Cov txheej txheem txheej rau cov electrodes graphite, tshwj xeeb tshaj yog cov txheej txheem antioxidant, ntev lawv lub neej kev pabcuam los ntawm ntau lub tshuab physicochemical. Cov ntsiab cai tseem ceeb thiab cov txheej txheem kev siv tshuab tau piav qhia raws li hauv qab no:
I. Cov Txheej Txheem Tseem Ceeb ntawm Cov Tshuaj Tiv Thaiv Kab Mob Antioxidant
1. Kev rho tawm cov pa roj oxidizing
Nyob rau hauv qhov kub siab arc, cov nplaim graphite electrode tuaj yeem ncav cuag 2,000–3,000 ° C, ua rau muaj kev sib xyaw ua ke nrog cov pa oxygen hauv huab cua (C + O₂ → CO₂). Qhov no suav txog 50–70% ntawm kev siv electrode sidewall. Cov txheej txheej antioxidant tsim cov txheej ceramic lossis hlau-ceramic sib xyaw ua ke kom zoo thaiv kev sib cuag ntawm cov pa oxygen nrog cov graphite matrix. Piv txwv li:
RLHY-305/306 Txheej Txheem: Siv cov qauv nano-ceramic ntses-scale los tsim lub iav-theem network ntawm qhov kub siab, txo cov pa oxygen diffusion coefficients los ntawm ntau tshaj 90% thiab ntev lub neej electrode los ntawm 30–100%.
Cov Txheej Txheem Silicon-Boron Aluminate-Aluminum Ntau Txheej: Siv cov nplaim taws los tsim cov qauv gradient. Cov txheej txhuas sab nraud tiv taus qhov kub siab tshaj 1,500 ° C, thaum cov txheej silicon sab hauv tswj kev ua hluav taws xob, txo cov electrode siv los ntawm 18–30% hauv 750–1,500 ° C.
2. Kev Kho Tus Kheej thiab Kev Tiv Thaiv Thermal Shock
Cov txheej txheej yuav tsum tiv taus kev ntxhov siab los ntawm kev nthuav dav / kev sib cog lus ntau zaus. Cov qauv tsim siab heev ua tiav kev kho tus kheej los ntawm:
Nano-Oxide Ceramic Hmoov-Graphene Composites: Tsim cov zaj duab xis oxide ntom thaum lub sijhawm oxidation thaum ntxov kom sau cov kab nrib pleb me me thiab khaws cia kev ncaj ncees ntawm txheej.
Cov Qauv Polyimide-Boride Bilayer: Cov txheej polyimide sab nraud muab kev rwb thaiv hluav taws xob, thaum cov txheej boride sab hauv ua rau cov yeeb yaj kiab tiv thaiv conductive. Ib qho elastic modulus gradient (piv txwv li, txo qis los ntawm 18 GPa ntawm cov txheej sab nraud mus rau 5 GPa ntawm cov txheej sab hauv) txo qhov kev ntxhov siab thermal.
3. Kev Ua Haujlwm Zoo Tshaj Plaws ntawm Cov Pa Roj thiab Kev Sib Nqus
Cov txheej txheem txheej txheem feem ntau yog koom ua ke nrog cov kev tsim kho tshiab, xws li:
Tsim Qhov Perforated: Cov qauv me me hauv cov electrodes, ua ke nrog cov roj hmab tiv thaiv annular, txhim kho kev sib khi sib koom ua ke thiab txo cov kev pheej hmoo oxidation hauv zos.
Kev Nqus Pa: Nkag mus rau SiO₂ (≤25%) thiab Al₂O₃ (≤5.0%) cov kua dej impregnation rau hauv cov qhov hluav taws xob, tsim ib txheej tiv thaiv 3–5 μm uas ua rau peb npaug tiv taus xeb.
II. Cov Txiaj Ntsig ntawm Kev Siv Hauv Kev Lag Luam
1. Lub Tshuab Hluav Taws Xob Arc (EAF) Kev Ua Hlau
Txo Kev Siv Hluav Taws Xob Rau Ib Ton Hlau: Cov hluav taws xob kho nrog antioxidant txo kev siv los ntawm 2.4 kg mus rau 1.3–1.8 kg/ton, txo qis 25–46%.
Kev Siv Hluav Taws Xob Tsawg Dua: Kev tiv taus ntawm txheej txheej txo qis 20–40%, ua rau muaj qhov ceev ntawm cov hluav taws xob ntau dua thiab txo qhov xav tau ntawm txoj kab uas hla ntawm lub electrode, thiab txo kev siv hluav taws xob ntxiv.
2. Kev Tsim Khoom Silicon Los Ntawm Submerged Arc Furnace (SAF)
Kev Siv Hluav Taws Xob Ruaj Kho: Kev siv hluav taws xob silicon ib-tuj poob qis los ntawm 130 kg mus rau ~ 100 kg, txo qis ~ 30%.
Kev Ruaj Ntseg Zoo Dua: Qhov ntim ntawm cov khoom tseem nyob siab dua 1.72 g/cm³ tom qab 240 teev ntawm kev ua haujlwm tas mus li ntawm 1,200°C.
3. Cov Ntawv Thov Rau Qhov Cub Tiv Thaiv
Kev Ruaj Khov Thaum Kub Siab: Cov electrodes kho tau ntev txog 60% ntawm 1,800 ° C yam tsis muaj txheej txheej tawg lossis tawg.
III. Kev Ntsuas Txuj Ci thiab Kev Sib Piv ntawm Cov Txheej Txheem
| Hom Tshuab | Cov Khoom Siv Txheej | Cov Txheej Txheem Txheej Txheem | Kev Ua Neej Ntev Dua | Cov Xwm Txheej ntawm Daim Ntawv Thov |
| Cov txheej txheem nano-ceramic | RLHY-305/306 | Qhov tuab ntawm cov tshuaj tsuag: 0.1–0.5 hli; qhov kub thiab txias kom qhuav: 100–150°C | 30–100% | Cov EAF, SAF |
| Cov nplaim taws ntau txheej | Silicon-boron aluminate-aluminate | Txheej silicon: 0.25–2 hli (2,800–3,200°C); txheej txhuas: 0.6–2 hli | 18–30% | Cov EAF muaj zog heev |
| Lub tshuab nqus tsev impregnation + txheej | SiO₂-Al₂O₃-P₂O₅ kua sib xyaw ua ke | Kev kho lub tshuab nqus tsev: 120 feeb; kev ua kom noo: 5–7 teev | 22–60% | SAFs, cov cub tawg tiv taus |
| Cov txheej txheem nano-coatings uas kho tau tus kheej | Nano-oxide ceramic + graphene | Infrared kho: 2 teev; hardness: HV520 | 40–60% | Cov EAFs Zoo Tshaj Plaws |
IV. Kev Tshuaj Xyuas Txog Kev Lag Luam thiab Kev Siv Tshuab
1. Tus nqi-Cov txiaj ntsig
Kev kho cov txheej txheem suav txog 5–10% ntawm tag nrho cov nqi hluav taws xob tab sis ntev lub neej kev pabcuam los ntawm 20–60%, txo cov nqi hluav taws xob ib tuj ntawm cov hlau los ntawm 15–30%. Kev siv hluav taws xob txo qis los ntawm 10–15%, ntxiv txo cov nuj nqis tsim khoom.
2. Cov txiaj ntsig ntawm ib puag ncig thiab kev sib raug zoo
Txo qhov zaus hloov electrode kom tsawg dua qhov ua rau cov neeg ua haujlwm siv zog thiab muaj kev pheej hmoo tsawg dua (piv txwv li, kub hnyiab heev).
Ua raws li cov cai txuag hluav taws xob, txiav cov pa CO₂ los ntawm ~ 0.5 tons ib tuj ntawm cov hlau los ntawm kev siv hluav taws xob tsawg dua.
Xaus lus
Cov txheej txheem txheej graphite electrode tsim kom muaj ntau txheej tiv thaiv los ntawm kev sib cais lub cev, kev ruaj khov tshuaj lom neeg, thiab kev ua kom zoo dua qub, ua kom muaj zog dua hauv qhov kub thiab txias, oxidizing ib puag ncig. Txoj kev siv tshuab tau hloov zuj zus los ntawm ib txheej txheej mus rau cov qauv sib xyaw thiab cov ntaub ntawv kho tus kheej. Kev nce qib yav tom ntej hauv nanotechnology thiab cov ntaub ntawv qib siab yuav ua rau kev ua haujlwm txheej txheem siab dua, muab cov kev daws teeb meem zoo dua rau cov lag luam kub thiab txias.
Lub sijhawm tshaj tawm: Lub Yim Hli-01-2025