ferrosilicon smelting ua haujlwm fais fab mov thiab cov khoom siv raw

Lub zog hluav taws xob sab saud ntawm lub qhov cub ferrosilicon feem ntau yog tsim nyob rau hauv txoj kev txuas mus ntxiv hauv hluav taws xob arc rauv. Tam sim no muab los ntawm lub transformer nkag mus rau hauv lub cub tawg uas muaj nqi los ntawm cov electrode. Thaum lub sij hawm tag nrho cov txheej txheem melting, cov electrode yog ib txwm muab tso rau hauv qhov sib sib zog nqus, tsis muaj qhov arc. Cov txheej txheem melting yog nyob ntawm qhov kub ntawm qhov arc thiab qhov kub ntawm qhov tsis kam uas tshwm sim thaum tam sim no dhau los ntawm electrode thiab them.

Kev ua haujlwm yuav tsum tau ua raws li nruj me ntsis raws li cov khoom siv hluav taws xob ntawm lub tshuab hluav taws xob. Lub electrode yuav tsum tau tsa kom zoo ua ntej siv hluav taws xob. Peb-theem ammeter yuav tsum sib npaug, thiab qhov kev hloov pauv tam sim no yuav tsum tsis pub tshaj 25%. Qhov voltage thiab tam sim no siv nyob rau hauv ib txwm yaj nyob rau hauv hluav taws xob furnaces ntawm ntau yam muaj peev xwm yog hais txog 84 V rau 1800 kVA hluav taws xob rauv thiab txog 96 V rau 3200 kVA hluav taws xob furnaces.

Kev siv hluav taws xob ib teev twg thaum lub sij hawm smelting ib txwm yuav tsum yog tsawg kawg yog 5% ntawm qhov load.

Kev faib tawm ntawm cov khoom siv raw

Nyob rau hauv tus txheej txheem ntawm ferrosilicon smelting, ib tug loj npaum li cas ntawm kub rauv gas yog generated nyob rau hauv lub cub tawg. Txhawm rau kom siv tag nrho lub zog ntawm cov roj cua kub, tswj cov huab cua zoo permeability ntawm raw cov ntaub ntawv, ceev cov tshuaj tiv thaiv nyob rau hauv lub cub tawg, ua kom lub cub tawg kub, thiab nthuav lub "crucible", qhov saum npoo ntawm cov khoom yuav tsum tau muab faib mus rau hauv ib tug rhuab qhov cub. dav thiab tiaj lub khob hliav qab.

Kev tswj xyuas qhov siab ntawm qhov siab ntawm cov khoom siv raw, tshwj xeeb tshaj yog tswj qhov siab ntawm qhov loj ntawm cov khoom siv raw thiab tuav lub khob hliav qab dav thiab tiaj tus, yog ib qho teeb meem uas yuav tsum tau them sai sai rau lub sijhawm ua haujlwm. Yog hais tias qhov saum npoo ntawm cov khoom siv raw yog siab dhau lawm, tsis yog tsuas yog cov silica hauv cov khoom siv hluav taws xob yuav yooj yim dov mus rau hauv qab ntawm lub khob hliav qab, tab sis kuj cov khoom siv raw khoom yuav muaj cua permeability tsis zoo, qhov tob ntawm electrode insertion yuav txo. , qhov chaw kub kub yuav txav mus rau sab saud, qhov kub poob yuav nce siab heev, lub qhov cub hauv qab kub yuav txo qis, "crucible" yuav txo qis, tshem tawm slag yuav nyuaj, thiab qhov xwm txheej ntawm lub qhov cub yuav txo qis. cub tawg yuav deteriorate. Thaum qhov chaw ntawm cov khoom qis dhau lawm, thiab qhov chaw ntawm cov khoom siv raw hauv lub cub tawg yog tiaj tus thiab concave, ntawm ib sab, cov cua kub siab hauv cov tub ntxhais hauv qhov cub tsis tuaj yeem siv tag nrho, thiab cov cua kub ntau heev. yuav ploj mus thiab nkim; Ntawm qhov tod tes, lub qhov cub tawg tau txo qis heev vim qhov kub thiab txias, qhov tsis kam ntawm cov khoom siv raw yog txo qis, cov electrode insertion qhov tob yog txo, qhov "crucible" txo qis, qhov kub ntawm lub qhov cub yog deteriorating, thiab cov kev ua haujlwm tsis zoo. Raws li tuaj yeem pom los ntawm cov saum toj no, siab dhau lossis qis dhau ntawm qhov chaw ntawm cov khoom siv raw yog tsis haum rau smelting. Yog li ntawd, nws yog ib qho tsim nyog los tswj qhov tsim nyog qhov siab ntawm cov khoom siv raw. Feem ntau, qhov siab ntawm cov khoom yuav tsum nyob ze rau ntawm ntug ntawm lub qhov cub qhov cub, thiab qhov siab ntawm lub khob hliav qab yog 200-300mm.



Thaum lub permeability ntawm lub cub tawg yog zoo, nws tsis tsuas yog siv tag nrho cov thermal zog ntawm high-temperature furnace gas kom preheat tus nqi thiab txo cov silicon poob vim volatilization, tab sis kuj pab txo qhov kub ntawm gradient nyob rau hauv lub cub tawg, txhim kho. tam sim no faib, xyuas kom tob thiab ruaj khov electrode insertion, yog li expanding lub "crucible". Txawm li cas los xij, qhov tseeb, nyob rau hauv Cov txheej txheem ferrosilicon smelting yog qhov nyuaj los tswj kom zoo permeability nyob rau hauv lub cub tawg txij thaum pib mus txog rau thaum xaus. Piv txwv li, tus nqi uas nyob deb ntawm cov electrode yog yooj yim permeable.

Txhawm rau tshem tawm qhov tshwm sim ntawm qhov tsis txaus ntawm tus neeg sawv cev txo qis, nws yog ib qho tsim nyog yuav tsum ua kom ruaj khov ntawm cov electrode, nthuav lub khob hliav qab, feem ntau xuas nrig ntaus lub qhov muag thiab ua tib zoo xuas lub qhov cub. Thaum tua lub qhov cub, ib qho nyiaj ntawm coke yuav tsum tau ntxiv raws li qhov xwm txheej tiag tiag thiab tus nqi ntawm coke nyob rau hauv batch yuav tsum tau nce ntxiv.

Txhawm rau tshem tawm qhov tshwm sim ntawm kev txo tus neeg sawv cev ntau dhau, tus nqi ntawm cov coke hauv cov khoom siv yuav tsum raug txo kom tsawg thiab kev tswj hwm ntawm lub qhov cub qhov cub yuav tsum muaj zog. Yog tias tus neeg sawv cev txo qis dhau lawm, qhov tsim nyog ntawm silica tuaj yeem ntxiv nyob ib ncig ntawm lub electrode. Thaum silicon carbide tsim nyob rau hauv lub cub tawg, qee cov ntaub ntawv hlau tuaj yeem muab ntxiv kom tawg.

Ib qho dhau los lossis tsis muaj tus neeg sawv cev txo qis yuav txo qhov "crucible" ntawm lub cub hluav taws xob, ua rau lub qhov cub ua kom tsis zoo, ua kom cov hluav taws xob siv hluav taws xob ntau ntxiv thiab txo tus nqi ntawm silicon rov qab. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum muaj cov ntsiab lus carbon tsim nyog.