http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
논문 : 건식제련 ; 용융 Fe-C 합금중 As의 활동도에 관한 연구
배병철 ( B. C. Bae ),민동준 ( D. J. Min ) 대한금속재료학회 ( 구 대한금속학회 ) 1998 대한금속·재료학회지 Vol.36 No.6
From the viewpoint of the removal of tramp element, the thermodynamic properties of arsenic in molten Fe-C alloy was investigated between 1523K to 1823K by using chemical equilibrating technique. The effects of the arsenic, carbon concentration and the temperature on the activity coefficient of arsenic were also measured. The activity coefficient of arsenic in carbon saturated iron was measured as 0.09 at 1673K. The following activity coefficient of arsenic in molten iron was derived in terms of interaction parameters and temperature. □ By combining the present experimental results and the reference for thermodynamic properties of arsenic, the possibility of the removal of arsenic from molten iron by evaporation was discussed.
고온에서의 Fe-C 합금중 Sb 의 열역학적 거동에 관한 연구
민동준,배병철 대한금속재료학회(대한금속학회) 1998 대한금속·재료학회지 Vol.36 No.1
The thermodynamic behaviors of antimony in molten iron-carbon alloys at high temperature was investigated in connection with the possibility of removal of tramp elements by chemical equlibrating technique. The effects of antimony, carbon content and temperature on the activity coefficient of antimony in molten iron was determined by measuring distribution ratio of antimony between Fe-C alloy and silver. Though the effect of Sb content on activity coefficient, ε^(Sb)_(Sb) , was null at the lower than 0.1wt% Sb, the effect of carbon on Sb activity coefficient, ε^(Sb)_(Sb) was estimated as 10.32 at 1673K. The dependence of the acvtivity coefficient of antimony on temperature was determined as follows ; For carbon saturated iron : ln γ ^(Fe-C○)_(Sb)=-14280/T+10.20 For molten iron : ln γ^O_(Sb)=-23000/T+13.19 Combining the effects of temperature and carbon, the activity coefficient in Fe-C alloy could be expressed as follows; ln γ ^(Fe-C_(Sat.)_(Sb)=(-23000/T+13.19)+ε^O_(Sb)·X_o where, ε^O_(Sb)= 64260/T-28.09 and [%C]^(sat)_(Fe)=0.647+2.54X 10^(-3)·T(K) The possibility of the removal of antimony from molten iron by evaporation was discussed.