1. Cov txheej txheem hnyav yog ib txoj kev smelting high-carbon ferromanganese. Ntxiv nrog rau manganese ore thiab coke, tus nqi muaj pes tsawg leeg kuj suav nrog txiv qaub. Thaum smelting, high-alkalinity slag yog siv los khiav alkalinity. Kev txo qis txaus yog siv los txo cov ntsiab lus ntawm cov khib nyiab slag. Manganese cov ntsiab lus, txhim kho manganese rov qab tus nqi.
2. Flux-dawb txoj kev. Rau manganese-nplua nuj ores uas muaj siab manganese oxide, txoj kev flux-dawb yuav siv tau los smelt ferromanganese. Txiv qaub tsis ntxiv rau tus nqi thaum smelting. Cov khoom siv thiab kev ua haujlwm zoo ib yam li ferrosilicon, thiab nws yog siv nyob rau hauv cov xwm txheej ntawm tus neeg saib xyuas tsis txaus. Thaum ua haujlwm hauv acidic slag, qhov kub ntawm lub cub tawg yog li ntawm 1320-1400 degree qis dua li ntawm txoj kev flux. Siv txoj kev no los tsim tsis tau tsuas yog tsim nyog high-carbon ferromanganese, tab sis kuj tsawg-phosphorus thiab tsawg-phosphorus ferromanganese uas muaj ntau tshaj 35% manganese rau smelting manganese alloys. Iron-nplua nuj manganese slag. 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.
3. Cov txheej txheem hnyav-tsawg siv cov txheej txheem hu ua "weakly acidic slag method" ntawm cov txheej txheem hnyav thiab cov txheej txheem hnyav-dawb. Txoj kev no yog ntxiv cov kua qaub lossis limestone tsim nyog rau lub cub tawg kom tswj qhov sib piv ntawm slag hauv paus m (CaO) / m (SiO2) lossis m (CaO + MgO) / m (SiO20) nruab nrab ntawm 0.6-0.8. Nws tuaj yeem tsis tsuas yog txhim kho tus nqi rov qab ntawm manganese, tab sis kuj tau txais slag uas muaj 25% mus rau 30% manganese thiab qhov tsim nyog ntawm CaO. Cov slag no tuaj yeem muab ntxiv rau hauv qhov cub kom them nyiaj rau smelting silicon-manganese alloy, uas tuaj yeem txuag cov txiv qaub thiab txo qhov kev pheej hmoo ntawm cov txiv qaub deliquescence. Ua kom cov hmoov av ntau ntxiv hauv cov nqi, yog li txhim kho huab cua permeability ntawm tus nqi.
