Tus nqi nqus ntawm recarburizers yog cuam tshuam los ntawm txoj kev "txheej txheem txheej txheem," thiab kev ua kom zoo yuav tsum pib los ntawm cov khoom no thiab lawv cov kev sib cuam tshuam.
Cov hauv qab no yog cov txheej txheem optimization ntsuas los txhim kho tus nqi nqus ntawm recarburizers: Optimization ntawm smelting txheej txheem (qhov tseem ceeb)
Qhov no yog qhov tseem ceeb tshaj plaws thiab muaj txiaj ntsig zoo rau kev txhim kho tus nqi nqus.
1. Kho lub sij hawm ntxiv ("hauv- txoj hauv kev" zoo tshaj "hauv-txoj kev")
Txoj kev nyiam: Hauv qab ntxiv. Ua ntej them nyiaj, ntxiv feem ntau ntawm cov recarburizer xav tau (kwv yees li 60%-80%) rau hauv qab ntawm lub cub tawg, npog nws nrog tus nqi hlau (xws li npua hlau lossis cov hlau seem). Qhov no tiv thaiv kev sib cuag ncaj qha ntawm cov recarburizer thiab cov phab ntsa ntawm lub cub tawg, thaum tib lub sijhawm tso cai rau nws ntxuav thiab tsau los ntawm qhov kub-kub molten hlau, tsim kom muaj lub sijhawm tawg thiab tawg ntev tshaj plaws, uas ua rau muaj qhov siab tshaj plaws thiab ruaj khov haum.
Txoj kev thib ob: Nruab nrab - txheej txheem ntxiv. Thaum lub sij hawm smelting txheej txheem, tom qab ib co ntawm cov hlau tau melted los ua ib tug molten pas dej ua ke, ntxiv cov seem recarburizer rau lub molten pas dej ua ke. Nyob rau theem no, qhov kub ntawm cov hlau molten tseem tseem qis (kwv yees li 1350-1400 degree), tso cai rau lub recarburizer kom sai sai submerged, txo oxidation thiab hlawv tawm.
Zam: Daim ntawv thov nto. Kev siv cov recarburizer ncaj qha rau saum npoo ntawm qhov siab - kub molten hlau yuav ua rau nws kub hnyiab, ua rau cov pa taws ntau thiab ua rau muaj kev nqus tsawg heev (tej zaum qis dua 50%).
Tsis txhob muab ntxiv rau hauv lub ladle: Ntxiv nws thaum lub sij hawm tapping ua rau muaj kev hloov pauv loj hauv tus nqi nqus thiab tuaj yeem ua rau kub poob thiab tsis sib xws.
2. Kev tshawb fawb batching thiab xam. Txheeb xyuas cov nyiaj kom raug ntxiv raws li cov ntsiab lus ntawm cov pa roj carbon monoxide thiab qhov xav tau qhov nqus tau (feem ntau kwv yees li 90%-95% rau hauv qhov cub ntxiv). Tsis txhob ntau ntxiv ua rau saturation nag lossis daus.
Tswj qhov piv ntawm npua hlau mus rau seem hlau, tshwj xeeb tshaj yog ua kom cov ntsiab lus ntawm cov khoom seem ntawm cov hlau yog qhov tseeb.
3. txaus stirring. Electromagnetic stirring ntawm nruab nrab- zaus hluav taws xob rauv nws tus kheej txaus. Txawm li cas los xij, xyuas kom muaj kev sib zog sib zog los txhawb kev sib xyaw ua ke thiab kev sib cais ntawm recarburizer yam tsis ua rau muaj kev kub ntxhov ntau heev uas tuaj yeem nthuav tawm thiab oxidize lub recarburizer.
Rau unstirred induction furnaces los yog txoj kev pouring, tsim nyog phau ntawv stirring yog yuav tsum tau.
4.Kev ntsuas kub thiab sijhawm tswj
Qhov Zoo Tshaj Kub Kub Kub: Recarburizers yaj zoo tshaj plaws nyob rau hauv thaj tsam ntawm 1450℃- 1550℃. Qhov kub qis dhau ua rau qeeb qeeb; kub siab heev (xws li, tshaj 1550℃), thaum dissolving sai heev, exacerbates recarburizer hlawv -tawm thiab hlau oxidation, uas yuav txo tau net nqus thiab nce zog noj.
Lub Sijhawm Tuav Tseg: Tom qab ntxiv lub recarburizer, ib lub sijhawm tuav (feem ntau 5-10 feeb) yog xav tau rau kev ua kom tiav thiab tawg. Lub sij hawm luv dhau ua rau cov pa roj carbon dissolution tsis tiav; ntev dhau ib lub sij hawm yog uneconomical thiab tej zaum yuav ua rau lub caij burn-off.
Summary and Best Practice Recommendations
Txhawm rau txhim kho qhov nqus ntawm recarburizer, cov kev ntsuas hauv qab no tau pom zoo:
Kev Tswj Xyuas Kev Muag Khoom: ** Xaiv granular recarburizers nrog cov ntsiab lus siab ntawm cov pa roj carbon ntau, cov ntsiab lus tsis muaj leej faj, thiab kev kho graphitization.
Txheej Txheem Xauv-hauv:** Txoj cai siv "hauv qab- txoj kev pub mis," uas yog cov kauj ruam zoo tshaj plaws thiab kev lag luam hauv kev txhim kho kev nqus.
Kev Tswj Xyuas Txheej Txheem: Ua kom raug xam cov nqi ntawm recarburizer ntxiv.
Tswj cov txheej txheem them nyiaj: hauv qab recarburizer → nruab nrab txheej teeb / khoom me me → sab saum toj txheej khoom loj.
Tswj lub melting kub nyob rau hauv ib tug tsim nyog ntau yam (xws li, nyob ib ncig ntawm 1500 degree) thiab xyuas kom meej lub sij hawm tuav txaus.
Kev soj ntsuam cov ntaub ntawv: Sau tus nqi ntawm cov recarburizer ntxiv thiab cov ntsiab lus carbon ntawm lub qhov hluav taws xob rau txhua qhov cub, thiab xam qhov tseeb qhov nqus. Los ntawm kev tshawb xyuas cov ntaub ntawv ntev -, nrhiav cov txheej txheem tsis haum rau lub tuam txhab cov khoom siv thiab cov khoom siv raw.
Los ntawm kev ua kom zoo tshaj plaws saum toj no, qhov nqus ntawm recarburizer feem ntau tuaj yeem ruaj khov rau 90% -95% lossis siab dua, yog li ua tiav cov nqi txo thiab txhim kho kev ua haujlwm.
