Taw qhia
Hauv kev xyaum, cov neeg yuav khoom nug cov lus nug no rau ib qho laj thawj: FeSi 45 feem ntau zoo li pheej yig dua ib tuj dua FeSi 65. Tab sis nyob rau hauv qis alloy steelmaking, qhov kev txiav txim siab tsis tuaj yeem ua rau tus nqi ib tuj. Nws yog ib qho tseem ceeb npaum li cas "zoo silicon" koj ua tau qhia (zoo Si), ruaj khov npaum li cas deoxidation tshwm sim, thiab seb impurities thiab txhaj tshuaj haum rau koj lub qhov rais txheej txheem. Yog koj xav hloovferrosilicon65 mus rau 45, kev hloov pauv yuav tsum tau ua raws li kev tswj hwm kev hloov pauv hauv cov txheej txheem, thiab tsis yog kev hloov pauv yooj yim ntawm txoj haujlwm hauv kev yuav khoom.
1) Kev ua tau yooj yim: chemistry thiab siv Si
Nqe Lus Nug 1: Puas tuaj yeem ferrosilicon 45 technically hloov ferrosilicon 65 hauv cov hlau tsis tshua muaj hlau?
Teb 1:Yog, nyob rau hauv ntau yamferrosilicon45 tuaj yeem siv los ua silicon qhov chaw thiab deoxidizer, yog li kev hloov pauv tau ua tau. Txawm li cas los xij, tus nqi tawm tswv yim yuav tsum tau rov ntsuas dua: FeSi 45 nqa Si ib tuj tsawg dua FeSi 65. Yog tias qhov ntau npaum li cas tsis tau ntsuas, koj yuav pom Si nce qis dua thiab qis dua qhov deoxidation kawg.
Nqe Lus Nug 2: Dab tsi hloov ua ntej thaum tsiv ntawm 65 mus rau 45?
Teb 2:Qhov loj ntawm cov tswv yim nce. Txhawm rau qhia tib tus nqi ntawm Si, FeSi 45 yuav tsum muaj ntau dua FeSi 65. Cov huab hwm coj ntau dua txhais tau tias kev tuav ntau dua, muaj kev pheej hmoo siab dua ntawm oxidation losses thiab ntau dua rhiab heev rau kev nplua thiab kev hloov pauv ntau dua. Yog li ntawd, qhov kev ntsuas raug yog - tus nqi-rau- siv tau-Si, thiab tsis raug nqi- toj ib - tuj.
2) Deoxidation, tawg lub sij hawm thiab yaj stability
Nqe Lus Nug 3: Puas yuav deoxidation ua "tsis muaj zog" yog tias kuv hloov mus rau ferrosilicon 45?
Teb 3:Tsis tas yuav "tsis muaj zog," tab sis feem ntau tswj tau tsawg dua yog tias cheeb tsam tau teeb tsa rau FeSi 65. FeSi 65 tso cai rau tib Si kom nkag tau rau ntawm qhov qis dua, uas txhim kho qhov tseeb ntawm kev txhaj tshuaj thiab txo qhov tshwm sim ntawm kev tawg lig. FeSi 45 kuj tseem tuaj yeem ua haujlwm tau zoo, tab sis vim yog -vim qhov loj ntawm cov khoom nkag, lub cev tsis ruaj khov (nplua nuj, cov nplej dav dav) feem ntau tshwm sim nws tus kheej li "kua-rau-kua" tawg.
Nqe Lus Nug 4: Dab tsi yog qhov ua haujlwm txaus ntshai tshaj plaws tom qab hloov pauv?
Teb 4:Feem ntau, kev pheej hmoo yog tsom mus rau plaub qhov chaw:
- drift ntawm Si tawm los vim - poob thaum lub sij hawm ncig thiab oxidation;
- tawg nyob rau hauv cov tshuaj tiv thaiv lub sij hawm, yog hais tias loj pieces dissolve lig, thiab nplua pieces oxidize sai;
- nce rhiab heev rau slag, thaum hmoov av thiab nplua mus rau hauv slag es tsis txhob hlau;
- nce hauv "cov nyiaj them poob haujlwm" los ntawm tus neeg teb xov tooj, uas ua rau kev noj cov tshuaj ntxiv.
3) impurities thiab ua raws li cov hlau tsis tshua muaj hlau
Nqe Lus Nug 5: Puas yog qhov kev pheej hmoo ntawm impurities siab dua rau ferrosilicon 45?
Teb 5:Tsis tau los ntawm hom, tab sis qhov kev pheej hmoo yuav siab dua nyob ntawm tus neeg muag khoom thiab cov khoom siv raw. Hauv cov hlau tsis tshua muaj hlau, P thiab S feem ntau yog qhov tseem ceeb, thiab qee zaum kuj Al thiab Ca - nyob ntawm cov kev xav tau thiab cov neeg siv khoom kawg. Thaum hloov lub npe, koj tsis tuaj yeem "los ntawm lub neej ntawd" hloov cov qub impurity profile mus rau lub hom tshiab: koj yuav tsum tau kuaj xyuas ob peb pawg thiab kho qhov siab tshaj plaws hauv PO.
Nqe Lus Nug 6: Dab tsi yog txoj hauv kev nyab xeeb tshaj plaws los kuaj xyuas qhov pheej hmoo ntawm impurities ua ntej hloov?
Teb 6:Thov ntau COAs los ntawm cov khoom sib txawv thiab sib piv tsis yog qhov nruab nrab xwb, tab sis kuj yog "qhov phem tshaj" rau koj qhov kev txwv sab hauv. Ib qho ntshiab COA tsis yog pov thawj ntawm kev ruaj ntseg; repeatability ntawm batch mus rau batch yog ib qho tseem ceeb.
Yuav Hloov Li Cas Nrog Tsawg Risk: Kev Xeem thiab PO Cov Cai
Nqe Lus Nug 7: Qhov kev ntsuam xyuas twg yog qhov ua tau zoo tshaj plaws rau kev hloov FeSi 65 nrog FeSi 45?
Teb 7:Qhov ua haujlwm version zoo li no:
Pib nrog kev sim batch, thiab tsis nrog ib daim ntawv cog lus ntim.
Khaws cov tshuab smelting tsis hloov pauv thiab kho tsuas yog FeSi input tus nqi, tsom rau Si lub hom phiaj.
Saib xyuas qhov nce ntawm Si, kev ruaj ntseg ntawm qhov kawg ntawm cov pa oxygen, qhov xwm txheej ntawm cov slag thiab kev sib kis ntawm kev noj nyob rau ntau lub melts.
Yog tias qhov tshwm sim ruaj khov, nthuav qhov ntim maj mam thiab txuas ntxiv saib xyuas cov khoom sib txawv.
Nqe Lus Nug 8: Yam khoom twg PO feem ntau cuam tshuam rau kev kwv yees ntawm FeSi 45 thaum hloov?
Teb 8:Rau kev hloov tej yaam num nws tsim nyog kho:
- chemistry: ntau yam / yam tsawg kawg ntawm Si thiab qhov siab tshaj plaws rau P thiab S (thiab lwm yam impurities tseem ceeb);
- feem: qhov tseem ceeb ntawm koj lub qhov rais pub thiab nkag;
- trifle: nyuaj txwv (feem pua hauv qab qhov loj me) nrog rau qhov ntsuas qhov ntsuas;
- traceability: batch ID ntawm lub hnab thiab ua raws li COA ntawm ib pawg tshwj xeeb;
- Kev lees txais thiab kev thov: sampling puag thiab lub qhov rai tshuaj xyuas.
Cov lus nug nquag
Lus Nug: Puas yog hloov mus rau FeSi 45 ib txwm txo tus nqi?
Teb: Tsis yog. Kev txuag nyiaj yog nyob ntawm qhov txiaj ntsig ntawm Si, kev poob ntawm cov khoom me me thiab ntau npaum li cas tus neeg teb xov tooj "cov nyiaj them poob haujlwm" yuav nce ntxiv.
Nqe Lus Nug: Vim li cas cov haujlwm hloov pauv feem ntau ua tsis tiav?
Teb: Vim yog -vim tsis muaj zog tswj cov feem thiab minutiae, nrog rau - rau kev sib kis ntawm cov khoom siv, uas ua rau qhov nce ntawm Si tsis ruaj khov.
Lus Nug: Puas muaj peev xwm khaws tib lub ntsiab lus nkag thaum hloov mus rau FeSi 45?
Teb: Feem ntau yog, tab sis koj yuav tsum tau xyuas lub sij hawm tawg. Qee lub sij hawm lub sijhawm txhaj tshuaj yog hloov kho kom tsis txhob muaj qhov nce siab hauv Si.
Nqe Lus Nug: Kuv yuav nug dab tsi los ntawm tus neeg muag khoom tshiab FeSi 45 ua ntej kev pom zoo ntim?
Teb: COA hla ntau ntau, cov cim ntau thiab POs nrog kev txwv tsis pub muaj feem cuam tshuam thiab raug nplua.
Vim li cas thiaj xaiv peb?
- Kev them nyiaj yug rau cov haujlwm hloov pauv: peb pab txheeb xyuas tus nqi nkag los ntawm FeSi 65 rau FeSi 45 los ntawm Si logic zoo, thiab tsis yog "los ntawm qhov muag".
- Kev ntsuam xyuas kev ruaj ntseg: COA tsom xam thoob plaws ntau yam khoom siv thiab kev taug qab kom txo tau qhov kev pheej hmoo ntawm kev hloov pauv ntawm tshav kub-rau-kub.
- Kev khaws cia ntawm feem ntau hauv kev xa khoom: ntim thiab thauj khoom nrog kev qhia txog kev txo qis kev puas tsuaj thiab kev nplua nyiaj, uas cuam tshuam ncaj qha rau Si.
- Cov xwm txheej lees txais: peb yuav pom zoo ua ntej ntawm lub hauv paus qauv thiab lub qhov rais thov kom cov kev tsis sib haum xeeb tuaj yeem daws tau sai dua.
Hais txog peb lub tuam txhab
Peb ua haujlwm nrog cov neeg yuav khoom ntawm cov hlau tsis tshua muaj hlau rau leej twg tswj kev deoxidation tseem ceeb, thiab tsis yog tus nqi ib tuj xwb. Raws li lub Hoobkas ncaj qha xa khoom nrog lub peev xwm ruaj khov txhua hli, peb tsom mus rau qhov kev txiav txim siab hloov pauv tau zoo: qhov sib xws ntawm cov khoom siv, cov khoom siv tom qab thauj thiab cov ntaub ntawv meej. Ntau lawm puag - txog 30 000 m²; xa tawm mus rau - 100+ lub teb chaws thiab cheeb tsam; 5 000+ cov neeg siv khoom. Peb muab ferrosilicon, metallurgical silicon thiab lwm yam khoom siv metallurgical thiab txhawb kev ntsuas cov kauj ruam los ntawm kauj ruam kom ntseeg tau tias kev hloov pauv ntawm qib muaj kev ntseeg siab thiab tswj tau.