2×400kt/a硫铁矿制酸装置国产化可行性分析

Feasibility analysis of localization of 2×400 kt/a sulphuric acid plants based on pyrite

介绍我国大型硫铁矿制酸装置国产化的现状,针对冬瓜山铜矿副产硫精砂中磁硫铁矿含量高、粒度细的特点,对2×400kt/a硫铁矿制酸装置的工艺流程、“三废”处理、系统配置的选择及沸腾炉、废热锅炉、电除尘器、干燥塔、吸收塔、转化器等关键设备的国产化进行分析,指出可能存在的问题;并对我国大型硫铁矿制酸国产化提出建议。

The present situation of localization of large-scale sulphuric acid plants based on pyrite is introduced. According to the features of high concentration magnetic pyrite and fine particle size of Dongguashan byproduct pyrite,process arrangement, ＂three wastes＂ disposal and localization of key equipment such as fluidized bed roaster, waste heat boiler, electrostatic precipitator, drying and absorption towers and converter are analyzed. Possible problems are pointed and some recommendations about localization of large-scale sulphuric acid plants based on pyrite are made.