Abstract: A method for producing low-carbon ferromanganese capable of achieving a high Mn yield. In producing low-carbon ferromanganese by blowing an oxidizing gas from a top-blowing lance onto a bath face of high-carbon ferromanganese molten metal accommodated in a reaction vessel provided with a top-blowing lance and bottom-blowing tuyere to perform decarburization, the slag composition during the blowing is adjusted so that a value of (CaO+MgO)/(Al2O3+SiO2) on a mass basis in the slag composition is not less than 0.4 but not more than 5.0. Also, agitation is performed under a condition that an agitation power density ? of an agitation gas blown through the bottom-blowing tuyere is not less than 500 W/t.
Type:
Application
Filed:
February 16, 2021
Publication date:
June 1, 2023
Applicants:
JFE STEEL CORPORATION, JFE MINERAL & ALLOY COMPANY, LTD.