ua cov moj khaum:
