CAJ | 학술논문

利用X射线荧光光谱、X射线衍射、扫描电镜和能谱分析仪对转炉钢渣的物相组成及其形貌特征进行研究，并用热力学软件FactSage对钢渣冷却过程中各物相的析出情况进行模拟。结果表明，转炉钢渣中的主要物相为硅酸钙相、铁酸钙相以及 RO相，此外还有少量的游离氧化钙（ f‐CaO ）等物相。从物相的形貌特征上来看，硅酸钙相多呈圆形或椭圆形，尺寸为10～20μm ；铁酸钙相以延伸的状态分布在硅酸钙相和RO相之间，无规则形状；RO相为连续延伸的无定形状，尺寸大小不一；游离氧化钙呈堆积状态，无规则形状，尺寸在30～50μm 之间，且表面较为粗糙。转炉钢渣在缓慢冷却的过程中，最终会析出γ‐Ca2 SiO4、Ca2 Fe2 O5、（MnO）（Fe2 O3）以及少量的MgO等物相，且各物相的析出温度分别为175、1325、425、1550℃。
이용X사선형광광보、X사선연사、소묘전경화능보분석의대전로강사적물상조성급기형모특정진행연구，병용열역학연건FactSage대강사냉각과정중각물상적석출정황진행모의。결과표명，전로강사중적주요물상위규산개상、철산개상이급 RO상，차외환유소량적유리양화개（ f‐CaO ）등물상。종물상적형모특정상래간，규산개상다정원형혹타원형，척촌위10～20μm ；철산개상이연신적상태분포재규산개상화RO상지간，무규칙형상；RO상위련속연신적무정형상，척촌대소불일；유리양화개정퇴적상태，무규칙형상，척촌재30～50μm 지간，차표면교위조조。전로강사재완만냉각적과정중，최종회석출γ‐Ca2 SiO4、Ca2 Fe2 O5、（MnO）（Fe2 O3）이급소량적MgO등물상，차각물상적석출온도분별위175、1325、425、1550℃。
By means of XRF ,XRD ,SEM and EDS ,the phase composition and morphology characteris‐tics of the converter slag w ere studied .T he precipitation process of each precipitated phase during the cooling of slag was simulated by the thermodynamic software FactSage .Results show that the main phases of the converter slag are Ca2 SiO4 ,Ca2 Fe2 O5 and RO phase ,and there is a small amount of free CaO .Ca2 SiO4 phase mainly appears in round or oval shape ,and its size is mainly in the range of 10~20 μm ;Ca2 Fe2 O5 phase with irregular shape outspreadly distributes between the Ca2 SiO4 and RO phases .RO phase with different sizes has continuous spread amorphous state .Free CaO with irregu‐lar shape appears in stacked form ,and its size is in the range of 30~50μm with rugged surface .Dur‐ing the slow cooling process of the converter slag , the final precipitated phases are γ‐Ca2 SiO4 , Ca2 Fe2 O5 ,(MnO)(Fe2 O3 ) and a small amount of MgO ,and the precipitating temperatures of each phase are 175 ,1325 ,425 ,1550 ℃ ,respectively .