采用美国 Micromeritics公司的 ASAP2 0 0 0型比表面孔容测定仪 ,用等温吸附法 ,对硫铁矿 (Fe S2 )在反应前及一维沉降管炉不同炉温条件下的孔径、比表面积和孔容积等参数的变化特性及硫的释出规律进行了测定 ,得到了对 Fe S2 及其反应产物形态的一定认识。研究表明 ,Fe S2 颗粒的分解、氧化是由外表面向中心进行的 ,并可能出现氧化和分解同时进行的过程。 The pore size, specific surface area and specific surface area of ​​pyrite (Fe S2) before and one-dimensional sedimentation tube furnace under different temperature conditions were measured by the isothermal adsorption method using the Micromeritics ASAP2 060 specific surface pore volume analyzer Pore ​​volume and other parameters of the characteristics of changes and the release of sulfur were measured to obtain a certain understanding of the shape of Fe S2 and its reaction products. Studies have shown that the decomposition of Fe S2 particles, the oxidation from the outer surface to the center, and the oxidation and decomposition may occur at the same time.