Kev siv cov roj av coke graphitized zoo tuaj yeem coj cov lag luam kom muaj txiaj ntsig zoo rau kev lag luam hauv ntau yam, suav nrog kev txo cov nqi tsim khoom, txhim kho cov khoom zoo, ua kom zoo dua qub, thiab txhim kho cov txiaj ntsig kev tiv thaiv ib puag ncig. Kev tshuaj xyuas tshwj xeeb yog raws li nram no:
I. Txo Cov Nqi Tsim Khoom thiab Txhim Kho Kev Siv Khoom Siv
Txo Kev Siv Hlau Npua: Cov khoom siv roj av coke zoo graphitized, uas muaj cov pa roj carbon ntau (feem ntau ≥98%) thiab cov khoom tsis huv tsawg, tuaj yeem hloov cov pa roj carbon hauv hlau npua tau zoo. Raws li cov ntaub ntawv kev lag luam, kev siv cov khoom siv recarburizer no tuaj yeem txo kev siv hlau npua los ntawm 20% -40%, txo tus nqi ib tuj ntawm cov castings los ntawm kwv yees li 300-500 yuan. Piv txwv li, lub tuam txhab foundry txuag tau ntau dua ib lab yuan hauv cov nqi yuav hlau npua txhua xyoo los ntawm kev ua kom zoo dua qhov piv ntawm recarburizer.
Txhim Kho Tus Nqi Nqus Tau: Kev kho graphitization ua rau cov pa roj carbon atoms tsim cov qauv txheej txheem, ua rau tus nqi nqus tau ntau ntxiv los ntawm 60% ntawm cov recarburizers ib txwm mus rau 90% -95%. Qhov no txhais tau tias yuav tsum tau recarburizer tsawg dua kom ua tiav cov ntsiab lus carbon, txo cov nqi khoom siv ntxiv. Piv txwv li, hauv kev ua hlau hluav taws xob arc, ntxiv 0.1% -0.3% ntawm graphitized recarburizer tuaj yeem kho cov ntsiab lus carbon hauv cov hlau yaj thaum lub sijhawm luv luv los ntawm 15-20 feeb thiab txo kev siv hluav taws xob.
II. Txhim Kho Cov Khoom Zoo thiab Txhim Kho Kev Sib Tw Hauv Kev Lag Luam
Txhim Kho Kev Ua Haujlwm Casting: Cov graphite microcrystals hauv cov graphitized petroleum coke recarburizers zoo tuaj yeem ua haujlwm ua cov crystallization nuclei, txhawb kev loj hlob ntawm graphite flakes hauv cov hlau cam khwb cia. Hauv cov hlau cam khwb cia grey, qhov no tuaj yeem ua rau lub zog tensile nce ntxiv 15% -25%; hauv cov hlau ductile, nws tuaj yeem txhim kho nodularity los ntawm 10% -20%. Piv txwv li, tom qab hloov mus rau qhov recarburizer no, tus tsim khoom ntawm lub cav tsheb lub tog raj kheej thaiv tau txo qhov casting defect tus nqi ntawm 15% mus rau 3%, txhim kho cov khoom tsim tau zoo heev.
Ua Tau Raws Li Qhov Xav Tau Siab: Cov yam ntxwv ntawm cov sulfur tsawg (≤0.05%) thiab nitrogen tsawg (≤400ppm) ua rau cov roj av coke graphitized recarburizers yog cov khoom siv tseem ceeb rau kev tsim cov khoom siv tsheb zoo, cov khoom siv hluav taws xob cua, thiab lwm yam khoom tseem ceeb. Kev siv cov recarburizer no tuaj yeem tiv thaiv cov qhov tsis zoo ntawm kev casting xws li tawg thiab porosity los ntawm cov sulfur thiab nitrogen impurities, txhim kho cov nqi khoom.
III. Kev Ua Kom Zoo Tshaj Plaws ntawm Kev Tsim Khoom thiab Ua Kom Lub Voj Voog Tsim Khoom Luv Dua
Ua kom lub zog ntawm kev sib xyaw ua kom hlau yaj sai dua: Thaum lub sijhawm ua hlau, cov roj av coke uas muaj cov roj av graphitized zoo tuaj yeem yaj sai thiab faib tau zoo, txo lub sijhawm ua hlau yaj. Piv txwv li, lub tsev hlau tau ua kom lub voj voog ua hlau yaj luv dua 15% -20% tom qab siv cov roj av no, ua rau cov hlau tsim tau ntau dua 10,000 tons txhua xyoo.
Kev Ruaj Kho Cov Txheej Txheem Tsim Khoom: Qhov huv siab thiab qis cov khoom tsis huv ntawm lub recarburizer tiv thaiv kev oxidation thiab kev puas tsuaj ntawm qhov kub siab, txo cov kev hloov pauv ntawm cov khoom tsim tawm. Piv txwv li, hauv kev casting tas mus li, kev siv lub recarburizer no tuaj yeem tswj cov pa roj carbon kom ruaj khov hauv cov hlau molten, zam cov teeb meem zoo ntawm kev casting los ntawm cov pa roj carbon hloov pauv.
IV. Txhim kho cov txiaj ntsig ntawm kev tiv thaiv ib puag ncig thiab ua kom tau raws li cov kev cai ntawm kev txhim kho kom ruaj khov
Txo Cov Pa Phem: Cov yam ntxwv ntawm cov roj av coke uas muaj graphitized petroleum coke recarburizers uas muaj sulfur tsawg thiab nitrogen tsawg ua rau cov pa phem ntawm sulfur dioxide thiab nitrogen oxides tsawg dua thaum lub sijhawm hlawv. Piv txwv li, tom qab siv cov recarburizer no, ib lub chaw ua roj tau txo nws cov nqi desulfurization roj flue los ntawm 40% thiab txiav cov pa phem sulfur dioxide txhua xyoo los ntawm ntau kaum tons.
Txhawb Kev Siv Cov Khoom Siv Rov Qab: Thaum lub sijhawm tsim cov roj av coke graphitized recarburizers, cov cua sov pov tseg tuaj yeem rov qab tau los tsim hluav taws xob, txuag tau 300 kWh ntawm hluav taws xob rau ib tuj ntawm cov khoom. Tsis tas li ntawd, cov roj av tuaj yeem muab rau lwm cov lag luam kev lag luam (xws li cov nroj tsuag ceramic) ua roj, ua tiav kev siv cov khoom siv tau zoo. Piv txwv li, los ntawm tus qauv kev lag luam ncig, lub tiaj ua si eco-industrial txo cov pa roj carbon los ntawm 1.2 tons ib tuj ntawm recarburizer tsim tawm.
Lub sijhawm tshaj tawm: Cuaj hlis-28-2025