Cov cuab yeej siv hauv cov tshuab pa oxygen uas tsis tshua muaj carbon ferrochromium hauv oxygen tshuab yog lub converter, yog li nws tseem hu ua txoj kev hloov pauv. Raws li cov txheej txheem sib txawv ntawm cov pa oxygen, cov tshuab pa oxygen tuaj yeem muab faib ua plaub hom: sab tshuab, tshuab sab saum toj, hauv qab tshuab thiab sab saum toj thiab hauv qab tshuab. Txoj kev tshuab pa oxygen yog tshuab oxygen ncaj qha mus rau hauv cov kua roj carbon monoxide ferrochromium kom decarburize nws los tsim cov pa roj carbon ferrochrome nruab nrab.
Cov txheej txheem tshwj xeeb yog: thaum cov pa oxygen tau tshuab rau hauv cov kua roj carbon monoxide ferrochromium, vim tias cov ntsiab lus ntawm chromium thiab hlau nyiaj ntau dua 0.9 ntawm tag nrho cov alloy, chromium thiab hlau yog oxidized ua ntej, thiab tom qab ntawd cov oxides no. oxidize silicon hauv cov hlau. Poob. Vim yog oxidation ntawm chromium, hlau, thiab silicon, qhov kub ntawm lub pas dej molten nce sai, thiab decarburization cov tshuaj tiv thaiv sai heev. Qhov siab dua qhov kub, qhov ua kom zoo dua rau cov tshuaj tiv thaiv decarburization, thiab tuaj yeem cuam tshuam cov tshuaj tiv thaiv oxidation ntawm chromium, thiab cov pa roj carbon tsawg hauv cov hlau tuaj yeem txo qis. .
Cov ntaub ntawv raw rau oxygen sab saum toj tshuab refining ntawm low-carbon ferrochromium yog high-carbon ferrochromium, chromium ore, txiv qaub thiab silicon-chromium alloy. Cov kua roj carbon ferrochromium siab nyob rau hauv lub converter yuav tsum muaj qhov kub thiab txias, feem ntau ntawm 1723 thiab 1873K. Txiv qaub kuj yog siv los ua cov khoom siv slag, thiab nws cov kev xav tau yog tib yam li cov txheej txheem electrosilicothermal. Silicon-chromium alloy yog siv los txo cov high-chromium slag nyob rau tom qab theem ntawm tshuab. Feem ntau, silicon-chromium alloy hmoov sieved tom qab crushing yuav siv tau.
