Txoj kev tsim khoom ntawm qis -carbon ferromanganese

Hauv kev lag luam hlau metallurgy, qis -carbonferromanganeseyog ib qho tseem ceeb ntawm cov khoom siv alloy. Nrog nws cov khoom tshwj xeeb, nws ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw xws li stainless hlau thiab cov qauv hlau. Kab lus no yuav qhia meej txog qhov qis-carbon ferromanganese los ntawm cov khoom xws li tshuaj lom neeg muaj pes tsawg leeg, qhov sib txawv ntawm lwm cov ferromanganese, cov ntawv thov kev lag luam, cov khoom siv raw, thiab cov txheej txheem ntau lawm.

Tsawg-carbon ferromanganese (LC FeMn) yog ferroalloy feem ntau muaj manganese (Mn) thiab hlau (Fe), nrog cov ntsiab lus carbon tsawg heev- feem ntau tsawg dua 0.1%. Nws yog ib qho tseem ceeb ntxiv nyob rau hauv steelmaking, tshwj xeeb tshaj yog nyob rau hauv zus tau tej cov high-qib thiab qis- carbon steels uas tswj cov ntsiab lus carbon yog ib qho tseem ceeb.

Manganese- nplua nuj slag lossis manganese ore

Manganese- nplua nuj slag lossis manganese ore yog cov khoom siv tseem ceeb rau kev tsim cov khoom qis -carbon ferromanganese. Thaum xaiv cov khoom siv raw, qhov tseem ceeb yuav tsum tau muab rau cov neeg uas muaj cov ntsiab lus ntawm cov manganese siab (feem ntau siab dua 40%) thiab qib impurity tsawg los xyuas kom meej qhov zoo ntawm cov khoom kawg.

Cov neeg ua haujlwm txo qis: aluminium hmoov lossis silicon hlau hmoov

Aluminium hmoov: feem ntau siv los ua tus neeg sawv cev txo qis hauv cov hlau thermal txo txoj kev, nws muaj zog txo cov khoom thiab tuaj yeem txo cov manganese oxides zoo.

Silicon hlau hmoov: nrog cov ntsiab lus ntawm silicon ntawm 75% -90%, nws ua haujlwm ua tus neeg sawv cev hauv cov txheej txheem xws li silicon thermal method. Nws tsis tsuas yog txo cov manganese oxides xwb tab sis kuj ua lub luag haujlwm tseem ceeb hauv kev tswj cov ntsiab lus carbon.

Cov hlau nplaum (siv los kho cov ntsiab lus hlau)

Qhov sib ntxiv ntawm cov khoom siv hlau tuaj yeem kho cov ntsiab lus ntawm cov hlau tsis tshua muaj -carbon manganese hlau raws li qhov yuav tsum tau ua, kom ntseeg tau tias cov hlau sib xyaw ua tau raws li cov qauv tsim kom haum rau ntau yam kev thov.

Fluxes thiab additives (txiv qaub, fluorite, thiab lwm yam)

Txiv qaub: feem ntau yog tsim los ntawm calcium oxide, nws reacts nrog impurities xws li silicon dioxide (SiO₂) nyob rau hauv cov ntaub ntawv raw kom tsim tau yooj yim cais slag, yog li purifying cov hlau.

Fluorite: ntxiv rau hauv qee cov txheej txheem kom txo cov ntsiab lus melting thiab viscosity ntawm cov slag, txhim kho nws cov flowability thiab yooj yim rau kev sib cais ntawm cov hlau.

Hlau thermal (aluminium thermal) txo txoj kev

Txheej txheem txheej txheem

Cov hlau thermal txo txoj kev siv cov khoom txo qis ntawm cov hlau xws li txhuas kom txo cov manganese oxides rau hauv cov hlau manganese, yog li ua kom tsawg -carbon manganese hlau. Txoj kev no muaj cov txheej txheem yooj yim thiab yooj yim rau kev khiav lag luam.

Cov tshuaj tiv thaiv tseem ceeb

Noj cov hmoov txhuas txo cov manganese oxide ua piv txwv, cov tshuaj tiv thaiv tseem ceeb yog: 3MnO + 2Al → 3Mn + Al₂O₃. Nyob rau hauv siab -kub kub, txhuas hmoov reacts nrog manganese oxide nyob rau hauv ib tug exothermic cov tshuaj tiv thaiv, ua metallic manganese thiab txhuas oxide slag.

Txheej txheem Flow

Kev npaj cov ntaub ntawv: Sib tov manganese ore, txhuas hmoov, flux, thiab lwm yam raw cov ntaub ntawv nyob rau hauv ib tug tshwj xeeb ratio los tsim ib tug sib tov.

Kev Them Nyiaj: Thauj cov khoom sib xyaw ua ke rau hauv cov khoom siv refractory crucible.

Ignition Reaction: Pib qhov kev tshwm sim uas siv lub tshuab hluav taws xob. Cov tshuaj tiv thaiv tshwm sim nyob rau hauv lub crucible, tso ib tug loj npaum li cas ntawm tshav kub kom yaj cov ntaub ntawv raw.

Kev tshem tawm slag thiab hlau tapping: Tom qab cov tshuaj tiv thaiv xaus, ib zaug qhov kub thiab txias me ntsis, ua ntej tshem tawm cov txheej txheej sab saud ntawm aluminium oxide slag, tom qab ntawd tso tawm cov txheej txheem qis ntawm qis -carbon manganese hlau yaj.

Casting: Ncuav cov molten low-carbon manganese hlau rau hauv pwm, thiab nws yuav txias kom tsim cov ingots.

Cov cuab yeej siv

Feem ntau siv induction furnaces thiab refractory crucibles. Induction furnaces muab thawj zaug cua sov los txhawb cov tshuaj tiv thaiv; refractory crucibles yog siv los tuav cov tshuaj tiv thaiv cov ntaub ntawv raw thiab cov khoom thiab tiv taus qhov siab - qhov kub thiab txias ib puag ncig.

Siab -Carbon Manganese Iron Decarburization Method

Txheej txheem tswvyim

Qhov siab - carbonmanganese hlautxoj kev decarburization siv cov pa oxygen los yog lwm yam txhais tau tias tshem tawm cov pa roj carbon ntau ntawm -carbon manganese hlau, hloov mus rau hauv qis -carbon manganese hlau. Txoj kev no siv siab -carbon manganese hlau ua raw khoom, ua tiav cov txheej txheem thib ob thiab siv cov khoom siv raw.

Hom txheej txheem

Oxygen Blowing: Oxygen yog tshuab mus rau hauv lub siab molten -carbon manganese hlau los ntawm lub nozzle. Cov pa oxygen reacts nrog carbon los tsim cov pa roj carbon monoxide, uas khiav tawm, yog li txo cov ntsiab lus carbon.

AOD (Argon-Oxygen Decarburization): Los ntawm kev sib hloov tshuab argon thiab oxygen, cov tshuaj tiv thaiv huab cua raug tswj kom ua tiav decarburization thaum txo qis manganese oxidation poob thiab txhim kho manganese cov nqi rov qab.

Kub thiab roj tswj

Kev Tswjhwm Kub: Cov txheej txheem decarburization yuav tsum muaj qhov kub thiab txias, feem ntau ntawm 1600℃thiab 1800 degree, kom ntseeg tau tias cov tshuaj tiv thaiv du thiab yaj fluidity.

Gas Control: Precisely tswj tus nqi ntws thiab lub sij hawm txhaj tshuaj ntawm oxygen, nrog rau cov argon - rau -oxygen ratio (AOD method), los tiv thaiv oxidation ntau dhau ntawm manganese thaum ua kom cov ntsiab lus carbon txo mus rau lub hom phiaj tus nqi.

Manganese Oxidation Risks thiab Countermeasures

Kev pheej hmoo: Thaum lub sij hawm decarburization, oxygen tsis tsuas yog cuam tshuam nrog cov pa roj carbon monoxide, tab sis kuj tseem tuaj yeem cuam tshuam nrog manganese los ua manganese oxide, ua rau manganese poob thiab txo cov khoom tawm los.

Kev ntsuas kev ntsuas: Los ntawm kev tswj cov pa oxygen ceev thiab txoj kev, thiab kho qhov ntsuas kub thiab roj sib piv, lub sijhawm rau manganese tuaj rau hauv kev sib cuag nrog oxygen yog txo; Hauv cov theem tom qab ntawm decarburization, cov nqi tsim nyog ntawm silicon hlau hmoov lossis lwm cov tshuaj txo qis tuaj yeem raug ntxiv kom txo tau cov manganese oxide uas twb tau tsim lawm.

Kev lag luam metallurgical

Tsawg-carbon manganese hlau feem ntau yog siv hauv kev lag luam metallurgical ua ib qho tseem ceeb alloy additive. Ntxiv qhov tsim nyog ntawm qis-carbon manganese hlau tuaj yeem txhim kho kev ua haujlwm ntawm cov hlau, txhim kho nws cov oxidation tsis kam, corrosion kuj, thiab hnav tsis kam. Nws tswj cov microstructure ntawm hlau zoo, ua kom nws lub zog thiab hardness, thiab txuas ntxiv nws lub neej kev pab cuam.

Kev lag luam tshuaj

Tsawg- carbonmanganese hlaukuj muaj kev siv dav hauv kev lag luam chemical. Nws tuaj yeem siv los ua ib qho catalyst hauv cov organic synthesis cov tshuaj tiv thaiv los txhawb cov tshuaj lom neeg. Tsawg-carbon manganese hlau nthuav tawm cov kev ua haujlwm catalytic zoo hauv qee cov organic synthesis cov tshuaj tiv thaiv, xws li oxidation thiab hydrogenation, yog li txhim kho cov tshuaj tiv thaiv thiab cov khoom purity.

Kev tiv thaiv ib puag ncig

Tsawg-carbon manganese hlau kuj tuaj yeem siv rau hauv kev kho ib puag ncig thiab kho dej khib nyiab. Piv txwv li, hauv cov txheej txheem kho dej, qis- carbon manganese hlau tuaj yeem siv los ua cov khoom siv los tshem tawm cov hlau hnyav ions thiab cov khoom tsis zoo los ntawm dej, yog li ua kom cov dej huv huv. Daim ntawv thov no zoo txo ​​cov dej paug pov tseg thiab tiv thaiv ib puag ncig ecological.

Hauv kev tsim khoom tiag tiag, yam xws li kev tsim khoom lag luam, cov khoom lag luam zoo, thiab cov nqi siv nyiaj yuav tsum raug txiav txim siab los xaiv txoj kev tsim khoom tsim nyog tshaj plaws, ua tiav qhov sib npaug ntawm cov txiaj ntsig kev lag luam thiab cov khoom lag luam zoo.