Natural gas vertical furnaces for melting iron yog tsim los nrog cov qauv thiab cov hauv paus ntsiab lus uas zoo ib yam li cov coke - hlawv cupolas, tab sis lawv muaj cov yam ntxwv sib txawv. Kab lus no delves rau hauv cov qauv, txheej txheem melting, thiab kev ua haujlwm ntawm cov cub tawg, hais txog lawv cov txiaj ntsig thiab cov yam ntxwv tshwj xeeb.
Melting yam ntxwv
Natural gas vertical furnaces tsis siv coke, tshem tawm cov peev xwm kom muaj cov ntsiab lus carbon ntxiv hauv cov hlau molten. Yog li ntawd, cov ntsiab lus ntawm cov pa roj carbon monoxide nyob rau hauv cov hlau molten feem ntau yog qis qis. Tus nqi burnout ntawm carbon yog cuam tshuam los ntawm thawj cov ntsiab lus carbon nyob rau hauv tus nqi: nrog ib tug 3% carbon nqi, qhov burnout tus nqi yog nyob ib ncig ntawm 5%, thaum ib tug 4% carbon nqi ua rau burnout tus nqi kwv yees li 12-13%. Vim qhov tsis tshua muaj cov pa roj carbon monoxide no, cov cub tawg no feem ntau ua haujlwm nrog cov hluav taws xob hluav taws xob ntau dua li ua haujlwm raws li cov khoom siv hluav taws xob sib txuas.
Lub theoretical combustion kub ntawm natural gas yog qis dua li ntawm coke, uas ua rau lub qhov hluav taws xob kub rau molten hlau feem ntau ntawm 1400℃thiab 1450 degree. Kev tsim kho thiab kev ua haujlwm ntawm lub qhov cub hluav taws xob ntsug txawv qhov sib txawv ntawm cov coke- hlawv cupolas, tshwj xeeb tshaj yog hais txog cov ntaub ntawv hauv ob sab phlu, cov khoom siv, thiab cov txheej txheem tswj. Element burnout tus nqi rau silicon thiab manganese tseem zoo ib yam li cov hauv coke- hlawv tshuab.
Hauv ob sab phlu thiab kho
Lub hauv ob sab saum toj ntawm cov dej -coj grate thiab hauv qab nws feem ntau muaj corundum- hom refractory cov ntaub ntawv uas muaj silicon carbide (SiC) thiab tsawg kawg nkaus ntawm TiO2 los yog Cr2O3. Cov hauv ob sab phlu yuav tsum tau tsim siv txoj kev ramming lossis casting, thiab kev kho yog tsim nyog kwv yees li ntawm 15 hnub ntawm kev ua haujlwm tas mus li, tsom mus rau thaj chaw saum toj kawg nkaus.
Refractory Balls
Cov pob refractory, feem ntau yog siv los ua cov txheej cushioning ntawm cov dej -cooled grate, tiv thaiv cov tshuaj corrosion thiab tswj tau siab - qhov kub thiab txias. Feem ntau, 150mm txoj kab uas hla cov khoom siv, nrog rau qhov siab ntawm 400mm mus rau 600mm cuam tshuam rau cov hlau molten kub.
Hlau Charge thiab Flux
Tus nqi hlau tsom iav uas yog coke- hlawv cupolas, tsim los ntawm npua hlau, rov siv dua, thiab cov hlau tsis muaj zog (tsis pub ntau tshaj 20%). Kev huv ntawm tus nqi yog qhov tseem ceeb kom tsis txhob muaj qhov ua tsis tiav. Flux cov ntaub ntawv, xws li limestone thiab tawg iav, ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm, cuam tshuam slag fluidity thiab melting efficiency.
Kev ua haujlwm melting
Nruab nrog automated tswj systems, lub ntuj gas ntsug rauv pib nrog ib tug meej kev soj ntsuam ua ntej ignition. Kev ua kom zoo ntawm cov pob refractory yog qhov tseem ceeb ua ntej ntxiv cov khoom siv hlau los tiv thaiv kev ua kom muaj zog ntawm lub qhov hluav taws xob hlau.
Charge thiab combustion Control
Kev them nyiaj yuav tsum tau ua tib zoo tswj xyuas lub zog hluav taws xob sib txuas thiab kev faib tawm flux kom tswj tau qhov zoo tshaj plaws melting tej yam kev mob. Kev tswj xyuas meej ntawm cov pa hluav taws xob, cov pa oxygen, thiab cov pa roj carbon monoxide yog qhov tseem ceeb rau kev ua tiav qhov kub siab tshaj plaws thiab zam kev ua haujlwm txaus ntshai.
Shutdown thiab Emergency Handling
Nyob rau theem kawg ntawm kev ua haujlwm, cov hlau tsis huv yog zam kom muaj lub txaj huv refractory pob. Cov txheej txheem kaw kom raug suav nrog txo cov hluav taws xob hluav taws xob thiab kev nyab xeeb nres cov khoom siv roj, nrog rau cov txheej txheem xwm txheej ceev rau qhov xwm txheej tsis tau xav txog.
Peb txais tos koj cov lus txib!
Yog tias koj tab tom nrhiav kev txhim khu kev qha thiab ua tau zoo natural gas vertical hlau melting rauv, peb caw koj mus cuag thiab tso koj daim ntawv xaj nrog peb. Muaj kev paub zoo tshaj plaws thiab kev ua tau zoo raws li koj cov kev xav tau tshwj xeeb, thiab cia peb pab koj ua tiav koj cov hom phiaj tsim khoom niaj hnub no!
