발간논문

Home > KJMM 논문 > 발간논문

Vol.7, No.4, 235 ~ 241, 1969
Title
Reduction and Oxidation Reaction of Chromium by CO·CO2 gas during Melting and Refining of the alloy Steel under Acid slag
고창식Chang Shik Ko, 조정완Chung Wan Cho, 최수웅Soo Oung Choi
Abstract
Standard free energy changes for reduction of chromium oxides and formation of carbides by CO gas were calculated. The results are interpreted that reduction of chromium oxides and formation of chromium carbides from the oxides or the metal by CO gas are possible only when partial pressure of CO gas is considerably high. In this study, various ratios of CO and CO₂had been blowing through Fe-Cr alloy contained different [Cr %] and the slag at 1600℃ and the results are summarized as follows; 1. Reduction of (Cr₂O₃) to (CrO) in acid slag by CO gas was established up to about 50% CO. 2. [Cr %] in molten steel is nearly reciprocal to CO₂%, but Oxidation of chromium by CO₂is lower than the equilibrium data thermodynamically calculated, 3. Although charged chromium amount increase, chromium content in steel is constant under constant CO/CO₂ratio. 4. Carbon content in steel increases as chromium content increase.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.