Kev ua tau zoo ntawm cov txheej txheem tsim cov phaj hnav-tiv taus los ntawm txoj kev electrosilicothermal
Nyob rau hauv xyoo tas los no, Tuam Tshoj tau imported ib tug loj tus naj npawb ntawm tom qab npib tsib xee ore los tsim npib tsib xee-hlau alloy los hloov ib co hlau npib tsib xee thiab daws cov teeb meem ntawm nickel tsis txaus. Cov khoom siv nickel-hlau uas siv rau hauv smelting ntawm hnav-resistant daim hlau yuav tsum tsis tshua muaj silicon thiab phosphorus pawg, ntawm ib sab, kom txo tau lub dephosphorization lub nra nyob rau hauv lub smelting txheej txheem ntawm hnav-resistant daim hlau, ntawm qhov tod tes, vim hais tias lub siab. silicon pawg feem ntau tsis haum rau oxidation thiab dephosphorization ntawm nickel-hlau alloy nws tus kheej thiab stainless hlau niam cawv. Txawm li cas los xij, vim muaj cov yam ntxwv ntawm cov silica loj feem ntawm cov xuab zeb ore, cov txheej txheem ntawm kev tsim cov khoom siv nickel-hlau kom ua tau raws li qhov yuav tsum tau ua ntawm kev hnav-resistant phaj smelting yog qhov nyuaj, thiab cov nyiaj slag yog loj.
Raws li cov yam ntxwv ntawm cov ntsiab lus siab silica hauv cov qib qis tom qab nickel ore, cov txheej txheem yog siv los tsim high-silicon npib tsib xee hlau los ntawm cov pob zeb hauv av, thiab tom qab ntawd cov chromium thiab hlau hauv chromium hmoov ore raug txo los ntawm silicon ntawm high- silicon npib tsib xee hlau, thiab niam kua ntawm nickel-chromium hnav-resistant phaj yog tau, thiab ces xa mus rau AOD los yog VOD refining txheej txheem tom qab muaj pes tsawg leeg thiab kub hloov los tsim hnav-resistant phaj.
Yog li, cov txheej txheem tsis tsuas yog pab daws qhov teeb meem ntawm kev tsim cov silicon ferric npib tsib xee los ntawm cov ore ore, tab sis kuj tuaj yeem siv ncaj qha siv chromium concentrate hmoov. Cov khoom siv thiab lub zog sib npaug ntawm cov txiaj ntsig tau pom tau tias piv nrog cov txheej txheem "ob-kauj ruam", cov txheej txheem tshiab tuaj yeem txo cov nqi ntawm cov khoom siv raw li 6.3% ~ 7.2%, txo cov kev siv hluav taws xob zoo li ntawm 7.1%, thiab txo CO2. emission los ntawm kwv yees li 6.1%. Cov txiaj ntsig ntawm lub rooj ntev zaum tau pom tias cov phosphorus loj feem ntawm cov silicon npib tsib xee hlau nrog silicon pawg feem ntawm kwv yees li 20% tuaj yeem raug txo kom tsawg dua 0.03%, uas tuaj yeem ua tau raws li cov qauv tsim ntawm cov txheej txheem tshiab. Tom qab dephosphorization, lub siab silicon ferric npib tsib xee yog desilicated thiab chromed, thiab thaum kawg cov nickel-chromium stainless hlau puag cov ntaub ntawv nrog cov loj feem ntawm phosphorus, silicon thiab carbon raws li qhov yuav tsum tau ntawm thawj steelmaking dej ntawm hnav-resistant phaj yuav tau txais.
