Ferrosilicon 75 Tiag tiag yog dab tsi
Ferrosilicon 75, tseem sau FeSi 75 lossis FeSi75, yog hlau-silicon master alloy nqa kwv yees li 72-78% silicon nrog qhov sib npaug tseem ceeb hlau, ntxiv rau cov khoom seem ntawm txhuas, calcium, carbon, phosphorus thiab sulfur. Nws yog tus neeg ua haujlwm deoxidiser thiab alloying ntxiv ntawm steelmaking thiab foundry xyaum, thiab nws kuj yog tus qauv inoculant rau grey thiab ductile hlau. Kev lag luam khoom lag luam tau teev tseg los ntawm cov qauv xws li GB / T 2272 rau ferrosilicon hauv Suav lag luam thiab ISO 5445 thoob ntiaj teb, uas faib cov khoom siv los ntawm cov ntsiab lus silicon, cov chav kawm txhuas thiab cov khoom me me.
Vim tias FeSi 75 tau yuav thiab them los ntawm qhov hnyav, cov pob - lossis - cov hmoov txiav txim siab feem ntau tawm mus txog thaum lig ntawm kev yuav khoom. Qhov ntawd yog tus cwj pwm kim. Daim ntawv lub cev tswj kev sib cais kinetics, silicon rov qab, tsim plua plav, khoom siv thauj khoom thiab, thaum kawg, tus nqi ib tonne ntawm silicon tau yaj hauv cov yaj es tsis poob rau lub slag lossis lub hnab ntim khoom.
Lumps, Granules thiab hmoov piv
| Khoom | FeSi 75 pob (khoom) | FeSi 75 hmoov |
|---|---|---|
| Nominal loj | 10-100 hli | feem ntau hauv qab 1 mm |
| tuav | Loader, hla, lub ntiajteb txawj nqus chute, phau ntawv them nqi | Lined lub hnab loj, ntsia hlau feeder lossis pneumatic txhaj |
| Dissolution hauv kua hlau | Slower, khov kho thiab kwv yees | ceev heev vim yog qhov chaw siab |
| Silicon rov qab | High nyob rau hauv ladle thiab furnace xyaum | Siab thaum txhaj los yog nplawm, rhiab rau entrainment losses |
| Plua plav thiab fume | Tsawg | Siab, xav tau kev tshem tawm thiab kev tiv thaiv ua pa |
| Tus nqi ib tonne | Tsawg dua, kev ua haujlwm yooj yim dua | Siab dua tom qab sib tsoo, kev faib tawm thiab ntim khoom |
| Cov ntawv thov tseem ceeb | Cov nqi hluav taws xob, ladle ntxiv, bulk alloying | Inoculation, vuam consumables, txhuam cov ntaub ntawv, hmoov metallurgy |
Granules nyob rau hauv 1-10 mm band yog qhov kev sib haum xeeb: dawb- ntws, tsis muaj plua plav, thiab ceev txaus rau cov tshuab pub noj tsis tu ncua ntawm cov casters siab.
Txoj Kev Xaiv Qhov Kev Txiav Txim Siab
Plaub txheej txheem lus nug daws feem ntau. Ua ntej, qhov ntxiv yog qhov twg? Ntxiv rau qhov cub hluav taws xob los yog rau lub ladle thaum tapping nplua lumps. Ntxiv rau cov kwj dej hlau, mus rau pwm los yog los ntawm cored hlau nplua hmoov. Qhov thib ob, ntau npaum li cas stirring zog muaj? Hmoov yaj sai sai yog tias nws tawg; tsis muaj nplawm lossis txhaj tshuaj, cov khoom zoo ntab thiab oxidise. Qhov thib peb, dab tsi tswj cov plua plav nyob hauv lub khw muag khoom? Hmoov ib txwm yuav tsum tau muab rho tawm ntawm qhov chaw them nqi thiab kev tiv thaiv ua pa tag nrho. Plaub, lub hom phiaj rov qab yog dab tsi? Rau kev sib npaug ntawm silicon input, hmoov ua tiav kev rov qab zoo dua hauv cov kwj dej inoculation, thaum lub pob ua tiav qhov sib npaug lossis zoo dua rov qab rau hauv cov ladle deoxidation nrog tsawg fume.
Deoxidation, Inoculation thiab txhaj tshuaj xyaum
Nyob rau hauv steel deoxidation, FeSi 75 lumps yog ntxiv rau lub ladle thaum lub sij hawm tapping thiaj li hais tias silicon ua ke nrog yaj oxygen thiab cov silica tshwm sim nyob rau hauv lub slag. Lumps nyiam vim tias qhov kev sib cais tsis tu ncua muab lub sijhawm slag los nqus cov khoom siv tshuaj tiv thaiv. Hauv cam khwb cia hlau, inoculation yog luv luv - qhov rai cov tshuaj tiv thaiv: lub inoculant yuav tsum yaj ua ntej cov hlau nkag mus rau hauv pwm. Hmoov noj rau hauv cov dej ntws los yog cov xaim cored tso tawm silicon tam sim ntawd ntawm lub hauv ntej nucleation, uas yog vim li cas hmoov dominates inoculation thiab kwj kho. Kev txhaj tshuaj metallurgy siv cov hmoov zoo nqa los ntawm cov dej ntws los ntawm lub lance, cov txheej txheem uas tseem haum rau desulphurisation thiab alloy trimming.
Kev tuav, Cia thiab kev nyab xeeb
Ferrosilicon tau muab rau hauv lub hnab loj txog li ib tonne lossis hauv 25 kg hnab rau cov neeg siv khoom me. Kev cia yuav tsum qhuav thiab npog: ferrosilicon tuaj yeem cuam tshuam nrog cov dej noo hauv qhov chaw kaw kom tso tawm hydrogen, yog li silo thiab nkoj - tuav cov cua yuav tsum tau ua kom cua nkag ua ntej nkag thiab ua haujlwm kub yuav tsum tau tswj. Cov hmoov qib yuav tsum tau khaws cia rau hauv cov hnab lined kom txwv oxidation thiab noo noo uptake. Cov plua plav los ntawm cov qib zoo yog ua pa ua pa thiab, thaum muab faib ua kom zoo, tuaj yeem tsim qhov chaw tawg; kev rho tawm hauv zos, av av thiab kev tu vaj tse yog cov txheej txheem tswj. Qhov twg reactive lossis siab - qib aluminium yog siv, xa mus rau cov ntaub ntawv kev nyab xeeb ntawm tus neeg muag khoom thiab siv cov cai tswj kev siv tau rau qib tau txais.
Tus nqi sib piv tshaj tus nqi Tonne
Tus nqi yuav tsis yog tus nqi ntawm silicon hauv yaj. Hloov txhua qhov kev xaiv rau tus nqi ib tonne ntawm cov silicon yaj:
Tus nqi siv tau=tus nqi xa ib tonne / (silicon feem x rov qab)
Ib qib hmoov yuav 8% pheej yig dua tab sis rov qab los ntawm 88% tuaj yeem raug nqi ntau dua li qib pob rov qab ntawm 95%. Kev lag luam chaw taw qhia rau FeSi 72 thiab FeSi 75 loaded ntawm FOB Tuam Tshoj lub hauv paus chaw nres nkoj tseem ceeb tau tsiv mus nyob rau hauv 1,020-1,040 thiab 1,100-1,120 USD / t bands feem nyob rau hauv kev ntsuam xyuas tsis ntev los no, thiab kev sib kis ntawm cov ntaub ntawv feem ntau me dua qhov sib kis tsim los ntawm qhov sib txawv rov qab. Ntxiv cov nqi ntawm kev tshem tawm plua plav, lub hnab ntim khoom thiab lub sijhawm poob thaum lub feeder blocks, thiab qhov sib txawv ntawm qhov sib txawv ntxiv.
Cov lus nug nquag
Q:Dab tsi yog qhov txawv ntawm ferrosilicon 75 lumps thiab ferrosilicon 75 hmoov?
A: Ob leeg nqa tib yam 72-78% silicon ntau. Lumps yog 10-100 mm pieces uas yaj maj mam thiab tsis tu ncua, thaum hmoov yog qis dua li 1 hli thiab dissolves yuav luag tam sim ntawd vim hais tias ntawm nws ntau npaum li cas deg cheeb tsam.
Q:Daim ntawv twg muab ntau dua silicon rov qab?
A: Nyob rau hauv ntau lub ladle deoxidation, lumps feem ntau sib npaug los yog zoo dua vim tias muaj tsawg entrainment. Nyob rau hauv kwj inoculation los yog txhaj tshuaj, hmoov rov zoo dua vim nws disperses thiab dissolves ua ntej cov hlau solidifies.
Q:Cov hmoov puas tuaj yeem hloov pauv rau pob kom txuag tau nqi?
A: Tsuas yog qhov twg cov txheej txheem tuaj yeem cuam tshuam nws. Tsis muaj kev txhaj tshuaj lossis nplawm, cov hmoov zoo zoo li ntab thiab oxidise, yog li qhov pom tseeb txuag feem ntau poob los ntawm kev rov qab qis dua thiab ntau dua fume.
Q:Qhov loj npaum li cas yog ib txwm muaj nyob rau hauv txhua daim ntawv?
A: Lumps feem ntau muaj nyob rau hauv 10-100 mm los yog 10-50 mm txiav, granules nyob rau hauv 1-10 mm, thiab hmoov nyob rau hauv mesh ntau yam xws li 200 mesh los yog finer, tag nrho cov raws li kev pom zoo ntawm cov tsim khoom thiab buyer.
Q:Puas yog aluminium cov ntsiab lus tseem ceeb rau kev siv tshuaj?
A: Yog. Aluminium thiab calcium cov ntsiab lus cuam tshuam rau nucleation tus cwj pwm hauv cam khwb cia hlau, yog li cov qib yuav tsum raug xaiv los ntawm cov chav kawm rau lub hom phiaj microstructure es tsis yog cov ntsiab lus ntawm silicon ib leeg.
Q:Yuav tsum khaws ferrosilicon li cas?
A: Qhuav, npog thiab ventilated. Khaws cov qib zoo hauv cov hnab ntim kom txwv tsis pub cov khoom ntub dej, tso pa tawm ntawm cov silos thiab cov chaw kaw ua ntej nkag, thiab tswj cov plua plav ntawm qhov chaw them nyiaj.