对用ＳＯ２气体浸出贫软锰矿的可行性进行了热力学分析，对影响浸出过程的因素，如温度、粒度、气体流量、液固质量比进行了试验研究，得出浸出过程的动力学方程为：１－（１－ｒ）１／３＝２８０×１０－２ｑ１０４×ｅ－１７９３０／ＲＴ×ｔ The feasibility of leaching pyrolusite from SO2 gas was investigated by means of thermodynamics. Factors affecting the leaching process such as temperature, particle size, gas flow rate and liquid-solid mass ratio were studied. The kinetic equation of leaching process was obtained as follows: 1- (1-r) 1/3 = 2  80 × 10-2q1  04 × e-17930 / RT × t