Smeltingsiab carbon ferromanganeselos ntawm hluav taws xob rauv txoj kev
Fluxless txoj kev. Rau manganese-nplua nuj ores nrog siab manganese oxide cov ntsiab lus, ferromanganese tuaj yeem smelted siv txoj kev tsis muaj flux. Txiv qaub tsis ntxiv rau tus nqi thaum smelting. Cov cuab yeej siv thiab kev ua haujlwm zoo ib yam li ferrosilicon, thiab acidic slag yog siv nyob rau hauv cov xwm txheej ntawm tus neeg saib xyuas tsis txaus. Lub cub tawg kub Nws yog li 1320 ~ 1400 degree qis dua li txoj kev flux.
Siv txoj kev no los tsim tsis tau tsuas yog tsim nyog high-carbon ferromanganese, tab sis kuj low-phosphorus, low-iron thiab manganese-nplua nuj slag uas muaj ntau tshaj 35% manganese rau smelting manganese alloys. Lub sijhawm no, kev faib tawm ntawm manganese yog raws li nram no: tus nqi alloying yog 58% mus rau 60%, slag tus nqi yog 30% mus rau 32%, thiab tus nqi volatilization yog 10%. Obviously, txoj kev flux-dawb rau smelting high-carbon ferromanganese yuav tsum siv manganese-nplua nuj ore nrog siab manganese cov ntsiab lus, thiab yuav tsum muaj cov ntsiab lus phosphorus tsawg hauv cov ore. Txawm hais tias manganese rov qab tus nqi ntawm txoj kev no tsawg, feem ntau ntawm manganese tuaj yeem rov qab tau thaum smelting manganese alloys nrog manganese-nplua nuj slag, thiab tag nrho manganese rov qab tus nqi siab dua li ntawm flux.
Cov txheej txheem ntawm smelting siab carbon ferromanganese los ntawm txoj kev hnyav-dawb yog nruam. Tus nqi yog txuas ntxiv mus rau hauv lub qhov cub nrog rau cov txheej txheem melting. Cov batch tuaj yeem tsim los ntawm 300kg manganese ore, 60 ~ 70kg coke, thiab 15 ~ 20kg steel scraps. Thaum lub sij hawm hnyav-dawb smelting, chav tsev fais fab noj ntawm cov khoom yog tsawg heev, thiab nws yog ib qho yooj yim los tsim low-silicon high-carbon ferromanganese vim hais tias feem ntau ntawm silicon yog enriched nyob rau hauv lub slag.
